AN17K*/AN17L*
5-1
5 Troubleshooting
5-1 Parts Level Troubleshooting
Notes:
Check the following circuits.
• No raster appears: Power circuit, Horizontal output circuit.
• High voltage develops but no raster appears: Video output circuits.
• High voltage does not develop: Horizontal output circuits.
5-1-1 No Power Supply
Chirping noise exists?
Check and replace IC601.
Check and replace D601 and FH1
Done.
No
Yes
Repeating start?
Check and replace D606.
No
Yes
IC601 Pin 1 waveform is right?
Check and replace Q602, IC601,
IC605 and IC602.
Yes
No
C622 Voltage is 13 V ± 0.5V?
Check and replace IC201, IC301,
IC605, IC401, Q402, Q404,
and 12V Regulafor circuit.
Yes
Yes
No
Normal operation?
Replace Main board.
Verify voltages.
No
WAVEFORMS
1
1
100 V (IC601, #1)
CH1 P-P = 100 V CH1 RMS = 350.2 V
CONFIDENTIAL
Summary of Contents for AN17KS
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 ...