Tdma800 Tx - Nokia NSW-5 Series Service Manual

PAMS Technical Documentation

TDMA800 TX

The transmitter chain is exactly same as in AMPS–mode, but the power
amplifier is biased to more linear mode, so it is important, that AMPS
have no faults.
Is AMPS mode OK
?
Check Vbias
N903
PIN16
V: > 2.8 V
Start power level
tuning. Does it work?
Issue 1 10/00
Disassembly and Troubleshooting Instructions
N
Y
N
Y
N
E Nokia Mobile Phones Ltd.
Start AMPS
troubleshooting
Check
CCONT
VR7_bias
(BaseBand)
Change
N750 and/or
Cobba
NSW-5
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