NPL-1
6 - Troubleshooting
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Keypad
fault
Power Key
OK?
Yes
Keypad
fault 2
3DJH
No
Voltage on S300
approx = Vbat
Voltage on S300
while pressed
approx = Vbat
S300 ok ?
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PAMS Technical Documentation
No
Yes
No
Yes
No
Yes
Check C312 and
Z300
If Ok ->
UEM fail
Phone
jammed
Change S300
Phone
dead
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