Bell 6B KTS Manual page 53

Key telephone system
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BSP 518·411·100·i01 1978·08·53.jpg
DEPRESS
STEP SWITCH
END OF
TEST 9
Fig. 28- Test 9 Sequence-Slow CO Disconnect
DEPRESS
STEP SWITCH
END OF
TEST A
Fig. 29-Test A Sequence-Fast CO Disconnect
Scanned by Fra n k H arrell, (Cowboy Frank) Castle Rock, Colorado Oct 15, 2012 2 1 : 1 4 : 1 2
NO
DISPLAY
BLANK
YES
REPLACE 486A KTU
OR REMOVE 488A
KTUs ONE AT A TIME
UNTIL DISPLAY SHOWS
9 . REPLACE
DEFECTIVE KTU .
NO
DISPLAY
BLANK
YES
REPLACE 486A KTU
DR REMO V E 488A
KTUs ONE AT A TIME
UNTIL DISPLAY SHOWS
A . REPLACE
DEFECTIVE KTU .
ISS 1 , SECTION S 1 8-4 1 1 - 1 00
IF 8 IS DISPLAYED
DEPRESS SWITCH
AGAIN. IF 8 STILL
DISPLAYED, START
FROM PREPARATION .
IF 9 IS DISPLAYED
DEPRESS SWITCH
AGAIN . IF 9 STILL
DISPLAYED , START
FROM PREPARATION
Page 53

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