AT&T 636CA, Service Manual

Page: 13 / 14

ISS 4, SECTION 502-61 0-418
NO. OF
SIGNAL
KEYS
1
2
3
4
5
6
Notes:
TABLE C
PICKUP-SIGNAL KEY CONVERSION
3RD(636CA) OR 5TH(637DA) MODULE
NO. OF PVT KEY PLUG LEADS AND TERMINALS
OR INTER-
COM LINES
(COM. SIG) 0-W S-W G-R BL-BK
BR-BK
NOTE
I
25 25 25 30 30
25 25 25 30 18
25 25 25 18 18
25 25 18 18 18
25 18 18 18
18
18 18 18 18 18
2 25 25 25 39 39
3 25 25 39 39 39
4 25 39 39 39 39
5 39 39 39 39 39
0-Y
Y-0
18
39
18 39
18 39
18 39
18
39
18 39
30 39
30 39
30 39
30 39
1 When using converted 6th pickup button as common signaling key, remove, in­
sulate and store
(
Y
-0)
mounting cord lead from terminal 39.
2 If more than six signal keys are required, replace 635G5C key with a 658A key.
If more than five private or intercom lines are required, convert keys in 2nd
(636CA) or 4th (637DA) module in same order. Connect plug leads to terminal
39 to utilize common signal key. If additional terminals are required, use any
spare terminal and strap to 39.
SSP
502·610-418-i04_197S-03-13.jpg Scanned by Frank
Harrell,
(Cowboy Frank) Castle Rock, Colorado Feb 04,2012 14:38:56
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