Samsung CF21M Service Manual page 54

5-1-8 Abnormal H_Size
The Voltage waveforms at
7
Q402 Collector are right?
Yes
T402 pin 8 wareform is right?
8
Yes
Check some parts around
IC250 and IC402 Pin 1 and 2.
5-1-9 Side Pin or Trap Failure
IC250 Pin 24 output exists?
9
The waveform is right?
Yes
Check and replace IC402.
Check some parts IC402 Pin 2
and IC250 Pin 24.
5-1-10 Para. or Pin Balance Failure
IC250 Pin 24 output varies with
different DAC values?
No
Replace IC261.
CF21M*
No
Repeat the troubleshooting
Guide of H_deflection failure.
No
Replace T402.
No
Check and replace IC250.
5 Troubleshooting
WAVEFORMS
Q402, Collector
7
T402, #8
8
WAVEFORMS
IC250, #24
9
5-5