service notes(a4)_e

Sep. 2001 GT-6(T)

SERVICE NOTESFirst Edition

Issued by RJAGuitar Effects ProcessorTABLE OF CONTENTSTABLE OF CONTENTS ...................................................1SPECIFICATIONS.............................................................2LOCATION OF CONTROLS PARTS LIST ...................4LOCATION OF CONTROLS ..........................................4EXPLODED VIEW PARTS LIST .....................................6EXPLODED VIEW ............................................................6WIRING DIAGRAM.........................................................8PARTS LIST........................................................................9IDENTIFYING THE VERSION NUMBER ..................14TRANSMITTING / RECEIVING DATAVIA MIDI..........................................................................14BULK DUMP ...................................................................14BULK LOAD....................................................................14

TEST MODE.....................................................................14RESTORING THE FACTORY SETTINGS(FACTORY RESET).........................................................19HOW TO UPDATE SYSTEM SOFTWARE .................19BLOCK DIAGRAM.........................................................21CIRCUIT BOARD (MAIN) ............................................22CIRCUIT BOARD (MAIN) ............................................24CIRCUIT DIAGRAM (MAIN 1/2) ...............................26CIRCUIT DIAGRAM (MAIN 2/2) ...............................28CIRCUIT BOARD (SW SHEET) ....................................30CIRCUIT DIAGRAM (SW SHEET) ..............................32ERROR MESSAGE ..........................................................34

Copyright © 2002 ROLAND CORPORATIONAll rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.

Printed in Japan (0800) (CM)17058013E0

Sep. 2001

SPECIFICATIONS

GT-6: Guitar Effects Processor• AD Conversion

24 bit + AF method

• DA Conversion

24 bit

• Sampling Frequency

44.1 kHz

• Program Memories

340: 140 (User) + 200 (Preset)

• Nominal Input Level

INPUT: -10 dBu

RETURN: -10 dBu

• Input Impedance

INPUT: 1 M ohms

RETURN: 220 k ohms

• Nominal Output Level

OUTPUT: 0 dBu

SEND: -10 dBu

• Output Impedance

OUTPUT: 2 k ohms

SEND: 2 k ohms

• Digital Output

EIAJ CP1201, S/P DIF

• Dynamic Range

100 dB or greater (IHF-A)

• Controls

< Front Panel >

(PREAMP/SPEAKER)

TYPE knob

GAIN knob

BASS knob

MIDDLE knob

TREBLE knob

LEVEL knob

SPEAKER knob

On/Off button

TYPE VARIATION button

(OVERDRIVE/DISTORTION)

TYPE knob

DRIVE knob

LEVEL knob

On/Off button

TYPE VARIATION button

(DELAY)

FEEDBACK knob

LEVEL knob

On/Off button

TAP button

(CHORUS)

LEVEL knob

On/Off button

(REVERB)

LEVEL knob

On/Off button

(WAH)

On/Off button

(EQ)

On/Off button

(FX-1)

On/Off button

(FX-2)

On/Off button

(MASTER)

PATCH LEVEL knob

PARAMETER buttons L/R

EXIT button

WRITE button

EZ TONE button

PEDAL ASSIGN button

OUTPUT SELECT button

TUNER/BYPASS button

NAME/NS/MASTER button

UTILITY button

MANUAL button

Number pedals1-4

BANK pedals (Up/Down)

CTL pedal

Expression pedal

Expression pedal switch

PATCH/VALUE dial

< Rear Panel >

OUTPUT LEVEL knob

POWER switch

Display

16 characters, 2 lines (backlit LCD)

2 characters, 7 segment LED

Connectors

INPUT jack

OUTPUT jacks L (MONO)/R

PHONES jack

SEND jack

RETURN jack

DIGITAL OUT connector (coaxial)

SUB EXP PEDAL/SUB CTL PEDAL1,2 jack

MIDI connectors IN/OUT

AC Adaptor jack

• Power Supply

AC 14 V; Supply AC adaptor (BOSS BRC series)

• Current Draw

800 mA

• Dimensions

515 (W) x 261 (D) x 75 (H) mm

20-5/16 (W) x 10-5/16 (D) x 3 (H) inches

• Weight

4.7 kg/10 lbs 6 oz (excluding AC Adaptor)

• Accessories

Owner’s Manual English (#G6017298)

AC Adaptor BRC-120V (#01786223)



EURO CONVERTER PLUG ECP01-5A (PLUG for 230V) (#00905234)

• OptionsMIDI Implementation English (#17041119)

Foot Switch: FS-5U, FS-5L

Expression Pedal: EV-5 (Roland), FV-300L + PCS-33 (Roland)

Foot Switch Cable: PCS-31 (Roland)

(1/4 inches Phone Plug (stereo) - 1/4 inches Phone Plug (mono) x 2)

* 0 dBu = 0.775 Vrms

* In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice.

2

GT-6(T)

3

GT-6(T)

8. 27. 28.29.30.31.32.33.34.35.37.

39.40.41.42

38.

53.

5

Sep. 2001

LOCATION OF CONTROLS PARTS LIST

LOCATION OF CONTROLSfig.panel

No. Part Code Part Name Q’ty1 G2477122 R-KNOB 152 F3279803 POTENTIOMETER RD901-40-125F-

B54-11D (11 click)1

3 F3279804 POTENTIOMETER RD901-40-125F-B54-06D (6 click)

2

4 F3279802 POTENTIOMETER RD901-40-125F-B54-00D

12

5 G2237113 GUARD PLATE 16 G2237112 GUARD 17 G2017152 TOP COVER 18 F5029412 LED (RED) A-552SR BW 19 F5029405 LMC-SSC2K16DLNY-H01 110 G2567119 DISPLAY COVER 111 22485303 D R-KNOB L BLK 248-303 112 01905467 ROTARY ENCODER EVE GC1 F20

24B1

13 G2567118 ESCUTCEON (for PANEL) 114 G247751301 KEYTOP S WITHOUT LENS 415 G247751001 KEYTOP S BLACK WITH LENS 1916 F5029111 LED (RED/GREEN) L-3WSRSGW-

CC2

17 F5029117 LED (RED) L-312LRD 1718 1502928100 LED (RED) L-34HDSL 819 01780101 TACT SWITCH SKQKAB 2320 G2217138 PEDAL LABEL(1) 121 G2217139 PEDAL LABEL(2) 122 G2217140 PEDAL LABEL(3) 123 G2217143 PEDAL LABEL(4) 124 G2217144 PEDAL LABEL(CTL) 125 G2217142 PEDAL LABEL(DOWN) 126 G2217141 PEDAL LABEL(UP) 127 G2357112 VR PLATE 128 G2567121 RUBBER SW ESCUTCHEON 129 G2567120 RUBBER SW 130 G2187533 VR PEDAL 131 G2187904 PEDAL HOLDER 132 01016167 11M/M ROTARY POT.

RK11K1140(10K SP B)1

33 G2357111 CUSHION R 134 G2147117 PIN STAY 135 G2147119 BOLT HOLDER 236 G2357120 FOOT H=5 537 G2147116 SHAFT STAY 138 G2227301 PEDAL ESCUTCHEON 739 G2187602 SWITCH PEDAL 740 G2177103 SUPPORT SPRING 741 G2357109 PEDAL FOOT 742 13129778 TACT SWITCH SKQKAH 743 G2017150 BOTTOM COVER 144 13449155MF PHONE JACK (MONO) HTJ-064-12I 545 13449150MF PHONE JACK (STEREO) HTJ-064-

12D2

46 01340412 P R-KNOB SF-A BLK/LCG 147 01676523 9M/M ROTARY POT. RK09K12A0

10KAX21

48 01343723 RCA(PIN) JACK YKC21-3117 149 13429825 MIDI CONNECTOR YKF51-5054 150 12499175 G S-BUTTON S1H BLK 151 01676512 PUSH SWITCH SDKLA1-B 152 13449728 ADAPTOR JACK HEC0740-010010 153 22360712 CORD HOOK 236-712 1

1.2.

1.3. 1.4.

5.

6. 7. 8. 9.

10. 1.3.11.12.13.

14.19.

15.17.19.

1

18.

25. 26.

20. 21. 22. 23. 24.

36.43. 44.

45.46.47.

48. 49.

50.51.

52.

15.16.19.

4

GT-6(T)

32

q

31

p

qo

30

41

41

29

2

m

7

Sep. 2001

EXPLODED VIEW PARTS LIST

EXPLODED VIEW

fig.jack

[Parts]

No. Part Code Part Name1 G2017152 TOP COVER2 G2017150 BOTTOM COVER3 G2237112 GUARD4 G2237113 GUARD PLATE5 G2567120 RUBBER SW6 G2567121 RUBBER SW ESCUTCHEON 7 G2357120 FOOT H=58 G2567119 DISPLAY COVER9 12499175 G S-BUTTON S1H BLK10 22485303 D R-KNOB L BLK11 01340412 P R-KNOB SF-A BLK/LCG12 22360712 CORD HOOK 236-71213 G2217138 PEDAL LABEL(1)14 G2217139 PEDAL LABEL(2)15 G2217140 PEDAL LABEL(3)16 G2217143 PEDAL LABEL(4)17 G2217144 PEDAL LABEL(CTL)18 G2217141 PEDAL LABEL(UP)19 G2217142 PEDAL LABEL(DOWN)20 G247751001 KEYTOP S BLACK WITH LENS21 G247751301 KEYTOP S WITHOUT LENS22 G2147116 SHAFT STAY23 G2477122 R-KNOB24 G2567118 ESCUTCEON (ABS,for PANEL)25 G2227301 PEDAL ESCUTCHEON26 G2187602 SWITCH PEDAL27 G2177103 SUPPORT SPRING28 G2357109 PEDAL FOOT29 G2187904 PEDAL HOLDER30 G2187533 VR PEDAL31 G2357111 CUSHION R32 G2147117 PIN STAY33 G2357112 VR PLATE34 F5029405 LCD35 75D523S000 SW1 BOARD36 75D523S000 SW2 BOARD37 75D523S000 SW3 BOARD38 75D523M000 MAIN BOARD39 75D523S000 SW4 BOARD40 75D523S000 SW5 BOARD41 G2147119 BOLT HOLDER42 12569249S0 LITHIUM BATTERY CR2032

[Screws]

No. Part Code Part Namea H5029854 HEX BUTTON BOLT M3x12 FeNib ******** M9 NUT (with ENCODER)c H5039126 M9 WASHER (with ENCODER)d H5039520 M9 NUT (VR)e H5039510 NUT M9x11x2 FeNi (for Phone Jack)f H5039112 WASHER M9 (for Phone Jack)g 40342701 SCREW 2.3x8 BINDING TAPTITE P ZCh 40011278 SCREW 3x8 BINDING TAPTITE P ZCI 40011312 SCREW 3x8 BINDING TAPTITE P BZCk 40127689 SCREW M3x10 BINDING TAPTITE S BZCm H5019124 SCREW M3x6 BINDING W/PW+SW ZC

