Philips SPENDEX 40 Maintenance Manual page 54

NATO CONFIDENTIAL
SPENDEX 40 UA 8251/00 AND /Ol
LIMITED MAINTENANCE MANUAL
System test - fault finding table
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F a i l u r e
Suspected module
- No sound audible in the telephone.
- No speech recognisable.
FIRST CHECK THE
LOW/HIGH FREQUENCY
SETTING"
Handset
Front panel
Connecting board
Analysis board
Synthesis board
Key generator board
Telephony board
Line interface board
Modem
M a i n s / l i n e fi l t e r
Handset
Front panel
Connecting board
Analysis board
Synthesis board
Key generator board
Telephony board
Line interface board
Modem
M a i n s / l i n e fi l t e r
r
9922 154 13431
NATO CONFIDENTIAL
6-15