Suzohapp SCAN COIN SC 303 User manual

013447-101_rev-07
SCAN COIN SC 303/313
Coin Counters
Service Manual

Table of Contents
SC 303/313
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Contents
1 General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Declaration of Conformity. . . . . . . . . . . . . . . . . . . . 1
1.2 Environmental Compliance . . . . . . . . . . . . . . . . . . . 1
1.3 Responsibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.4 About this Document . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.6 Abbreviations/Acronyms . . . . . . . . . . . . . . . . . . . . . 2
1.7 Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.8 Software Version . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Hazard Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Installation, Service and Maintenance . . . . . . . . . . . . 3
2.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Warning Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3 Positional References . . . . . . . . . . . . . . . . . . . . . . . 6
3.4 Machine Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.5 Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . 6
3.6 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Installation Requirements . . . . . . . . . . . . . . . . . . . . 8
5 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Mechanical Construction. . . . . . . . . . . . . . . . . . . . . 9
5.2 Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.1 Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.2 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.3 Functional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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7 Disassembly and Assembly . . . . . . . . . . . . . . . . . . . . . . 12
7.1 Exchanging Fuses . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2 Plastic Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.3 SC 313 Hopper Unit . . . . . . . . . . . . . . . . . . . . . . . 14
7.4 Coin Disc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.5 Exchanging the Out-feed Belt . . . . . . . . . . . . . . . . . 16
7.6 CPU Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.7 PSU Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8 Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.2 Mechanical Checks . . . . . . . . . . . . . . . . . . . . . . . . 20
9 Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1 Coin Disc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.2 Out-feed Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.3 Channel Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . 24
9.4 Coin Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.5 Master Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.6 Program Version . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10.1 Motor Stops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10.2 Removing a Coin Blocking the Coin Exit. . . . . . . . . 26
10.3 Troubleshooting Table . . . . . . . . . . . . . . . . . . . . . . 26
11 Circuit Diagrams and Layouts . . . . . . . . . . . . . . . . . . . . 28
11.1 Electrical Interconnection Diagram . . . . . . . . . . . . . 28
11.2 PSU Board Layout. . . . . . . . . . . . . . . . . . . . . . . . . 30
11.3 PSU Board Circuit Diagram . . . . . . . . . . . . . . . . . . 32
11.4 CPU Board Layout . . . . . . . . . . . . . . . . . . . . . . . . 36
11.5 CPU Board Circuit Diagram . . . . . . . . . . . . . . . . . 37
11.6 CH 45 Control PCB Layout . . . . . . . . . . . . . . . . . . 38
11.7 CH 45 Control PCB Circuit Diagram . . . . . . . . . . . 39
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12 Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
12.1 Top Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
12.2 Bottom Cover Assembly . . . . . . . . . . . . . . . . . . . . . 41
12.3 Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
12.4 Main Plate Assembly. . . . . . . . . . . . . . . . . . . . . . . . 43
12.5 Thickness Guide Block . . . . . . . . . . . . . . . . . . . . . . 44
12.6 Feed Mechanism Assembly. . . . . . . . . . . . . . . . . . . . 45
12.7 Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
12.8 Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
12.9 SC 313 Hopper Unit . . . . . . . . . . . . . . . . . . . . . . . . 49

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General Information
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1 General Information
SCAN COIN AB reserves the right to revise and improve its
products as it sees fit. This publication describes the product at the
time of publication and may not reflect the product at all times in
the future.
This publication, or parts thereof, may not be reproduced in any
form, by any method, for any purpose other than the purchaser’s
personal use, without the express permission of SCAN COIN AB,
Sweden.
1.1 Declaration of Conformity
We, SCAN COIN AB, Malmö, Sweden, declare under our sole
responsibility, that the product in this manual, to which this
declaration relates, is in conformity with the following standards or
other normative documents:
• EN 60 950-1:2006+A11:209 + A1:2010;
• EN 61000-6-1 (2007)
• EN 61000-6-3 (2007)
following the provisions of Directive:
• Low Voltage Directive 2006/95/EC
• EMC Directive 2004/108/EC.
1.2 Environmental Compliance
Note! If the equipment contains batteries or accumulators, dispose of these
separately according to local requirements.
WEEE Directive (valid in the EU only)
Waste Electrical and Electronic Equipment Directive 2002/96/EC.
Equipment marked with this symbol must be treated separately and
in accordance with the local legislation that requires proper treatment
of, recovery and recycling of used electric and electronic equipment.
Contact your SCAN COIN representative for further details.
1.3 Responsibility
The supplier of the equipment accepts no responsibility for injury or
damage to personnel or equipment, if the equipment is altered in any
way or used in a manner for which it was not intended at the time of
delivery.
If the conditions for use of the equipment are changed, the supplier
must be contacted or the declaration of conformity is invalidated.

