Samsung SER-6500 User manual

SER - 6500
SER - 6540
SERVICE
ELECTRONIC CASH REGISTER
—
ELECTRONIC
CASH
REGISTER
/ SER-6500F
/ SER-6540F
Manual A
. Precaution Statements
. Product Specifications
.
Installation
and
Operation
. Disassembly and Reassembly
. Alignments and Adjustments
2
3
4
5
6.
7
8
-
Troubleshooting
. Main PCB Wiring Diagram
. Block Diagram
.PCB Diagrams and Parts List
10.Initial Clear Procedur €
11.O0peration
and
Description
12.Schematic Diagrams

ene
4
Precaution
Statements
Follow
these
safety,
servicing
and
ESD
precautions
to
prevent
damage
and
to
protect
against
potential
hazards
such
as
electrical
shock.
1
-1 Safety Precautions
eR
nt
1.
Be
sure
that
all
built-in
protective
devices
are
replaced.
Restore
any
missing
protective
shields.
When reinstalling the chassis and its
assemblies, be sure to restore all protective
devices, including: nonmetallic control knobs
and compartment covers.
Make sure there are no cabinet openings
through
which
people
—
particularly
children
—
might insert fingers and contact dangerous
voltages.
Such
openings
include
excessively
wide
cabinet
ventilation
slots
and
improperly
fitted covers and drawers.
Design Alteration Warning:
Never alter or add to the mechanical or
electrical design of the ECR. Unauthorized
alterations might create a safety hazard. Also,
any
design
changes
or
additions
will
void
the
manufacturer's warranty.
Components, parts and wiring that appear to
have overheated or that are otherwise
damaged
should
be
replaced
with
parts
that
meet the original specifications. Always
determine
the
cause
of
damage
or
overheating,
and correct any potential hazards.
1-2 Servicing Precautions
6.
Observe
the
original
lead
dress,
especially
near
the following areas: sharp edges, and
especially the AC and high voltage supplies.
Always inspect for pinched, out-of-place, or
frayed wiring. Do not change the spacing
between components and the printed circuit
board. Check the AC power cord for damage.
Make sure that leads and components do not
touch thermally hot parts.
Product Safety Notice:
Some electrical and mechanical parts have
special safety-related characteristics which
might not be obvious from visual inspection.
These safety features and the protection they
give might be lost if the replacement
component differs from the original - even if
the replacement is rated for higher voltage,
wattage, etc.
Components that are critical for safety are
indicated in the circuit diagram by shading,
(<1)
or
(A\).Use
replacement
components
that
have the same ratings, especially for flame
resistance
and
dielectric
strength
specifications.
A replacement part that does not have the
same
safety
characteristics
as
the
original
might
create shock, fire or other hazards
Warning
1:
First
read
the
“Safety
Precautions”
section
of
this
manual.
If
some
unforeseen
circumstance
creates
a
conflict
between
the
servicing
and
safety
precautions,
always
follow
the
safety
precautions.
Warning
2:
An
electrolytic
capacitor
installed
with
the
wrong
polarity
might
explode.
1.
Servicing precautions are printed on the
cabinet. Follow them.
2. Always unplug the unit’s AC power cord from
the AC power source before attempting to:
(a) Remove or reinstall any component or
Samsung SER-6500 / SER-6540 / SER-6540F
assembly, (b) Disconnect an electrical plug or
connector, (c) Connect a test component in
parallel with an electrolytic capacitor.
Some components are raised above the printed
circuit board for safety. An insulation tube or
1-1

