Sony XR-65X95K Service Manual page 22

2022/03/30 00:15:03 (GMT+09:00)
TROUBLESHOOTING
1.2 No Power U – com Failure
BM5S22 Board LCD Model when mounted on IC420
Previous page
Check P_ON_#2
CL417 or
P-on u-com #pin17 (IC420)
is >3.0V?
yes
Check P_ON_HL
CL415 or
P-on u-com #pin10 (IC420)
is >3.0V?
yes
Check ORESETB
CL416 or
P-on u-com #pin16 (IC420)
Is the voltage >3.0V?
yes
Check X_BL_MUTE
CL412 or R459 Voltage.
Is the voltage >3.0V?
yes
SAFETY NOTES
no
Change IC420
no
Change IC420
no
Change IC420
no
Check "X_BE_RST" (from SOC Muffin).
*If X_BE_RST is >3.0, SOC BE(IC5000) problem.
Otherwise, SOC Muffin 5 (IC1000) problem.
SELF DIAGNOSIS FUNCTION
CL420 or R471 Voltage.
Is the voltage >3.0V?
u-com IC420 is working OK
TROUBLESHOOTING SERVICE ADJUSTMENT
Check BL_ON no
yes
END
DIAGRAM
Change IC420
22
HANDLING GUIDE
SYS SET