Samsung SyncMaster 1000s Service Manual page 43

7-2-4 Visible Retrace
Check white balance adjustment.
Is the G2 voltage correct?
Yes
Is blank pulse present on Pin 27
34
of IC104 on Video Board?
Yes
Is blank pedestal present on
35
Pins 29, 32 and 35 of IC104?
Yes
Is G1 pulse present on
Pin 6 of CN102_B?
Yes
Is blank pedestal present
on all cathodes?
Yes
Done
SyncMaster 1000s (CGP1607L)
No
Check G2 control volume and FBT.
No
Check Q108, CN101 Pin 1, T402 Pin 8.
No
Check IC104 and related components.
No
Check Q106 and CN101 Pin 27.
Check IC107 and Pins 24, 25, 26 of IC104.
No
Check QR104, QR105, QG104, QG105,
QB104, QB105.
7 Troubleshooting
WAVEFORMS
5.56 V (IC104, H_BLK)
34
CH1 P-P = 5.56 V CH1 RMS = 1.990 V
3.60 V (IC104, #35)
35
CH1 P-P = 3.60 V CH1 RMS = 2.938 V
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