5 Troubleshooting
AP17K*/AP17J*
5-9
5-1-16 No Video
IC102 Pin 5, 8 and 10
inputs are right?
IC102 Pin 25, 28 and 30
outputs are right?
Check I
2
C bus and +12 V line.
Yes
Yes
No
Check the signal cable connection.
No
IC105 Pin 1, 3 and 5
outputs are right?
Check +12 V, +80 V line.
Check and replace IC105.
Yes
No
Cathode DC levels are right?
Check +80 V line.
Check and replace IC104
Check IC102 Pin 19, 20, 21
Yes
No
G2 voltage is right?
Check G2 wire,
CRT Socket board and FBT.
Change CRT.
Yes
Done.
No
Check signal cable and connection.
15
16
17
Yes
WAVEFORMS
15
1.00 V (IC102,#5, 8, 10)
16
1.00 V (IC102, #25,28,30)
17
20.0 V (IC105, #1, 3, 5)
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 ...