Western Electric MAGICALL KS-19594 User manual

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Western Electric Company
INCORPORATED
Issue Date: Sept. 30, 1967
2855 N. FRANKLIN ROAD
INDIANAPOLIS. INDIANA '46226
MAGIC ALL
KS-19594
DIALER
This manual is designed for testing am repair of the KS-19594
MAGICALL
dialer.
COMPANY PRIVATE
The information contained in this manual is con-
sidered "Company Private" and shall be maintained
confidential.
Distribution of this manual is restricted to inter-
ested Bell System personnel having a need to know.
No part of this material may be revealed to per-
sons outside the Bell System without the written ap -
proval of the Central Region Engineering Manager.
SPECIFICATIONS
Operating Ambient Temperature .•••. 20 to 120° F.
Power Consumption:
During Standby .••.•••.••..•....•
During Recording .•••••.•..•..•.•
During Dialing .•.•..•..•.....•.•
11 Watts
31 Watts
17 Watts
34 Watts
During Rapid Scan ••••••••••••.••
Power Requirements . • • • • • . • • • . • . . 117 V AC 60 cps
Dial Pulsing:
Recording capacity
per entry line .•••••••
108 pulses in 14 digits
plus one walt for ap-
pearance of second dial
tone.
Pulsing Rate ...••••••• 9.5 to 10.5 pps.
Make-Break .•..•.•..• Open Pulse (Break) be-
tween 58 to 64 percent
of total pulse.
Interdigital Time .••••• O. 60 second minimum.
Muting .•••.•.•••••• , • Two isolated outputs,
short circuit 0.1 second
minimum before puls ing,
continuous throughout
pulsing, and 0.15 to 2. 0
seconds after pulsing.
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Reference Drawings:
SD-99436-01-Al, Common Systems
SD-99436-01-Bl, Schematic FS 2
SD-99436-0l-B2, Schematic FS 1
SD-99436-0l-B3, Schematic FS 1
SD-99436-01-Cl, Parts List
SD-99436-0l-C2, Parts List
SD-99436-01-Dl, Circuit Notes 101-104
SD-99436-0l-D2, Notes 301-303, Waveforms
SD-99436-0l-D3, Note 303 continued
SD-99436-01-Fl, Circuit Requirements
Reference Specifications:
KS-19594 ••• o •••••••• o •• o •••••• BTL Specification
RS-2550 73, Sec. A •••••• o. o ••••• Repair
Sec. B •••••••••••• o. Repair Methods
Sec. D o ••••••• o • o • • • Modifications
Sec. E •••••••••••••• Test & Adjust
Sec. F ••••• o •••••••• Troubleshooting
Sec. G ••••••••••• Warranty Information
DIALER
BEARS THE MARKING "BELL SYSTEM"
THIS MANUAL CONTAINS INFORMATION AND PHOTOGRAPHS PRESENTING PROPRIETARY DESIGN
INFORMATION WHICH IS THE PROPERTY OF DASA CORPORATION, ANDOVER, MASSACHUSETTS.
THIS PROPRIETARY DESIGN INFORMATION HAS BEEN REPRODUCED WITH THE PERMISSION OF
DASA CORPORATION ON THE CONDITION THAT IT WILL NOT BE DISCLOSED TO ANY OTHER MANU-
FACTURER OR USED FOR
ANY PURPOSE OTHER THAN ACCEPTANCE INSPECTION, AND MAINTEN-
ANCE oi;: THE SUBJECT APPARATUS.
Description
The KS-19594 dialer is a magnetic recording
repertory dialer intended for use in conjunction with
a telephone
set. The dialer is placed in a convenient
location near the telephone set and is electrically con-
nected, although it does not interfere with normal
telephone set usage. This dialer consists of three
individual component items: a KS-19594 Ll dialer
unit containing the record-reproduce mechanism,
electronics and control circuit; a KS-19594 L2 dial-in
unit for recording numbers into the repertory; and a
wall-mounted KS-19594 L3 power supply. The dial-in
unit connects to the dialer unit by means of a plug and
cord and is to be detached and stored when not in use
for recording.
The KS-19594 dialer is the same as the Model E3
MAGICALL
except as authorized herein, manufactured
by the DASA Corporation, Andover, Massachusetts,
and is their proprietary design.
A power source of 115volts, 60 cycles, is required
for the operation of this dialer.
The dialer unit and the dial-in unit are furnished
with a choice of five different colors of cover and
cords. The cordonthedial-inunit (KS-19594 L7 cord)
is permanently attached by means of solder connec-
tions. Two cords are provided with the dialer unit,
one for connection to the power supply (KS-19594 LS
cord), the other (KS-19594 L9 cord) to the associated
telephone set.
The design of the KS-19594 dialer permits com-
plete interchangeability of all component items (dialer
unit, dial-in unit, cartridges, and power supply) with-
out requiring any readjustment.
The KS-19594 Ll dialer unit is the basic compon-
ent of this dialer and contains the record-reproduce
mechanism, electronics and control circuit. It in-
cludes a KS-19594 L4 cartridge providing for 400
entries, a KS-19594 LS cord, a KS-19594 L9 cord, and
a KS-19594
Lll cover. A motorized scan mechanism
provides for rapid movement of the recording tape
while final positioning may be done with a manually
2
operated knurled wheel. The cartridge is easily re-
movable and requires merely lifting the access cover
and depressing the release bar to permit the cartridge
to snap out of the bottom of the dialer unit. When
desired, a KS-19594 L5 cartridge may be substituted
for increasing capacity to 1000 entries.
The KS-19594 L2 dial-in unit is equipped with a
KS-19594 LlO
cover and a KS-19594 L7 cord. This
attached plug and cord provides for connection to the
dialer unit during recording of numbers into the reper-
tory. The dial-in unit is used only during the record-
ing process and must be detached during calling. It
is provided with a motor-assisted telephone-type dial
and a "wait" lamp for use during the recording process.
The KS-19594 L3 power supply is a wall -mounted
unit which operates from a 115-nlt, 60-cycle outlet.
It provides power for operation of the dialer at two
voltages: 18 volts de and 29 volts ac. A 4-conductor
cord (KS-19594 LS cord) provides for connection to
the
dialer unit. When required, the distance between
the power supply and dialer unit may be extended by
the use ofa suitable 4-conductor cable such as ordinary
JKT wire. This power supply is provided with an
attached 3-wire power cord (18 inches long) equipped
with a
right angle parallel blade grounding cap. Both
the power cord onthe outlet side and the power supply
cover are light olive gray color.
The KS-19594 L4 cartridge provides the record-
ing tape with capacity for 400 entries. Marking on the
tape is provided for alphabetical grouping of the names
(and telephone numbers) with a single red line for in-
dexing against the letters of the alphabet at the bottom
of the viewing window.