Precaution Statements
tape is sometimes used. The internal wiring is
sometimes clamped to prevent contact with
thermally hot components. Reinstall all such
elements to their original position.
After servicing, always check that the screws,
components and wiring have been correctly
reinstalled. Make sure that the portion around
the serviced part has not been damaged.
Check the insulation between the blades of the
AC plug and accessible conductive parts
(examples: metal panels and input terminals).
Insulation Checking Procedure: Disconnect
the power cord from the AC source and turn
the power switch ON. Connect an insulation
resistance meter (500V) to the blades of the AC
plug.
The insulation resistance between each blade
of the AC plug and accessible conductive parts
(see above) should be greater than 1 megohm.
Never defeat any of the B+ voltage interlocks.
Do not apply AC power to the unit (or any of
its assemblies) unless all solid-state heat sinks
are correctly installed.
Always connect an instrument's ground lead to
the instrument chassis ground before
connecting the positive lead; always remove
the instrument's ground lead last.
1-3 Precautions for Electrostatically Sensitive Devices (ESDs)
1,
1-2
Some semiconductor (“solid state”) devices are
easily damaged by static electricity. Such
components are called Electrostatically
Sensitive Devices (ESDs); examples include
integrated circuits and some field-effect
transistors. The following techniques will
reduce the occurrence of component damage
caused by static electricity.
Immediately before handling any
semiconductor components or assemblies,
drain the electrostatic charge from your body
by touching a known earth ground.
Alternatively, wear a discharging wrist-strap
device. (Be sure to remove it prior to applying
power - this is an electric shock precaution.)
After removing an ESD-equipped assembly,
place it on a conductive surface such as
aluminum foil to prevent accumulation of
electrostatic charge.
Do not use freon-propelled chemicals. These
can generate electrical charges that damage
ESDs.
Use only a grounded-tip soldering iron when
soldering or unsoldering ESDs.
Use only an anti-static solder removal device.
Many solder removal devices are not rated as
“anti-static,” these can accumulate sufficient
electrical charge to damage ESDs.
Do not remove a replacement ESD from its
protective package until you are ready to
install it. Most replacement ESDs are packaged
with leads that are electrically shorted together
by conductive foam, aluminum foil or other
conductive materials.
8.
Samsung
immediately before removing the protective
material from the leads of a replacement ESD,
touch the protective material to the chassis or
circuit assembly into which the device will be
installed.
Minimize body motions when handling
unpackaged replacement ESDs. Motions such
as brushing clothes together, or lifting a foot
from a carpeted floor can generate enough
static electricity to damage an ESD.
SER-6500 / SER-6540 / SER-6540F

2
Product
Specifications
Specifications
are
correct
at
the
time
of
printing.
Product
specifications
are
subject
to
change
without
notice.
See
below
for
product
specifications.
2-1 Specifications
AC
Power
Source
:
Power
Consumption
|W
«SA
and
Europe
R/J
Printer
1
pair,
9-pin
Dot
matrix
Printing
speed:
3.0
lines
per
second
Receipt/Journal
paper
sensor
Data
Storage
60
Days
When
battery
fully
charged
Battery
Keyboard
SER-6500
SER-6540
Interface
Default
:
RS-232C
:
:
IRC
:
2
port
Ext.
i
RS-232C
:
optional
Drawer
D5508,
5C5B
USA
8C4B
Europe
Weight:
9.3Kg
Dimensions:
400
(W)
x
450
(L)
x
111
(H)
millimeters
Packing
Carton
Weight:
17.6Kg
millimeters
AC
120V,
60Hz
USA
AC
230V,
50
Hz
Europe
Receipt
paper
auto-cutter
(optional)
a
Processor
INTEL
180188
INTEL 18032/80C32
Memory
180188
Default:
SRAM
(KM681000*2)
:
256kbyte
EPROM (27C010*3) : 384kbyte
EXT.
:Main
PCB
SRAM
(KM681000*1
)
:
128kbyte
Option
PCB
SRAM
(KM681000*8)
:
1024kbyte
18032/80C32
SRAM (KM6264*1) : 8kbyte
EPROM (27C512*1) : 64kbyte
Ni-cad, 60mA
Charging time: 24 hours
Display
Front:
12-character
dot
display
(12digit
/
10digit)
Rear: 10-digit display
IRC
Communication
mode:
CSMA/CD,
RS485
Communication
speed:
125Kbps
Communication
distance:
1km
maximum
Test
Condition
:
Belden
Cable
,
1
pair
twisted,
shielded, AWG22
When packed
Dimensions:
400
(W)
x
462(L)
x
305
(H)
nnn
Ene
Samsung
SER-6500
/
SER-6500F
/
SER-6540
/
SER-6540F
2-1

