Sony KD-55X95 G Series Service Manual page 28

2019/01/15 23:07:08 (GMT+09:00)
1.3 No Power DDCON/LDO
BM3J19 Board Model
Board Operation
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
BM3J19 DC/DC
IC Ref Voltage supply
IC401 1.8V_TU_P
IC402 5V_MAIN/5V_AUDIO
IC403 3.3V_MAIN/3.3V_AUDIO
IC405 1.8V_TU
IC601 1.2V_M3_DDR
IC604 1.05V_M3_A
IC608 1.0V_M3_CORE
IC609 1.0V_M3_CPU
IC610 1.0V_M3_GPU
IC6601 1.5V_BE_DDR
IC6602 0.9V_BE
IC6604 0.8V_BE
Please refer page-25-28 for Ref number.
START
Check fuse
no
F4xx / F6xx/F8xx/F66xx
Is fuse OK?
yes
1) Check POWER_ON
Check Vcc voltage
no
C4xx / C6xx/C8xx/C66xx (Refer 1.2 No Power U-Com Failure)
Is voltage >12.0V?
2) Check G* board
yes
Check Enable pin
no
voltage
Is voltage >2.5V?
yes
Change DDCON IC
Change Fuse
P-on u-com #pin10
1.2 No Power U-Com Failure
or
Enable source
28
SYS SET