Wurlitzer 3020 Instruction Manual

I
I
i

SERVICE INSTRUCTIONS
AND
DARTS CATALOG
for
WALL BOX MODEL 3020
IMPULSE STEPPER MO:JEL 219
IMPULSE TRANSMITTER MODEL 215
IMPULSE RECEIVER MODEL 216
COMMERCIAL PHONOGRAPH DIVISION
~ lite RUD0 LP" WURLITZER C0 MPA NY
N 0 R T H · T 0 N. A W A N D A. N E W Y 0 R K

DEDI C-A T I 0 N
This manual is dedicated to Wurlitzer Factory-
Approved Music Merchants and their Servicemen,
through whose cooperation and continued loyalty
the unparalleled public and location owner accept-
ance
of Wurlitzer equipment has been maintained .
•
Be assured that the same high standards which
have done so much to solidify Wurlitzer's position
in the music world, will be continued as Wurlitzer
Extends Its Leadership . •
It is our sincere desire that this Manual will
materially assist you in gaining and holding loca-
tions by prompt, complete and efficient service.
The Rudolph Wurlitzer Company
North Tonawanda, N. Y.
- - ---- -- ~

. ;:-..
INTRODUCTION
The instructions contained in this Manual have
been prepared by the Wurlitzer Service Department
to assist the Serviceman in becoming familiar with
the Models 3020 Wallbox, 219 I~pulse Stepper,
215 Impulse Transmitter and 216 Impulse Receiver.
They are presented for your convenience and ref-
erence in the firm belief that a better understanding
of the working principles and required maintenance
of the wallbox will result in increased operating
profits and more satisfactory performance of your
equipment.
All details of the broad subject of service cannot
possibly be covered in this Manual. The Wurlitzer
Service Department will be glad to assist you with
any special problems, through Field Representatives,
Distributors or the . Wurlitzer Factory.
If you will submit problems, advice and suggested
remedies, you will enable us to improve our service
to you through our periodic "Service Slants" bul-
letins and through the medium of this Manual.
Remember, your ideas,will help others ... and their
ideas will help you.
Your comments to:
Milton A. Bartels
General Service Manager
The Rudolph Wurlitzer Company
North Tonawanda, N.Y.

Service lnstrudions
CONTENTS
SECTION
I General Description . . ..
Cycle of Operation for Wireless Wallbox
Introductory . . . . . • . • • .
Cycle
of Coin Registration . . . . .
Cycle
of Selection . . . . . . . . . .
Operation of Model 215 Impulse Transmitter
Operation of Model 216 Impulse Receiver. •
Operation of Model 219 Impulse Stepper .
Introductory . . . • • . . . . . •
Cycle
of Operation . . . . . . . .
Cycle
of Operation for T~ree Wire Wallbox
Introductory . . . . . .
Cycle
of Coin Registration .
Cycle
of Selection . .
Coin Selector Mechanism
II Installation
Three Wire Installation.
Two Wire Installation •.
Wireless Installation . • • •
Tuning of Model 216 Impulse Receivers . . • . . .
Changing Frequency of Model 215 Impulse Transmitter ·
Use of Bridging Condenser No. 39851 ·
III Adjustments. .. • • •
IV
Model 3020 Wallbox •
Coin Selector Mechanism ' Adjustment.
Coin Gate Adjustment
Coin Switch Adjustment
Selector Switch Locking Bar 'Adjustment
Accumulator Adjustment
Selector Button Relay Adjustment
Coin Relay Adjustment • •
Model 219 Impulse Stepper
Stepper Contactor Arm Adjustment
Stepper Operating Arm Adjustment
Stepper Switch Adjustment . ,
Release Latch Relay Adjustment •
Maintenance
Lubrication
Wall box
Impulse Stepper
Cleaning . , •
•
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Service Instructions
LIST OF ILLUSTRATIONS
FIGURE
TITLE
PAGE
1 Five
Cent Coin Registration Schematic 1
2
Ten Cent Coin Registration Schematic 2
3 Twenty-Five
Cent Coin Registration Schematic . 2
4
Functional Schematic Model 3020 Wallbox, With Model 215 Transmitter . 4
5
Model 3020 Wallbox Schematic . . . . . . . 5
6
Model 219 Impulse Stepper and Model 2i6 Impulse Receiver Schematic 6
7
Wallbox Tuning . Switch in "TUNE" Position. . . · . 7
8
Receiver No. 1 Transformer Switch in "N" Position 7
9 Five
Cent Coin Registration Schematic 9
10
Ten Cent Coin Registration Schematic . . 9
11 Twenty-Five
Cent Coin Registration Schematic 1o
12
Model 219 Impulse Stepper Schematic 11
13
Coin Selector Mechanism . 12
14
Setting Frequency Switch . 14
/''" ""'""' '
15
16
Installation of Wireless System on Power lines Separated by Individual Watt-Hour Meters 14
Installation of Wireless System on Power lines Using Three Wires 14
17
Coin Selector Mechanism Adjustment 15
18
Coin Gate Adjustment 16
19
Coin Switch Adjustment 16
20
Selector Switch locking Bar Adjustment 1 7
21
Accumulator Adjustment 17
22 Coin Relay 17
23
Stepper Contactor Arm Adjustment . 18
24
Stepper Operating Arm Adjustment 18
25
Stepper Switch Adjustment · 19
26
Release latch Relay Adjustment 19
27
Model 219 Impulse Stepper lubrication .20
28
Model 3020 Wallbox lubrication . 21