2 Product Specifications
2-2 Dimension , Feature
2-2-1 Dimension
400
2-2-1
Samsung
SER-6500
/
SER-6500F
/
SER-6540
/
SER-6540F

2-2-2, Feature
@® Cover Printer
@ Key-board
® Drawer lock key
@M ode switch
Window display
@ Rear display
2 Product Specifications
EY Oe
@ Impact dot printer
@ Drawer
© IRC (Inter Register Communication)
Serial 1 (RS232C)
Serial 2 (RS232C)
ee
a
Samsung
SER-6500
/
SER-6500F
/
SER-6540
/
SER-6540F
2-
2-2

2 Product Specifications
2-3 Communication Interfaces
2-3-1 Serial Interfaces, Port Locations
serial 4 serial 3
IRC
serial 2
serial 1
Main PCB
Optional PCB
Figure 2-1. RS-232C Interface Locations
2-3-1
Serial
Interfaces,
Pin
Descriptions
(OPTIONAL
.P.C.B.)
i |
|
|
Pin No. 8 Pin No. 1
Figure 2-2. Pin Locations
Table 2-1. Pin Descriptions, Serial Ports Optional
Serial Port 2
Pin No. Signal
Serial Port 1
Pin No. Signal
Serial Ports 3 and 4
PinNo. | Signal
ne
a
2-3
Samsung
SER-6500
/
SER-6500F
/
SER-6540
/
SER-6540F

3
Installation
and
Operation
This
chapter
details
the
method
for
installing
the
ECR
system.
3-1
System
Configuration
PC
#1
#2
#16
(Max)_
RS-232C1
IRC
IRC
Terminator
(O)
Terminator
(x)
Terminator
(©)
Figure 3-1. Multiple Terminal System
Note:
1.
When
installing
IRC
connector,
connect
the
GROUND
terminal
only
at
the
one
END
of
IRC
cable.
2.
When
installing
a
system
with
multiple
terminals,
connect
a
Terminator
only
at
the
two
ends
of
the
chain,for
example,
at
terminal
1
and
at
terminal
16.
Do
not
use
a
Terminator
at
any
ECR
between
the
first
and
last
units.
3-1-1
Terminator
Specification
Ferrite core inserted and tuned to
K4 “4” (for accessory)
Figure
3-2.
Terminator
sen
Figure 3-4. Cable for Serial Ports 3 and 4
3-1-2
Cable
Specifications
6
pin
*
Twisted
pair
cable
is
recommaned.
topper
JL (ws to tie cable)
=a
|
oc
Ferrite
core
a
:
<<
|
inserted
and
tuned
Ferrite
core
inserted
and
turned
to
|
250
mm
to
"4"
(for
“4”, (for accessory)
accessory)
50 mm
pin NO. 1: IRC+
Figure
3-3.
Cable
for
Serial
Ports
1
and
2
pin
NO.
3:
FRAME
GROUND
pin NO. 6: IRC-
Pin
No.6
Pin
No.
1
Figure
3-5.
Cable
for
IRC
a
Samsung
SER-6500/
ser-6500F
/
SER-6540
/
SER-6540F
3-1

