![Page 1: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/1.jpg)
OPPO UDP 203/205 Femto installation guide
1. Take out 27 MHz clock and 3 other components C525,C526,R531
![Page 2: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/2.jpg)
2. Take out 25 MHz clock and 3 other components C957,C951,R943
![Page 3: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/3.jpg)
Use only good quality hot air gun such as Weller WHA 600. and set the temperature 385 degree.
before de-soldering work, put thick black insulation tapes around the clock to protect from heat.
![Page 4: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/4.jpg)
3. put FEMTO clock buffer board around each clock .put insulation tapes first and femto buffer board.
( for 27 Mhz installation .)
![Page 5: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/5.jpg)
Get the 3.3v source from inner side of C179 on the upper side.
![Page 6: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/6.jpg)
( for 25 Mhz installation )
![Page 7: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/7.jpg)
Get the 3.3v source from one side of C1035
4. install FEMTO MAIN board and connect and solder power cables to bottom of 8 pin power connector( +5V and ground )
![Page 8: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/8.jpg)
5. connect between buffer and main board.
I suggest to put some hot glue around buffer board and put insulation tape on the 27 Mhz buffer board for safety.
![Page 9: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/9.jpg)
In case of OPPO UHD 205.
It is better to install 100 MHz in 2 channel stereo DAC board .
Audio performance will be much improved .
take out metal case and C639.metal shield case is very thin .it is easy to remove with knife and nipper.
![Page 10: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/10.jpg)
Get the 3.3V power form one side of C 563----------------------------------------the result will be as below .
Before.You can see wave form is round and lots of jitter spectrum.
![Page 11: OPPO udp 203 · OPPO UDP 203/205 Femto installation guide 1. Take out 27 MHz clock and 3 other components C525,C526,R531 . 2. Take out 25 MHz clock and 3 other components C957,C951,R943](https://reader033.vdocuments.us/reader033/viewer/2022042922/5f6c8516e2134119c435b155/html5/thumbnails/11.jpg)
after: very clean rectangular wave and virtually no jitter