Product specifications

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
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