29
BM3J19 Board Model
DDCONs check
Check Enable pin
voltage
Is voltage >2.5V?
1.2 No Power U-Com Failure
or
Enable source
Change Fuse
no
no
START
yes
Change DDCON IC
Check fuse
F4xx / F6xx/F8xx/F66xx
Is fuse OK?
Check Vcc voltage
C4xx / C6xx/C8xx/C66xx
Is voltage >12.0V?
no
yes
yes
Please refer page-26~29 for
Ref number.
1) Check POWER_ON
P-on u-com #pin10
(Refer 1.2 No Power U-Com Failure)
2) Check G* board
Board
Operation
IC Ref
Voltage supply
BM3J19
DC/DC
IC401
1.8V_TU_P
BM3J19
DC/DC
IC402
5V_MAIN/5V_AUDIO
BM3J19
DC/DC
IC403
3.3V_MAIN/3.3V_AUDIO
BM3J19
DC/DC
IC405
1.8V_TU
BM3J19
DC/DC
IC601
1.2V_M3_DDR
BM3J19
DC/DC
IC604
1.05V_M3_A
BM3J19
DC/DC
IC608
1.0V_M3_CORE
BM3J19
DC/DC
IC609
1.0V_M3_CPU
BM3J19
DC/DC
IC610
1.0V_M3_GPU
BM3J19
DC/DC
IC6601
1.5V_BE_DDR
BM3J19
DC/DC
IC6602
0.9V_BE
BM3J19
DC/DC
IC6604
0.8V_BE
1.3 No Power DDCON/LDO
SYS SET
2019/04/19 01:55:00 (GMT+09:00)