User Guide

PAMS
Technical Documentation
NSE–6
Disassembly & Troubleshooting Instructions
Page 27
Original 08/98
Receiver Fault (6)
AFC
RSSI tuning working OK ?
Receiver
Fault
N250 (R660)
voltage between 0.5 – 2.3V
Check AFC–line for
short circuits, if OK change
Set SpectrumAnalyzer
Frequency: 13 MHz
Span: 10 kHz
RESBW: 3 kHz
13 MHz in midst,
(L660)
Use sevice software to set AFC
to MAX
AFC–voltage
~2.3V
Main clock
> 13 MHz
Check R660 and C660, if
OK change N250
Change G660
YES
YES
YES
NO
NO
NO
NO
NO
NOTE !
If DSP in MAD does not work
properly, supply voltages stays
down.
N250