Nokia 8910 - Locking and unlocking the keypad; Accessing a menu function by scrolling

CONFIDENTIAL 15 (16)
NHM-4/NHM-4NX 8910/8910i Repairhints
Customer Care Europe, Middle East & Africa Version 2.0 Approved
SCCE Training Group Date 03.06.2003
© NMP 2003
Checked by:
SCCE Training Group
Approved by:
SCCE
- If all signals are ok, press the power on button again and check:
o Vflash1 = 2.8VDC at V130 Pin 6. If the voltage is not ok, check Vflash line to UEM D200 for shorts or
disconnections and resolder or change faulty components.
o Vbat = 4VDC at V130 Pin 52,53 and 54 (depends on workbench voltage). If the voltage is not ok, check Vbat
line to battery connector X101 for disonnections and resolder or change faulty components.
o PURX = 1.8VDC at V130 Pin 44. If the voltage is not ok, check line for shorts or disconnections and change
the faulty components.
o VIO = 1.8VDC at V130 Pin 18, 32 and 49. If the voltage is not ok, check line to D200 UEM for shorts or
disconnections and resolder or change the faulty one.
o Check LPRFCLK = 26MHZ at V130 Pin 50 (see picture below)
- If all signals are ok, change the V130 Bluetooth module.
- After changing the Bluetooth module, flash the phone again.
- If the same fault persists (C683), probably one or all CBUS signals are missing. In this case D200 UEM, D400 UPP or
PWB is faulty.
Note! When the flashing fails with fault code (C683) it is not possible to measure the CBUS signals, because the SW is
not completely functioning.