5 Troubleshooting
CF21M*
5-17
5-2-6 Misconvergence
Try readjusting convergence.
Change CRT and
readjust convergence.
The convergence is
now within spec.?
No
Yes
Check the C/G control Assy
(CN104, CN105).
Proper voltage are appeared
on IC106 Pin 7, 8, 10, and 11
in Video Board.
Change CRT and readjust
convergence.
Done.
Check and replace IC106.
No
No
Done.
Are the C/G control circuits in the video Board?
(AQ17NS, AQ17NS, AQ19FS have the C/G control circuits in the video Board)
Yes
No
Summary of Contents for CF21M
Page 7: ...CF21M 6 1 6 Exploded View and Parts List ...
Page 17: ...10 Schematic Diagrams 10 6 CF21M 1 368 V IC601 1 ...
Page 19: ...10 Schematic Diagrams 10 8 CF21M 19 IC103 5 24 15 CRT Socket Red Green Blue 20 R G B Video ...
Page 21: ...10 Schematic Diagrams 10 10 CF21M Memo ...
Page 22: ...Memo 9 Wiring Diagram 9 2 CF21M ...
Page 23: ...Memo 8 Block Diagrams 8 2 CF21M ...
Page 48: ...Memo 7 Electrical Parts List 7 26 CF21M ...
Page 49: ...7 Electrical Parts List CF21M 7 27 Loc No Code No Description Specification Remarks ...
