Bell System Plant Series Maintenance Manual

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BELL SYSTEM PRACTICES
Plant Series
SECTION
506-101-301
Issue 3, February, 1966
AT&TCo Standard
COIN TELEPHONE - 1 A 1
MAINTENANCE
1. GENERAL
1.01
This section is reissued to:
• Reflect changes in design
• Revise illustrations
Since this reissue covers a general revision, ar-
rows ordinarily used to indicate changes have
been omitted.
2. CLEANING
2.01
When necessary, the surface of the
1A1 coin telephone may be cleaned with
KS-7860 petroleum spirits or a suitable liquid
wax such as Johnson's No. 7700 cleaning and
polishing wax emulsion.
Warning: KS-7860 petroleum spirits is
highly flammable. Use safety precautions
while it is being used.
3.
MAINTENANCE
3.01
Maintenance of the 1A1 coin telephone set
is limited to cleaning switch hook, clear-
ing of foreign objects from coin chute and re-
placement of the following components:
• G3P-52 handset
• BE dial
• P-83B700 dial and housing assembly
• P-15E779 cover unit assembly
• P-15E730 return chute assembly
• P-15E718 coin hopper and relay assembly
• P-15E687 coin relay
• P-15E428 coin chute-totalizer assembly
• P-24E342 coin chute
• P-15E579 totalizer assembly
• P-15E491 coin return assembly
• P-15E437 chassis assembly
• C4A ringer
• Instruction cards
• 303K Mercury relay
COVER
3.02
To remove cover
(1) Unlock 29A lock.
(2) Release locking mechanism with 719A tool
(see Section 506-101-201) by turning tool
1/8-turn counterclockwise.
(3) Slide cover forward about 3 inches to ob-
tain access to plug Pl.
(4) Disconnect plug Pl (Fig. 1) by pulling
straight out as cover is carefully lifted
off.
COIN CHUTE-TOTALIZER ASSEMBLY
3.03
To remove coin chute-totalizer assembly
(1) Disconnect plug P2 (Fig. 1).
(2) Release chute locking lever and spring.
(3) Lift spring out of groove in coin chute.
(4) Tilt top of coin chute forward and lift out.
©American Telephone and Telegraph Company, 1966
Printed in U.S.A.
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