(Small Washer)n H5019130 SCREW M3x6 BINDING W/PW+SW ZC

(Normal Washer)o 40015901 E-RING M2.5 SUSp 40342690 HEX BOLT M6x85 HALF THREAD BZCq 40016067 PLAIN WASHER 6x13x1 BZCr 40016001 NUT M6 U BZCs 40019123 SCREW 3x8 BINDING TAPTITE S BZC

35

2034

g

37

21

1

17

16

15

14

13

s

2623

3

d

42728

25

a

8

24

36r

5

6

k

33

10

b

c

19

18

42

40

38

39

f

e

11i

9

s

12

k

h

n

h

c

d

22

7

m

h

h

s

6

Sep. 2001
WIRING DIAGRAMfig.wiring
MAIN BOARD ASSY

SW1 BOARD ASSY

ENC BOARDASSY

SW2 BOARD ASSY

SW3 BOARDASSY

EXP BOARDASSY

SW4 BOARDASSY

CN11

CN7 CN2CN6CN3

CN8CN7

CN4

CN5

CN6

CN3

CN1

CN2

CN4

CN8

CN10

WIRING 8P WIRING 11P WIRING 7P

RIBON 3P

RIBON 7P

WIRING 10P

WIRING 3P

WIRING 2P

8

GT-6(T)

PARTS LIST

fig.part1e

fig.part2e

MB -> MAIN BOARD ASSY, SW -> SW SHEET ASSY

SAFETY PRECAUTIONS:The parts marked have safety-related characteristics. Use only listed parts for replacement.

SAFETY PRECAUTIONS:The parts marked have safety-related characteristics. Use only listed parts for replacement.

QTY PART NUMBER DESCRIPTION MODEL NUMBEREx. 10 22575241 Sharp Key C-20/50

15 2247017300 Knob (orange) DAC-15DFailure to completely fill the above items with correct number and description will result in delayed or even undelivered replacement.

NOTE: The parts marked # are new. (initial parts)

NOTE: Consider about the natural environment carefully before through the old lithium battery away when you exchange to the new one.

CASING Q'ty

# G2017150 BOTTOM COVER 1# G2357120 FOOT H=5 5

G2227301 PEDAL ESCUTCHEON 7G2357109 PEDAL FOOT 7G2187602 SWITCH PEDAL 7

# G2017152 TOP COVER 1# G2187533 VR PEDAL 1

KNOB, BUTTON

01340412 P R-KNOB SF-A BLK/LCG 112499175 G S-BUTTON S1H BLK 249-175 122485303 D R-KNOB L BLK 248-303 for ALPHA-DIAL 1G2477122 R-KNOB 15G247751001 kEYTOP S BLACK WITH LENS for SW 19G247751301 KEYTOP S WITHOUT LENS for SW 4

SWITCH

# G2567120 RUBBER SW 101676512 SDKLA1-B PUSH SWITCH SW1 on MB 101780101 SKQKAB TACT SWITCH SW9,SW10,SW11,SW12,SW13,SW14,SW15,

SW16,SW17,SW18,SW19,SW20,SW21,SW22,SW23,SW24,SW25,SW26,SW27,SW28,SW29,SW30,SW31 on SW

23

13129778 SKQKAH TACT SWITCH SW1,SW2,SW3,SW4,SW5,SW6,SW7 on SW 7

JACK, EXT TERMINAL

13449155MF HTJ-064-12I PHONE JACK (MONO) JK1,JK3,JK4,JK5,JK6 on MB 513449150MF HTJ-064-12D PHONE JACK (STEREO) JK2,JK11 on MB 201343723 YKC21-3117(ORANGE) RCA(PIN) JACK JK9 on MB 113429825 YKF51-5054 2PZ MIDI CONNECTOR JK8 on MB 113449728 HEC0740-010010 ADAPTOR JACK JK7 on MB 1

DISPLAY UNIT

# F5029405 LMC-SSC2K16DLNY-H01 LCD 1# F5029412 A-552SR BW 7SEG LED LED29 on SW 1

PCB ASSY

# 75D523M000 MAIN BOARD ASSY 1# 75D523S000 SW SHEET ASSY 1

IC

# 02676190 HD6412312VF IC (CPU) IC21 on MB 102231767 RA0A-101 (TC223C080AF-101) IC (DSP) IC20 on MB 102451434 AK4552VT IC (AD/DA) IC3,IC8 on MB 2******** LH28F400BVE-BL85 IC (FLASH MEMORY/

BLANK)IC26 on MB 1

01785178 TC9271FS IC (DIF/TRANS MITTER) IC19 on MB 102453389 LC32V4265T-25 IC (DRAM) IC24 on MB 1

# 02672378 UPD431000AGW-A10 IC (SRAM) IC22 on MB 115289109 M5216FP-600D IC (BIPOLAR OP AMP) IC5 on MB 115189261 M5218AFP-600E IC (BIPOLAR OP AMP) IC6,IC4 on MB 200346445 NJM2100M(TE3) IC (BIPOLAR OP AMP) IC7,IC2 on MB 215259769T0 TC74HC238AF(EL) IC (CMOS) IC29 on MB 115169596 TC74HC4051AP IC (CMOS) IC4,IC5 on SW 201901623 TC74LVXC3245FS IC (CMOS) IC14 on MB 1

9

Sep. 2001

01670745 TC74VHCT541AF IC (CMOS) IC18 on MB 102232834 TC7SH04F(TE85L) IC (CMOS) IC27,IC17 on MB 215249121 TC7W04F(TE12L) IC (CMOS) IC16 on MB 102340756 TC7WH32FU(TE12L) IC (CMOS) IC28 on MB 100458034 TC75S51F TE85R IC (OP AMP) IC25 on MB 115289106 M5238AFP-600C IC (JFET OP AMP) IC1 on MB 102453056 BU2090F-E2 IC (LED DRIVER) IC1 on SW 1

# 02678945 BU2090 IC (LED DRIVER) IC2,IC3,IC6 on SW 315289124 PC-400 IC (PHOTO COUPLER) IC13 on MB 102012789 BA17805FP-E2 IC (REGULATOR) IC10 on MB 1

# 02786678 S-81233SGY IC (REGULATOR) IC31 on MB 102563467 NJM2374AM-TE1 IC (SWITCHING REGULA-

TOR)IC9 on MB 1

15289123 M51953AFP-600C IC (RESET) IC15 on MB 1

IC

TRANSISTOR

# F5309115 2SA1241-Y TRANSISTOR Q12 on MB 115309104 2SA1586-GR(TE85R) TRANSISTOR Q5,Q15 on MB 2

# F5309601 2SB1132 TRANSISTOR Q14 on MB 1# F5309602 2SB1182 TRANSISTOR Q8 on MB 1

15319107 2SC4116-GR(TE85R) TRANSISTOR Q9 on MB 1# F5319601 2SD1664 TRANSISTOR Q13 on MB 1# F5319602 2SD1758 TRANSISTOR Q7 on MB 1

15329501 DTA143EKA T146 DIGITAL TRANSISTOR Q11 on MB 102340645 RN1441-A(TE85L) DIGITAL TRANSISTOR Q1,Q2,Q3,Q4,Q6 on MB 515129215 RN2207-TPE4 DIGITAL TRANSISTOR Q1,Q2,Q3,Q4 on SW 4

DIODE

15019126 1SS133 T-77 SWITCHING DIODE D1,D2,D3,D4,D5,D6,D7,D9,D10,D11,D12,D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D24,D25,D26,D27,D28,D29,D30,D31on SW

30

15339119T0 1SS352(TPH3) SWITCHING DIODE D1,D6,D8,D10,D11,D16,D17 on MB 7F5019209RT 1N4004 DIODE D2,D4,D5,D12 on MB 402783023 RB500V-40 DIODE D9 on MB 1F5339137 SS14 VF=0.45V DIODE D3 on MB 1F5339310 RD10ESAB2 ZENER DIODE D13,D14 on MB 2F5029117 L-312LRD LED (RED) LED9,LED10,LED11,LED12,LED13,LED14,

LED15,LED16,LED17,LED18,LED19,LED20,LED21,LED22,LED23,LED24,LED25 on SW

17

1502928100 L-34HDSL LED (RED) LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8 on SW

8

F5029111 L-3WSRSGW-CC LED (RED/GREEN) LED27,LED28 on SW 215339120T0 1SS302(TE85R) DIODE ARRAY DA3,DA4 on MB 2

RESISTOR

F3829254 47 OHM(2W) CARBON RESISTOR R11,R14 on MB 213749775T0 SR25TRE 121 J CARBON RESISTOR R23,R21 on SW 213749789T0 SR25TRE 471 J CARBON RESISTOR R31,R32,R33,R34,R35,R36,R37,R38,R39,R40,

R41,R42,R43,R44 on SW14

00566867 RPC05T 100 J MTL.FILM RESISTOR R9,R54,R109 on MB 300567023 RPC05T 101 J MTL.FILM RESISTOR R69,R108 on MB 200567156 RPC05T 102 J MTL.FILM RESISTOR R21,R22,R32,R33,R55,R56,R100,R104,R107,

R113 on MB10

00567289 RPC05T 103 J MTL.FILM RESISTOR R2,R6,R12,R13,R16,R19,R24,R27,R30,R35,R37,R38,R41,R45,R47,R48,R52,R61,R72,R76,R80,R82,R102,R105,R119,R120,R130,R132,R133,R134,R137 on MB

31

00567412 RPC05T 104 J MTL.FILM RESISTOR R23,R34,R58,R59,R116 on MB 500567556 RPC05T 105 J MTL.FILM RESISTOR R39,R7 on MB 200567034 RPC05T 121 J MTL.FILM RESISTOR R67 on MB 100567167 RPC05T 122 J MTL.FILM RESISTOR R40,R1 on MB 200567178 RPC05T 152 J MTL.FILM RESISTOR R65,R142 on MB 200567189 RPC05T 182 J MTL.FILM RESISTOR R66 on MB 100567312 RPC05T 183 J MTL.FILM RESISTOR R42,R3 on MB 200566912 RPC05T 220 J MTL.FILM RESISTOR R77 on MB 100567190 RPC05T 222 J MTL.FILM RESISTOR R112,R68 on MB 200567456 RPC05T 224 J MTL.FILM RESISTOR R46 on MB 100567089 RPC05T 331 J MTL.FILM RESISTOR R25,R36,R74 on MB 300567345 RPC05T 333 J MTL.FILM RESISTOR R51,R57 on MB 200567112 RPC05T 471 J MTL.FILM RESISTOR R70 on MB 100567245 RPC05T 472 J MTL.FILM RESISTOR R85,R91,R94,R103,R106,R110,R111,R114,R1

