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PAMS
Technical Documentation
General Troubleshooting
Will turn into
Receiver OK ?
(SINAD OK)
Transmitter operating
(RF power OK) ?
Earphone level/
Is display/keypad
module working ?
Original, 01/98
The General troubleshooting chart shows
START
the most common fault areas These seven
fault types can be used to define the pos-
sible fault.
local mode ?
OK
FAIL
OK
FAIL
OK
FAIL
modulation
(nom, max)
OK
FAIL
OK
FAIL
Call set–up ?
OK
END
Disassembly & Troubleshooting Instructions
Logic fault
Receiver fault
Transmitter fault
Earphone level or
modulation fault
Display or keypad fault
Call set–up fault
NHX–4N
Page 7
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