Table of Contents
Advertisement
NSW-5
Disassembly and Troubleshooting Instructions
TDMA1900 TX
TDMA1900 mode and DAMPS mode have common IF section and anten-
na circuit and thus it is important that DAMPS mode have no faults.
Is TDMA800 mode
OK
?
Y
Are LO signals
OK
?
Y
Check current
consumption
I: > 350mA(rms)
N
Make press down test
for PA. Inreasing
current consumption ?
N
Page 42
N
Start TDMA800
troubleshooting
N
Start synth
troubleshooting
Y
Check antenna circuit
and Duplex–filter
Chort circuit in PA?
Resolder or change
Y
PA.
E Nokia Mobile Phones Ltd.
PAMS Technical Documentation
Note!
Check VHF and UHF locals including
LO–buffer, measuring point for UHF is
N980 pin5.
Note!
The PA ground slug
might be poorly soldered
or there is delamination
on chip.
Issue 1 10/00
Advertisement
Chapters
Table of Contents
Troubleshooting