The KS-19594 L5 cartridge is similar to the
KS-19594 L4 cartridge but provides capacity for 1000
entrieso
The KS-19594 L6 cartridge is similar to the
KS-19594 L5 cartridge, except that the alphabetical
grouping and red index line are not provided. This
cartridge permits grouping of entries on an individual
basis for special requirements.
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The KS-19594 L14 cartridge is similar to the
KS-19594 L6
cartridge, except that each line is num-
bered consecutively in sequence from 1 through 1000
on the left-hand side of the tape. A continuous thin
red line is provided the length of the tape to index the
line numbers on the tape with the guide numbers on a
KS-19594
Ll5 adapter plate for rapid search of a
specific entry. The tape cartridge may be provided
with the telephone numbers recorded and with the
names and telephone numbers printed on the writing
surface in accordance with a customer-furnished list.
The KS-19594 L7 cord provides for connection of
the
dial-in unit tothe dialer unit. This cord is term i-
na.ted at one end in a plug and at the other end in
tinned
leads for solder connection inside the dial-in
unit and is furnished in five different colors.
The KS-19594 L8 cord is a 4-conductor cord for
connection between the dialer unit and the power sup-
ply. It is equipped with strain relief and spade tips on
conductors at both ends and is furnished in five dif-
ferent colors.
The KS-19594 L9 cord is a 6-conductor cord for
connection between the dialer unit and the associated
telephone set. It is equipped with strain relief and
spade tips on all conductors at both ends and is fur-
nished in five different colors.
The KS-19594 LlO cover is a component part of
the KS-19594
L2 dial-in unit and is furnished in five
different colors.
The KS-19594 Lll cover is a component part of
the KS-19594 Ll dialer unit and is furnished in five
different colors.
The KS-19594 Ll2 cover is a component part of
the KS-19594
LlOl dialer and is furnished in five dif-
ferent colors. It is similar to the KS-19594 Lll cover
except for the additions of a lamp and hood for illumi-
nating the viewing window.
The KS-19594 L15 adpater plate provides an in-
dexing guide for numerical listing of numbers when a
KS-19594 L14
cartridge is used.
The KS-19594 Ll 00 dialer, assigned for conven-
ience in ordering a complete dialer assembly, con-
sists of a KS-19594 Ll dialer unit, a KS-19594 L2
dial-in unit, a KS-19594 L3 power supply, and sub-
scriber instruction leaflet DASA No. MIB-A65.
The KS-19594 LlOl dialer, assigned for conven-
ience in ordering a complete dialer assembly, consists
of a KS-19594 Lldialerunit(equippedwith a KS-19594
Ll2 cover), a KS-19594 L2 dial-in unit, a KS-19594 L3
power supply, and a
subscriber instruction leaflet
DASA No. MIB-A65.
The KS-19594 L102 dialer, assigned for conven-
ience in ordering an assembly, consists of a KS-19594
Ll dialer unit, a KS-19594 L3 power supply, and a
subscriber instruction leaflet DASA No. MIB-A65.
The KS-19594 Ll03 dialer, assigned for conven-
ience in ordering an assembly, consi~ts of a KS-19594
Ll dialer unit, without cartridge but with a KS-19594
Ll 5 adapter plate installed in the cover, a KS-19594
L2
dial-in unit, a KS-19594 L3 power supply, and a
subscriber instruction leaflet DASA No. MIB-A65.
The KS-19594 L104 dialer, assigned for conven-
ience in ordering a complete dialer assembly, is
similar to the KS-19594 LlOO dialer except that the
KS-19594
Ll dialer unit is equipped with a KS-19594
L5 cartridge.
The KS-19594 Ll05 dialer is assigned for conven-
ience in ordering a KS-19594 Ll dialer unit without a
cartridge.
The weight of these items is approximately as
follows~
KS-19594 Ll Dialer Unit - 5-3/4 pounds
KS-19594
L2 Dial-In Unit - 1-3/4 pounds
KS-19594
L3 Power Supply - 4-1/2 pounds
KS-19594
LlOO Dialer - 12-1/2 pounds
This apparatus has been listed by the Under-
writers Laboratories, Incorporated.
The KS-19594 dialer shall be obtained from the
DASA Corporation, Andover, Massachusetts, and is
intended to be furnished on telephone company orders.
The KS-19594 dialer does notreplace any product,
but will probably reduce the demand for the KS-16844
RAPIDIAL.
Ordering Information
Orders for this product shall specify the quantity,
KS number, list number, and dash number required to
specify color desired for following items:
UNIT, DIALER, KS-19594 Ll-(*)
UNIT, DIAL-IN, KS-19594 L2-(*)
SUPPLY, POWER, KS-19594 L3
CARTRIDGE, KS-19594 L4
CARTRIDGE, KS-19594 L5
CARTRIDGE, KS-19594 L6
CORD, (DIAL-IN), KS-19594 L7-(*)
CORD, (POWER), KS-19594 L8-(*)
CORD, (TELEPHONE), KS-19594 L9-(*)
COVER, (DIAL-IN), KS-19594 LlO-(*)
COVER, (DIALER), KS-19594 Lll-(*)
COVER, (DIALER), KS-19594 L12-(*)
CARTRIDGE, KS-19594 L14
ADAPTER
PLATE, KS-19594 L15
DIALER, KS-19594 LlOO-(*)
DIALER, KS-19594 LlOl-{*)
DIALER, KS-19594 Ll02-(*)
DIALER, KS-19594 Ll03-(*)
DIALER, KS-19594 Ll04-(*)
DIALER, KS-19594 Ll05-(*)
*Orders for the list 1, 2, 7 to 12 inclusive, and 100 to
105 inclusive product shall specify a dash number
after the list number, which indicates the color de-
sired, in accordance with the following:
Dash No.
-3
-51
-58
Color
Black
Moss Green
White
3
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POWER SUPPLY
STl\R
BU TI ON
CALL
BUTTON
WINDOW
GUIDE
LINES
DIAL-IN UNIT
TAPE
DRIVE
KEY
SELECTOR
WHEEL
' 'W AIT "
LIGHT
Fig. 1.
Magic Dialer Operating Controls.
OPERATING INSTRUCTIONS
(See Fig. 1)
Connecting the Dial-in Unit to the MAGICALL
Dialer automatically converts the Dialer for re -
cording. Any previously recorded codes and numbers
may be changed by dialing in a new number over the
old one.
In recording a sequence of numbers containing
trunk, access, or special codes, the Dialer can be
stopped by placing an interdigital time greater than
1. 0 second between the last digit of the trunk, access,
or special code and the remainder of the number.
This allows the user to receive an additional dial tone
before proceeding with the remaining part of the se-
quence. In this way, the correct placing of a call is
made independent of the time delay before additional
dial tones are obtained, however long this delay may
be.
4
To record a number, proceed as follows:
1. Lift the door in front.
2. Position the desired blank alphabetized space
on the tape between the red markings on the
writing platform by operating SELECTOR
WHEEL.
