CONFIDENTIAL
5 Troubleshooting
CF21G*
5-13
5-2-3 Missing Color
Proper Video levels are
on CN101 Pin 1, 3 and 5.
Proper AC voltage are
on all cathodes?
Refer to 5-1-17 No Video.
Yes
Yes
No
Check signal generator and
replace BNC Board.
No
Proper DC voltage are
on all cathodes?
Check IC105 Pin 1, 3 and 5.
Check and replace IC105 and IC104.
Change the CRT.
Done.
Yes
No
G2 voltage is right?
Check D598, D599 and G2 wire.
Check around FBT circuits also.
Yes
No
Summary of Contents for CF21G Series
Page 32: ...CONFIDENTIAL CF21G 6 1 6 Exploded View and Parts List ...
Page 33: ...Memo 6 Exploded View Parts List 6 2 CF21G CONFIDENTIAL ...
Page 61: ...CONFIDENTIAL Memo 8 Block Diagrams 8 2 CF21G ...
Page 63: ...Memo 9 Wiring Diagram 9 2 CF21G CONFIDENTIAL ...
Page 65: ...CONFIDENTIAL 10 Schematic Diagrams 10 2 CF21G 1 368 V IC601 1 ...