Tdma800 Tx - Nokia NSW-6 Series Disassembly & Troubleshooting Instructions

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
PIN16 N903
V: > 2.8 V
Start power level
tuning. Does it work?
Issue 1 12/99
N
Start AMPS
troubleshooting
Y
N
Check
CCONT
VR7_bias
(BaseBand)
Y
N
Change
N700 and/or
Cobba
E Nokia Mobile Phones Ltd.
Disassembly & Troubleshooting
NSW-6
Page 37