Philips DVDR520H Service Manual page 15

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3 Loader (DVD writer) Failure
3.1 Tray can't open
3.1.1 Disassemble the Loader, and press the eject button on the Loader (with
power
supply connected : 4 pin connector) to check whether the tray can open
or not. Re-assembly DVD writer (Loader), pay attention to assembly issue
(Plastic layer of Loader stuck to front) and the position of IDE cable (40 pin;
flat cable).
3.1.2 Check the FFC (18 pin) cable between main board and display board
had been assembled / connected well.
3.2 Not ready ( Loader can't identify / recognize the disc )
3.2.1 In this case update the loader firmware to latest version. Please select
several kind of DVD and CD discs including 8x and 4x DVD+R/RW, and
test if loader
can both playback and record on the disc.
1. If yes, then this maybe a media compatibilities issue. The firmware
update can solve it.
2. If can not playback or record at all, change another new loader.
3. If just can't record on some disc, wait for a new firmware release or
change another new loader.
3.3 Copy/Recording failure or Mosaic appeared
1. Check if the recorded disc is dirty or scratch. If yes, try another disc to check
again.
2. If no, update loader to latest and check it again.
3. If it still can't work, Replace/change another new loader and check it again.
4. If it still can't work, Replace/change another new Main-board and check it
again.
4 Update FirmWare
4.1 Tray can't open
4.1.1 Re-assembly DVD writer (Loader), pay attention to assembly issue ( Plastic
layer of Loader stuck to front ) and the position of IDE cable ( 40 pin; flat
cable ).
4.1.2 Check the FFC (18 pin) cable between main board and display board
had been assembled / connected well.
4.1.3 Disassemble the Loader, and press the eject key on the Loader (with
power supply connected : 4 pin connector) to check whether the tray
can open or not. If the answer is negative, Replace / change another
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