Nokia Ringo 3 Troubleshooting Instructions 06
PAMS Technical Documentation
NHX±7 Series Transceiver
Chapter 6
Troubleshooting
Instructions
Original 10/98
NHX±7 |
PAMS |
Troubleshooting Instructions |
Technical Documentation |
AMENDMENT RECORD SHEET
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Page NS±2 |
Original 10/98 |
PAMS |
NHX±7 |
Technical Documentation |
Troubleshooting Instructions |
CONTENTS
|
Page No |
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
NS±4 |
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
NS±5 |
Logic Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
NS±6 |
Receiver Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
NS±7 |
Transmitter Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
NS±8 |
UI Module Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
NS±9±14 |
Call Set±up Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
NS±15 |
Original 10/98 |
Page NS±3 |
NHX±7 |
PAMS |
Troubleshooting Instructions |
Technical Documentation |
TROUBLESHOOTING
The purpose of the troubleshooting is to define the faulty module block, and then to locate the faulty component. The troubleshooting diagram has been planned so that the fault, whatever it is, can be found by as simple measurements as possible.
The flow charts give you the overview of the blocks. The purpose is that you proceed through the flow diagram so that, if your answer is YES for the asked question, go straight to the next level, but if your answer is NO, you have to go the subbranch.
Required servicing equipment:
±PC for Service Software
±Power supply (2.0A)
±Digital multimeter
±Oscilloscope
±Signal generator
±Spectrum analyzer
±RF cables
±Service cables
±RF±adapter AAT±7X
±Test jig JSU±7
±RS232/MBUS adapter
Page NS±4 |
Original 10/98 |
PAMS |
NHX±7 |
Technical Documentation |
Troubleshooting Instructions |
Introduction
The General Troubleshooting chart defines the most likely fault categories.
START
Will turn into local mode ?
OK
Receiver OK ? |
FAIL |
(SINAD OK) |
|
OK |
|
Transmitter operating |
FAIL |
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(RF power OK) ? |
|
OK |
|
Earphone level/ |
FAIL |
modulation (nom, max) |
|
OK |
|
Is display/keypad |
FAIL |
module working ? |
|
Logic fault
Receiver fault
Transmitter fault
Earphone level or modulation fault
Display or keypad fault
OK
FAIL
Call set±up ? |
Call set±up fault |
OK
END
Original 10/98 |
Page NS±5 |
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