TSHOOT, ---SCHEMATY---GSM
[ Pobierz całość w formacie PDF ]Programmes After Market Services (P.A.M.S.)
Technical Documentation
NME–2A
SeriesTransceivers
Troubleshooting
Instructions
Original 08/97
NME–2A
Troubleshooting Instructions
P.A.M.S.
Technical Documentation
AMENDMENT RECORD SHEET
Amendment
Number
Date
Inserted By Comments
08/97
Original
Page 2
Original 08/97
P.A.M.S.
NME–2A
Technical Documentation
Troubleshooting Instructions
Contents
Page No
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BB Troubleshooting Flow Diagrams
5
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5
Flash Programming OK; part 1
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6
Flash Programming OK; part 2
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7
Flash Programming OK; part 3
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8
Flash Programming OK; part 4
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9
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Display Selftest Failed
10
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No Registration to the System (no serv)
11
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12
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RF Troubleshooting Instructions
13
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14
RX Part
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14
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UHF Synthesizer
17
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19
VHF Synthesizer
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19
Original 08/97
Page 3
Troubleshooting Instructions
PWR Button Fault
Audio Fault
TX Part
NME–2A
Troubleshooting Instructions
P.A.M.S.
Technical Documentation
[This page intentionally left blank]
Page 4
Original 08/97
P.A.M.S.
NME–2A
Technical Documentation
Troubleshooting Instructions
Troubleshooting Instructions
The purpose is to define fault block of the module and then find out the
broken component. The trouble shooting diagram has been planned so
that the fault, whatever it is, can be found by as simple measurements as
possible.
Required servicing equipment:
– PC for PCLocals
– Power supply (12 V 5 A)
– Digital multimeter
– Oscilloscope with 10:1 probes
– Spectrum analyzer (capable of 10 W input e.g. external attenuator)
– Signal generator
– Test SIM
– RF cables with BNC or N in the other end
– Modular cable
– RS232/M2BUS adapter DAU–2
– HP8922H
BB Troubleshooting Flow Diagrams
The baseband flow diagrams 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 sub–branch.
Original 08/97
Page 5
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