3, Write name and number in pen or pencil in
the plain white area. DO NOT write in grey
shaded portion.
4. Place listing between guide lines on viewing
window
by operating the SELECTOR WHEEL.
The wheel is engaged only when it is de-
pressed. This prevents it from turning when
the tape drive motor is running.
5. Plug Dial-in Unit in rear of Dialer.
6. Press CALL button. Do not proceed until
WAIT light goes out.
7. Dial the number exactly as it would be dialed
to place a call, including area codes, making
certain that the WAIT light on the Dial-in
Unit goes out before dialing each digit.
NOTE: DO NOT FORCE OR RETARD THE DIAL
SPEED. THIS WILL CAUSE A NUMBER
TO BE RECORDED INCORRECTLY.
8. When all digits in the telephone number have
been dialed, press the STAR button.
9. Disconnect the Dial-in Unit. If more than
one
listing is to be dialed at one time, it is
not necessary to disconnect the Dial-in Unit
after each telephone number is recorded.
Move the tape to the next position on which
a
number is to be recorded, and then press
the CALL button before dialing the new num-
ber. Disconnect the Dial-in Unit when all
recording is completed. The MAGICALL
Dialer is now ready for use.
NOTE: PRESSING THE CALL BUTTON AFTER
RECORDING WITH THE DIAL-IN UNIT
CONNECTED WILL ERASE THAT
NUMBER.
10, To record numbers when access codes (sucb
as "9") are required to obtain an additional
dial tone, the procedure is essentially the
same:
(a) Follow steps 1 through 6 as listed above,
(b) Dial in
the code number (such as "9"),
(c) Press the STAR button,
(d)
Proceed with steps 7 through 9 as out-
lined above.
To
place a call, proceed as follows:
1. Operate TAPE DRIVE LEVER to quickly lo-
cate desired alphabetical group, with the aid
of the red vertical index line on the tape.
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2. Turn the SELECTOR WHEEL to place the
name of the desired party between the guide
lines on the viewing window.
3. Lift telephone receiver for dial tone.
4. Press CALL button, call is placed.
5. If an access code (such as "9") must first be
used to obtain a second dial tone:
(a) Pick up telephone receiver for the first
dial tone,
(b) Press CALL button, and listen for the
second dial tone,
(c) Press STAR button to complete call.
If a tape has been recorded with an access code
(such
as "9"), and night lines or other situations
sometimes eliminate the need for using such a code,
it can be by-passed. Simply select the desired party
and press the CALL button before liftingthe telephone
receiver. The access code will be dialed but will be
ineffectual because of the on-hook condition of the
telephone receiver. When the code has been dialed,
lift the receiver to get a dial tone and press the STAR
button.
If a call is being placed from a key telephone or
switchboard and an incoming call is ringing from
another line, the MAGICALL Dialer can be stopped in
order to answer the other call immediately. This is
done by moving the SELECTOR WHEEL slightly off
the
existing line, or tapping the TAPE DRIVE LEVER.
If it is not stopped and the incoming call is answered,
the pulsing from the dialer will carry over to the in-
coming call.
(RS-2550 73, Section A)
REPAIR
Associated I nstructions{Not Filed in this Manual)
Specifications:
RS-255. 73, Section A
RS-255.73 Section G
RS-10020 22 Cleaning Plastic Surfaces
RS-1003.4 Buffing
RS-586.1 Cords
BSRS-350.002 Printed Wiring Boards
BSRS-470. 001 General Requirements
G-77239D DASA Corp. Contract & Warranty
G-78007D DASA Corp. Contract & Warranty
BSP-512-100
KS-19594 BTL Specifications
CD-99436-01 Circuit Description
SD-99436-01-B.1, B2, B3 Schematic Drawing
Packing Instructions:
Dialers or Dialer Units
Dial- In Unit
Power Supply
Cartridge
l Application
W.Eo Co. #92554
W.E. Co. #92555
W.
E. Co. #92556
W.
E. Co. #92557
This section outlines the methods and equip-
ment for repair of the KS-19594 MAGICALL
Dialero
2. Requirements
Repaired Magicalls shall meet the require-
ments of BSRS-451.. 919 and the applicable re-
quirements of BSRS-350.002 and BSRS-470. 001.
3. General l nformation
Warranty - DASA Corp. will warranty for
15 months from date of shipment from DASA, all
units for defective materials and workmanship.
Refer to Specification RS-255. 73, Section G, for
shipping dates and serial number information.
Repair by Western Electric - The Distribu-
ting House Repair Shop should attempt to repair
all units as covered in RS-255.73 and this manual
before returning them to the Dasa Corporation
for repair since:
a. Manydefectsareminor (transistor, diode,
capacitor) and can be located using the
Schematic Diagram on page 28 and the
information under "Troubleshooting" on
page 13.
b. This will avoid possible damage to units
while in transit to and from DASA.
c. This will eliminate packing and shipping
cost as well as charges DASA incurs for
their handling, refurnishing, and modifi-
cations.
Repair by DASA - DASA Corp. will repair com-
plete units or individual circuit boards FS 1 or FS 2.
Pack units and boards carefully.
DASA Repair Addresses:
DASA Corporation
163 Constitution Dr.
Menlo Park, Calif.
DASA Corporation
15 Stevens Street
Andover, Mass.
(R S-255. 73, Section B)
REPAIR METHODS AND MECHANICAL ADJUSTMENTS
1. Equipment and Material
Phillips head screwdriver
RS-255. 73, Section B
KS-6854
Screwdriver 3 1/2"
RS-16439 Bulk Magnetic Eraser (or RS-15419 and
RS-15421 Magnet Charger and Magna Treater).
KS-14427 Cleaning Emulsion
KS-7435 Dry-Cleaning Fluid
RS-14312 Cloth
Thickness gauge including O~ 020", o. 03511, O~ 045",
and O. 050" sizes.
Dow-Corning No. 560 Silicone Oil
2. Repair Procedure
2.1 Cords
Repair cords per Specification RS-586. L
Cords will be tested during the test of the unit.
5
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6
2 .. 2 Housings
2
.2-1 Dialer Unit
Remove
the dialer housing by removing
four
retaining screws in the base. Exercise
care when removing the housing to prevent
damage to the operating buttons and lever.
Reverse this procedure for replacement.
Buff the housing in accordance with
RS-1003., 3. Volume is too low to justify a
buffing
shield. Use Cleaning Emulsion
KS-14427 (RS-14645) to clean the plastic
areas that are inacessible by buffing, the
metal flipper and both sides of the view
window
.. Refer to RS-1002.22, Section Q,
for the method of cleaning.
2.2-2
Dial-In Unit
Remove the
dial-in wiit housing by re-
moving the four Phillips head screws from
the base.. Lift the cover off the Wlit. Re-
verse the procedure for replacement.