3 Installation and Operation
3-2 Installation
WARNING: When connecting the keyboard to the Main PCB, make sure the membrane sheet is
shaped as in Figure 3-6 (a), below. If the membrane is shaped as in Figure 3-6 (b), the
keyboard may malfunction.
Keyboard Keyboard
Membrane Sheet
Correct position Wrong position
an
Main PCB
Main PCB
Lower Case Lower Case
(a) (b)
Figure 3-6. Membrane Shape
3-2-1 Printer 3-2-2 Ribbon Cassette Installation
Figure 3-8. Ribbon Cassette
1. Before inserting ribbon cassette@, turn knob ©
atari Sr lmipact Dor banter (see Figure 3-8) counterclockwise to prevent
@ Spool © Paper Release Lever
twisting the ribbon.
@ Stamp(LOGO) © Ribbon Cassette 2. After inserting the ribbon cassette@ at the
@ Paper Chute center® of the printer, turn the knob ©
counterclockwise again to make sure the
; ; ribbon moves freely in the cassette.
Figure 3-7. Printer
3-2
Samsung
SER-6500/
SER-6540
/
SER-6540F

3-2-3 Receipt/Journal Paper Insertion
HQ) SN
i) A
Figure 3-9. Folding Paper for insertion
1. Usinga new roll of paper, unroll the paper
about 150 mm and fold the paper as shown in
Figure 3-9,
Figure 3-10. Inserting the Paper
2. Insert folded paper into the chut @ of the ERP-
300V printer. While holding the lever ©
down,
pull
the
paper
out
until
the
fold
point
©
is completely out of the printer. And turn the
knob ® like an arrow.
3. Cut the receipt paper
Samsung SER-6500 / SER-6540 / SER-6540F
3 Installation and Operation
Figure
3-11.
Inserting
the
Journal
Paper
Insert
the
journal
paper
into
the
slit
@of
the
rewind
spindle.
Wind
the
spindle
three
or
four
times.
Push
end
disk
onto
the
spindle
as
shown
in
Figure
3-11.
Insert the spool to the printer part ©.
When
the
journal
paper
is
loose,
rewind
the
spindle
to
tighten
the
paper.

3 Installation and Operation
3-2-4 Option Board (BD-65) Installation
The ECR-65*0 series allows for an increase in the
system memory by using an optional memory
board (BD-65). Refer to the Exploded Diagram
when disassembling and reassembling this ECR.
Use the following instruction when installing this
optional board.
1. Disconnect the ECR from the external power
outlet.
2. Lift off the Printer Cover.
3. Remove three screws (C2, C3 and C4) on
Upper Case and lift it up.
4. Remove connectors from the red and the white
connectors on Main PCB.
Remove Upper Case and Key-Board .
If you will be connecting optional equipment
through the Option Board (barcode reader or
computer) insert cable connector through the
channel in the back of ECR.
7. Insert desired number of RAM chips (1Mbit
each) in connectors on Option Board. If not
installing a full complement of chips, be sure to
insert them in the order shown in Figure 3-13.
8. Position Option Board over connector CNI on
Main PCB and carefully press connector on
Option Board down to firmly seat it.
9. Insert three screws in the corners to secure
Option Board in place.
3-4 SAMSUNG SER-6500 / SER-6500F / SER-6540 / SER-6540F
10.
11.
12.
serial 4 serial 3
Figure 3-13. Adding More RAM
If desired, attach cable connector from
peripheral equipment to Serial Port 3 or 4 on
Option Board.
Replace the connections at the red and the
white connector on the Main PCB.
Reposition Upper Case and Key-Board on
Lower Case and replace three screws at C2, C3
and C4.
. Replace the Printer Cover.
14. Re-connect the ECR to the power outlet.

