Nokia 9110 Service Manual
PAMS
Technical Documentation
RAE–2
Troubleshooting
Page 7 – 7
Original 02/99
CMT Troubleshooting
The following hints should facility finding the cause of the problem when
the CMT circuitry seems to be faulty. This troubleshooting instruction is
divided in main level to BaseBand and RF faults.
the CMT circuitry seems to be faulty. This troubleshooting instruction is
divided in main level to BaseBand and RF faults.
The first thing to do is carry out a through visual check of the module. En-
sure in particular that there are not any mechanical damages and sol-
dered joints are OK. If the CMT module is able to communicate with Win-
Tesla software, you can use it to find out faulty circuits from CMT module.
Selftest checks all CMT baseband Asics and memory components and
reports the result as passed or failed. If every test is passed, you can
perform different kind of calibration and tuning operations and deduce
which is the faulty circuit.
sure in particular that there are not any mechanical damages and sol-
dered joints are OK. If the CMT module is able to communicate with Win-
Tesla software, you can use it to find out faulty circuits from CMT module.
Selftest checks all CMT baseband Asics and memory components and
reports the result as passed or failed. If every test is passed, you can
perform different kind of calibration and tuning operations and deduce
which is the faulty circuit.
Baseband faults
At least the following measurement devices are needed for fault debug-
ging in BaseBand section:
ging in BaseBand section:
– PC for the Wintesla with software protection key (dongle)
– RS–232 cable (DAU –9C)
– Repairing jig MJS–4
– Flashing Tools FLA–7, FPS–4 and TDF–4
– Service Battery BBS–5
– Service Battery BBS–5
– Calibration Unit JBE–1
– power supply, digital multimeter and oscilloscope