Buff the housing in accordance with
RS-1003.4. Volume is too low to justify a
buffing
shield.
2.2-3 Power Supply
Removethe power supply cover by loos-
ening the screw on the top of the housing.
This is a captive screw and consequently it
is not necessary to' remove the screw. Lift
the
cover from the power supply. Reverse
this procedUre tor replacement.
Buff the housing in accordance with
RS-1003.,4. It may be necessary to remove
and replace the label if damaged. Volume
is too low to justify a buffing shield.
2.3 Cartridge (See RS-255.73, pages A, 2)
2.4
Erase Tapes
Scan to the Z end of the writing tape. Re-
move the cartridge from the Dialer Unit. Connect
the RS-16439
Bu1k Magnetic Tape Eraser to a
110-120 volt outlet .. Hold the Eraser over the top
drum and press the button on the Eraser. Rotate
the
drum one turn exposing all the tape to the
eraser.
Also pass the eraser over the tape that is
not WOWld on the drum.
If a RS-16439 is not available, a RS-15421
Magna
Treater and RS-15419 Magna Charger
may be used .. Connect the Wlits per the equip-
ment sketch and place the cartridge in the ring ..
The whole tape will be immediately erased ..
A single line may be erased by connecting
the Dial-In Unit
to the Dialer Unit, pressing the
Call and then star buttons on the Dialer Unit.
2. 5 Clutch Adjustment
Push the head drive spool (#36, Fig .. 9)
back
against the back plate (#31, Fig. 9) while
depressing the CALL button.. The gap between
the head
drive spool and clutch (#32, Fig .. 9)
should
be • 045 inch.. If not, loosen setscrew
(#32A, Fig. 9) on front clutch and adjust for
.045-inchgapandlightly tighten setscrew, making
certain that the setscrew is properly oriented on
the
flat of the shaft ..
With the CALL button depressed, pull the
head
drive spool toward the clutch; hold in place
with a light
pressure and check the clutch gap. It
should now be approximately .. 020 inch but not to
exceed •
035 inch.
NOTE: This check is to be made in the area
nearest the setscrew only.
If the check is satisfactory, tighten setscrew
securely. If not, repeat clutch adjustment pro-
cedure.
2.6 Start Switch Location Adjustment
Depress CALL buttonfully. Pull head drive
spool toward clutch for •020-inch gap. Motor
should not
energize to rotate clutch at this point ..
Release CALL button slowly. The head
motor (#37, Fig. 9) must start prior to tips of
clutch (#32, Fig. 9) and the head drive spool
(#36, Fig .. 9) teeth coming in contact with one
another.
NOTE: If the above conditions are not met, the
start switch (#29, Fig. 9) is adjusted by
loosening the start switch mounting screw
(#29A, Fig. 9) and moving the switch for-
ward or backward as required.
2. 7 Clean Recording Head (If Dirty)
Clean
recording head with clean RS-14312
cloth· moistened with KS-7435 dry-cleaning fluid ..
2. 8 Head to Tape Contact & Clearance
With a cartridge installed am CALL button
depressed, the head (#41, Fig. 9)should makefull
contact with the tape between the points of the
fluted spool.
This is observed from the left-hand
side. A very slight gap is permitted at the rear
of the head.
Release the head (#41, Fig. 9) by pushing
the head
actuator (#40D, Fig. 9) toward the front
of the dialer Wlit. A O. 040 to o .. 050-inch gap
should be observed between head
aIXI any point of
fluted spool. Minimum clearance is o. 030 inch.
NOTE: Head alignment is a factory adjustment
and should not be done in the field. Replace
complete head and
bracket assembly if
above requirement is not met.
2. 9 Clean Bottom Pads
Examine pads for dirt and imbeddedforeign
material which may mar desk surfaces.. Clean if
necessary using RS-14312 cloth and KS-15356
dry-cleaning fluid.
2
.1 O Lubrication
Where
necessary to assure free movement
of
parts, lubricate bearing ~d sliding surfaces
with Dow-Corning No. 560 silicone oil (or equi-
valent). Use lubricant sparingly: Excess lubri-
cant can be detrimental to future operation of
dialer since it may migrate to electrical contacts
and/ or attract dust.
,..........., .
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(R S-255. 73, Section D)
MODIFICATIONS
1. Equipment and Material
RS-255.73, Section D, Repair Specification
RS-3580 Diagonal Cutting Pliers
RS-3581 Screwdriver
RS-3583 Long Nose Pliers
RS-14921 Wire Stripper
KS-16346 Ll Soldering Iron
RS-16306 Soldering Iron Holder
RS-16397
Excess Solder Remover
RS-16230 Holder Fixture for Circuit Boards
Solder Rosin Core #18 Gage
KS-6320 "Orange" Stick
Lighting
Fixture with Magnifier and Fluorescent
Lamp (DAZOR Manufacturing Corporation
Model #M-208, M-1408 optional).
TY-RAP #TY-523M Lacing Tape
(Thomas and
Betts Company, Elizabeth,
New Jersey, or Local Distributor).
lA. General Information
This
section describes the procedures for
converting old styleKS-19594 MAGICALL dialers
to the latest standards. These modifications
include
the following changes:
a. Change Rl57 resistor on dialer units
below serial number 950.
b. Add two fiber washers to the mounting
studs for top circuit board on dialer
units below serial number 1950.
c. Replace two delrin gears on metal shaft
with a
delrin gear,one piece delrin gear
and shaft, and a Tinnerman nut.
d. Secure a cork pad to covers on dialer
units below serial number 950.
e. Insert insulating strip between the C301
capacitor and printed board on List 3
power supplies manufactured
prior to
January 1965.
f. On units with serial numbers less than
20,000 -add 220 ohm 1/4 watt resistor
in series with C502 and replace C502
with Sprague 431 P - .1 mfd @ 600V
capacitor, located adjacent to motor
scan· switch 8502. Replace the scan
switch {S502) with equivalent type.
Parts Ordering Information
Above
parts required for modifications may be
obtained as follows: Source
(a) R157
Resistor 47K ohms,
1/4watt±1~, Local Supplier
Allen Bradley Company
Type CB
or Equivalent
R157
Resistor 68K ohms,
1/4 watt± 1~, Local Supplier
Allen Bradley Company
Type CB
or Equivalent
R157
Resistor 1 OOK ohms,
1/4 watt ±10%, Local Supplier
Allen Bradley Company
Type CB
or Equivalent
(b) Fiber Washer per BTL
drawing B-574349
DASA Corp ..
{c) Pinion shaft per BTL
drawing B-575159
DASA Corp.
(DASA #2042)
Gear per BTL drawing
B-575163
(DASA #2047) and
Tinnerman nut #C12044-012.
(d) Cork Pad, per BTL drawing
B-5?3310 DASA Corp.
