SGH-E910 Flow Chart of Troubleshooting
2-
22
2-1-10. SERVICE LED PART
Check U301 by factory test
program
Check the TR300
pin1 and TR301 pin1
is "high"
NO
YES
Check the TR300 pin3
and TR301 pin3 is
"high"
Replace
R308, R309
NO
Replace service LED
FPCB
YES
Service LED ON?
NO
YES
END
Service LED does not work
R308
R309
VCCD
ZD301
C328
1
3
2
TR301
TR300
1
3
2
GREEN
RED
VCCD_2.9
ZD302
LED_RED
LED_GREEN
LED_RED
LED_GREEN
SVC_RED
SVC_GREEN