Chapter 5 of the Philips CDI 220 service manual (the manual that helped finding the right spots for the 60 Hz modification) deals with the built-in service software:
5 SERVICE SOFTWARE
In the set there are 3 different testsoftware available:
1. FTD-display/keyboard test
2. Low Level test
3. Service Shell
I’m going to cite the instructions for 1. and 3. and add pictures or comments if needed (I’m not going to cover 2. as it requires an extra service pcb and/or terminal).
Note: The service manual is valid for the Philips CD-i players CDI 220/20 220/25 220/39 (PAL) and CDI 220/31 220/37 (NTSC). On other players/models the test instructions should be similar if not the same.
5.1 The FTD-DISPLAY/KEYBOARD TEST
This testfeature includes following tests:
• FTD filament test
• Player keyboard test
• NVDS signal test
(The NVDS signal is to switch on/off to the FMV mode)
5.1.1 Test sequence
- To Startup this test press the 'PAUSE' buton on the front of the player while switching on the power. After approximately 5 seconds a '0' will appear on the FTD.
Now the test software is activated.
- First test, the keyboard test. Now all front keys should be pressed one by one in a proper sequence. Every time the correct key is pressed, the counter on the FTD will increment by one.
The correct sequence is:
2. PREVIOUS TRACK
4. NEXT TRACK
After this, if any key is pressed then the FTD test will startup. In this test also the remote control player-control-keys can be used.
- Second test, the FTD/NVDS test. By using any key (remote or on the front of the player) except the 'PLAY' will toggle all FTD filaments on and off. Simultaneously the NVDS signal, which is an internal signal will be toggled. This can be noticed by looking to the TV or monitor screen, the Picture on the screen will dissapear at the toggling of NVDS.
- To continue and go to the normal mode just press 'PLAY'.
Now the player shell will be startet and the player can be operated normally again.
To be continued.