CONFIDENTIAL
5 Troubleshooting
5-14
CF21G*
5-2-4 Visible Retrace
G2 voltage is right?
Blank pulse is on Pin 23 of
IC102 on Video board?
Check CN102, Q104.
Yes
Yes
No
Check G2 control volume and FBT.
No
Blank pedestal is on
Pin 25, 28 and 30 of IC102?
Check IC102 and related
components.
Yes
No
Is V_FLB and DC_bias on
G1 Pin at CRT socket?
Check Q301, CN102 Assy,
Q520, D520, and D521.
Done.
Yes
No
Check white balance adjustment.
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 ...