3 Installation and Operation
3-3 Operation
Note:
Before
using
this
System
Electronic
Cash
Register
(SECR)
for
the
first
time,
leave
it
powered
ON
in
the
“REG”
mode
for
at
least
twenty-four
hours.
This
allows
the
Ni-Cad
battery,
which
maintains
the
SECR’s
memory
while
the
power
is
OFF,
to
fully
charge.
3-3-1 Mode Switch
The
position
of
the
Mode
Switch
determines
the
action
of
the
SECR.
The
modes
are
as
shown
in
Table
3-1,
below.
Table 3-1. SECR Modes
a
a
Figure 3-14. Mode Switch
Z-level report generation
3-3-2 Keyboard Matrix
The
SER-6500
and
SEC-6540
SECRs
offer
two
different
types
of
keyboards;
90-key
or
160-key
as
shown
in
Table 3-2.
Table 3-2. Keyboard Types
SER-6540
SER-6500
i
ee
eS
Samsung
SER-6500/
SER-6500F
/
SER-6540
/
SER-6540F
3-5

3 Installation and Operation
Memo
3-6
Samsung
SER-6500 / SER-6500F / SER-6540 / SER-6540F

mr
A
a
ee
4
Disassembly
and
Reassembly
This
chapter
describes
the
disassembly
and
reassembly
procedures
for
SER-6500,
SER-6540
and
SER-6540F
electronic
cash
registers.
WARNING:
This
ECR
contains
electrostatically
sensitive
devices.
Use
caution
when
handling
any
components.
4-1 Disassembly
i
ne
a.
Caution:
Disconnect
the
ECR
from
the
external
power
source
before
disassembly.
Note:
The
following
directions
are
given
for
the
SER-6500.
Differences
between
the
models
are
identified
in the text.
.
3.
Remove
four
screws
[c]
and
separate
Upper
4-1-1
Upper
Case
Disassembly
Frame
Ass’
y
C
from
Lower
Frame
Ass*y
I.
Pull
1.
Lift
off
Printer
Cover.
Upper
Frame
Ass*y
in
the
direction
shown
in
2.
Remove
three
screws
(C2,
C3
and
C4)
on
Figure
4-2.
Upper
Case
and
lift
it
up.
pulling
: direction
3.
Remove
connectors
from
the
red
and
the
white
connectors on Main PCB.
4. Remove Upper Case.
4-1-2
ERP-300V
Printer
Disassembly
1. Remove four screws [a] on Upper Frame
Assembly
C
and
remove
Cover
A.
See
Figure
4-1, below.
2.
Remove
two
screws
[fb]
and
remove
Ribbon
Frame
B from
Lower
Frame
Ass*y
I, as
shown
in
the
drawing.
Figure 4-2. Separating Upper Frame from Lower
Frame
Figure 4-1. Printer Disassembly
ne
On
a
eS
Ee
Samsung
SER-6500
/
SER-6500F
/
SER-6540
/
SER-6540F
4-1

4 Disassembly and Reassembly
4, Turn Upper Frame Ass*y C upside down and Remove left side screw [e] on Platen Paper
remove three screws [d]. Remove Stamp Guide E. This screw connects Platen Paper
Paper Guide Ass‘ y D from Upper Frame Ass* y Guide Ass*y E to Stamp Paper Guide Ass* y D.
C. See Figure 4-4, below.
Figure 4-3. Stamp Paper Guide Removal Figure 4-4. Platen Paper Guide Removal
5.
4-2 Reassembly
Caution: Adjust Head Gap (see Alignments and Adjustments chapter) before returning ECR to owner.
4-2-1 ERP-300V Printer Reassembly
1. Position Platen Paper Guide Ass* y E on Stamp
Paper Guide Ass’ y D and replace screw [e] (see
Figure 4-4, above).
2. With Upper Frame Ass*y C upside down,
position Stamp Paper Guide Ass‘ y D and
replace three screws [d] (see Figure 4-3, above).
3. Position Upper Frame Ass*y C on Lower
Frame Ass*y | and replace four screws [c] (see
Figure 4-5, to the right).
Caution: Locate Stamp Pusher F on hatched
area as shown in the figure.
4. Position Ribbon Frame B on Lower Frame
Ass*y | and replace two screws [}] (see Figure
4-1, above).
5. Position Cover A on Upper Frame Ass*y C and
replace four screws [8]. Figure 4-5. Stamp Pusher Position
a ee EI a a re
4-2 Samsung SER-6500 / SER-6500F / SER-6540 / SER-6540F