(e) Insulating Strip per BTL
drawing B-568866
DASA Corp.
(f) Capacitor C502 "Sprague
#31 P .. 1mfd @ 600V" and DASA Corp. or
resistor" 220ohm1/4 Local Supplier
watt, Allen Bradley
type CB" or equivalent.
May be obtained
as an
assembled network, from
DASA Corp. (approx. 1. 06
ea.. network), or as individual
components, obtained locally.
If Sprageu #31 P is not available,
use Thompson Ramo Woolridge
X-663F
or X663RR .1 mfd @600V.
(g) Switch S502 Cherry Electrical
Electrical
Products DASA Corp. or
Part No. E23-20A Local Supplier
Unimax Switch
Part. No. TM13B-4.
NOTE:
B-drawings ref erred to are contained in
the KS-19594 Specification.
If a MAGICALL is modified at a distribu-
ting house and then returned a second time, be
careful not to modify the dialer a second time
(i.e. do not change R157 a second time). You
can tell if this change was made as well as the
fiber washer added by examining for a white dot
on the
front right hand corner of the top circuit
board (FSl).
KS-19594 Dialers returned to DASACorpo-
ration underthe warrantywill be uix:Iated, (except
for modification of motor scan circuit for addition
of 220 ohm
resistor and replacement of C502 ca-
pacitor) on a "no-charge" basis to include the
necessary modifications.
2. Operations
Depending on the serial number or date of
manufacture
all or some of the following modifi-
cations will be required. Remove the housings as
necessary.
The Contract Manager's Organization ad-
vises that since this dialer is strictly a commer-
cial item all costs of modifications are billable
to the customer o
2.1 Replacement of R157 Resistor
Dialer units with serial numbers below 950
must have the R157 resistor changed per the
fallowing
chart.
If present value is 33K ohms change to 47K ohms
If present value is 47K ohms change to 68K ohms
If present value is 68K ohms change to lOOK ohms
7
TCI Library www.telephonecollectors.info

8
Replace Rl57 resistor
Stamp dot here
Fig. 2. Multi Board Assembly -Top View.
Marking
Once
this change has been made, do not
make
it a second time. Mark those that have
been modified in
accordance with Specification
RS-1013.1. Use No. 36 Volgers Opaque Quick
Drying White lnk and a peg
stamp (1/8" dot obtain
locally). Stamp on the front right hand corner of
the
top circuit board.
Extreme care shouldbe exercised when re-
placing the resistor since the conducting paths
are very small and spaced very close together.
2. 2 Add Two Fiber washers
Fig. 3.
/
Insert one fiber washer on
each holding screw between
printed circuit board and
insulator
Multi Board Assembly -Top View.
Two fiher washers must be added to act as
spacers between the printed circuit board and
insulator on dialer Wlits with serial numbers be-
low 1950. Loosen the two screws that hold the
printed board in place. Lift the printed board
and place one (1) washer on each screw between
the printed board and insulator. Then replace
the board and tighten the screws. stamp the
front right hand corner of the top circuit board
per paragraph 2.1 to also indicate that this
change was made.
Fig. 4.
One piece plastic gea r and shall
r
eplaces this gea r and shaft .
Do not change It
th is Is a meta l qea r.
Right Frame Assembly - Inside View.
Remove cartridge. Pry the delrin gear
from the shaft per Figure 5. Use a screwdriver.
Slide the shaft and remain .ing gear from the
Dialer Unit. Discard these two gears and shaft.
2. 3 Replacement of Delrin Gear and Metal
Shaft Assembly
Fig. 5.
Pry gear oft
Asserm le gear and
Tinn r man nut lo
this side of dt.Jle r
unit
Right Frame Assembly - Outside View.
Replace with the one piece delrin gear and
shaft assembly. Slide the other gear over the
shaft. This shaft is keyed. Lock the gear in place
by forcing the tinnerman nut over the shaft.
Replace cartridge.
The manufacturer shipped some dialers
with a metal gear moWlted on the metal shaft. It
is not necessary to modify these dialers.
2. 4 Add Cork Pad to Cover of Dialer Unit
Remove the cover from dialer units with
serial numbers below 950. Peel the backing
TCI Library www.telephonecollectors.info

.. ~
-r
A semb le pad here
1 1-1 12in ch f rom cut ou ll
Fig. 6.
Dialer Unit Cover -Inside View.
from the gummed pad and place the pad 1 ~inches
back from the selector wheel cut out (see BTL
drawing B-568698).
2. 5 Add Insulating Strip to Power Supply
Remove the two screws that hold the printed
board. Rotate the board exposing the underside.
Slip the two straps off the edge of the capacitor.
Then slip the insulatin g strip between the capaci-
tor and printed board. Replace the two straps.
To do this bend a hook in a paper clip and use
this to lift the strap over the capacitor.
2.6 Add 220 ohm 1/4-watt resistor, replace
capacitor C502 am scan switch S502.
RemOYe two screws
and pi vot board
(Dialers with serial nun1bers above 20, 000
or with :i 1/ 8-inch red dot adjacent to the
serial number or nameplate contain this
modification).
See paragraphs 2.61 and 2.62 before pro-
ceeding.
2. 6.1 If no resistor is in series with capacitor
C502 (located by scan button):
a. Remove the C502 capacitor.
b. Connect and solder a 220 ohm 1/4 watt
resistor to SS 02 switch terminal from
which C5 02 was re moved.
c. Connect and solder a new Sprague 31 P,
. lmfd @ 600V, 2()( f capacitor as C502,
to ground terminal from which old C502
was removed.
d. Connect and solder the 220 ohm resistor
and new capacitor together.
Use spaghetti or shrinkable tubing where
necessary to prevent short circuits. Dress
components against dialer frame.
2. 6.2 On dial e rs with serial numbers 9000 to
15, 000 and modified per paragraph 2. 61,
replace S502 (scan switch) with same type.
2. 6.3 stamp 1/8 inch red dot adjacent to serial
number on nameplate to indicate modifi-
cation in 2. 61 and 2. 62 completed.
Sl ide straps ~II
Fig. 7.
Power Supply With Cover Removed " Fig. 8.
Insulating Strip Installation.
(RS-255. 73, Section El
TEST AND ADJUST
(Using RS-16767 Test Set)
1. Equipment and Materia I
RS-255. 73, Section E
RS-2000 Breakdown Test Set
RS-14957 Hewlett Pa c kard Audio Oscillator
RS-16229 Hewlett Packard Counter Model 522B
or equivalent
RS-16767 KS-19594 Dialer Test Set
Glyptal (General Cement 11 90-2)
Alligator Clip Leads 12"
Hewlett Packard Voltmeter
Model #400 or equivalent
2. Electrical Tests
The List 100 MAGICALL dialer is com-
prised of a list 1 Dia ler Unit, and a list 2 Dial-In
Unit, and a list 3 Power Supply. Interconnect all
three of these units. If there is a failure, then
each of the units must be tested separately so
that the unH with th e defect may be isolated.
