User Guide

PAMS Technical Documentation 6 - Troubleshooting
NPL-1
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Display
Fault
Is
display
working
Change
display
module
Is
display
working
Measure
Vflash1 is
2,78V
Turn phone off and
ohm measure
between Vflash1
and ground.
Check C239, C279,
C304, C309, C350
R174, R202 and R352
.
~46k ohm
0R
Measure
Vio is
1,8V
~510k ohm
0 ohm
Check C207, C218,
C303, C404, C405,
C450, C451 and R173.
UEM FAILURE
Measure
Vout at
C302 is
~10,7V
Check C302
UPP FAILUREEND
UEM FAILURE
Yes
No
No
Turn phone off and
ohm measure
between Vio and
ground.
No
No
Yes
Yes
Yes
OK
Yes
OK
OK
No