15 on MB9

00567378 RPC05T 473 J MTL.FILM RESISTOR R17,R20,R28,R31,R49,R60,R122,R123,R124 on MB

9

00567501 RPC05T 474 J MTL.FILM RESISTOR R84 on MB 100567001 RPC05T 750 J MTL.FILM RESISTOR R71 on MB 100567401 RPC05T 823 J MTL.FILM RESISTOR R26,R15 on MB 215399349 RPC10T 100 J 1/10W MTL.FILM RESISTOR R139,R140,R141 on MB 301905012 RR0816P-123-D MTL.FILM RESISTOR R4,R8,R43,R50 on MB 4

10

GT-6(T)

01909734 RR0816P-682-D MTL.FILM RESISTOR R10,R53 on MB 202122623 RR0816R-104-D MTL.FILM RESISTOR R5,R44 on MB 2

# F5399911 0.68 (1/2W) RESISTOR R62 on MB 1# F5399912 1.8K (F-RANK) RESISTOR R64 on MB 1# F5399919 1M(F-RANK) RESISTOR R81 on MB 1# F5399917 22 (1/2W) RESISTOR R75 on MB 1# F5399913 3K (F-RANK) RESISTOR R63 on MB 1# F5399920 4.7M(F-RANK) RESISTOR R121 on MB 1# 13749787T0 SR25TRE 391J 1/6W RESISTOR R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,R

13,R14,R15,R16,R17,R18,R19,R20,R22,R24,R25,R26,R27,R28,R29 on SW

27

F5419707 CRN34101J RESISTOR ARRAY RA1,RA2,RA4,RA6,RA12,RA15 on MB 6F5419705 CRN34103J RESISTOR ARRAY RA11,RA14,RA18,RA19,RA28 on MB 5F5419706 CRN34104J RESISTOR ARRAY RA5,RA3 on MB 2

RESISTOR

POTENTIOMETER

F3279802 RD901-40-125F-B54-00D 50KB 9M/M ROTARY POT. W/CLICK

VR2,VR4,VR6,VR7,VR8,VR9,VR10,VR11,VR12,VR13,VR15,VR16 on SW

12

F3279804 RD901-40-125F-B54-06D 50KB 9M/M ROTARY POT. 6 CLICKS

VR3,VR14 on SW 2

F3279803 RD901-40-125F-B54-11D 50KB 9M/M ROTARY POT. 11 CLICKS

VR5 on SW 1

01676523 RK09K12A0 10KAx2 9M/M ROTARY POT. VR1 on MB 101016167 RK11K1140(10K SP B) 10Kx1 11M/M ROTARY POT. VR1 on SW 1

CAPACITOR

01674167 ECJ1VC1H100D CERAMIC CAPACITOR C3,C6,C16,C25,C38,C41,C42,C145,C146,C154 on MB

10

01674701 ECJ1VF1E104Z 0.1UF/16VK CERAMIC CAPACITOR C7,C9,C12,C14,C44,C48,C50,C53,C58,C59,C77,C78,C79,C80,C83,C84,C86,C87,C88,C89,C91,C92,C93,C95,C96,C98,C99,C100,C101,C102,C103,C105,C106,C107,C108,C109,C110,C111,C112,C114,C115,C118,C120,C123,C124,C125,C128,C131,C132,C134,C135,C136,C138,C139,C140,C141,C142,C147,C148,C149,C159,C160,C162,C163 on MB

64

01674356 ECUV1H151JCV CERAMIC CAPACITOR C23,C33,C62 on MB 300567823 GRM39B102K50PT CERAMIC CAPACITOR C15,C24,C43,C54,C127 on MB 500567945 GRM39B103K50PT CERAMIC CAPACITOR C1,C36,C129,C130 on MB 401672412 GRM39CH150J50PT CERAMIC CAPACITOR C121,C119 on MB 213639550S0 16MV100HW+T 100UF/16V CHEMICAL CAPACITOR C21,C31,C66,C68,C69,C72,C157 on MB 713639546S0 16MV10HW+T CHEMICAL CAPACITOR C4,C8,C10,C11,C17,C18,C19,C20,C26,C27,C

28,C29,C30,C34,C39,C40,C46,C47,C49,C51,C52,C94,C97,C104,C113,C116,C122,C126,C133,C143,C150,C151,C152,C153 on MB

34

13639549S0 16MV47HW+T CHEMICAL CAPACITOR C13,C45,C76,C81 on MB 4# 13639582S0 35MV100HW+T CHEMICAL CAPACITOR C64,C67,C70,C74 on MB 4

13639195S0 35MV2200HW(SME35VB2200) CHEMICAL CAPACITOR C56 on MB 1# 13639598 35MV220HW+T CHEMICAL CAPACITOR C144 on MB 1

13639599S0 35MV470HW+T CHEMICAL CAPACITOR C65,C71 on MB 2# 13609111 50MVR33HW+T CHEMICAL CAPACITOR C90 on MB 1

13639113S0 6MV470HW CHEMICAL CAPACITOR C61,C35 on MB 213519694 RPE132-901F104Z50 MLT.LAY.CERAMIC CAPACI-

TORC1,C2,C3,C4,C5 on SW 5

13549279M0 ECQ-M1H104JF3 POLYEST. CAPACITOR C5 on MB 101128045 ERZVA7V330 VARISTOR CAPACITOR C55 on MB 1

INDUCTOR, COIL, FILTER

13529246 DSS310-91D223S-50ATL12-134 EMI FILTER FL1,FL2 on MB 212449386 SBT-0180W EMI FILTER L15 on MB 1

# F2449220 TSL1112SRA-471KR72 INDUCTOR L11 on MB 1

CRYSTAL, RESONATOR

# 02672401 SG-8002JC 67.7376MHZ PC CRYSTAL X1 on MB 100894023 MA-406 20.000MHZ TE24 CRYSTAL X2 on MB 1

ENCODER

01905467 EVE GC1 F20 24B ROTARY ENCODER EN1 on SW 1

CONNECTOR

# F3439160 53015-0210 CONNECTOR CN8 on MB 1F3439166 A2001WR2-11P CONNECTOR CN3 on MB 1

# F3439179 A2001WR2-7P CONNECTOR CN6 on MB 1F3439164 A2001WR2-8P CONNECTOR CN7 on MB 1F3439165 A2001WV2-10P P=2MM CONNECTOR CN2 on MB 1

# F3439178 A2541WV2-2A16NP CONNECTOR 1

11

Sep. 2001

F3439121 A2541WR2-2A16NP CONNECTOR 16P CN1 on MB 1F3439123 A2001WR2-3P CONNECTOR 3P CN4 on MB 1

CONNECTOR

WIRING, CABLE

# G3467180 16P L=160MM LCD WIRING 1G3477146 3P L=40X5X5 MM P=2MM RIBBON CABLE CN5,CN6 on SW 1

# G3477156 7P P=2MM L=140MM RIBBON CABLE CN1,CN3 on SW 1# G3467179 10P P=2MM L=120MM WIRING CN2 on SW 1# G3467177 11P P=2MM L=65MM WIRING CN7 on SW 1# G3467174 2P P=2MM L=150MM WIRING CN10 on SW 1# G3467175 3P P=2MM L=115MM WIRING CN4 on SW 1# G3467176 7P P=2MM L=115MM WIRING CN8 on SW 1# G3467178 8P P=2MM L=65MM WIRING CN11 on SW 1

TRANSFORMER

02563501 PT-10 (2280-T008) PULSE TRANS TR1 on MB 1

SCREWS

40342701 SCREW M2.3x8 BINDING TAP TIGHT P ZC 1# H5019130 SCREW M3x6 PAN MACHINE W/SW+PW

ZC5

H5019124 SCREW M3x6 PAN MACHINE W/SW+SMALL PW ZC

10

40011312 SCREW 3x8 BINDING TAPTITE P BZC 340011278 SCREW 3x8 BINDING TAPTITE P FE ZC 2040019123 SCREW 3x8 BINDING TAPTITE S BZC 1840127689 SCREW M3x10 BINDING TAPTIGHT S TYPE

FE BZC3

# H5029854 BOLT M3x12 HEX BUTTON FENI 640342690 HEX BOLT M6x85 HALF THREAD BZC 140016001 LOCK NUT M6 U BZC 1

# ******** M9 NUT (for ENCODER) 1# H5039520 M9 NUT (for VR) 15# H5039510 NUT M9x12x2 FENI (for Phone Jack) 7

40015901 E-RING M2.5 SUS 1# H5039126 M9 WASHER (for ENCODER) 1# H5039112 M9 WASHER (for Phone Jack) 7

40016067 PLAIN WASHER 6x13x1 BZC 2

PACKING

# G2607214 PACKING CASE 1# G2237620 PAD L 1# G2237616 PAD R 1# G2617273 OUTER PACKING CASE 1

MISCELLANEOUS

G2147118 AC JACK HOLDER on MB 1G2147119 BOLT HOLDER 2

# G2607215 COLOR SLEEVE 122360712 CORD HOOK 236-712 1G2357111 CUSHION R 1

# G2567119 DISPLAY COVER 1# G2567118 ESCUTCHEON (ABS,for PANEL) 1# G2237112 GUARD 1# G2237113 GUARD PLATE 1

40016523 INSULOK TIE 100M/M T-18R <<1000 PCS ORDERING PER>>

2

G2257203 JACK COVER on MB 1# H2369431 LED SPACER 3-2 for SW 1

12569249S0 LITHIUM BATTERY CR2032 220MAH/3V BT1 for MB 112189815 LITHIUM BATTERY HOLDER BH-32 BT1 on MB 1

# G2187904 PEDAL HOLDER 1# G2217138 PEDAL LABEL(1) 1# G2217139 PEDAL LABEL(2) 1# G2217140 PEDAL LABEL(3) 1# G2217143 PEDAL LABEL(4) 1# G2217144 PEDAL LABEL(CTL) 1# G2217142 PEDAL LABEL(DOWN) 1# G2217141 PEDAL LABEL(UP) 1

G2147117 PIN STAY 1# G2567121 RUBBER SW ESCUTCHEON 1

G2147116 SHAFT STAY 1H2369401 SPACER 3X6X10 for SW 7G2177103 SUPPORT SPRING 7G2357112 VR PLATE 1

12

GT-6(T)

ACCESSORIES (STANDARD)

# G6017297 OWNER’S MANUAL JAPANESE 1# G6017298 OWNER’S MANUAL ENGLISH 1

01786212 AC ADAPTOR BRC-100T 101786223 AC ADAPTOR BRC-120T 101786234 AC ADAPTOR BRC-230T 101786245 AC ADAPTOR BRC-240AT 100905234 EURO CONVERTER PLUG ECP01-5A (PLUG for 230V) 1

# H5279511 READ ME FIRST JAPANESE/ENGLISH 140232389 WARRANTY CARD (JAPAN ONLY) 1

13

Sep. 2001

IDENTIFYING THE VERSION

NUMBER

1.