General Information
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1.4 About this Document
This technical handbook is valid for SC 303 and SC 313. It provides
information required by qualified personnel to carry out repairs,
maintenance and servicing.
Throughout this manual the instructions given apply to both
machines unless otherwise stated.
1.5 Revision History
1.6 Abbreviations/Acronyms
1.7 Related Documents
1.8 Software Version
This document describes machines with software versions up to and
including version 4.03
Revision Major Changes
07 Updated DOC and spare parts list.
06 Changed logo, updated spare parts.
05 Corrected image “12.7 Drive Assembly” on page 46.
04 Added information about connector, CPU and PSU
boards in the spare parts list see “12.8 Electronics” on
page 47. Updated spare parts list
03 Updated Spare parts list.
02 Corrections in spare parts list.
01 General reveiw. New template. WEEE-directive.
Abbreviation Description
AC Alternating Current
CPU Central Processing Unit
DC Direct Current
ESD Electrostatic Discharge
PSU Power Supply Unit
SC SCAN COIN
Document Document number
(Main number)
User’s Guide 013264-000
Service Manual, including:
•TechnicalHandbook
• Spare Parts List
This document

Safety Precautions
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2 Safety Precautions
2.1 Hazard Notices
This handbook contains hazard information which must be
regarded by all users.
The hazard information is presented as a warning or a caution, as
follows:
WARNING!
Warnings indicate a potential hazard to the health and safety of
users. They clearly state the nature of the hazard and how to avoid it.
They appear at their points of application in this handbook, but with
different illustrations.
Caution! Cautions indicate a potential hazard to the physical integrity of the
machine, but not a danger to personnel. They clearly state the nature
of the hazard and how to avoid it. They appear at their points of
application in this handbook.
Note! The servicing information and instructions contained in this
technical handbook are for use by qualified personnel only.
Any unauthorized attempt, by unqualified persons, to service or
repair the machine, will nullify the equipment warranty.
2.2 Installation, Service and Maintenance
WARNING!
Risk of electric shock! High voltage inside the machine may be fatal
for anyone in contact with it. Always switch OFF and disconnect the
machine from mains supply before disassembling.
Caution! Electrostatic discharge (ESD) may damage the electronic components.
All electronic circuit boards in the machine are sensitive to ESD.
To prevent damage from ESD, always observe the following
precautions:
• Always wear a suitably grounded wrist wrap — make it first on,
last off.
• An unboxed or unbagged board is an unprotected board!
• Keep non-conducting materials (for example sleeves, ties, scarves)
away from electrostatic safe work areas.
!

Safety Precautions
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2.3 Operation
WARNING!
Risk of tipping!
The machine may fall over during bagging. Always make sure that the
bag can rest on a shelf. Maximum weight to avoid tipping is 10 kg (22
lbs) for SC 303 and 20 kg (44 lbs) for SC 313.
WARNING!
Risk of jamming!
This machine contains moving parts and sharp edges. Always be
careful. Do not touch the components inside the machine while it is
running.
WARNING!
Risk of impaired hearing.
Use ear protectors while the machine is running.
2.4 Warning Labels
The following warning labels are attached to the machine.

Introduction
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3Introduction
3.1 General
The SC 303 and the SC 313 are virtually identical in appearance and
operation.
The difference between the two models is that coins are fed into the
SC 303 by means of a tray with the capacity to hold approximately
2,000 coins whereas coins are fed to the SC 313 by means of a
hopper with a capacity of 3 litres which makes it easier to count high
volumes of coins.
The machines can be programmed to count any coin or token with
diameter in the range 14 to 34 mm (0.55 to 1.30") by means of two
selector knobs - one for diameter (4) and one for thickness (3). Both
machines are microprocessor controlled and all data is stored in non-
volatile EEPROM so there is no need for battery back-up of the
power supply.
Coins are loaded into a tray (SC 303) or hopper (SC 313) (6). When
the MOTOR ON/OFF key is pressed, the coins are automatically
fed from the hopper into the machine.
The number of coins counted by the machine is shown on a digital
display (2) on the front panel. It is important to note that the display
shows the number of coins counted - not the currency value of the
coins.
Counted coins can be placed directly from the coin outlet (6) into
collecting receptacles such as boxes, bags or tubes. Standard
accessories are available to connect bags or tubes to the coin exit.
Damaged or unidentified coins are sent to the reject tray (5).
1Coinhopper
2 Display on control panel
3 Thickness selector
knob
4 Diameter selector knob
5 Reject tray
6 Coin outlet
SC 313
1
2
5
3
4
6

