IBM 4846-545 Service Guide - Page 42

Troubleshooting, symptoms, actions

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3. When using application software, you may receive error messages that pertain to the software. Refer to the software manual for a description of those messages. Troubleshooting symptoms and actions If the SurePOS 500 system fails with no error message or beep code, see Table 11 to find problem symptoms and take the related action. Note: Corrupted CMOS may cause unpredictable problems. Before exchanging the system board to resolve a problem, go to "Clearing the CMOS settings" on page 15 and reset CMOS. Oftentimes, a corrupted CMOS is the source of the trouble. Table 11. Symptoms and actions If the problem is... Here's what to do. No power light on the tower unit. 1. Ensure that the system unit is plugged into a working electrical outlet and replug the power cable at the power supply. 2. Verify that the tablet display cable is plugged into the tablet. 3. Verify that the button/LED card in the tablet is plugged in properly. 4. Verify the power supply is properly installed. 5. Replace the power supply. See "Power supply - removing and replacing" on page 45. 6. Replace the system board. See "System board - removing and replacing" on page 49. Operator display exhibits: Blank screen No cursor displayed Screen is unreadable Other display problems. 1. Adjust the brightness control at the bottom right side of the display. 2. Ensure that the tablet display cable is securely connected. 3. Switch the unit off and the power on. 4. Run the operator display test using the diagnostic service program. 5. Replace the LCD assembly. See "Front bezel and LCD assembly - removing and replacing" on page 36. 6. Replace the system board. See "System board - removing and replacing" on page 49. For details on cash drawer removal and replacement procedures, see the IBM Point of Sale Options and I/O Devices Service Guide, GC30-9737. Throughout this text, this book is referred to as the I/O book. Cash drawer does not open when cash drawer key is turned to the open position. 1. Replace the keylock insert if the lock does not turn with the key. See the I/O book. 2. Gently pull the drawer open while holding the key turned to the open position to determine if the slide assembly is binding. Look for items that may cause binds, such as pens or paper clips. Replace the slide assembly if necessary. 3. Replace the cam, pawl, and spring kit. 4. Check for a bent actuator rod. Replace the actuator rod if necessary. Cash drawer does not stay closed. 1. Make sure that the keylock is not bound in the open position. Replace the keylock if necessary. 2. Replace the cam, pawl, and spring kit. 3. Replace the latch and the sensor assembly card. 4. Replace the cash drawer. 5. Replace the system board. See "System board - removing and replacing" on page 49. 20 Models 545 and 565 Hardware Service Guide

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3.
When
using
application
software,
you
may
receive
error
messages
that
pertain
to
the
software.
Refer
to
the
software
manual
for
a
description
of
those
messages.
Troubleshooting
symptoms
and
actions
If
the
SurePOS
500
system
fails
with
no
error
message
or
beep
code,
see
Table
11
to
find
problem
symptoms
and
take
the
related
action.
Note:
Corrupted
CMOS
may
cause
unpredictable
problems.
Before
exchanging
the
system
board
to
resolve
a
problem,
go
to
“Clearing
the
CMOS
settings”
on
page
15
and
reset
CMOS.
Oftentimes,
a
corrupted
CMOS
is
the
source
of
the
trouble.
Table
11.
Symptoms
and
actions
If
the
problem
is...
Here’s
what
to
do.
No
power
light
on
the
tower
unit.
1.
Ensure
that
the
system
unit
is
plugged
into
a
working
electrical
outlet
and
replug
the
power
cable
at
the
power
supply.
2.
Verify
that
the
tablet
display
cable
is
plugged
into
the
tablet.
3.
Verify
that
the
button/LED
card
in
the
tablet
is
plugged
in
properly.
4.
Verify
the
power
supply
is
properly
installed.
5.
Replace
the
power
supply.
See
“Power
supply
–
removing
and
replacing”
on
page
45.
6.
Replace
the
system
board.
See
“System
board
–
removing
and
replacing”
on
page
49.
Operator
display
exhibits:
Blank
screen
No
cursor
displayed
Screen
is
unreadable
Other
display
problems.
1.
Adjust
the
brightness
control
at
the
bottom
right
side
of
the
display.
2.
Ensure
that
the
tablet
display
cable
is
securely
connected.
3.
Switch
the
unit
off
and
the
power
on.
4.
Run
the
operator
display
test
using
the
diagnostic
service
program.
5.
Replace
the
LCD
assembly.
See
“Front
bezel
and
LCD
assembly
-
removing
and
replacing”
on
page
36.
6.
Replace
the
system
board.
See
“System
board
–
removing
and
replacing”
on
page
49.
For
details
on
cash
drawer
removal
and
replacement
procedures,
see
the
IBM
Point
of
Sale
Options
and
I/O
Devices
Service
Guide,
GC30-9737.
Throughout
this
text,
this
book
is
referred
to
as
the
I/O
book
.
Cash
drawer
does
not
open
when
cash
drawer
key
is
turned
to
the
open
position.
1.
Replace
the
keylock
insert
if
the
lock
does
not
turn
with
the
key.
See
the
I/O
book.
2.
Gently
pull
the
drawer
open
while
holding
the
key
turned
to
the
open
position
to
determine
if
the
slide
assembly
is
binding.
Look
for
items
that
may
cause
binds,
such
as
pens
or
paper
clips.
Replace
the
slide
assembly
if
necessary.
3.
Replace
the
cam,
pawl,
and
spring
kit.
4.
Check
for
a
bent
actuator
rod.
Replace
the
actuator
rod
if
necessary.
Cash
drawer
does
not
stay
closed.
1.
Make
sure
that
the
keylock
is
not
bound
in
the
open
position.
Replace
the
keylock
if
necessary.
2.
Replace
the
cam,
pawl,
and
spring
kit.
3.
Replace
the
latch
and
the
sensor
assembly
card.
4.
Replace
the
cash
drawer.
5.
Replace
the
system
board.
See
“System
board
–
removing
and
replacing”
on
page
49.
20
Models
545
and
565
Hardware
Service
Guide