Service Instructions
SPECIFICA liONS
MODEL 3020
Streamlined, Highly
Polished, all metal
... Picks up and re-
flects surrounding
lights , giving added
Eye-appeal ... Quick-
ly converted from
Three Wire to Wire-
less by merely plug-
ging in a Model 215
Transmitter and a
Line
Cord.
13-i / 4" High-S-3 / 4" Deep-9" Wide-Packed 28·1/ 2 lbs.
Single drop slot for 5, 10 and 25¢ coins to standard
ty pe slug rejector assembly. Credits banked on ac-
cumulator in wall box through positive motor-driven
coin register.
Three Wire System requires no connection to power
line .·May be converted to wireless or two wire system.
IMPULSE STEPPER
MODEL 219
7 -1 /2" High- 7- 1/ 4" Deep- 9-1/2"
Wide-Packed 20 lbs.
Selenium Rectifier used
in place of tubes
assures
long trouble free life and oper·
ating stability.
Single cable
and multi-wire connector
carries circuits to ]unction Box.
Fuses
and terminal strip for Wallbox
line accessi ble at front door of phono-
graph.
115 volt, 60 cycle A. C.
IMPULSE TRANSMinER
MODEL 215
2- 3/ 4" High-2-1 /4" Deep-7" Wide
-Packed 1·1 / 2 lbs.
A plug-in unit ; no adjustment required
as frequency is fixed through use of
crystal · controlled circuit. Various fre·
quencies available to fulfill local
re·
quirements. .
A
6V6GT and 6X5GT tube used. One
Transmitter required for each Wireless
Wallbox . May be ordered separately.
IMPULSE RECEIVER
MODEL 216
6" High-5-1 / 4" Deep-6-1 / 2" Wide
-Packed 4-1/ 2 lbs.
A6SK7,6SQ7,6SN7GT and 5Y3GT / G
tube used in each receiver . A 6U5 / 6G5
tube installed for tuning, may be moved
from one unit to another .
All circuit connections
made by plugging
the Impulse Receiver i nto the Impulse
Stepper.

