3.6.64
Handsfree Console:
1.
Check station wiring for Handsfree Console as follows:
Station
Wire from Handsfree Console
Board
Normal Station
Power Fail Station
RR
W T
W T
FL
BR
RD
RD
C
BR,YL
BK
LK
LGN
LGN
VI
VI
SG
BL
BL
RB
OR
OR
Strap RR to
Remove strap BK to C
Wires PK, LBL, BK and GN should be insulated (taped) separately and stored in the station
2.
Check that connector D in HFC is strapped 1 to 2 and 4 to 5.
3.
Check that microphone and speaker are connected in
Speaker:
to
and SP2
Microphone:
RD to Ml and WT to M2.
4.
Check that station can make an ordinary ICM call, if it can, replace Handsfree Console.
INTERNAL EXTENSION TEST
3.6.65
1.
2.
3.
4.
3.6.66
1.
Internal Extension Intercom Call:
Check wiring to Internal Extension, extension should be cabled to A-pair position on SDF
block.
Check voltage between wires, must be between 30 and 40V extension on hook. If voltage is
incorrect, replace
board.
Check transmitter, receiver, switchhook and wiring in Internal Extension (decadic
telephone).
Change
board.
Internal Extension Intercom Call:
Check links on
board CN connectors.
Link l-2 for exchange line access
Link 2-3 for intercom only. Carry out remote extension test.
2.
3.6.67
1.
Change
board.
Internal Extension Intercom Call:
Internal Extension must be a standard decadic telephone. Test the telephone on an
exchange line.
2.
3.
3.6.68
1.
Test called extension and confirm its operation.
Replace
board.
2.
Internal Extension ADD ON:
The switchhook is flashed by depressing it for about half a second. If switchhook flash is
unsuccessful, try again.
Replace
board.
3.6.69
Internal Extension Disconnection:
1.
Check that extension is on hook for at least 1 second.
2.
Change internal extension.
3.
Change
board.
181
ISSUE 2