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GB 36
5.
DVD612 /XX1
VIDEO PART OF AUDIO/VIDEO BOARD 3139 243 30241
START
NO PICTURE
CVBS , Y/C , YUV
DIAGNOSTIC SOFTWARE
" PLAYER SCRIPT "
POWER SUPPLY
±5V AND 3V3
YES
VIDEO INPUT AT
CONN 1001 &
YES
CVBS OUTPUT
AT CONN 1005A
YES
RGB OUTPUT AT
SCART CONN
YES
VIDEO PART
END
Diagnostic software descriptions and troubleshooting
ACTIVATE
NO
CHECK
?
NO
CHECK
1010 ?
NO
CHECK
& 1002 ?
NO
CHECK
1002 ?
OK
www.rtv-horvat-dj.hr
To activate the "Player Script ",press Open/Close and
Stop keys on the local keyboard of the DVD player
simultaneously.
Proceed to the nuclei "VideoColDencOn" by pressing
NEXT key until display shows "APP PIC-1".
Check supply voltages at connector 1010
Pin 9
-> -5Vstdby.
Pin 10/11 -> +5V.
Check 3V3 regulator 7203 and safety resistor 3209 ,
3237.
Check the delay cct 7512 , 3238 , 3239 , 2237.
Check the Flex cable to connector 1010.
Check Mono Board.
Check video signal at TP1 B_Vid , TP2 G_Vid.
TP3 R_Vid , TP4 CVBS , TP5 C , TP6 Y.
Check the Flex cable to connector 1001 & 1010.
Check Mono Board.
Check CVBS signal at testpoint 14.
Check for ± 5V supply to Video buffer amplifier.
Check for malfunction of Video buffer amplifier 7508,
7509 , 7510 , 7511 and the biasing components.
Check RGB signal at PIN 15, 11, 7 respectively.
Check for ± 5V supply to Video buffer amplifier.
Check for malfunction of Video buffer amplifier 7413,
7414.
7415, 7416, 7417, 7418, 7420, 7421, 7422 and the
biasing components.
CL 16532007_022.eps
080201
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