Turn the power off.

2.

While pressing [NAME/NS/MASTER],[UTILITY] and [MANUAL] button, turn on power.

3.

The version number is displayed.

fig.LCD1

TRANSMITTING / RECEIVING

DATA VIA MIDI

The GT-6 can use exclusive messages to set another GT-6 to the same settings, or to transmit its settings to a device such as a sequencer for storage.

The process of transmitting such data is called bulk dump, and the process of receiving such data is called bulk load.

BULK DUMP

1.

Press [UTILITY] button, then press PARAMETER [<] [>] button so that “Bulk Dump” is displayed.

fig.Dump-1

2.

Press PARAMETER [<] [>] button to move the cursor, and rotate the [PATCH/VALUE] dial to select the start and end of the data to be transmitted.

3.

When the data to be sent has been determined, press [WRITE] button.

The data is transmitted.

fig.Dump-2

When the transmission is completed, the screen prior to transmission returns to the display.

4.

Press [EXIT] button to return to the Play screen.

BULK LOAD

1.

Press [UTILITY] button, then press PARAMETER [<] [>] button so that “Bulk Load” is displayed.

fig.Load-1

2.

Transmit the data from the external MIDI device.

The following appears in the display when the GT-6 receives the data.

fig.Load-2

The following appears in the display when the GT-6 finishes receiving the data.

fig.Load-3

At this stage, even more data can be received.

3.

Press [EXIT] button to quit Bulk Load.

After you press [EXIT] button, “Checking...” appears in the display, indicating that the GT-6 is checking the received data.

When the check is completed, the Play screen returns to the display.

TEST MODE

* Note: When user data is present, always back it up on the sequencer (MC-80, etc.) before repair.

(Refer to “Saving data” and “Loading data” for the user data storage procedures).

Individual inspection items

1.DSP Check

2.Display

3.LCD Contrast

4.Switch

5.VR Check

6.EXP PEDAL

7.Battery

8.MIDI IN/OUT

9.OUTPUT D/A

10.EXT OD/DS

11.INPUT A/D

12.DSP INTO

13.Noise (IN -> OUT)

14.Noise (EXT)

15.Calibrete EXP

16.Factory Load

Required items

• Expression Pedal (Roland EV-5)

• MIDI Cable

• Noise Meter

• Oscilloscope

• Oscillator

• Equipment with digital input

• Empty plug

How to enter test mode:

•

Starting from “1.DSP Check”.

Turn on the unit while pressing the [DELAY] and [DELAY TAP] buttons simultaneously.

The ROM version and the checksum will be displayed first.

Proceed to “1.DSP Check” by pressing the [EXIT] button.

fig.LCD1

•

Starting from “9.OUTPUT D/A”.

Turn on the unit while pressing the [CHORUS] and [REVERB] buttons simultaneously.

“1.DSP Check” result is displayed first, then it proceeds to “9.OUTPUT D/A”.

14

GT-6(T)

1.

DSP Check

fig.LCD2

DSP (IC20) and DRAM (IC24) are automatically checked and their results displayed.

If an error occurs, its contents will be displayed, and if no problems exist, “OK” is displayed.

After the inspection completes, it will automatically proceed to the next inspection.

2.

Display

fig.LCD3

All of the LCD and LED segments will be on.

Press the [EXIT] button to proceed to the next inspection.

3.

LCD Contrast

fig.LCD4

Turn the [VALUE] encoder knob in the following order and confirm that the LCD contrast changes.

1) Turning the knob anti-clockwise dims the contrast.

fig.LCD5

2) Turning the knob clockwise brightens the contrast.

fig.LCD4

Change the LCD contrast from ‘15 -> 0 -> 15’, and it will automatically proceed to the next inspection.

4.

Switch

fig.LCD6

The button names to be inspected are displayed on the lower part of the LCD.

Press the displayed button switches.

“Wrong switch!” is displayed when a wrong button is pressed.

Also, for buttons with LEDs confirm that:

1) All the LEDs that are on are red prior to pressing them.

2) The LEDs go out after the buttons are pressed.

However, for [PREAMP/SPEAKER TYPE VARIATION] and [OD/DS TYPE VARIATION], the color changes from red to green.

Confirm the following two points.

Press the switches in the following order.

[1] Effect select button/Edit button group inspection Press according to the LCD display.

[PREAMP/SPEAKER] -> [PREAMP/SPEAKER TYPE VARIATION]->[OD/DS] -> [OD/DS TYPE VARIATION] -> [DELAY] -> [DELAY TAP] ->[CHORUS] -> [REVERB] -> [FX-2] -> [FX-1] -> [EQ] -> [WAH] -> [PARAMETER (<)] -> [EXIT] -> [PEDAL ASSIGN] -> [NAME/NS/MASTER] -> [UTILITY] -> [OUTPUT SELECT] -> [WRITE] -> [PARAMETER (<)] -> [EZ TONE] -> [TUNER/BYPASS] -> [MANUAL]

[2] The pedal switch group and expression switch inspection

[BANK DOWN] -> [BANK UP] -> [EXP PEDAL SW] -> [CTL PEDAL] -> [PEDAL 4] -> [PEDAL 3] -> [PEDAL 2] -> [PEDAL 1]

[3] 7 seg LED

Confirm that the 7 seg LED segments go out one by one each time [WAH] is pressed.

Pressing the [WAH] switch 14 times turns all the segments off .

After the [3] 7seg LED inspection completes, it will automatically proceed to the next inspection.

5.

VR Check

fig.LCD7

Turn all the VRs anti-clockwise all the way (set to MIN position).

The names of the VRs to be inspected are displayed on the lower part of the LCD.

Turn the displayed VR.

[PATCH LEVEL]->[SPEAKER]->[PRE LEVEL]->[PRE TREBLE]->[PRE MIDDLE]->[PRE BASS]->[PRE GAIN]->[PRE TYPE]->[OD/DS TYPE]->[OD/DS DRIVE]->[OD/DS LEVEL]->[DELAY FEEDBACK]->[DELAY LEVEL]->[CHORUS]->[REVERB]

1) Without click - the 7 seg LED segments come on from the bottom according to the positions of the VR knobs, except for the “SPEAKER”, “PREAMP/SPEAKER TYPE” and “OVERDRIVE/DISTORTION TYPE” VRs.

To proceed to the next VR inspection, turn the knob all the way to the right ( [MIN] -> [MAX] ).

2) With click - the numbers are displayed for the 7 seg LED segments according to the clicked position, except for the “SPEAKER”, “PREAMP/SPEAKER TYPE” and “OVERDRIVE/DISTORTION TYPE” VRs.

“SPEAKER” : [1x10] -> [ORIGINAL]

“PREAMP/SPEAKER TYPE” : [JC CLEAN] -> [CUSTOM]

“OVERDRIVE/DISTORTION TYPE” : [OD/BOOST] -> [CUSTOM/EXTERNAL]

To proceed to the next VR inspection, turn the knob all the way to the right ( [MIN] -> [MAX] ).

After the [REVERB LEVEL] VR inspection completes, it will automatically proceed to the next inspection.

6.

EXP PEDAL

fig.LCD8

Confirm the changes on the EXP pedal of this unit and the EXP pedal (SUB EXP PEDAL) connected to the [SUB EXP PEDAL/SUB CTL 1,2] jack.

Connect the EV-5 to the [SUB EXP PEDAL/SUB CTL 1,2] jack.

The EXP pedal of this unit is inspected first, then the SUB EXP PEDAL.

1) Bringing the pedal’s tilt to the center (middle value) will display “***” in the center display.

fig.LCD9

or

15

Sep. 2001

fig.LCD13

2) Pressing further (maximum value) displays “***” on the right display.

fig.LCD10

or

fig.LCD14

3) Finally, returning the pedal forward (minimum value) displays “***” on the left display, and the inspection for that pedal is complete.

fig.LCD11

or

fig.LCD15

After the EXP PEDAL inspection completes, it will automatically proceed to the next inspection.

7.

Battery

fig.LCD16

The voltage of the memory backup battery is displayed.

To proceed to the next inspection, press the [EXIT] button.

8.

MIDI IN/OUT

fig.LCD18

Connect the MIDI IN connector and the MIDI OUT connector with a MIDI cable.

“No Connect” is displayed if the connectors are not connected with a MIDI cable.

If the connectors are properly connected, “Verify OK !” is displayed.

After the MIDI IN/OUT inspection completes, it will automatically proceed to the next inspection.

fig.LCD17

9.

OUTPUT D/A

Note : Check both L(MONO) and R.

Also, when the OUTPUT jack is used for a single channel, the L and R signals will be internally mixed, therefore, empty plugs must be inserted in the R channel for L(MONO) channel measurement and in the L(MONO) channel for R channel measurement, respectively.

fig.LCD19

Confirm these three points.

A) Using an oscilloscope, observe that a short wave is obtained from OUTPUT .

B) Since output mute is automatically made ‘On/Off’, make sure that it is on.

C) Confirm that the level changes when the OUTPUT knob is turned.

fig.LCD20

Oscilloscope : 1.0 V/DIV, 0.5 ms/DIV

Mute = Off Mute = On

fig.1

fig.2

D) Confirm that a same waveform as that from OUTPUT is obtained from Phones.

E) Confirm that a short wave is obtained from Send and that mute is effective.


Mute = Off Mute = On

16

GT-6(T)

fig.3

fig.4

To proceed to the next inspection, press the buttons in [EXIT] -> [PARAMETER (>)] sequence.

10.

EXT OD/DS

fig.LCD21

Confirm the following two points.

A) Using an oscilloscope, observe that a short wave is obtained from OUTPUT.

fig.10ext-1e

B) Insert an open plug in the RETURN jack and confirm that there is no output.

fig.10ext-2e

Note: Check both L(MONO) and R.


OUTPUT Level Control : MAX


Insert an empty plug in RETURN

fig.4

fig.2

To proeed to the next inspection, press the [EXIT] button.

DSP D/A SEND (Signal source)

DSP A/D RETURN D/A OUTPUT (Rectangular waveform)

DSP D/A SEND (Signal source)

DSP A/D RETURN D/A OUTPUT (Rectangular waveform)

(Cut off)

17

Sep. 2001

11.

INPUT A/D

fig.LCD22

Input a short wave, and observe the output waveform using an oscilloscope.



INPUT : Rectangular Waveform, 400 Hz, 40 mVp-p

OUTPUT Level Control : MAX


fig.5


12.

DSP Pitch interruption signal

fig.LCD23

Confirm the pitch interruption signal generated from the DSP’s internal oscillation.

If an error occurs, its contents will be displayed.

If no error occurs, it will automatically proceed to the next inspection.

13.

Noise (IN -> OUT)

fig.LCD24



OUTPUT Level Control: MAX

Confirm that the residual noise is -74 dBm (JIS-A) or lower.

fig.13noise-e


14.

