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KLV-22T550A, KLV-32T550A - Sony TV Service Manual (repair manual). Page 10

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KLV-22, 32 T550A
RM-GA016
PICTURE NG
All input have 
  problem
BT2 Board NG
NO
YES
LVDS harness connection 
or BT2 board or Panel NG
BT2 Board or GT2, GT3 Board NG
NO
YES
Backlight  on?
UI of some picture 
setting correct?
Set correctly or reset by menu
YES
NO
SECTION 3
TROUBLESHOOTING
3.1 Flowchart
NO
Check AC cable
connection 
BT2 NG
AC cable NG
No Power
STBY_VCC
(GT2:13.2V, GT3:6.2V)
CN7000_7pin on BT2 
YES
YES
YES
GT2 or GT3 Board NG
NO
Sound NG
Only speaker out?
BT2 Board NG
UI of Audio 
setting 
correct?
Volume,TV speaker
NO
YES
Set correctly or reset by menu
BT2 Board or Speaker NG
NO
YES
AUDIO_VCC
(GT2:1, GT2:10V, GT3:13V)
CN7000_1, 2pin on
NO
YES
GT2 or GT3 Board NG
Trouble Shooting Flowchart
1. NO POWER
2. SOUND NG
3. PICTURE NG
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