Ddcon Check - Sony KD-55A9G Service Manual
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Also See for KD-55A9G:
- Reference manual (16 pages) ,
- Setup manual (2 pages) ,
- Reference manual (32 pages)
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2019/04/19 01:55:00 (GMT+09:00)
1.3 No Power DDCON/LDO
BM3J19 Board Model
START
Check IC402 Vcc voltage
C423
Is voltage >12V?
yes
Check Vcc voltage
C603
Is voltage >4V?
yes
Check Enable
IC600 #pin1
Is voltage >2.5V?
yes
Change DDCON
IC601
DDCON check
no
Check Vcc voltage
C603
Is voltage >3V?
yes
no
Check
D601
Is diode alive?
yes
no
Change IC600
no
Check
D600
Is diode alive?
yes
no
Change D601
Check 5V_MAIN DDCON (IC402)
IC Ref
Voltage supply
IC601
1.2V_M3_DDR
no
Change D600
Check 3.3V_STBY.
G* board
28
SYS SET
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