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Optical Parts
Observe the following rules when servicing the optical parts. Otherwise, the image quality
may be degraded.
Before removing the protective housings, be sure to turn OFF the high-voltage switch (HV
switch). If the machine is powered ON with any of the protective housings removed, the
photomultiplier will be damaged.
Never remove the scanning optics unit covers. If the covers are removed, the image
quality may degrade.
For dust removal procedures, observe the instructions described in the manual.
Some high-voltage parts, such as the photomultiplier, may not be sufficiently discharged
even after power is turned OFF. When servicing such parts, exercise due care to avoid
electric shock hazards (not to touch the connector and terminal carelessly).
Other Working Precautions
Do not remove or install any part or component while the machine is powered, because of
possible electric shock hazards.
When performing checks or adjustments under the powered condition, exercise due care
against electric shock or other hazards.
Do not touch the parts (such as erasure lamps) that remain at high temperature because
you may suffer burns.
When servicing the scanning optics unit and printed circuit boards, be sure to wear an
antistatic wristband to remove static electricity built on the human body. Static electricity
may cause damage to the printed circuit boards.
Secure the machine onto the floor in place by use of its adjustable feet or retainers.
Keep clean the product labels, safety standards labels, product serial number indications,
and so forth attached on the machine, and do not peel them or put another label over
them.
Before powering ON the machine after completion of the servicing procedures, make sure
that all the parts, screws, connectors, and so forth that were removed have been rein-
stalled as appropriate, and that no tool is left in the machine.
009-058-00
10.10.2000 FM2732
CR-IR347 Service Manual
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