Sony XBR-65Z9D Service Manual page 25

FLOW
1-3. NO POWER DDCON/LDO
DDCON check
START
Check IC404 Vcc voltage
C454
Is voltage >12V?
yes
Check Vcc voltage
C602
Is voltage >4V?
yes
Check Enable
IC600 #pin1
Is voltage >2.5V?
yes
Change DDCON
IC601
XBR-65Z9D
Check Vcc voltage
no no
C602
Is voltage >3V?
yes
no
Check
no
D601
Is diode alive?
yes
no
Change IC600
Check
no
D600
Is diode alive ?
yes
Change D601
Check +5V_MAIN DDCON (IC404)
TROUBLE SHOOTING
Change D600
Check +3.3V_STBY.
G board or IC408 on DPA
25