Nokia NSW-6 Series Disassembly & Troubleshooting Instructions page 39

PAMS Technical Documentation
Check VAPC
V:>2.5 V
N
Check TXC
Typ 1.5V@PL2
Y
Start powercontrol
troubleshooting
Check COBBA
TXCDAC
(BaseBand)
Issue 1 12/99
Check PA input
Y
power
P:> 0 dBm
N
N
Check Z975 filter
Insertion loss
IL>4dB
N
Check TX–driver
input P:> –20dBm
N
Check N980
upconverter
output
P:> –20 dBm
N
Check TX–IF
f: 196.23 MHz
P:> –35 dBm
E Nokia Mobile Phones Ltd.
Disassembly & Troubleshooting
Y
Change
PA
Y
Change
Z975
Y
Change
N951
Check Z950 insertion
Y
loss. Max 4 dB.
N Check Z900
insertion loss. If >
4dB, check R926
and C923 or
change N700.
NSW-6
Page 39