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5-1-19 OSD Failure
IC103 Pin 5, 24 input is 5V?
22
Yes
Check IC103 Pin 7, 8 I
Data / Clock Line?
Yes
IC103 Pin 6 and 17
inputs are right?
Yes
IC103 Pin 20, 21 and 22
23
outputs are right?
Yes
Check and replace IC103.
Done
AP17K*/AP17J*
No
No
2
C
No
No
Check +5V Line.
2
Check I
C wavefroms.
Check H-FLB 2, V_BLK.
Check and replace IC101.
5 Troubleshooting
WAVEFORMS
1.00 V (IC103, #5, 24)
22
CH1 P-P = 1.00V
CH1 RMS = 4.516V
1.00 V (IC103, #20, 21, 22)
23
5-11
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