Noise (EXT)

fig.LCD25


Also, when the OUTPUT jack is used for a single channel, the L and R signals will be internally mixed, therefore an empty plug must be inserted in the R channel for L(MONO) channel measurement, and an empty plug must be inserted in the L(MONO) channel for R channel measurement.

OUTPUT Level Control: MAX

Confirm that the residual noise is -64 dBm (JIS-A) or lower.

fig.14noise-e


DSP A/D INPUT

D/A OUTPUT (Connect noise meter)

�

DSP A/D INPUT

D/A SEND

DSP A/D RETURN D/A OUTPUT (Connect noise meter)

18

GT-6(T)

15.

Calibrate EXP

fig.LCD26

1) The maximum and minimum values of the EXP pedal are set up.

fig.LCD27

fig.arrow

fig.LCD26

2) To set up the minimum value, press the [WRITE] button.

fig.LCD28

fig.arrow

fig.LCD26

3) Fully press the EXP pedal and release your hands.

4) To set up the maximum value, press the [WRITE] button.

When the calibration setup is completed, will automatically proceed to the next inspection.

16.

Factory load

fig.LCD29

To overwrite the factory preset data, press the [WRITE] button three times.

fig.LCD30

This ends test mode.

When the following displayed appears, turn off the power.

17.

DIGITAL OUT

After the test mode is completed, connect external equipment that has a DIGITAL IN terminal to DIGITAL OUT, and confirm that the sound is properly output from DIGITAL OUT of the GT-6.

RESTORING THE FACTORY SETTINGS (FACTORY RESET)1. Turn off the power.

2. While holding down PREAMP/SPEAKER On/Off button and [TYPE VARIATION], turn on the power.

The Factory Reset range setting screen appears in the display.fig.FR-1e

* To cancel Factory Reset, press [EXIT] button.

3. Press PARAMETER [<] [>] button to move the cursor, and rotate the PATCH/VALUE dial to specify the range of settings you want to restore to factory settings.

System:

System parameters, Harmonist scales, Auto Riff phrases, and Preamp, Overdrive/Distortion, and Wah Custom Edit parameter settings

#1-1-#35-4:

Settings for Patch Number 1-1 through 35-4

4. If you want to proceed with the factory reset, press [ENTER] button.

The specified range of data will be returned, and return to the Play screen.

HOW TO UPDATE SYSTEM SOFTWARE

Required items• Sequencer (MC-80, etc.)

• MIDI cable

• Update Disk (#17041087)

* Notes

Do not turn the GT-6 unit’s power off while writing the system software.

The GT-6 will not operate because the system will not be properly written into the flash ROM.

* Notes

After updating, execute “TEST:15.Calibrate EXP” and “TEST:16.Factory Load” while in the test mode.

The System Update Via SMFThe GT-6 system is supplied in standard MIDI file (SMF) format.

The following SMF data is stored on the disk. Starting with GT6_01.mid, transfer all data to the GT-6 in the respective order.

GT-6 System Ver.*.** SMF Disk : GT6_01.mid, GT6_02.mid, GT6_03.mid, GT6_04.mid, GT6_05.mid, GT6_06.mid, GT6_07.mid, GT6_08.mid

Update the GT-6’s system in the following order.1. Using a MIDI cable, connect the MIDI OUT connector of the sequencer to

the MIDI IN connector of the GT-6.

2. Turn the GT-6’s power on while pressing the [FX-2] and [PEDAL ASSIGN] and [UTILITY] buttons simultaneously.

The unit is in reception standby status if the LCD displays “Flash Update ALL BLOCK” then displays “Waiting SMF Data [GT6_01.mid]”.

The area of data you wish to factory reset.

19

Sep. 2001

3. The GT6_01.mid SMF data will be sent from the sequencer to the GT-6.

When the GT-6 receives the MIDI signal, the write address and the checksum will be displayed on the LCD.

When all the GT6_01.mid SMF data has been received, the GT-6 writes the received data to the flash ROM.

When it finishes writing, the GT-6 displays “Waiting SMF Data [GT6_02.mid]” on the LCD display.

Next, the GT6_02.mid SMF data is sent from the sequencer.

When the sequencer receives the MIDI signal, the write address and the checksum will be displayed on the LCD.

Play the SMF data in the manner stated above one by one in the respective sequence up to GT6_08.mid.

3-1.GT-6 : “Waiting SMF Data [GT6_01.mid]” -> MC-80 : GT6_01.mid play








4. After the GT-6 receives all the SMF data, it will display the checksum (4-digit number) of the system software on the LCD display, so confirm it.

5. Execute “TEST:15.Calibrate EXP” and “TEST:16.Factory Load” while in the test mode.

Updating is now completed.

20

GT-6(T)

BLOCK DIAGRAMfig.block

CN7

IC3CODECAK4552

IC20 DSP

IC24DRAM 4M

IC22SRAM 1M

IC26 Flash 4M

LCD UNIT

SW 2 BOARD ASSYPEDAL SW,LED

IC8CODECAK4552

OUTPUT L

OUTPUT R

RETURN

SEND

PHONES

MIDI OUT IN

OUTPUTVOLUME

IC21 CPUH8S/2318

SUB EXP PEDALSUB CTL 1,2

INPUT

JK5

JK6 IC6b

IC6a IC7a

IC7b

IC4bIC5b

IC5a IC4aVR1a

VR1b

IC2a

IC2bIC1b

JK4

JK3

JK2

JK1

JK11

EXT OD/DS

EXT OD/DS

JK8

CN2

CN1

CN2

SW 1 BOARD ASSYPANEL SW,LED

CN11

EXP BOARD ASSYPEDAL VR

CN4CN4

MAIN BOARD ASSYDIGITAL OUT

SW4 BOARD ASSYCARBON SW

CN10CN8 ENC BOARDENCODER

SW 3 BOARD ASSYPEDAL SW,LED

TR1R71 IC17IC19TC9271FS

CN5

CN6

CN11

CN3

CN6 CN8

CN3 CN7

21

GT-6(T)

View from components side

23

Sep. 2001

CIRCUIT BOARD (MAIN)

fig.wiring

22

GT-6(T)

View from foil side

25

Sep. 2001

CIRCUIT BOARD (MAIN)

fig.sk949-c

24

GT-6(T)

DIGITAL OUT

AIN BOARD ASSY (Digital)

ED3

ED0

ED0

ED4ED3

ED6

ED1

ED6

ED7

ED2

ED7

ED5

ED2ED1

ED4ED5

RESET

MUTE

D

+D 3. 3

D

DD

D

D

D

+D 3. 3

D

+D 3. 3

D

D

+D 3. 3

+D 3. 3

D

+D 3. 3

D

D

+D 3. 3

D

+D 3. 3

D

C97 10/16

R7175

R78

N.I.U

C92 0.1

C99 0.1

R74330

C1240.1

C106 0.1

IC19TC9271FS

BLOCK 1

UBDA2

LRS 3

LRCK4

NC5

BCK6

DATA7

VLDY8

EMPH 9

COPY10

FS1 11FS2 12

CKS13

XI14

VS

S15

DO1 16DO2 17

M1 18M2 19

IS1 20IS2 21

CTG122 CTG223 CTG324

FR3225

NC26

LBIT27 CKA1 28CKA2 29

VD

D30

C9410/16

RA11CRN34103J

1 82 73 64 5

C107 0.1

C110 0.1

C100 0.1

A JK9BYKC21-3117

10

IC24

LC32V4265T-25-TLM

VCC 1

I/O1 2I/O2 3I/O3 4I/O4 5

VCC 6

I/O5 7I/O6 8I/O7 9I/O8 10

NC13

NC14

WE15

RAS16

NC17

A018 A119 A220 A321

VCC 22

VSS 23

A424 A525 A626 A727 A828

OE29

UCAS30

LCAS31

NC32

I/O9 35I/O10 36I/O11 37I/O12 38

VSS 39

I/O13 40I/O14 41I/O15 42I/O16 43

VSS 44

C103 0.1

C81 47/16

C95 0.1

C98 0.1

C85N.I.U.

TR1PT-10 (13:4)

123 4

6

1020

C93 0.1

Q92SC4116GR

1

23

C1250.1

R70

470

JK9AYKC21-3117

2

1

R79

N.I.U

C109 0.1

C83 0.1

C101 0.1

RA14CRN34103J

1 82 73 64 5

C105 0.1

C96 0.1

C102 0.1

C840.1

C108 0.1

R72

10K

C1230.1

IC17TC7SH04F

24

53

C860.1

L15SBT-0180W

4

1

3

2

234578910

121314

1617

18

1920212324252728

32333435

36

383940414243

44

454647484950

51

5253

54

55

565758

59

60616263

64 72

73

80 85

90 93

98

101

108

109

110111112113114115

116

117

120

124

128

136

140

142143

144

LRCK

MCKRES

DIF_DATA

BCK

27

Sep. 2001

CIRCUIT DIAGRAM (MAIN 1/2)

fig.sk961-c

4M Flash

ENCODER

PANEL VR A/D

EXP/CTL 1, 2

SW DATA

LCD IF (3.3V <=> 5V) TO LCD

SW SCAN

TO CN2

on SW2 BOARD

TO CN7

on SW1 BOARD

TO CN8

on SW1 BOARD

LED DATA

RESET

TO CN11

on SW1 BOARD

SW_SCNA3

SW_SCNA3

SW_DATA7

SW_DATA7

ContrastContrastResister SelectResister SelectRead/WriteRead/WriteEnable signalEnable signalData Bit 0Data Bit 0Data Bit 1Data Bit 1Data Bit 2Data Bit 2Data Bit 3Data Bit 3Data Bit 4Data Bit 4Data Bit 5Data Bit 5Data Bit 6Data Bit 6Data Bit 7Data Bit 7