Individual units may also be tested. Tests for
the list 100 series are in paragraphs 2.2-2.9.
Trouble shoot units failing to meet tests or
cannot be adjusted and not covered by warranty.
9
TCI Library www.telephonecollectors.info

10
2. 1 Set Up Equipment
Plug both the RS-16229 and RS-16767 into
a 110-120
volt outlet and turn each power switch
ono Connect one coaxial lead from the test set to
the start jack on the RS-16229 and the other
coaxial lead to the input jack on the RS-162290
Plug the RS-16767 Test Set yellow cord plug (P4)
into
the RS-2000.
Set the Hewlett Packard #522 coWlter as
follows. These settings will be used to count
pulses.
Frequency Unit
Function Selector
Trigger Input
Display
Time
Manual Gate
Trigger Level
Trigger Slope
CPS-1
Frequency
Com
At a minimum
Open
Both
between +3V and ±1 OV
Left (-) Right ( +)
Plug the MAGICALL Power Supply into the
outlet on the left side of the RS-16767o Connect
the telephone cord from the Dialer Unit to the six
spring contacts on the RS-16767 according to the
color codeo
2o 2 Mute SWitch Test {Click Test)
Set the Click Time-Count Switch on the
RS-16767 to "Click".
Set the A writing space between the window
guide
lines on the MAGICALL. Depres·s Call
Button, record one "0", press the Star Button,
record three more "O"s and press Star Button.
Remove
the Dial-In Unit and play back the num-
ber. Since the Dialer will stop after dialing the
first "0", depress the Star Button to continue
dialing.
The red click lamp shall not light during
this test. Both ShWlt 1 and ShWlt 2 lamps should
be on (K501 ShWlt
contacts closed) during pulsing.
If not, the red click lamp will light. Both these
lamps shall be out prior to pressing the Star
Button to dial the last three "O"s. If ShWlt 1 and/
or Shunt 2 lamp do not operate, troubleshoot
Dialer.
2. 3 Pulse CoWlt Test (O, *, o, o, O)
Set the Click Time-CoWlt Switch to "Time-
Count". Again play back the series of "O"s. The
counter shall indicate 10, 20, 30, and 40. This
verifies that the MAGICALL pulsed correctly o
2.4 Test K502 Relay Pulse Contacts Make and
Break Times
Change the counter settings as follows:
Manual Gate Not
at Open
Function Selector Time Interval
Time Unit Millisecond -100
The remaining settings should be as shown
in paragraph 2.1.
Set the trigger slope switches to - and +.
Again play back the sequence of "O"s.
The COWlter should read between 57. 7 and
64.5 milliseconds.
Set the trigger slope switches to+ and -o
Play back the previously recorded sequence of
"0" s. The c0W1ter shall read between 37. 5 and
40. 7 milliseconds.
2.4-1 Adjustment of {K502) Pulse Contact Make
and Break Times
The Make and Break times are adjusted
independently using potentiometers R501
(M) and R502 (B) respectively, on the back
of the Dialer Unit, page 17.
Remove
the dialer housingo Record the
number "1".
~g clip leads strap test points ~and
~on the top circuit board to the Clialer
Wlit chassis (ground), page 22.
Press the CALL button. The dialer will
pulse continually.. Press the CALL button
to reset the dialer before the head hits the
end of the cartridge.
Set Trigger Slope to Left ( +) Right (- )0
Adjust R501 (M) to give a Make duration of
38.5 ±0. 5
milliseconds .• page 17.
Set Trigger Slope to Left (-) Right (+).
Adjust R5 02 (B) to give a Break duration of
63. 0 ±
O. 5 milliseconds, page 17.
After adjusting either potentiometer apply
a
small dot of Glyptal (General Cement
Catalog number 90-2)to shaft and moWlting
bushing.
Remove
Clip Leads.
2.5 Measure Amplifier Signal Level of tran-
sistor Q201
Remove housing.
Record a series of zeros on an unused line
of the tape cartridge.
Disconnect Dial -In Unit (List 2).
Press the CALL button, and using either
an oscilloscope or a high impedance millivolt-
meter, measure the amplitude ofthe signal at the
collector of transistor Q203 (usually in the range
100to150millivoltspeak-to-peak). Make connec-
tion to negative terminal of C202 (CircuiTrace
point llJ). Ref er to Fig. 16 for location of
CircuiTrace point, page 21.
Note this amplitude.
Remove the tape cartridge and connect the
output of a 10 c/ s oscillator (H.P. 200 series or
equivalent) between ground and through a 220K
resistor to the collector of Q201 (CircuiTrace
point Im), page 2L
Adjust the output of the oscillator to give
a
signal amplitude atQ203 collector (CircuiTrace
point llJ) of 1/3 that previously observed, page 21.
TCI Library www.telephonecollectors.info

Turn R222 counterclockwise (as seen from
wiring side of board), page 20.
Operate CALL button, and then turn R222
clockwise until the Dialer just pulses smoothly.
Do not turn R222 further than this point. (No
damage would occur, but the amplifier would be
more sensitive than the design center.) This ad-
justment is more easily made if R222 is rocked
back and forth over the threshold region.
It may be necessary to reoperate the Call
Button if the dialer does not pulse for one second
or more, and the motor control circuit times out.
After
adjusting the potentiometer, apply
dot of Glyptal (General Cement Catalog number
90-2) to the shaft and mounting bushing.
2.6 Preparation for Remaining Tests and
Drive Mechanism Test
Connect the List 2 Dial -In Unit to the
MAGICALL:
press Call Button, dial four "1" 's,
press Star Button, and remove the Dial -In UrU.
Scan to the
11
Z11 end of the writing tape by pressiI~
the Tape Drive Key. Return to the "A" end by
pressing the Tape Drive Key in the reverse
direction. The tape should move freely in both
directions. Place the "A" space between the
window guide
lines using the selector wheel. The
tape should not turn until the wheel is depressed.
2. 7 Interdigital Time Test
Set the Trigger Slope switches to + and -.
Playback this sequence of four ttpt 's. The counter
should read 800 ± 200 milliseconds. If not, trouble-
shoot Dialer and/ or Dial -In uni ts.
2.8 Erase and Rerecord Test
The settings on the counter should be the
same as shown in paragraph 2.1. Playback the
previously recorded series of
11 111
's. The correct
indication is 1, 2, 31 4. If not, troubleshoot Dial.
2.9 Breakdown Test
This test must be performed on all Power
Supplies. It can be performed with a Dialer Unit
either connected to or disconnected from the power
supply. Be
sure the power cord from the Power
Supply is connected to the outlet on the left side
of the RS-16767. Press the Breakdown Buttons
on
either side ofthe RS-16767. If RS-2000 Buzzer
sounds, troubleshoot Power Supply.
