Nokia 5510 - General Information; Package Contents and Network Services

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CMT Troubleshooting PAMS Technical Documentation
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The phone is dead
The voltage at C404, C202,
C226, C227, C228 is = 3,6V
Failiure in Vbatt line.
Check X203, R220.
No
Voltage on R224 = 3,6V
Defective N201 or
PCB
Yes
No
Voltage at C316= 2,8V
Voltage at C243 = 2,8V
when WDDISX is grounded
Yes
WDDISX = 0 when
PWR switch is pressed
No
Defective CCONT
(N201)
Yes
Check power switch
Check WDDISX line :
PWR switch -> R402
->R224
No
Defective PCB
Ok
See section "Phone is
unable to stay ON"
Yes