DIR "H" : A -> BDIR "L" : A <- B

M

TO CN10

on SW4 BOARD

MIDI

TO CN4

on EXP BOARD

A12

A0

A16

A5

A8

A1

A3

A8

A8

LCD6

A0

D11

D9

D14

A15

A3

LCD6

D8

A1

AD1

A11

A4

A9

A2

A2

A4

D8

D14

A13

LCD5

A6

A13

A12

D13

A9

A14

A6

A7

A10

A3

D12

A14

A10

D12

A6

A3

D9

LCD7

A4

A0

A16

D15

A11

A14

D9

D13

A1

D13

SW_DATA5

A4

CS0

D12

A9

A3

D12

D11

LCD4

D11

A2

D12

A10

LCD1LCD2LCD3

D8

D8A8

A15

D15

D11

D11

XB

D9

D13

A5

D14

D14

LCD3

A12

D14

D13

MIDI IN

A2

A13

A0

A11

A14

A1

D10

A13

A5

D15

A16

XA

A13

A4

LCD2

A7

A15

A12

A11

D10

D15

A2

D15

A7A6

D10

A8

A0

D10

A9

A6

A9

D8

LCD5

LCD0

A1

A15

A11

A12

LCD0

A16

LCD7

RD

A10

A7

D9

A7

A5

LCD4

LCD1

A5

D10

A10

LED_DATA1LED_DATA2

SW_SCAN0SW_SCAN1SW_SCAN2SW_SCAN3

LED_CLOCK

LED_CLOCK

LED_DATA3

SW_DATA0SW_DATA1

SW_DATA6SW_DATA7

LED_DATA4

AD0

SW_DATA2

SW_DATA4SW_DATA3

SW_SCAN1SW_SCAN2SW_SCAN3

SW_SCAN0

LCD7LCD6LCD5LCD4LCD3LCD2LCD1LCD0

CS4

A16A15A14

A18

A17

A18

A19

A19

A17

A19

A17

A19

A19A18

A17

A18

LCD_DIR

AD_A

CONTRAST

BATT

LCD_DIR

BATT

CONTRAST

AD_B

RESET

ENC_BENC_A

ENC_BENC_A

MUTE

AD_C

INT0

INT0

AD_AAD_BAD_C

+D 3. 3

D

D

+D 3. 3

D

D

D

D

D

D

+D 3. 3

D

D

D

D

+5D

D

D

+D 3. 3

+D 3. 3

D

D

+D 3. 3

D

+5D

+D 3. 3

D

+D 3. 3

D

+D 3. 3

+D 3. 3

D

D

+D 3. 3+D 3. 3

D

D

+5D

D

D

+D 3. 3

+D 3. 3D

+D 3. 3

D

D

D

+D 3. 3

D

D

D

D

+D 3. 3

D

D

D

D

D

+D 3. 3

D

D

+D 3. 3

D

D

+D 3. 3

+D 3. 3

+5D

+D 3. 3

+5D

+D 3. 3

D

D

D

D

+D 3. 3

D+D 3. 3

D

+D 3. 3

D

+D 3. 3

+D 3. 3

D

D

+D 3. 3

D

+D 3. 3

D

D

+D 3. 3

D

D

+D 3. 3

+D 3. 3

D

+D 3. 3

+D 3. 3

+D 3. 3

+D 3. 3

+D 3. 3

+D 3. 3

+D 3. 3

D

+D 3. 3

+D 3. 3

+D 3. 3

+D 3. 3

+D 3. 3

+5D

+D 3. 3

D

D

D

D

+5D

+5D +5D

D

+D 3. 3

+D 3. 3

D

TVCC2Testpin 1

R82

10k

R914.7k

TGND1Testpin 1

TA13 Testpin1

RA4CRN34101J1 82 73 64 5

TGND2Testpin 1

CN853015-0210

1 1

2 2

D9RB500V-40

12

C77

0.1

R7610k

D111SS352

1 2

RA2CRN34101J

1 82 73 64 5

C112 0.1

TA14 Testpin1

RA18CRN34103J

18

27

36

45

D61SS352

12

C14310/16

RA8 N.I.U

1 82 73 64 5

24

5

INO

UT

24

5

JK8YKF51-5054

1214

15

2224

25

30 40 50 60

C800.1

RA17 N.I.U

1 82 73 64 5

IC16BTC7W04F

35

CN52.54mm

11

22

TA15 Testpin1

R1041K

IC22

UPD431000AGW-A10

A162

A1531

A143

A1328

A124

A1125

A1023

A926

A827

A75

A66

A57

A48

A39

A210

A111

A012

CE230

CE122

R/W29

OE24

I/O8 21

I/O7 20

I/O6 19

I/O5 18

I/O4 17

I/O3 15

I/O2 14

I/O1 13

NC 1

VDD 32

VSS 16

R1064.7K

TD14Testpin 1

Q10N.I.U.

1

32

R944.7K

R96 N.I.U

TA16 Testpin1

TA1 Testpin1

RA13 N.I.U

1 82 73 64 5

TD13Testpin 1R10510K

R101

N.I.U.

D8

1SS352

12

TA2 Testpin1

TA17 Testpin1

R108 100

C1390.1

R67 120

TD12Testpin 1

L17N.I.U.

DA3 1SS3022 1

3

C75N.I.U.

C1270.001

C1300.01

TA18 Testpin1

C91 0.1

TA3 Testpin1

CN4

A2001WR2-3P

1 1

2 2

3 3

+

-

IC25ATC75S51F

3

14

R1001K

CN1A2541WR2-2A16NP

11 22 33 44 55 66 77 88 99 1010 1111 1212 1313 1414 1515 1616

R80 10k

TD11Testpin 1

TA4 Testpin1

R1034.7K TA19 Testpin1

D10

1SS35212

R93 N.I.U

R1114.7K

C1340.1

CN6

A2001WR2-7P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

CN7A2001WR2-8P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

R92 N.I.U

R1104.7K

TD10Testpin 1

RA12 CRN34101J

1 82 73 64 5

R1071K

L12 N.I.U

TA5 Testpin1

R69100

DA4 1SS3022 1

3

C780.1

C1420.1

R88 N.I.U

R99N.I.U

RA10 N.I.U

1 82 73 64 5

R97 N.I.U

C121 15P

TD9Testpin 1

TA6 Testpin1

RA20 N.I.U

1 82 73 64 5

R98 N.I.U

CN2A2001WR2-10P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

RA7 N.I.U

1 82 73 64 5

TD8Testpin 1

TCS0 Testpin1

C13310/16

R75 22 1/2W

IC14TC74LVXC3245FS

DIR2

A13 A24 A35 A46 A57 A68 A79 A810

GN

D11

B8 14

B7 15

B6 16

B5 17

B4 18

B3 19

B2 20

B1 21

G22

VC

CB

24V

CC

A1

GN

D13

GN

D12

NC23

TA7 Testpin1

D7N.I.U.

12

C12610/16

L16

N.I.U

L14

N.I.U

BT1CR2032/383-009

12

TRD Testpin1

IC18TC74VHCT541F

A89

A78

A67

A56

A45

A34

A23

A12

G219

G11

Y8 11

Y7 12

Y6 13

Y5 14

Y4 15

Y3 16

Y2 17

Y1 18

VC

C20

GN

D10

C79 0.1

C138

0.1

IC27TC7SH04F

2 4

53

C13

20.

1

R90 N.I.U

TA8 Testpin1

TA0 Testpin1

JK11

HTJ-064-12D

1

23

C1350.1

C1410.1

RA9 N.I.U

1 82 73 64 5

IC16CTC7W04F

62

C890.1

RA16 N.I.U

1 82 73 64 5

C11310/16

RA6CRN34101J1 82 73 64 5

C82N.I.U.

RA21 N.I.U

1 82 73 64 5

RA5CRN34104J

18

27

36

45

R10210k

R109 10

TA9 Testpin1

X1

SG-8002JC(67.7376MHz)

OE 1

GND2 OUT 3

VDD4

C870.1

TCS4 Testpin1

CN3A2001WR2-11P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

11 11

RA3CRN34104J

18

27

36

45

RA19CRN34103J

18

27

36

45

R682.2k

X2MA-406 (20MHz)

14

R77 22

L13

N.I.U

TA10 Testpin1

C111 0.1

Q11DTA143EKA

1

32

R95N.I.U

R811M(F)

TD15Testpin 1

RA15 CRN34101J

1 82 73 64 5

RA1CRN34101J

1 82 73 64 5

C114 0.1

TA11 Testpin1

R83N.I.U.

IC13PC400

1

3

4

5

6

C137N.I.U.

R84470k

C12210/16

R854.7K

TA12 Testpin1

C1280.1

C11915P

TVCC1Testpin 1

C1290.01

IC16ATC7W04F

17

IC16DTC7W04F

84

C1310.1

C1200.1

C880.1

C10410/16

C1150.1

IC21

HD6412312VF

VC

C42

P27/TIOCB5/TMO194

P14/TIOCA15

P25/TIOCB4/TMCI192

P16/TIOCA27

P26/TIOCA5/TMO093

P20/TIOCA356

P22/TIOCC3/TMRI058

P21/TIOCB357

VS

S9

TXD0/P3010 TXD1/P3111 RXD0/P3212 RXD1/P3313 IRQ4/SCK0/P3414 IRQ5/SCK1/P3515

D0/PE0 16D1/PE1 17D2/PE2 18D3/PE3 19

VS

S20

D4/PE4 21D5/PE5 22D6/PE6 23D7/PE7 24D8 25D9 26D10 27D11 28D12 29D13 30D14 31D15 32

VC

C67

A0 34A1 35A2 36A3 37A4 38A5 39A6 40A7 41

VS

S33

A8 43A9 44A10 45A11 46A12 47A13 48A14 49A15 50A16 52A17 53A18 54A19 55V

SS

51

PF2/WAIT/IRQ2 76

PF0/BREQ/IREQ0/CS4 78PF1/BACK/IRQ1/CS5 77

P23/TIOCD3/TMCI061

STBY66

RES 64

NMI65

VS

S70

EXTAL69

XTAL68

VC

C10

0

PF6/AS 72

PF5/RD 73

PF4/HWR 74

PF3/LWR/IRQ3 75

MD059 MD160 MD263

AVCC79

VREF80

P40/AN081 P41/AN182 P42/AN283 P43/AN384 P44/AN485 P45/AN586 P46/AN6/DA087 P47/AN7/DA188

AVSS89

P24/TIOCA4/TMRI191

PG1/CS3/IRQ7/CS6 96

PG2/CS2 97

PG3/CS1/CS7 98

PG4/CS0 99

PF7/PHAI 71

VS

S90

P15/TIOCB1/TCLKC6

P17/TIOCB2/TCLKD8

P13/A23/TIOCD0/TCLKB 4

P12/A22/TIOCC0/TCLKA 3

P11/A21/TIOCB0 2

P10/A20/TIOCA0 1

PG0/ADTRG/IRQ695

WDTOVF(FWE*)62

C1180.1

R86 N.I.U

R87 N.I.U

R89 N.I.U

C11610/16

IC26

LH28F400BVE-BL85

NC 9

NC 10

WE11

RP12

VPP 13

WP14

RY/BY15

NC 16

CE26

GND 27

OE28

DQ0 29

DQ8 30

DQ1 31

DQ9 32

DQ2 33

DQ10 34

DQ3 35

DQ11 36

VCC 37

DQ4 38

DQ12 39

DQ5 40

DQ13 41

DQ6 42

DQ14 43

DQ7 44

A-1/DQ1545

GND 46

BYTE47

A1717

A1648

A151

A142

A133

A124

A115

A106

A97

A88

A718

A619

A520

A421

A322

A223

A124

A025

IC29TC74HC238AF

C 3

B 2

A 1

G2B 5

G2A 4

G1 6

Y77

Y69

Y510

Y411

Y312

Y213

Y114

Y015

VC

C16

GN

D8

RA22N.I.U.

