CONFIDENTIAL 13 (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
CONTACT SERVICE PROBLEMS
Note: If the Phone displays “ Contact Service “, Check with WinTesla which kind of selftest fails.
Before open the phone, try to flash it in every case of selftest failure.
In most of these cases, it would be possible to “repair” the phone or find out
more about that failure.
Possible failures with message “Contact Service”:
MCU ROM Checksum failed:
Try to flash the phone. If the failure persists, change D303.
RTC battery failed:
Change RTC battery and charge it, change N100 if failure persists.
(Charging RTC battery : Assemble phone and leave battery10 Minutes on it).
CCONT interface failed
Change CCONT (N100), (broken soldering).
DSP alive test failed:
Change COBBA. If failure persists, MAD should be the reason.
(Swap, because MAD is not changeable).
COBBA serial or parallel failed:
Change COBBA.
Warranty State failed:
Eeprom Data mismatch or phone is locked after swap process- send Phone to SACE.
If the Phone response any EEPROM mismatch ( PPM Validity ), Checksum failure or EEPROM failure,
- (D301) is faulty.
When your phone response a current consumption for empty Flash (~30mA) and doesn`t switch on
after a succesful update with WinTesla, D301 is faulty.
Message : Factory default values cannot be set – D301 is faulty.
NOTE: If COBBA or D301 has been changed, SIMLOCK & IMEI data must be set.
Also realign RX/TX values, especially TX I/Q. Never change D301 if you have no
permission to rewrite IMEI. In case of this send phone to SACE.
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