5 Troubleshooting
AN17K*/AN17L*
5-3
5-1-3 H_Deflection Failure
Does Horizontal pluse signal
appear at Pin 26 of IC401?
Check IC401.
Yes
No
Does 110 Vp-p signal appear
at Collector of Q403?
Check Q403.
Yes
No
Check Q402, Q404 and T401.
4
Does PWM output signal appear
at Pin 28 (B_DRV) of IC401?
Check IC401.
Check 12 V line.
Yes
No
Does DC 12V appear at
Pin 29 of IC401?
Yes
No
3
5-1-4 S Correction Failure
S1~S3 signals are correct at each
frequency block?
Check S1 ~ S3 signal.
Check and replace Q409, Q410,
Q411, Q414, Q415, Q416, D402,
D403, QD404.
Yes
Check and replace IC201.
No
5
3
2.00 V (IC401, #28)
CH1 P-P = 2.00V CH1 RMS = 5.868V
4
2.00V (IC401, #26)
CH1 P-P = 2.00V CH1 RMS = 5.868V
5
20.0 V (Q403, Collector)
CH1 P-P = 20.0 V CH1 RMS = 46.80V
WAVEFORMS
CONFIDENTIAL
Summary of Contents for SyncMaster 753 DFX
Page 7: ...2 Product Specifications 2 4 AN17K AN17L Memo CONFIDENTIAL...
Page 34: ...AN17K AN17L 6 1 6 Exploded View and Parts List 6 1 1 AN17KS CONFIDENTIAL...
Page 35: ...6 Exploded View Parts List 6 2 AN17K AN17L CONFIDENTIAL 6 1 2 AN17KS Front 1 2 3 4 5 9 6 8 7...
Page 36: ...6 Exploded View Parts List AN17K AN17L 6 3 CONFIDENTIAL 6 2 1 AN17KT...
Page 37: ...6 Exploded View Parts List 6 4 AN17K AN17L CONFIDENTIAL 6 2 2 AN17KT Front 2 3 1 4 5 6 8 10 9...
Page 38: ...6 Exploded View Parts List AN17K AN17L 6 5 CONFIDENTIAL 6 3 1 AN17LS...
Page 39: ...6 Exploded View Parts List 6 6 AN17K AN17L CONFIDENTIAL 6 3 2 AN17LS Front 2 3 1 4 5 7 8 10 9...
Page 40: ...6 Exploded View Parts List AN17K AN17L 6 7 CONFIDENTIAL 6 4 1 AN17LT...
Page 41: ...6 Exploded View Parts List 6 8 AN17K AN17L CONFIDENTIAL 6 4 2 AN17LT Front 2 3 1 4 6 5 8 10 9...
Page 75: ...Memo 8 Block Diagrams 8 2 AN17K AN17L CONFIDENTIAL...
Page 77: ...9 PCB Diagrams 9 2 AN17K AN17L Memo CONFIDENTIAL...