5 Troubleshooting
5-8
AP17K*/AP17J*
5-1-15 Dynamic Focus Failure
IC401 Pin 32 output is right?
Some parts around Q551 are right?
Replace failed part.
Yes
Yes
No
Replace the IC401.
No
T502 Pin 6 input is right?
Check and replace C432.
Yes
No
T502 Pin 1 output is right?
Replace the T502.
Yes
No
Check the connection between FBT
Focus pin and CRT Socket PCB.
13
14
12
12
2.00 V (IC401, #32)
CH1 P-P = 2.00V CH1 RMS = 6.124V
13
50.0 V (T502, #6)
CH1 P-P = 50.0V CH1 RMS = 75.6V
14
100 V (T502, #1)
CH1 P-P = 100V CH1 RMS = 124.0V
WAVEFORMS
Summary of Contents for AP17J 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 ...