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Troubleshooting is the countermeasure procedures that the service personnel should follow if
Troubleshooting is the countermeasure procedures that the service personnel should follow if
an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible
an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible
troubles which may occur in future and determine the troubleshooting procedures, so this
troubles which may occur in future and determine the troubleshooting procedures, so this
chapter covers some sample troubles. However, those samples will help the service personnel
chapter covers some sample troubles.
pinpoint and repair other defective elements.
pinpoint and repair other defective elements.
1 1 . . 1 1 P P r r e e c c a a u u t t i i o o n n s s
Be sure to observe and follow all the precautions to prevent any secondary problems from
Be sure to observe and follow all the precautions to prevent any secondary problems from
happening during troubleshooting.
happening during troubleshooting.
(1)
(1) Always t
Always turn OFF the po
urn OFF the power and un
PCBs, adjusting the machine and so on. If you need to take voltage measurements with the
PCBs, adjusting the machine and so on. If you need to take voltage measurements with the
power switched on, take the greatest of care not to receive an electric shock.
power switched on, take the greatest of care not to receive an electric shock.
(2)
(2) When con
When connectin
necting or discon
connector body and not the cables.
connector body and not the cables.
(3) St Static elec
(3)
atic electricit
tricity charged in you
PCBs, touch a metal portion of the machine to discharge static electricity charged in your
PCBs, touch a metal portion of the machine to discharge static electricity charged in your
body
body. When transporting PCB
. When transporting PCBs, be sure to wrap
When replacing the PCBs, put on a grounding wrist band and perform the job on an
When replacing the PCBs, put on a grounding wrist band and perform the job on an
antistatic mat. Also take care not to touch the conductor sections on the flat cables.
antistatic mat. Also take care not to touch the conductor sections on the flat cables.
(4)
(4) Fol
Follow
low the
the war
warnin
Warning
Warning
Hazard labels as shown below are attached to the machine. Fully understand the
Hazard labels as shown below are attached to the machine. Fully understand the
descriptions on the hazard labels and observe them during troubleshooting.
descriptions on the hazard labels and observe them during troubleshooting.
Take extreme care not to remove or damage the hazard labels.
Take extreme care not to remove or damage the hazard labels.
ERRO
ER
ROR I
R
IND
NDIC
TROUBLESHOOTING
TROUBLESHOOTING
C
C
T
T
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However, those samples will help the service personnel
wer and unplug the po
plug the power cabl
g or disconnectin
necting cable co
g cable connector
y charged in your body may damag
r body may damage electron
s, be sure to wrap them in conductive sheets.
ning by a
g by all m
ll mean
eans. s.
ICA
A
TIONS
TIO
NS
wer cable before rem
e before removing any c
oving any covers or
nnectors, make su
s, make sure that you h
re that you hold the
e electronic part
ic parts. Before hand
s. Before handling the
them in conductive sheets.
AND
AN
D
overs or
old the
ling the
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