Samsung CF21M Service Manual page 64

5-2-4 Visible Retrace
Check white balance adjustment.
G2 voltage is right?
Yes
Blank pulse is on Pin 23 of
IC102 (19": Pin 27 of IC101)
on Video board?
Yes
Blank pedestal is on
Pin 25, 28 and 30 of IC102
(19": 29, 32 and 35 of IC101)?
Yes
Is V_FLB and DC_bias on
G1 Pin at CRT socket?
Yes
Done.
CF21M*
No
Check G2 control volume and FBT.
No
Check CN102, Q104 (19": Q103).
No
Check IC102 (19": IC101)
and related components.
No
Check Q301, CN102 Assy,
Q520, D520, and D521.
5 Troubleshooting
5-15