18

27

36

45

RA23N.I.U.

18273645

RA24N.I.U.

18273645

R11

7N

.I.U

.

R11

8N

.I.U

.

R119

10K

R12

010

K

R116100k

R1214.7M(F)

D15N.I.U.

13

R129N.I.U.

R13010K

R131N.I.U.

RA25N.I.U.

18

27

36

45

R132 10KR133 10KR134 10K

RA26N.I.U.

18

27

36

45

RA27N.I.U.

18

27

36

45

R135 N.I.U

R136 N.I.U

DA5 N.I.U

2 1

3

RA28 CRN34103J1 82 73 64 5

IC15M51953AFP

RS

T6

DLY 5

VCC7

GND4

NC 1

NC 2

NC 3

NC 8

C900.33/50

IC28ATC7WH32FU

1

27

R13710k

IC28BTC7WH32FU

5

63

C1400.1

IC28CTC7WH32FU

84

R73N.I.U.

R138 N.I.U.

+

-

IC25BTC75S51F

52

C1360.1

IC20RA0A-101 (TC223C080AF-101) 1

611

15 2226

29

30

31

37

65666768697071

7475

76

777879

8182838486878889919294959697

99100102103104105106107

118119121122123125126127

129130

131

132133

134135

137138

139141

ADDATA

LRCK

MCK

ADDATB

BCK

MUTEDIF_DATA

DADATB

DADATA

26

GT-6(T)

BOARD ASSY (Analog)

SEND

A-9

D

A

A A

A

+D 3. 3

+D 3. 3 +D 3. 3

JK6

HTJ-064-12i

1

24

R58100K

C4610/16

P

R551K

R391M

L9N.I.U

Q52SA1586GR

1

32 R37

10k

R3810K

D11SS352

12

C35470/6.3

C47 10/16

R59100K

R561K

Q6

RN1441-A

1

23

Q152SA1586GR

1

32

R12247k

R12347k

R12447k

MCK

BCKLRCKDADATA

ADDATA

RES

MUTE

29

Sep. 2001

CIRCUIT DIAGRAM (MAIN 2/2)

fig.block

MAIN

GUITAR IN

HEADPHONES

OUT L(MONO)

OUT R

RETURN

A

A

A

A

DD

A+9

A-9

D

D

D

AA

A

D

D

A

A

A

A

A

A

A

A

A

A

A

A

D

A

A-9

A

A

D

D

A

DDD

+D 3. 3

D

A

A+9

A+9

A-9

A+9

A-9

A A

A

A

A

A+9

A-9A

A

A+9

A-9

A

A

A

A

A

A

A+9

A-9

D

D

+5D

A

A

A

A

D

D

A D

A D

A D

+

A

+

A

D

+

+

D

+

D

D

A

C1110/16

+

-

IC5AM5216F

2

31

+

-

IC6CM5218AFP

84

DA1N.I.U.

2 13

R321k

+

-

IC1CM5238FP

84

+

-

IC7B NJM2100M

6

57

C21

100/16

R34

100k

R3010K

C16 10P

R221k

C30

10/16

JK2HTJ-064-12D

1

23

R1147/2W

R24

10K

+

-

IC5BM5216F

6

57

R1447/2W

R63 3k(F-rank)

C2N.I.U.

C31

100/16

C62150p

R331k

L7N.I.U

C66100/16

L4N.I.U

C23150P

R661.8k

R35

10K

+

-

IC4BM5218AFP

6

57

R42 18k

C4110P

C72100/16

R25330

C240.001

C3910/16

R2682K

VR1BRK09K12A0 (10kAx2)

1020

IC3AK4552VT

DEM0 6

SDTO 8LIN2

RIN1

VD5

DEM1 7

SDTI 9

VCOM 14

LOUT15

PDN 13

LRCK 10

MCLK 11

ROUT16

BCLK 12

VA4

VSS3

R2710K

Q3RN1441-A

1

23

+

-

IC6AM5218AFP

2

31

C2510P

JK7

HEC0740-010010

213

C33150P

C57N.I.U.

R28 47K

C29

10/16

R36330

R641.8k(F-rank)

R1910K

Q142SB1132

1

2 3

C26

10/16

C37N.I.U.

R4810K

FL1DSS9ND31H223Q91J

JK3

HTJ-064-12i

1

24

C61470/6.3

R29N.I.U

C360.01

R5210K

FL2DSS9ND31H223Q91J

C67100/35

R40 1.2k

C440.1

R651.5k

JK1

HTJ-064-12i

1

24

C55ERZVA7V330

C70100/35

R41 10k

C4547/16

R1210K

R46

220k

SW1ASDKLA1-B

1 2

R5410

R1310K

C68100/16

L5N.I.U

+

-

IC6B

M5218AF

6

57

C69100/16

D4

1N4004

1 2

R4510K

R51 33k

C10.01

D5

1N4004

12

DA2

N.I.U.

2 1

3

R910

R6047k

R11.2K

C140.1

Q122SA1241-Y1

23

C65470/35

C70.1

R2 10K

C1347/16

C22N.I.U.

C71470/35

C90.1

C1010/16

Q4RN1441-A

1

23

R5 100K(F)

C34

10/16

JK4

HTJ-064-12i

1

24

L11470uH(TSL1112SRA-471KR72)

C3 10P

C810/16

C27

10/16

+

-

IC2ANJM2100M2

31

R17 47K

R4 12K(F)

R620.68 (1/2W)

C17

10/16

R1610K

C150.001

L6N.I.U

JK5

HTJ-064-12i

1

24

+

-

IC4CM5218AFP

84

R7

1M

R2047K

C74100/35

C18

10/16

+

- IC2CNJM2100M

84

C64100/35

C580.1

R8 12K(F)

R610K

C590.1

R10 6.8K(F)

C50.1(P)

R6110k

C6 10P

R3 18k

+

-

IC2BNJM2100M6

57

C40

10/16

C5210/16

IC9NJM2374AM

SI7

V+6

ES 2

IN+ 5

CS

1C

T3

CD

8G

ND

4

+

-

IC7CNJM2100M

84

L1N.I.U

R44 100K(F)

R1144.7k

C38 10P

C4910/16

R53 6.8k(F)

VR1ARK09K12A0 (10kAx2)

23

13

2212

1

R43 12K(F)

+

-

IC7A NJM2100M

2

31

IC8AK4552VT

DEM0 6

SDTO 8LIN2

RIN1

VD5

DEM1 7

SDTI 9

VCOM 14

LOUT15

PDN 13

LRCK 10

MCLK 11

ROUT16

BCLK 12

VA4

VSS3C480.1

IC10BA17805FP

IN1 OUT 3

CO

M2

+

-

IC4AM5218AFP

2

31

D3SS14 1

2

D12

1N4004

1 2

C530.1

C19

10/16

C430.001

L2N.I.U

C144220/35

R3147K

C500.1

R4710k

L8 N.I.U

C28

10/16

C5110/16

R1154.7k

R49 47k

+

-

IC1BM5238FP

6

57

L10 N.I.U.

C32N.I.U.

C540.001

+

-

IC1AM5238FP

2

31

C42 10P

C410/16

R211k

R57 33k

R50 12K(F)

Q72SD1758

1

32

R23100k

L3N.I.U

Q82SB1182

1

2 3

D2

1N4004

1 2

R1582K

D13RD10ESAB2

12

Q132SD1664

1

32

C562200/35

C20

10/16

+

-

IC5CM5216F

84

R1122.2k

Q1RN1441-A

1

23

D14RD10ESAB2

12

Q2RN1441-A

1

23

R1131k

C120.1

R18N.I.U

C1470.1

C1480.1

C1490.1

C145 10p

C146 10p

C152

10/16

C153

10/16

C150

10/16

C151

10/16

C15410p

C157100/16

R127N.I.U.

R128N.I.U.

C158N.I.U.

C1590.1

C1600.1 C161

N.I.U.

IC31 S-81233SGY

IN2 OUT 3

CO

M1

C7647/16

C60N.I.U.

R14110 (0805size)

R13910 (0805size)

R14010 (0805size)

IC30 N.I.U.

IN2 OUT 3

CO

M1

D161SS352

12

D171SS352

12

C1630.1

C1620.1

R1421.5k

R143N.I.U.

MCK

BCKLRCKDADATB

ADDATB

RES

28

GT-6(T)


31

Sep. 2001

CIRCUIT BOARD (SW SHEET)

fig.block


30

Sep. 2001 GT-6(T)

CIRCUIT DIAGRAM (SW SHEET)fig.circuit-md

SW1 BOARD ASSY (1/6)


TO CN2 ONMAIN BOARD

RIBON CABLE (3P)

EXP BOARD ASSY (6/6)

D+3V

DGND

ENC BOARD ASSY (5/6)


RIBON CABLE (7P)

DGNDSW_DATA6SW_DATA6

SW_DATA7SW_DATA7

SW_SCAN0SW_SCAN0SW_SCAN1SW_SCAN1SW_SCAN2SW_SCAN2SW_SCAN3SW_SCAN3

SW_DATA7SW_DATA7

SW_SCAN1SW_SCAN1

SW_SCAN2SW_SCAN2


TO CN8 ON MAIN BOARD




DELAYLEVEL

REVERBLEVEL

DELAYFEEDBACK

CHORUSLEVEL

PRE/SPLEVEL

PRE/SPSPEAKER

PATCHLEVEL

OD/DSDRIVE

OD/DSTYPE

OD/DSLEVEL

PRE/SPTYPE

PRE/SPTREBLE

PRE/SPGAIN

PRE/SPBASS

PRE/SPMIDDLE

A

B

C

GF

E

D DP

MANUALNAME/FV/CHAIN/NS UTILITY EQ SFX-1 SFX-2 CHORUS REVERB

DELAYTAP DELAY PRE/SP OD/DS

WAH EZ TONE TUNER/BYPASS

PEDALASSIGN

OUTPUTSELECT

PRE/SPTYPE VARIATION

OD/DSTYPE VARIATION

(RED)(GREEN) (RED)(GREEN)

BANKDOWN

BANKUP

EXP PEDAL FXON/OFF

BANK DOWN BANK UP

"CTL""4""3""2""1"

"CTL""4""3""2""1"

LED_DATA3

LED_DATA4

LED_DATA2

LED_DATA1

OD/DS

OD/DSTYPE VARIATION

PRE/SP

PRE/SPTYPE VARIATION

SCAN3

SCAN2

SCAN1

DATA0

DATA1

DATA2

DATA3

DATA4

DATA5

DELAY WAHPARAMETER[<](LEFT)

PARAMETER[>](RIGHT)

EZTONE

REVERB EQ EXIT WRITETUNER/BYPASS

DELAYTAP SFX-1

PEDALASSIGN

OUTPUTSELECT MANUAL

CHORUS SFX-2NAME/FV/CHAIN/NS UTILITY


[6detents] [11detents]