Service Instructions
Section I
General Description
SER VI C E~
I-NSTRUCTIONS
SECTION I
GENERAL
DESCRIPTION
CYCLE OF OPERATION FOR WIRELESS WALLBOX
INTRODUCTORY
The Wurlitzer Wireless Remote Control System
provides for transmission of pulses over 60 cycle wir·
ing circuits from wallboxes to the phonograph.
The source of the signals is a transmitter in the
wallbox which sends out radio frequency pulses. The
device which responds to these signals or pulses is
the radio impulse receiver, located in the phonograph.
The receiver actuates the stepper, which in turn sets
up the circuit required for obtaining the desired se-
lection on the phonograph.
Generally, external wiring is not required with the
Wireless Remote Control
System; wallbo:ices are sim-
ply plugged into the elec·
the coin relay closes the motor is started through con-
tacts 3
and 4, the register circuit is completed .through
contacts 7 and 8 and the selector circuit is isolated
through contacts 5 and 6. When the coin relay is
energized, contacts 5 and 6 break the selection ci~cuit
while the coins are being registered. ·
The coins are held on the coin switch by the coin
gate, as the coin disc contact rotates in a clockwise
direction from the at rest position . The coin swi tch ,
which is still closed, is disconnected from the coin
relay circuit ( Segment A of coin disc) and connected
into the accumulator coil circuit ( Segment B of coin
tric wiring outlets and the
receiver is plugged into
the stepper in the phono·
graph.
TO SELECTOR SWITCHES
CYCLE OF COIN
REGISTRATION
The coin disc contact
arm in its ~ rest position,
sets up a circuit for the 54
or 10¢ or 254 coin switch
and the coin relay. When a
coin is inserted it passes
through the slug rejector
and falls against the " coin
switch. The coin switch
closes, rhus closing the coin
relay. (See Figures 1, 2 and
3.) This relay interlocks
through contacts 1 and 2
until near the end of the
revolution when the release
switch opens it. When
5¢
COIN SWITCH
COIN
RELAY
TO SEL PLATE
TO
117 v.
TO MOTOR
TO
24 " ·
Figure l-Five Cent Coin Registration Schematic
•
1

Section I
General Desc;ription Service Instructions
TO SELECTOR SWITCHES
10¢ COIN SWITCH
COIN
RELAY
COIL
TO SEL. PLATE
TO SEL. BUTTON RELAY
ACCUM. SWITCH
TO
117 v.
TO MOTOR
TO
2.4 v.
I
disc). If a quarter is insert·
ed, six
24 volt A.C. pulses
are sent to the accumulator
coil
moving the ratchet
wheel six teeth. (See Figure
3.)
If a dime is inserted,
three 24 volt A.C. pulses
are
sent moving the ratchet
wheel three teeth. (See Fig·
ure 2.)
If a nickel is in-
serted, two 24 volt A.C.
pulses are
sent moving the
ratchet wheel two teeth.
(See
Figure 1.) After the
money is registered, the
coin gate opens through
the action of a cam con•
trolled by
the motor . This
allows· the coin to drop in-
to the cash box, thereby
opening the coin switch.
Further action of the cam
is immediately in effect to
actuate
the cancel lever,
canceling
the ratchetwheel
one tooth. This leaves five
registrations if a
quarter
has been inserted, two
registrations if a
dime has Figure
2-Ten Cent Coin Registration Schematic
2
TO SEL . BUTTON RELAY
TO SELECTOR
SWITCH£~
ACCUM. SWITCH
8
A /;: :•\
\\
\
I I
'- ----- __ _;
CONTACT
PLATE
·COIN
REGISTER
2 5¢ COIN SWITCH
COIN
RELAY
COIL
INTERLOCK
~-o-'l~:KI
MOTOR __ ~w-7-~~~-·T_O __ M __ O•T~OR
ISOL. REG.~~i--~..J
SEL . REG.
TO SEL. PLATE
TO
117 V.
TO
24 v.
Figure 3-Twenty-Five Cent Coin Regipration Schematic
I
••
been inserted, or one regis-
tration if a nickel has been
inserted. Near the end of
the cycle the release switch
rotates to its. open segment,
releasing
the coin relay.
The full q.cle switch keeps
the -' moio ~
1
running until
the open segment is reach-
ed, thus
stopping the mo-
tor.
When th:e motoc stops,
the contact arm is Ill rest
on contacts H and F of the
contact disc. (See Figure 4.)
After a nickel; dime or
quarter has been registered
on the ratchet wheel, the
accumulator switch is clos-
ed.
·The contact arm, at
rest on disc contacts H and
F, completes the circuit
through the .accumulator
switch to energize the se-
lection
button relay coiL
This relay remains ener-
gized until released by the
release switch, at the time
it · reaches the open seg-
ment.
The wallbox is now
ready for a selection.