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1.2 No Power u-com Failure – XR-83A80*
Check P_ON_HL
CL415 or
P-on u-com #pin18
(IC401) is >3.0V?
no
yes
yes
Check P_ON_#2
CL417 or
P-on u-com #pin13
(IC401) is >3.0V?
no
Check ORESETB
CL416 or P-on u-com
#pin14 (IC401)
Is the voltage >3.0V?
no
yes
Change IC401
Change IC401
Change IC401
Previous page
Check X_BL_MUTE
CL412 or R459 Voltage.
Is the voltage >3.0V?
no
yes
Check “X_BE_RST” (from SOC Muffin).
*If X_BE_RST is >3.0, SOC BE(IC5000) problem.
Otherwise, SOC Muffin 5 (IC1000) problem.
END
u-com IC401 is working OK
Check BL_ON
CL420 or R471 Voltage.
Is the voltage >3.0V?
Change IC401
no
yes
TROUBLESHOOTING
SYSSET
2023/11/2806:39:49(GMT+09:00)
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