Maintenance - AT&T Bell System Plant Series Identification, Installation, Connections, And Maintenance

SECTION 502-690-101
3.11
For DDD calling, punch out the access code,
if required, area code, and the complete
telephone number.
3.12
Check card before using to be sure it is
properly punched for the number desired.
There should be two punched holes in each row
plus a STOP, if required. Holes should be punched
out completely and neatly.
Station Number Card
3.13
To install station number card, remove
faceplate (4.04) by releasing latch located
above card slot and slide number card behind
number card retainer. Replace faceplate.
4. MAINTENANCE
4.01
Refer to appropriate sections for maintenance
of components, such as handset, key, ringer,
dial, etc.
4.02
Maintenance of this card dialer is limited to
the following:
( 1) Sticking Cards: Make visual inspection of
dial for loose parts or wires which might
interfere with the dial mechanism.
(2) Foreign Material: Check for material such
as paper clips, hairpins, etc. lodged in card
slot.
(3) Faulty Cards: Check cards for proper size
by comparing with a working card. Replace
bent or mutilated cards. Depress R bar to
release any stuck cards.
(4)
Wrong Numbers: Verify coding of card.
Check at least twice on line with a test code
card. Check operation of TOUCH-TONE dial in
the normal manner.
4.03
If tests indicate trouble in the F-58553 dial,
replace the dial.
Note: Do not make any adjustments on
the F-58553 dial in the fleld.
Page 4
Faceplate Removal
4.04
To remove faceplate:
(1) Place point of KS-16750 type releaser or
equivalent at edge of faceplate catch.
(2) Push catch toward rear of set until releaser
enters notched portion of faceplate.
(3) Turn point of releaser under faceplate and
raise.
Note: When replacing faceplate, use releaser
to hold catch until faceplate is in position.
Housing Removal
4.05
To remove housing:
(1) Loosen four captive screws through access
holes in base of set.
(2) Lift housing straight off.
Dial Replacement
4.06
To remove F-58553 dial:
(1) Remove faceplate and housing, 4.04 and 4.05.
(2) Disconnect spade-tipped dial leads from
network and terminal board.
(3) Turn set on side, remove dial mounting
screws and lift dial away from base.
(4) To replace dial, reverse procedure.
Caution: Handle dial with care
so as
not
to bend or damage reed leads.
(5) Check manual and credit card dial operations.
Ringer Replacement
4.07
To remove M1A ringer:
(1) Remove faceplate and housing, 4.04 and 4.05.
(2) Disconnect ringer leads from terminal board.