[6detents]

EXP PEDAL FXON/OFF

AD_A

AD0AD1

SW

_DA

TA

4

SW

_DA

TA

3

SW

_DA

TA

2

SW

_DA

TA

1

SW

_DA

TA

0

SW_SCAN3SW_SCAN2

SW_SCAN0SW_SCAN1

AD_BAD_C

SW

_DA

TA

5

SW_SCAN3

SW_SCAN2

SW_SCAN1

SW_SCAN0

SW_DATA4SW_DATA3SW_DATA2SW_DATA1SW_DATA0

SW_DATA5

D

D

+D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3

+D 3. 3

D

+D 3. 3

+D 3. 3

+D 3. 3

D

+D 3. 3+D 3. 3

+D 3. 3

D

+D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3

+D 3. 3

D

+D 3. 3

D

D

D

+D 3. 3

D

+D 3. 3+D 3. 3+D 3. 3 +D 3. 3 +D 3. 3

D

+D 3. 3+D 3. 3

D

+D 3. 3+D 3. 3

D

+D 3. 3

D D

D D D D D D D D

+D 3. 3

D

D

+D 3. 3 +D 3. 3FER +3. 3

FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3

+D 3. 3

D

DD

FER +3. 3 FER +3. 3

D

FER +3. 3

D

FER +3. 3

D

FER +3. 3

D

FER +3. 3 FER +3. 3

D

D14

1SS133

1 2

SW16

SKQKAB

1 2D16

1SS133

1 2

R31 470

SW17

SKQKAB

1 2

IC3BU2090 (DIP)

VD

D16

CLOCK3

DATA2

Q11 15

Q10 14

Q9 13

Q8 12

Q7 11

Q6 10

VS

S1

Q5 9

Q4 8

Q3 7

Q2 6

Q1 5

Q0 4

A B

ENEN1AEVE GC1 F20 24B

1 2 3

R14390

IC2BU2090 (DIP)

VD

D16

CLOCK3

DATA2

Q11 15

Q10 14

Q9 13

Q8 12

Q7 11

Q6 10

VS

S1

Q5 9

Q4 8

Q3 7

Q2 6

Q1 5

Q0 4

R1

390

D17

1SS133

1 2

R6

390

LED14L-312LRD

12

SW18

SKQKAB

1 2

LED6

L-34HDSL

12

CN5RIBON 3P (1/2)

11

22

33

D18

1SS133

1 2

LED7

L-34HDSL

12

Q3RN2207

3

21

CN6RIBON 3P (1/2)

11

22

33

SW19

SKQKAB

1 2

R7

390

Q4RN2207

3

21

SW6

SKQKAH

1 2

D19

1SS133

1 2

LED8

L-34HDSL

12

SW3

SKQKAH

1 2

LED29 A-552SR BW

A1

16

B1

15

C1

3

D1

2

E1

1

F1

18

G1

17

DP

14

DP

9

A2

11

B2

10

C2

8

D2

6

E2

5

F2

12

G2

7

DIG2 13DIG114

R24390

D6

1SS133

1 2

SW20

SKQKAB

1 2

R8

390

SW7

SKQKAH

1 2

SW21

SKQKAB

1 2R23120

CN2WIRING 10P

11

22

33

44

55

66

77

88

99

1010

VR6RD901-40-125F-B54-00D

1

2

3

D7

1SS133

1 2

D21

1SS133

1 2

VR7RD901-40-125F-B54-00D

1

2

3

R15390

SW27

SKQKAB

1 2

R32 470

VR8RD901-40-125F-B54-00D

1

2

3

LED15L-312LRD

12

D27

1SS133

1 2

R33 470

VR9RD901-40-125F-B54-00D

1

2

3

SW22

SKQKAB

1 2

R34 470

D22

1SS133

1 2

R35 470

LED9L-312LRD

12

SW28

SKQKAB

1 2

R36 470

LED21L-312LRD

12

R9390

VR2RD901-40-125F-B54-00D

1

2

3

D28

1SS133

1 2

R37 470

R25390

VR3RD901-40-125F-B54-06D

1

2

3

C10.1

SW23

SKQKAB

1 2

C50.1

R38 470

LED22L-312LRD

12

VR4RD901-40-125F-B54-00D

1

2

3

D23

1SS133

1 2

R39 470

CN10WIRING 2P

1 1

2 2

R26390

VR5RD901-40-125F-B54-11D

1

2

3

IC6BU2090 (DIP)

VD

D16

CLOCK3

DATA2

Q11 11

Q10 10

Q9 9

Q8 6

Q7 7

Q6 5

VS

S1

Q5 4

Q4 14

Q3 13

Q2 12

Q1 8

Q0 15

SW29

SKQKAB

1 2

R40 470

R27390

R16390

D29

1SS133

1 2

R41 470

LED23L-312LRD

12

LED16L-312LRD

12

SW24

SKQKAB

1 2

R42 470

LED25L-312LRD

12

D24

1SS133

1 2

R43 470

R28390

CN1RIBON 7P (1/2)

11

22

33

44

55

66

77

SW30

SKQKAB

1 2

R44 470

CN3RIBON 7P (1/2)

1 1

2 2

3 3

4 4

5 5

6 6

7 7

D30

1SS133

1 2

CN11WIRING 8P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

R29390

SW25

SKQKAB

1 2

SW8

CARBON SW

1 2

LED24L-312LRD

12

A B

EN

EN1BEVE GC1 F20 24B

10 20

D25

1SS133

1 2

R10390

SW31

SKQKAB

1 2

LED10L-312LRD

12

D31

1SS133

1 2

SW26

SKQKAB

1 2D26

1SS133

1 2

LED2

L-34HDSL

12

SW9

SKQKAB

1 2

R17390

R2

390

LED27L-3WSRSGW-CC

12

3

D9

1SS133

1 2

LED17L-312LRD

12

R11390

Q1RN2207

3

21

D10

1SS133

1 2

LED18L-312LRD

12

LED11L-312LRD

12

Q2RN2207

3

21

SW10

SKQKAB

1 2

R18390

R22390

SW11

SKQKAB

1 2

LED19L-312LRD

12

R21120

LED3

L-34HDSL

12

D11

1SS133

1 2

R19390

R3

390

D12

1SS133

1 2

LED20L-312LRD

12

SW12

SKQKAB

1 2

R20390

R12390

D13

1SS133

1 2

CN8

WIRING 7P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

LED12L-312LRD

12

SW13

SKQKAB

1 2

SW1

SKQKAH

1 2

LED4

L-34HDSL

12

D1

1SS133

1 2

R4

390

SW2

SKQKAH

1 2

SW14

SKQKAB

1 2

D2

1SS133

1 2

IC4TC74HC4051AP

7 4

6 2

5 5

4 1

3 12

2 15

1 14

0 13

VEE7

COM3

C 9

B 10

A 11

INH 6

VCC16

GND8

D3

1SS133

1 2

C20.1

R13390

SW4

SKQKAH

1 2

CN7

WIRING 11P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

11 11

LED28L-3WSRSGW-CC

12

3

LED13L-312LRD

12

D4

1SS133

1 2SW5

SKQKAH

1 2

LED5

L-34HDSL

12

SW15

SKQKAB

1 2

D5

1SS133

1 2

R5

390

IC1BU2090F (SOP)

VD

D16

CLOCK3

DATA2

Q11 15

Q10 14

Q9 13

Q8 12

Q7 11

Q6 10

VS

S1

Q5 9

Q4 8

Q3 7

Q2 6

Q1 5

Q0 4

D20

1SS133

1 2D15

1SS133

1 2

LED1

L-34HDSL

12

IC5TC74HC4051AP

7 4

6 2

5 5

4 1

3 12

2 15

1 14

0 13

VEE7

COM3

C 9

B 10

A 11

INH 6

VCC16

GND8

C30.1

C40.1

VR14RD901-40-125F-B54-06D

1

2

3

VR16RD901-40-125F-B54-00D

1

2

3

VR10RD901-40-125F-B54-00D

1

2

3

VR13RD901-40-125F-B54-00D

1

2

3

VR12RD901-40-125F-B54-00D

1

2

3

VR15RD901-40-125F-B54-00D

1

2

3

VR11RD901-40-125F-B54-00D

1

2

3

VR1ARK11K1140 (10KSB)

11

12

13

14

CN4WIRING 3P

1 1

2 2

3 3

SW SHEET ASSY

3332

34

Sep. 2001

ERROR MESSAGE

Normal Error Message

fig.EM-1

The memory backup battery inside the GT-6 has run down. (This message will appear when the power is turned on.)

Replace the battery as soon as possible. For battery replacement, please contact a nearby Roland service center or your dealer.

fig.EM-2

There is a problem with the MIDI cable connection.

Check to make sure the cable has not been pulled out or is not shorted.

fig.EM-3

You’ve attempted to switch patches by rotating the [PATCH/VALUE] dial, but the Dial function (p. **) is set to “VALUE Only.”

If you want to be able to switch patches using the [PATCH/VALUE] dial, set the Dial function to “PATCH No.& VALUE.”

fig.EM-4

More MIDI messages were received in a short time than could be processed correctly.

Error messages in test mode

DSP check

fig.EM-1

Problem : The data written in the DSP (IC8) PROM and the data read do not match.

* Check the following parts and wiring.

DSP(IC20): pins 77-79, 81-84, 86-89, 91-92, 94-97, 99-100, 102-107

fig.EM-2

Problem : The data written to the DRAM (IC24) via the DSP (IC20) and the data read do not match.


DSP(IC20): pins 7-10, 12-14, 16, 17, 19-21, 23-25, 27, 32-35

DRAM(IC24): pins 1-44

BATTERY check

fig.EM-3

“LOW” is displayed when 2.7 V or lower.

fig.EM-4

“No Battery !!” is displayed when a battery is not inserted.

* Insert a new lithium battery.

If an error message continues to appear when a new lithium battery is inserted, check the following parts and wiring.

CPU(IC21):pin 84

OP.Amp(IC25):pins 1-5

Resistor(R80, R81, R82, R121)

Diode(D9, D10)

Capacitor(C118, C136)

MIDI Check

fig.EM-5

Problem : No MIDI cables are connected.

fig.EM-6

Problem : The data sent (MIDI OUT) and the data received (MIDI IN) do not match.


• MIDI IN

CPU(IC21):pin 12

Resister(R67-R69)

Capacitor(C80)

Photo Coupler(IC13)

Diode(D6)

• MIDI OUT

CPU(IC21):pins 10

Resister(R76,R77,R138)

Gate IC(IC16)

DSP Pitch interruption signal check

fig.EM-7

Problem : The interruption signal generated from DSP (IC8) internal oscillation is not recognized.


CPU(IC21):pin 8

DSP(IC20):pin 75

service notes(a4)_e

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