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ME-33 May. 2001
2
Jacks
INPUT Jack
AUX IN Jack (Stereo Mini Type)
OUTPUT Jacks L (MONO) / R
PHONES Jack (Stereo Mini Type)
AC Adaptor Jack
Power Supply
DC 9 V: Dry batteries (R6/LR6 (AA) type) x 6, AC Adaptor
(PSAseries: Optional)
Current Draw
160 mA
* Expected battery life under continuous use:
Carbon: 3.5 hours
Alkaline: 12 hours
These figures will vary depending on the actual conditions
of use.
Dimensions
397.5 (W) x 212 (D) x 67 (H) mm
15-11/16 (W) x 8-3/8 (D) x 2-11/16 (H) inches
Weight
1.8 kg / 4 lbs (including batteries)
Accessories
Owner's Manual (#SE000160)
Dry Batteries Alkaline: LR6 (AA) type x6 (#********)
Roland Service (information Sheet)
Options
AC Adaptor (PSA series)
* 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.
* AF Method (Adaptive Focus method)
This is a proprietary method from Roland that vastly
improves the signal-to-noise (S/N) ratio of the A/D and D/A
converters.
A U X IN
L(M O N O )/R
A C
D C 9 V 3 x6ACBO SS PSA -100
160 m A
3.5
12
397.5x 212x 67m m
1.8 kg
#SE000159
3 x 6#********
(#40016489)
A C BO SS PSA -100
0 dBu = 0.775 V rm s
A F A daptive Focus m ethod
A D D A S/N
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ME-33
LOCATION OF CONTROLS[Parts]
No. Part Code Part Name Description Q'ty1 01238178 7SEG. LED LN514RA 1
2 SE000174 LCD #U00056462500 1
SE000208 KAKUSAN-SHEET #U00056350100 1
SE000202 BACKLIGHT PLATE #U00056333200 1SE000203 LCD CONNECTOR #U00056338700 2
SE000290 WHITE-SHEET #U00056352300 1
3 SE000170 VR KNOB #U00056330800 6
SE000185 POT.RV110T-40E1-125A-B54 #U00056458100 6
17048630 VR ACCESSORY NUT M9 6
17048631 VR ACCESSORY WASHER M9 6
4 SE000171 RUBBER SWITCH #U00056335400 1
5 SE000172 TACT SWITCH SKQKAKD010 #U00053696200 5
22180605 SWITCH PEDAL 5
6 SE000077 RUBBER PLATE #U00056336500 1
7 SE000162 VR PEDAL #U00056321800 1
8 SE000161 TOP CASE #U00056320700 1
9 22360712 CORD HOOK 1
10 13449717 ADAPTOR JACK HEC2392-01-150 1
11 SE000096 SWITCH HSW-2022-010010 #MA25000830 1
12 13449440 JACK HSJ0857-01-210 2
13 SE000173 PHONE JACK HTJ-064-121 #U00056460300 3
14 SE000165 PANEL #U00056340000 1
1
14
2 3 4 6
7
5
13 11 9
12 10
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EXPLODED VIEW
[Parts]
No. Part Code Part Name Description Q'ty1 SE000161 TOP CASE #U00056320700 1
2 SE000162 VR PEDAL #U00056321800 1
3 SE000163 BATTERY CASE B #U00056322000 1
4 SE000164 BATTERY COVER #U00029512100 1
7 22180605 SWITCH PEDAL 5
8 SE000202 BACKLIGHT PLATE #U00056333200 1
9 22360712 CORD HOOK 236-712 1
10 SE000171 RUBBER SWITCH #U00056335400 1
11 SE000169 RUBBER PLATE #U00056336500 1
12 22350313 FOOT MKS 235-313 5
13 SE000077 VR PEDAL CUSHION FRONT #U00029566100 1
14 SE000078 VR PEDAL CUSHION REAR #U00029567200 1
15 SE000203 LCD CONNECTOR #U00056338700 2
16 22350171 RUBBER FOOT 235-171 5
17 SE000174 LCD #U00056462500 1
18 SE000166 REAR PANEL #U00056341100 1
19 SE000167 BOTTOM COVER #U00056342200 1
20 SE000168 PEDAL HOLDER #U00056343300 5
22 SE000204 BATTERY TERMINAL +/- #U00056344400 2
23 SE000205 BATTERY TERMINAL + #U00056345500 1
24 SE000089 BATTERY TERMINAL C #MA34002570 1
25 22170103 SUPPORT SPRING (FOR SWITCH PEDAL) 5
28 SE000208 KAKUSAN-SHEET #U00056350100 1
29 SE000209 WHITE-SHEET #U00056352300 1
30 SE000127 VR PEDAL REFLECT SEAL #U00052149300 1
[Screws]
No. Part Cord Part Name Description Q'tya 40011278 SCREW 3x8 BINDING TAPTITE P FE ZC 17
b 40011323 SCREW 3x10 BINDING TAPTITE P FE BZC 12
