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BELL SYSTEM PRACTICES
Plant Series
1.
GENERAL
This section is reissued to:
1.01
eAdd 1013A test set and show lOllB test set
MD
eRevise Table A to include additional telephone
sets
Changes or additions in the body of tables is
indicated by shaded areas.
512-510-200-i07_1970-12·01. jpg
BSP
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado
INTERPHONE SYSTEM-1 A HOME
INSTALLATION AND MAINTENANCE
Fig. 1-1A Home lnterphone Installation
© American Telephone and Telegraph Company,
Printed in U.S.A.
Ap
29,2012 18:39:50
r
2.
INSTALLATION
Planning
When planning lA home interphone installations,
2.01
consider the following:
(a) Avoid placing apparatus with plastic covers
or parts in direct sunlight or in locations
1970
SECTION 512-510-200
Issue 7, December 1970
AT&TCo Standard
1
Page
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Summary of Contents for AT&T Plant Series
- Page 1 BELL SYSTEM PRACTICES SECTION 512-510-200 Plant Series Issue 7, December 1970 AT&TCo Standard INTERPHONE SYSTEM-1 A HOME INSTALLATION AND MAINTENANCE Fig. 1-1A Home lnterphone Installation GENERAL INSTALLATION This section is reissued to: 1.01 Planning eAdd 1013A test set and show lOllB test set When planning lA home interphone installations, 2.01...
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Page 2: System Components
SECTION 512-510-200 See appropriate section in Division 463 for where ambient temperature may exceed 140 degress F. installation procedures for this box. (b) The transformer must operate from a power (c) Make connections as shown in Fig. 6 and outlet not controlled by a switch. appropriate connections and maintenance section and replace cover. -
Page 3: Mounting Hole
ISS 7, SECTION 512-510-200 LOUDSPEAKER MOUNTING HOLE CORD Fig. 2-759A Loudspeaker 730A Receiver (door answering unit): other pair connects to the 2-terminal connecting 2.08 block. (a) Mounted on door casing or outside wall at a convenient height for microphone pickup (e) The 730A receiver is weatherproof. - Page 4 SECTION 512-510-200 Fig. 3--730A Receiver (2) Turn microphone and loudspeaker gain Make final check of interphone and door controls (Fig. 4) fully counterclockwise answering feature as follows: (minimum gain). eOperate line key at station being tested to (3) Connect •1013A or lOllB (MD)• test set with interphone line.
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Page 5: Maintenance
ISS 7, SECTION 512-510-200 Cleaning When cleaning the 51 A control unit housings, 3.01 use a water-dampened K S-2423 cloth or equivalent. Do not allow excess water to enter grills of loudspeakers. Do not use scouring powders or cleansers. 3.02 If cleaning does not produce the desired appearance of components, replace components. - Page 6 SECTION 512-510-200 top of the board after the P-number near the e Will remain operated as long as handset is transformers and the date is stamped at the off hook and line key remains operated to bottom of the board. interphone.
- Page 7 ISS 7, SECTION 512-510-200 TABLE B TROUBLE LOCATION INFORMATION TROUBLE TROUBLE TEST TEST TROUBLE CORRECTION INDICATION CAUSE EQUIPMENT AC power 105 to 130V Trouble Refer to customer failure ac at outlet lamp 2012A or 6 to 8V ac Voltmeter Replace transformer or KS-16184 at terminals ac scale...
- Page 8 "' ..,..., "'11 (1:1 TERMINAL RELAY CONTROL CIRCUITRY P-IIE655 WIRING BOARD ..<> 0> MICROPHONE AMPLIFIER INTERPHONE [ � LINE CENTRAL 0.25 OFFICE LINE 0---0- -0- -0 MIKE BAT. 2537A TRANSFORMER L5PK Fig. 6-SlA Control Unit Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, 2012 18:41:51 512-510-200-i07 _1970-12-0S.jpg...