2"10
Lamp Test
The List 101 Dialer is for military appli-
cations. It is equipped with a lamp assembly for
illuminating the tape viewing window. This per-
mits operation in areas of subdued lighting. The
lamp should light when the List 3 Power Supply
is connected to the Dialer Unit and 110-120 V AC
outlet. Replace lamp if necessary, and/ or trouble-
shoot lamp supply circuit.
2.11 Test List 2 Dial-In Unit
If trouble is suspected with a Dial-In Unit,
or if a loose Dial-In Unit is returned from the
field, test it in conjunction with a known good
list 1 Dialer. Connect the telephone set cord to
the
spring terminals on the RS-16767 according
to the color code. Connect the cord that normally
would be connected to the Power Supply to the re-
maining four spring terminals according to the
color code. Turn MAGICALL Supply Switch to
"ON.'' Set the counter as shown under paragraph
2.1. Press Call Button, dial four no" 's into the
Dialer Unit, press Star Button and play back this
number. The correct indication shall be 10, 20,
30, and 40. Although the Dialer Unit will out
pulse while it is recording a number, it is still
necessary to remove the Dial- In Unit and play
back the number. If the Dial-In Unit generates
the right number of pulses but does not generate
them at the right speeds, the Dialer Unit may or
may not out pulse when the number is picked up
from the tape and played back.
Troubleshoot if necessary. See para. 5 in
"Troubleshooting" section.
2.12 Test the Dialer Unit
If trouble is suspected with a List 1 Dialer
Unit, or if a loose Dialer Unit is returned from the
field, test it in conjunction with a known good
Dial-In Unit. Connect the telephone set cord to
the spring terminals on the RS-16767 according
to the color code. Connect the cord that normally
wouldbeconr1ected to the Power Supply to the re-
maining four spring terminals according to the
color code. Turn Dialer Power Supply switch to
"ON." The test equipment should be set as shown
in paragraph 2.1. Perform tests in paragraph
2.2 through 2.8.
2.13
Power Supply Test
This test need only be performed if a loose
List 3 Power Supply is returned from the field.
Remove the cover from the Power Supply. Plug
the Power Supply into a 120 volt outlet. If the
voltage
from the outlet is not approximately 120
volts, use a RS-14262 Variac to adjust that volt-
age. Set its voltage for 120 volts. Measure the
voltage across the following terminals with an
RS-16038 Triplett Meter. The nominal voltages
should be the following. Nominal is defined as
±10%.
Between RED and GRN
Between BLK and YEL
2.14
Disposition
Power Supply Not
Connected to
Dialer
29 volts (DC)
29
volts (AC)
Be sure all test codes have been erased
from the tape. Run the writing tape to the begin-
ning (above the A end). Back the tape off 4 lines.
This will prevent the tape head from causing wear
on the usable area of the tape.
Send good MAGICALLS for packing. Pack-
ing material is available from DASA. Leaflet
DASA number MIB-A65 shall be packed with List
HlQ, List lOlj List 102, and List 103 dialers.
Troubleshoot defective units.
11
TCI Library www.telephonecollectors.info

(RS-255. 73, Section F)
TROUBLESHOOTING
1. Equipment and Material
Use equipment listed in Repair Section.
RS-16767
Test Set
RS-16038 Triplett VOM meter or equivalent
RS-16640 DuMont Oscilloscope or Fairchild
Model 701 or equivalent
RS-14731 RCA Master Voltrohmyst Model WV98B
or equivalent
RS-255.73, Sec. F Repair Specification
2. General Information
Refer to circuit description CD-99436-01
and
schematic drawing onPage 28 for detailed in-
formation of dialer operation. The Circuit Des-
cription contains both a general description of
operation and a detailed description of operation
which should be understood before attempting
troubleshooting techniques. Oscilloscope wave-
forms are shown on Page 25.
Figure 9 is an exploded view and shows
the
assembly of the Dialer Unit.
Table I Possible Troubles and Causes
3. Theory of Operation {See CD-99436-01 for details)
12
3.1 Record Function
a.
Dial-In-Unit connected to Dialer Jack J501
b. CALL Button operated once
3.1-1 Rotary Dial-In-Unit at normal (unoperated)
a. 8402 Dial Pulsing Contacts closed
b. 3 milliampere erase current through
Magnetic Head H501
3.1-2 Call Button operated
a. Start Switch S501 opens momentarily
which operates;
b. Head Motor Control Flip Flop circuit
and Head Motor Control Timer circuit
c. The Head Motor Control F-F operates
K501 Muting Relay which applies 28VAC
to Head Motor M501
d. Approximately L4 seconds after the
Call Button has been released, the Head
Motor
control timer will reset the Head
Motor
Control F- F and stop the Head
Motor.
3.1-3 Dial rotated Off-Normal closes 8403 Dial
Shunt Contacts.
a. M401 Synchronous dial motor (low
torque) operates by 28VAC through S403
contacts.
3.1-4 Rotary Dial released
a. S401 Dial Start Switch closes and
actuates Head Motor Control F- F with
negative pulse.
b. K501 Muting Relay operated by Head
Motor
Control F- F through transistor
Q104.
c. M501 Head Motor operates by 28V AC
through K501 contacts.
d. H501 Record Head moves by M501 Head
l\'.Iotor.
e. E401 Wait Lamp lights through K501
contacts.
L S402 Pulse Contacts eneode number of
pulses on magnetic tape corresponding
to digit dialed. This is accomplished by
changing the level of direct current
through H501 head.
g. Rotary dial returns to normal position;
g-(1) WAIT Lamp extinguishes and Head
stops approximately 0.6 second
(interdigital time) after rotary
dial stops due to a pulse generated
by Head Motor Control Timer cir-
cuit.
3.2 Access Period (Star Button)
Same as Record function except:
a. H501 Head does not reset to index posi-
tion.
3.3
Call Function
a. Dial - In- Unit disconnected from Dialer
3.3-1 Call Button depressed
a. H501 Head comes into contact with
Magnetic Tape.
b. Head returns to its start position
by having the
clutch released.
3.3-2 Call Button released
a. Head driving clutch engages with
spool.
b. S501
switch closed by switch
actuator"
c. Head Motor Control F- F operated
by S50L
d. K501 Mu ting Relay operated by
Head Motor
Control F- F.
TCI Library www.telephonecollectors.info

e. M501 Head Drive Motor operates
through K501 contacts to 28VAC.
f. K501
also removes short circuit
across K502 pulsing contacts.