a
5
Alignments
and
Adjustments
|
This
chapter
describes
the
methods
for
aligning
and
adjusting
components
in
this
ECR.
5-1
Printer
Adjustments
5-1-1
Head
Gap
Adjustment
5-1-2
Roll
Paper
Near-End
Detector
1.
Assemble
Upper
Frame
Assembly
A
to
Lower
(Type
1
Paper
Sensor)
Frame
Ass*y
I
and
loosely
fix
screws
[c].
;
;
:
;
5-1-1
(a)
Adjustment
Point
2.
Wind
Head
Gear
counter
clockwise,
move
Head
to
right
end
of
Platen
Guide.
Adjustment
Scale
3.
Insert
Gap
Gauge
(width
0.5
mm)
between
2
Head
and
Platen.
Tighten
screws
[c].
ie
|
|
4.
Inthesame
method,
wind
Head
Gear
again
|
and
move
Head
to
left
end
of
Platen
Guide.
#4
|
5.
Insert
Gap
Gauge
(0.5
mm)
and
tighten
the
#3
|
Bd
dea
Ey
aieitone
screws.
|
i
aoa
roe
#2
|
6.
After
tightening
all
screws
|c)
apply
Nej-Lock
|
|
|
|
(a
brand
of
grease)
on
each
of
the
four
screws
#1
Adjustment
%
Point
Bracket
P/END
ll
Bracket
(Set for Paper Thickness = 0.075 mm)
Figure 5-2. Adjustment Point
As
Figure
5-2
shows,
the
slide
bracket
is
set
at
Adjustment
Scale
#3.
This
is
the
appropriate
scale
for
the
recommended
paper
thickness
(0.075
mm).
The
accuracy
of
the
Near-End
Detector
depends
on
the
Adjustment
Scale
setting
and
the
Roll
Paper
Winding
Core
diameter.
The
only
paper
approved
for use in this ECR has the following
characteristics:
Table
5-1.
Roll
Paper
Characteristics
Paper Width
Between Head and Platen
Winding Core Inner
Diameter
The
relationship
between
the
Adjusting
Scale
and
the
paper
remnant
remaining
on
the
core
is
as
Figure
5-1.
Head
Gap
Adjustment
shown
in
Figure
5-3.
nnn
Ere
Samsung
SER-6500
/
SER-6500F
/
SER-6540
/
SER-6540F
5-1
|

5 Alignments and Adjustments
Paper Remnant (m):
5
7~ NY WwW A
#1 #2 #3 «#4 °~«#5
——+
Figure 5-2. Relationship: Adjustment Scale to
Remnant Length
Note: Figure 5-2 applies only when using
Samsung recommended paper.
Figure 5-3 shows the relationship between the
Adjustment Scale and the outer diameter of the
Winding Core.
Adjustment Scale:
#5
#4
#3
#2
#1
10 15 20 2 30
———> _ outer diameter of Paper
Winding Core (©: mm)
iv
a
D: Outer Diameter
d: Inner Diameter
Figure 5-3. Relationship: Adjustment Scale to
Winding Core Diameter
Notes:
1. When using roll paper other than Samsung
recommended paper, roll paper remnant
lengths will differ.
2. When using roll paper with a red end mark,
Winding Core may be pulled out of its holder
due to the paper sticking to Winding Core.
Paper sensor may indicate an inaccurate
remnant length if Winding Core is pulled out
of its holder.
5-1-3 Clearing a Paper Jam
5-1-3 (a) Paper Jamming Causes
1.
When more than two papers enter the paper
path.
When paper cutting remnants remain in the
paper exit space.
5-1-3 (b) Clearing Procedure
Caution: Always disconnect the power cord from
the power outlet before working on the
Paper Cutter.
Open the Printer Cover and remove the Auto-
Cutter Cover 2.
Remove all jammed paper at Auto-Cutter.
Replace Auto-Cutter Cover 2 and close Printer
Cover.
The Auto-Cutter will operate as soon as power
is restored to the ECR. After cutting once, the
Auto-Cutter goes to its normal state.
5-2 SER-6500 / SER-6500F / SER-6540/SER-6540F Samsung