c 40127689 SCREW 3x10 BINDING TAPTITE S FE BZC 1
d 40016590 NYLON RIVET NRP-345 BLACK 1
e SE000196 HEXAGON SOCKET BOLT M6x60 BZC #U00056406300 1
f 40016001 LOCK NUT M6 U BZC 1
g 40016067 PLAIN WASHER 6x13x1 BZC 1
h 40348223 SPRING WASER M6 NO2 SWRH BZC 2
i 40123545 JACK NUT M9x11x2 HLJ0999-01-240 3
j SE000156 INTERNAL TOOTH WASHER M9.1x13 Ni 3
k 40016445 MINI JK NUT HSJ0999-01-190 2
l 40016456 MINI JK WASHER HSJ0999-01-210 2
30
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e
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11
f
14
1316
25
7
1
h
a
27
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3. SW/VR check
Depressing any button following the 7-segment LED display
pattern causes the switch name to appear on the LCD screen.
Depress the button following the display and check that the
display on the LCD screen changes accordingly.
Upon completion of checking all buttons, the VR names will
appear on the LCD screen.
While "0" is displayed on the 7-segment screen, operate each
VR to the left.
While "1" is displayed, operate each one to the right.
Upon completion of check, moving to the next VR takes place
automatically.
When the last VR has been operated and the check is
successfully concluded, moving to the next step takes place
automatically.
If something is found to be wrong during this process, you
cannot go to the next SW/VR check or step.
4. DSP check
The following check will be made automatically.
4-1. Initialization test
When the result is 'NG', "ERROR 1" will appear on the LCD
screen and you will not be able to go to the next step.
If the result is 'OK', go to the next step without displaying
anything.
4-2. Internal RAM read/write test
When the result is 'NG', "ERROR 2" will appear on the LCD
screen and you will not be able to go to the next step.
If the result is 'OK', go to the next step without displaying
anything.
4-3. External RAM read/write test
When the result is 'NG', "ERROR 3" will appear on the LCD
screen and you will not be able to go to the next step.
If the result is 'OK', go to the next step without displaying
anything.
3. SW /VR
7SEG , LE D
LC D
LC D
LC D VR
7SE G "0" 1
VR
V R
V R
SW /V R
4. D SP
4-1.
'N G ' LC D "ER R O R 1"
'O K '
4-2. RA M
'N G ' LC D "ER R O R 2"
'O K '
4-3. RA M
'N G ' LC D "ER R O R 3"
'O K '
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9. Check of AUX circuit operation.
"TEST 5" will appear on the LCD screen.
Enter a 200 Hz (200 mVp-p) rectangular wave in AUX IN (both
L and R).
Three different waveforms are output at 0.5-second intervals
(Automatic loop).
Check the output waveform of OUTPUT L/R using an
oscilloscope.
Check Lch (MONO) and Rch on individually.
Return to the previous check using the [EFFECT L] button.
Go to the next check using the [EFFECT R] button.
10. Residual noise check
"TEST 6" will appear on the LCD screen.
Switch the noise meter to 'JIS-A' or 'IHF' mode.
Check the output of OUTPUT L/R without connecting INPUT
and AUX IN (short circuited input, the state of short-circuited
signal and GND lines) using a noise meter.
OUTPUT L and R at or below -84.0 dBu (JIS-A) or at or below-
84.0 dBu (IHF)
Check Lch (MONO) and Rch on individually.
Set the level difference between Lch and Rch to +1 dBu or -1
dBu.
Return to the previous check using the [EFFECT L] button.
Go to the next check using the [EFFECT R] button.
11. High gain residual noise and shock noise check
"TEST 7" will appear on the LCD screen.
