5 Troubleshooting
5-14
AP17K*/AP17J*
5-2-3 Missing Color
Proper Video levels are
on CN101 (D-Sub) Pin 1, 3 and 5?
Proper Video signal is
on all cathodes?
Refer to 5-1-16 No Video.
Yes
Yes
No
Check signal generator.
No
Proper DC voltage is
on all cathodes?
Check IC101 Pin 18, 21 and 24.
Check QR01, QR02, QG01,
QG02, QB01, and QB02.
Yes
Yes
No
G2 voltage is right?
Check D502, D518, Q501,
D520, D521, and CN501.
No
Heater voltage is right?
Check D608, Q604 and T601.
No
Yes
Is G2 voltage right?
Check D504, Q502 and T501.
No
Yes
Yes
Yes
No
Replace CRT.
Done
24
WAVEFORMS
24
10.0 V (R,G,B, Video)
CH1 P-P = 10.0V
CH1 RMS = 17.02V
Summary of Contents for AP17K series
Page 7: ...2 Product Specifications 2 4 AP17K AP17J Memo ...
Page 17: ...4 Alignment and Adjustments 4 8 AP17K AP17J Memo ...
Page 36: ...AP17K AP17J 6 1 6 Exploded View and Parts List ...
Page 37: ...6 Exploded View Parts List 6 2 AP17K AP17J Memo ...
Page 55: ...Memo 7 Electrical Parts List 7 18 AP17K AP17J ...
Page 56: ...8 Block Diagrams AP17K AP17J 8 1 ...
Page 57: ...Memo 8 Block Diagrams 8 2 AP17K AP17J ...