Introduction
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3.2 Controls
Refer to the User’s Guide , see “1.7 Related Documents” on page 2 for
information.
3.3 Positional References
Unless stated otherwise, positions and
directions such as left, right, upper, lower,
rear, clockwise and counter-clockwise are
given with respect to the machine when
viewed from the front.
3.4 Machine Label
The label below is an example of information available on the
machine.
3.5 Modes of Operation
Refer to the User’s Guide , see “1.7 Related Documents” on page 2 for
information.
SC 303
–
Made 2016
VAC
Fuse
Hz
mA
A
6
7
8
9
10
11
1
2
3
4
5
1Machinetype
2PartNo.
3 Serial No.
4 WEEE-symbol*
5CE-symbol
6Supplyvoltage
7Frequency
8 Currency consumption
9Fuse
10 Year of manufacture

Introduction
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3.6 Accessories
All electrical accessories are plugged into sockets on the back of the
machine.
Accessory Description Remark
BA 3
011611-000
Bagging attachment Bag holder replacing the coin cup
on the right hand side of the
machine.
BG 1
010686-000
Bag guide without shelf Mounted on the coin outlet. For
small paper bags and plastic bags.
BGS 1
002959-000
Bag guide with shelf Same as BG 1 but with a shelf for
the bag to rest on.
CA 1
011612-000
Coin adaptor To enable TI 1, BG 1, BGS 1 to fit
the machine.
HE 1
013501-000
Hopper extension kit SC 313 only. Increases the hopper
capacity to approx 4.8 litres.
IH 1
002525-000
Insert holder Holder for tubing insert (TI 1).
Mounted on the machine’s coin
outlet.
TI 1
002703-xxx
Tubing insert Various sizes depending on coin
diameter. Used with IH 1.

Installation
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4 Installation
4.1 Installation Requirements
• The machine must be placed on a stable horizontal surface.
• Ensure that the environmental requirements are met when
installing the machine, see 6.2 “Environmental” on page 11.
• Do not place the machine close to any radiators.
• Do not place the machine in direct sunlight as reflections from
the sunlight will make it impossible to read messages displayed
on the screen and may also cause the internal temperature of the
machine to rise above an acceptable level.
• Allow some free space around the machine to enable the air to
circulate.
WARNING!
Risk of electric shock!
The machine is of metal construction and must therefore always be
earthed to the supply. Ensure that the plug on the supply lead is
earthed and that the supply source is earthed. This is a requirement
for this type of equipment and if not adhered to will contravene the
international standards of Health and Safety in the work place.
Although this machine has been tested for electromagnetic
compatibility and vibration characteristics, it is recommended that
no equipment which generates a high level of electromagnetic
interference (EMI) or vibration is placed close to this machine.
Note! If the plug on the supply lead to the machine has a fuse, make sure it
has the correct rating in amps. Refer to 6.2 “Environmental” on page
11.
For AC voltage input, see section 6.2 “Environmental” on page 11.

Technical Description
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5TechnicalDescription
5.1 Mechanical Construction
The SC 303/SC 313 consist of a chassis enclosed within removable
plastic covers. With the covers removed all components of the
machine are accessible for maintenance.
The drives for the out-feed belt, the coin disc, and the channel drive
belt are powered by the main electric motor.
5.2 Electronics
The electronics in the SC 303 and SC 313 are contained on the CPU
board and the PSU board.
CPU Board
The functions of the CPU board are based on a single microchip
controller. The supply voltage is + 5 V DC and the power
consumption is approximately 180 mA.
Power Fail and Watch Dog
A power fail and watchdog circuit monitors the unregulated 24 V DC
supply. The watch dog is connected via CN2 pin 8 to IC8 pin 4.
If the voltage drops to approximately 14 V, power fail is detected at
pin 12 of the microcontroller. The program is interrupted and data is
transferred to the EEPROM. At the next power on, the information
written into the EEPROM is read into the microcontroller memory.
Display
There are six multiplexed, seven segment LEDs (DIS1 - DIS6)
mounted on the CPU board. Ports P00 to P07 on the
microcontroller drive the display segments and port P27 together
with IC3 select the digits. Each of the six display units is lit for
approximately 270 μs, which gives a cycle time of approximately 1.7
ms. To avoid display flicker the display units are updated in the order
DIS5, DIS2, DIS6, DIS1, DIS3, DIS4, DIS5 and so on.
Keys
All control keys are connected directly to the microcontroller via the
ports P10 to P15. All contact bounces are filtered by the software.