—
ss.
rs
6
Troubleshooting
i
This
chapter
describes
the
methods
for
determining
the
source
of
malfunctions
in
this
ECR.
6-1
Keyboard
Problems
eee
nn
6-1-1
(a)
Key
Input
Failure
6-1-1
(b)
Input
failure,
Specific
Key
1.
Check
Main
PCB
at
FS1
Check
affected
key.
2.
Check
all
voltage
states
6-1-2
Buzzer
Malfunction
3.
Check/
change
circuit
related
to
Main
PCB.
Check
circuit
related
to
Main
PCB
Buzzer
(U7-U9,U46)
(Q7
,
BZ1)
,
4, Check printer
6-2 Printer Failure
3.
Check/change
Main
PCB
(TA1
to
TA3) and
related
circuits.
6-2-1
Motor,
Stamp,
Auto-Cutter,
or
Paper
Feed
Failure
1.
Check
Printer.
6-2-3
Receipt/Journal
Paper
Sensing
.
Check
harness
.
(CN9,CN11)
Failure
3.
Check
Main
PCB
(TAI
to
TA3)
and
related
1.
Check
dummy
of
Paper
Near
End
Sensor.
circuits.
Check
the
Spring.
Check switch operation status.
Check wire soldering state.
6-2-2
Head
Failure
2.
Check
connection
between
Main
PCB
and
1.
Check
Head
Pin
and
Coil.
Printer.
2.
Check
harness
(CN9
to
CN10)
4.
Check
for
paper
jam
or
ribbon
twists.
6-3 Drawer Failure
.
.
2.
Check
10
d
Closed
states
usi
6-3-1
Drawer
Does
Not
Automatically
jai
Sal
a
Open
3.
Check
Main
PCB
at
Q12,,Q13,
Q14
and
1.
Check
Drawer
Solenoid
and
harness
related
circuit.
(both
ECR
side
and
Drawer
side)
6-4 Clock Failure
x
Check
U27,
C30,
C31
and
X2.
ne
Enna
Samsung
SER-6500
/
SER-6500F
/
SER-6540
/
SER-6540F
6-1

6 Troubleshooting
6-5 Display/Customer Display Failure
1. Check/change fluorescent Display PCB solder 3. Check/change Main PCB-related circuits.
points and connection harness.
2. Check Main PCB at CN26 connection
harness.
6-6 Mode Failure
1. Check state of key-lock and connector 2. Check Main PCB-related circuitry.
insertion.
6-7 Serial 1,2 Failure
1. Cable connections . U26 ) and related circuits.
2. Check solder points on Main PCB ( U34,U24- 3. loop back Test
6-8 IRC Failure
1. Check whether IRC cable is short, open, etc. 3. Check Main PCB at U28 and related circuits.
2 Check Main PCB at CN4 connection harness .
6-9 System Failure
3. Check contact of Mode Switch connector state.
4. Check for FPC of Key Board failure.
5. Check printer
6-9-1 System:Does Not Operate When
ALL CLEAR
1. Confirm input voltage is 220VAC..
2. Check fuse FS1 on Main PCB and each output
voltage.
N
SER-6500 / SER-6500F /SER-6540/SER-6540F Samsung

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7 Main PCB Wiring Diagram
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Ne
Samsung
SER-6500
/
SER-6500F
/
SER-6540
/
SER-6540F
7-1