Check the output of OUTPUT L/R using a noise meter.
OUTPUT L and R at or below -39.0 dBu (JIS-A) or at or below
-39.0 dBu (IHF).
Remove the noise meter, connect a high gain amplifier to
OUTPUT L and R, and check for abnormal noise through a
speaker.
Apply shock to the main unit and check for shock noise.
Check Lch (MONO) and Rch on individually.
Return to the previous check using the [EFFECT L] button.
Go to the next check using the [EFFECT R] button.
9. A UX
LC D "TE ST 5"
A U X INL, R 200 H z (200 m V p-p)
0.5 3
O U TP U T L/R
Lch (M O N O ), R ch
[EFFEC T L]
[EFFEC T R ]
10.
LC D "TE ST 6"
'JIS-A ' 'IH F'
IN PU T, AU X IN G N D OU TPU T L/R
O U TP U T L, R -84.0 dB u (JIS-A ) -84.0 dB u (IH F)
Lch (M O N O ), R ch
Lch, R ch '+1 dB u or -1 dB u'
[EF FE C T L]
[EFFEC T R ]
11.LC D "TE ST 7"
O U TP U T L/R
O U TP U T L /R -39.0 dB uJIS-A-39.0 dB u
IH F
O U TPU T
L, R
Lch (M O N O ), R ch
[EFFEC T L]
[EFFEC T R ]
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BLOCK DIAGRAMA
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BUFFERPRE ENPH
PRE ENPH
IC1 IC3
IC2AUX IN
IC4
MULTI
AMP
PLEXER
(MONO)
(STEREO)
AD/DAIC7
LPFDE ENPHIC9 IC8
OUTPUT(STEREO)AMP
PHONES
MUTE
DSP
DRAM
EEPROM
H8/3847R
IC14
ESP4
IC15
IC17,18
IC16
BUSCPU
PHOTOINTERRUPTOR
AMP
VR x 6SWITCHLCD
LED DRIVERIC11
7SEG LED &LED
RESETIC13
POWER
DC-DC CNV
GUITAR INMAIN BOARD
PEDAL BOARD
BATTERY
ADAPTOR IN
AMP
POWER SW
A
D
+D 3
+8VA +4VIN +4VOUT+A 9
-
-
-
-
... .
..
.
.
.
.
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CIRCUIT BOARD (MAIN BOARD) 1/2A
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CIRCUIT BOARD (MAIN BOARD) 2/2/ (MAIN BOARD)
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CIRCUIT DIAGRAM (MAIN BOARD) 2/2
ANALOG CIRCUIT DIAGRAM
GUITAR IN
AUX IN
OUT L
AC ADAPTOR
HEADPHONES
OUT R
-20dBm
-10dBm
-20dBm
-20dBm
S D
fc=7.2KHz
L
R
L
R
ADDA
DC-DC CNV
A
A
A
A
A A A A
A A A
+8VA
+8VA +4VIN
A
A
+8VA
+4VIN
A
A A
AA
A
A
A
A
A
A
A
A A
AA
+A 9
A
+8VA
A
+8VA
+8VA
A
A
A
+8VA
A
+8VA
D D
DD
D
D+D 3
+A 9
+8VA
D
A
A
+8VA
A
+8VA
A
+8VA
+4VIN
+4VIN
+4VIN
+4VIN
+4VIN
A A A
+ 8V A + 4V OU T
+4VOUT
+8VA
+4VIN
A
A
A
+D 3
D
D
+4VIN
+4VIN
+D 3
+4VIN
+4VOUT
D
+D 3
D
D
+4VOUT +4VOUT
A
+4VOUT+4VOUT +4VOUT
D
D
D
D
D
A D
JK6HEC2392-01-150
2
13
45
FL1DSS310-91D223S
D1SB07-03N-AA
1 2
D21SR154-400
1
2
CN1TP
11
CN2TP
11
SW19HSW2022-010010
Q22SC2235Y
3
12
C26470/16
C270.1
R19680
C24470/16