Technical Description
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Count Sensor Input
Signal pulses from the coin sensor are processed by the
microcontroller. Any pulses with a duration shorter than 1 ms are
rejected as false.
Permanent Memory
IC5 is a serial EEPROM which forms the permanent memory. In the
event of a power supply loss the micro controller automatically stores
important information at this location. When the power supply is
resumed the micro controller reads the information from the
EEPROM and restores the machine to the state it held prior to the
power loss.
PSU Board
The PSU board uses a 5 V/1 A switched regulator. A 6.8 V transient
absorption diode Z1 protects the circuit from transient voltages.
The motor is switched ON/OFF via opto-isolator OP1 and triac
SCR1. A single 5 V pulse is used for the switching. Forward/reverse
control of the motor is provided by means of the 24 V relay REL1.
The relay switches the motor supply voltage between two
independent windings on the motor, connected in opposite polarity.
The stop solenoid is operated via the transistor T1. This paragraph
relates to revisions 1, 2 and 3.
On revision 4 the motor is controlled by triacs only, instead of a
relay. The coin level detection is integrated on the PSU board, so
there is no need to use the CH 45 board.

Technical Data
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6TechnicalData
6.1 Physical
6.2 Environmental
6.3 Functional
Description SC 303 SC 313
Coin tray, approximately 2.0 litres 3.0 litres
Width 228 mm (9.0") 260 mm (10.3")
Height 165 mm (6.5") 310 mm (12.2")
Depth 325 mm (12.8") 380 mm (15.0")
Weight 7.5 kg (16.5 lb) 10.5 kg (23.0 lb)
Description Value
Operating temperature 15-35 °C
Operating humidity 30-80% R.H.
Noise level (operation) 81 dB (A)
Power requirements:
•Voltage
•Frequency
• Consumption
220-240 VAC
50 Hz
800 mA
110-130 VAC
60 Hz
400 mA
Description Value
Counting rate, maximum 2,700 coins/minute
Coins with 15 mm (0.6") diamete
Coin diameter range 14.0-34.0 mm (0.55"-1.30")
Coin thickness range 1.0-3.4 mm (0.04"-0.13")
Display 6 digit
Batch range 5-10,999

Disassembly and Assembly
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7 Disassembly and Assembly
WARNING!
Risk of electric shock!
Follow the Safety Precautions.
Note! Some screws have nuts and/or washers. Be careful not to lose them
when removing the screws.
Note! Assembly is the reverse of disassembly, if not stated otherwise.
7.1 Exchanging Fuses
a) Switch off the mains electrical supply and disconnect the lead
from the supply socket.
b) Remove the fuse holder box (1) from the rear of the machine by
simultaneously pressing in the securing side clips.
c) Exchange both fuses for ones with the same voltage and current
rating as those already fitted (T2 A).
Caution! Use only fuses of the same current and voltage rating as those
originally fitted. The use of incorrect fuses could result in damage to
the machine.
d) Replace the fuse holder box and press it firmly in place.
Note! There is also a 1 A fuse on the PSU board in the 24 V AC input to
the board from the transformer. Refer to “7.2 Plastic Covers” on
page 13 and “7.7 PSU Board” on page 18 for details of how to gain
access to the PSU board.
1
1 Fuse holder box

Disassembly and Assembly
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7. 2 P l a s t i c C ove r s
To gain access to the main body of the machine for adjustment or
exchange of parts the plastic covers must be removed.
a) Remove the plastic cover (2) from the right hand side of the
machine.
b) Loosen and remove the screw on the right near the sensor and
then lift off the top left plastic cover (1).
c) Loosen and remove the two screws securing the top coin tray and
top back cover.
d) Lift off the coin tray and top back cover.
e) Carefully turn the machine upside down.
f) Loosen and remove the four fixing screws securing the lower
cover to the main body.
g) Carefully turn the machine back the right way up.
h) Unplug the power connector located at the motor assembly.
i) Lift the main body out of the lower cover.
QMACC
ON/OFF
BCE
MOTOR
SCAN COIN
303
COIN COUNTER
1 2 1 Left plastic cover
2 Right plastic cover

Disassembly and Assembly
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7.3 SC 313 Hopper Unit
To gain access to the interior of the hopper unit (1):
a) Loosen and remove the four screws in the metal plate on the
underside of the hopper.
b) Lift off the hopper cover.
1
1Hopperunit