3.3-3 Head H501 moves across Magnetic
Tape.
a. Head detects recorded information
{magnetic flux reversals}.
b. Amplifier amplifies Head output.
c. Schmitt Trigger shapes amplifier
output into rectangular pulses.
d. Amplifier output pulses activate
Pulse Reconstitution Circuit com-
prised of~
d-(1) 40 millisecond Flip -Flop
(Make
time)
d-(2} 60 millisecond Flip -Flop
operates K502 Pulsing Re-
lay {Break time)
d-(3) Auxiliary Flip-Flop (adjusts
Make and Break times to 10
PPS rate)
4. Possible Major Troubles and Defects
TABLE I
Trouble
WAIT Lamp E401 doesn't extinguish
Pulsing Relay K501 pulses continuously
Doesn't Record or Erase
Head doesn't stop 1.4 seconds after
Call Button released during Record
function
RS-16767
Click Lamp lights or Shunt
Lamps #1 & #2 do not operate
Dial-In-Unit pulse speed incorrect
Cannot adjust Break time or Make time
Head doesn't move
Doesn't pulse out
0.6 second interdigital time incorrect
Doesn
1 t
scan
e. Head Motor Control Timer stops
Head Motor if:
e-(1) No signal is detected by
Head 3.5
seconds after Call
Button is released.
e-{2) No signal detected by Head
1.0 second after last digit is
generated.
3.4 Scan Function
a. Depress &an Button
3.4-1 The Idler Gear engaged with the Drive
Gear will determine in which direction
the Tape will scan.
3.4-2 Operates S502 which applies 28V AC to
Scan Motor (M502).
Defects
Auxiliary Flip Flop,
Head Motor Control Timer(See para. 6)
Auxiliary Flip-Flop, 60 Millisecond
Flip-Flop, 40 Millisecond Flip-Flop
Dial - In- Unit (S402),
Head not in contact with Tape
Auxiliary F- F,
Head Motor Control Timer (See para. 6)
K501 doesn't operate
Dial Motor M401 doesn't operate
Pulsing Timer
Head Motor M501,
Relay K501,
Head Motor control F- F,
Start Switch S501
60MSEC
F-F
K502 pulsing relay doesn't record
Head Motor Control Timer (See para. 6)
Scan Motor (M502)
Scan Button Switch (S502)
13.
TCI Library www.telephonecollectors.info

5. Dial-In Unit Test
Scope Settings
Vertical Amplifier .. 1V/cm, DC coupled
Slope ........... Negative
Coupling
........ AC slow
Source . . . . . . . . . . Internal
Level .......... Adjust as necessary
Time Base ....... 10 msec/ cm
5.1-1 Remove cartridge
5.2-2 Plug Dial-In Unit into Dialer Unit
receptical (J501).
5.3-3 Connect scope ground lead to base
tray of Dialer Unit.
5.4-4 Connect probe to anode of CR201
(CircuiTrace point ).
5.4-5 Dial Zero.
Requirement -Upon release of the dial, a
100 msec square wave should appear on the
scope. This pattern should be clean and
have the shape shown below. The total time
should not drift more than ± 1 msec (illus-
trated below).
0 --------- ---------
14
40MSEC ~
NOTE: The 40 msec Break time should be set
at 40 msec ±2 msec and the 100 msec
period should be set at 100 msec 1.5
msec.
If the 100 msec period is incorrect, re-
place the dial.
The 40 msec Make time is adjusted as
follows:
(a)
If it is more than 40 msec, re-
duce the gap between the open
pulsing contacts.
(b) If it is less than 40 msec, widen
the
gap between the open pulsing
contacts.
6. Motor Control Ti ming Circuit Test
6.1 General - If a faulty head motor control
timer unijunction transistor (Q111) or head
motor control timing capacitor (C108) is
replaced, it is necessary to check the 1.1
second (search-in) time. The following
procedure outlines the 1.1 second time test-
ing and adjustment.
Scope Settings
Vertical Amplifier .. 10V/cm
Slope . . . . . . . . . . . Negative
Coupling
........ AC
Source .......... Internal
Level ........... Adjust as necessary
Time Base ........ 2 sec/cm
6.1-1 Connect scope ground lead to base
tray of Dialer Unit.
6.2-2 Connect probe to Test Point
6.3-3 Remove cartridge and Dial-In Unit.
6.4-4 Press CALL button.
Requirement -Scope should read between
1.0 and 1.2 seconds (illustrated below).
0 ----------1
~1.lSEC~
6.2 1.1 Second Time Adjustment
High
Low Reduce
value of R154
Increase value of Rl54
-'
TCI Library www.telephonecollectors.info

9. Dialer
TCI Library www.telephonecollectors.info

-
C401
R402
R403
M401
E40
S402
S403
~
I
CORD
P401
COVER
ASSEMBLY
Fig. 10. Disassembled Dial-In Unit - Parts Location.
R502 R501 M501 R504 CR501 C501 R503 5501 K501 CR502 M502 5502
Fig. 11. Partially Disassembled Dialer Unit - Chassis Parts Location.
17
TCI Library www.telephonecollectors.info

18
KS-19 94 L8 POWER CORD
Fig. 12. Power Supply - Parts Location.
QlOl Ql02 CR103 CR104 Cl05 CRHX> CR107 Cl07 Cl03
QlO
Cl02 Cll4 CR118 CR120 Qll3 Clll CR117 CR116 Ql09 Cl09
Cl06
Cll6
CR 1 15
Cl08
CR112
CR 1 14
Cll2
CRlll
CR119
CllO
QllO
Ql08
CR105
Fig. 13. Multi Board Assembly (FSll -Transistor, Capacitor and Diode Location.
TCI Library www.telephonecollectors.info

-
RI04 Rl03 Rl70 RI67 Rl38 Rl37 Rl39 RI42 RI40 RI44
Rll9 RI20 RllB
Rl56
Rl02
Rl06
RIOS
RlOl
Rl41
Rl55
Rl35
Rl53
Rl52
Rl71
Rll4
Rl36
Rl66
Rll3
Rl46
Rlll
Rll2
Rl09
Rl08
Rl07
RllO
Rl58 Rl57 Rll5
RI22
RI21
Rll6
R117
RI49
Rl30
Rl32
Rl6S
RlS9
Rl31
Rl34
RI23
RISI
· RI69
Rl64
RISO
Rl26
Rl28
Rl24
RI25
RI27
Rl47
Rl33
Rl61 Rl68 Rl29 Rl62 Rl60 Rl48 Rl63 Rl43
Fig. 14. Multi Board Assembly(FSU - Resistor Location.
19
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20
R210 R218 Q207 R220
0205
R211
R201
R206
R205
Q204
Q201
R 204 -- -+-#Ii••'-
. SiJ!iiiiif: :A
Q203
CR202
Q202
R202
R228
C201
R227
R20Q
Fig . 15. Amplifier Printed Circuit Board (FS2) - Parts Location.
R226
Q208
R214
R207
C203
TCI Library www.telephonecollectors.info

* SOURCE VOLTAGE
-
Fig . 16. Amplifier Printed Circuit Board (FS2) - CircuiTrace Points &through EZJ .
21
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