Samsung PN15VT / VO Service Manual page 22

5-1-8 Side Pin or Trap Failure
IC401 Pin 24 output exists?
7
Yes
Refer to 5-1-7 Abnormal H_Size .
5-1-9 Para. or Pin Balance Failure
IC401 Pin 24 output varies with
different DAC values?
No
Replace IC401.
5-1-10 Tilt Failure (only HT/HO)
Check tilt connector connection
IC201 Pin 20 output duty varies
with different DAC values?
Yes
IC603 Pin 3 output varies with
different DAC values?
Yes
Check and replace Q301 and Q302.
PN15VT/VO
PN15HT/HO
No
Check and replace IC401.
Yes
Refer to 5-1-7 Abnormal H_Size .
No
Check and replace IC201.
No
Check and replace IC603.
5 Troubleshooting
WAVEFORMS
7 1.00 V (IC401, #24)
5-5