C18220/16
C190.1
R1812K
R1710K
C250.1
R110K
C10.1_FILM
L1BLM21A601SPT
R21M
Q12SK184GR
2
3
1
R310K
R6 47K
R5
10K
C2
0.0022
R447K
L2BLM21A601SPT
C522/16
C922/16
IC4
TC74HC4052AF
3Y4
2Y2
1Y5
0Y1
3X11
2X15
1X14
0X12
YCOM3
XCOM13
INH6
B9
A10
VEE7
VCC16
GND8
C590.0022
C5822/16
R39 12K
R37 12KR38 12KC64220P
R36 68KC6622/16
R40100K
R471K
R461K
L4BLM21A601SPT
C6922/16
R45100K
R491K
R481K
L5BLM21A601SPT
R5147K
R5433 1/2W
R50 4.7K
R5933 1/2W
L7BLM21A601SPT
Q52SK208Y
3
1
2
Q42SK208Y
3
1
2
D31SS301
1
2
3
R2647K
C370.1
Q6RN1307
1
2
3
R251M
Q82SA1586GR
1
3
2R62100
R6310K
D51SS352
1
2
C70
47/16
R11 18K
R10
10K
C6
0.0022
R947K
R15
10K
R16 18KR1447K
C10
0.0022
C11910/25
R13100K
C8220P
R12220
R7220
R8100K
C4220P
C12
0.1
C14
10/25
C230.1
R2447K
+
-
IC9AM5219FP
2
31
C3822/16
C3922/16
IC6S-8520E33MC-BJS
ON/OFF1
VSS2
VOUT3
EXT4
VIN5
C40100/16
C410.1
C42220/16
C430.1
L8 4.7uH L9 47uH
C330.1
C72150P
R53330
R60100K_1%
R6143K_1%
L6BLM21A601SPT
C3022/16
C2922/16
C2822/16
R21 150K_1%
R20 33K_1%
C3112P
+
-
IC3BM5219FP
6
57
R22 33K_1%
C32 12P
+
-
IC3AM5219FP
2
31
R23 10K_1%
+
-
IC10AM5216FP
2
31
+
-IC3CM5219FP
8
4
+
-IC9CM5219FP
8
4
+
-IC10CM5216FP
8
4
+
-
IC1AM5218AFP
2
31
+
-
IC2AM5219FP
2
31
+
-
IC2BM5219FP
6
57
+
-
IC1BM5218AFP
6
57
+
-
IC2CM5219FP
8
4
+
-
IC1CM5218FP
8
4
C127220/16
C1280.1
R9412K
R9310K
R100 100K
C130220P
C132220P
Q92SC4213A
1
2
3
Q102SC4213A
1
2
3
Q112SC4213A
1
2
3
Q122SC4213A
1
2
3
R1084.7K
R1094.7K
R1011K
R1021K
R891M
D4MA720
1
3
R99 100K
Q3RN1307
1
2
3
JK1HTJ-064-121
1
23
JK3HTJ-064-121
1
23
JK4HTJ-064-121
1
23
C3 22/16
C7 22/16
C2122/16
C2022/16
R95100KR96100KR147100KR146100K
JK2HSJ0857-01-1210
1
23
L3BLM21A601SPT
JK5HSJ0857-01-1210
1
23 C50
10/25
C5 1 2 2/1 6
C4710/25
C4510/25
C5 5 2 2/1 6
R29 100KR31 100K
R97 100KR98 100K
C22220/16
D171SS352
1
3
R 82 10
IC7AK4552VT
DEM06
SDTO8
LIN2
RIN1
VD5
DEM17
SDTI9
VCOM14
LOUT15
PDN13
LRCK10
MCLK11
ROUT16
BCLK12
VA4
VSS3
R3010K
C1350.0022
C620.0022
C6122/16
R44 12K
R42 12KR43 12KC67220P
R41 68K
R5647K
R55 4.7K+
-
IC9BM5219FP
6
57
C74150P
R58330
+
-
IC10BM5216FP
6
57
R3310K
C1360.0022
L11BLM21A601SPT
Q7CPH6302
3
4 1
D23 1SS352 1 2D24 1SS352 1 2D33 1SS352
12D32 1SS352
12
C490.1
C460.1
C440.1
C480.0022
L12BLM21A601SPT
BATTERY
1.5V x 61
2
R300 100
AUX
MUTE
BATT
SAMPLER
MCK
BCKLRCKDADATA
ADDATA
RES
A D
L14 BLM21A601SP
or
M5218AFP
orM5218AFP
orM5218AFP
orM5218AFP
orM5218AFP
orM5218AFP
*S/No. AO76100-Up
/ (MAIN BOARD)