Nokia 7110 - Page 8

CONFIDENTIAL 8 (30)
NSE-5
Service & Analysis Center Europe Repairhints Version 1.0 Approved
SACE AMS Training Group 30.07.2000
Repairhints_nse5_002508 Checked by:
AMS TRAINING GROUP
Approved by:
SACE
X100 SIMcard Reader
- Check solderings of connector.
- Check if bend or soiled, change if necessary.
SIM lines shorts to GND
- Check resistance of SIM lines to GND at C116, C129, C130, C131,- value should be higher than
100kOhm.
- Check also R120.
N100 CCONT faulty
- Check SIMClock, SIMData, SIMReset and VSIM.
- It´s also possible that broken solderings under CCONT N100 are the reason for this fault. Remove CCONT,
tinplate oxidized pads carefully with only a little bit of flux and solder, replace CCONT with µBGA
rework machine.
N200 COBBA faulty
- If “SIM card not accepted” appears on LCD, but SIMlock-settings are ok or no SIMlock is set, it is
necessary to change COBBA N200.
Note that you have to rewrite SIMlock-data and tune Rx/Tx-values of the phone after changing the
COBBA,