Develop D 2500iD, Руководство по обслуживанию

Страница: 16 / 232

FrameMaker Ver.5.5E(PC) Di250 GENERAL, MECHANICAL/ELECTRICAL
99.01.14
G-7
Service Precautions
(1) Precautions
Refer to DISASSEMBLY/CLEANING for the Disassembly procedure.
1. When unplugging connectors on the P.W.B.s themselves, always make sure the power
is OFF first. Be sure to unplug the copier before disassembling and cleaning.
2. Always unplug connectors by holding the connector housing. Pulling on the wires can
lead to problems with poor contact.
3. It is recommended that a body ground not be used when carrying out any troubleshoot-
ing procedure. Be sure to ground DC lines to a ground test point on the P.W.B.
(2) At Replacement/Adjustment/Cleaning
1. Be sure to handle the Fusing Unit carefully. It remains hot a while after the copier is
turned off.
2. Do not disassemble the Imaging Cartridge or Print Head Unit.
3. Do not expose the PC Drum of the Imaging Cartridge to direct sunlight or to room light-
ing for more than 5 minutes.
4. Turn off the power before removing the Print Head Unit to protect the eyes from possible
exposure to the laser beam.
5. Use only a Fuse of the indicated rating.
(3) During Operation
1. Keep your hands, clothing, etc. well away from operating or rotating parts.
2. Never touch the terminals of electrical parts or high voltage parts.
3. This copier uses an invisible laser beam. To prevent a laser beam leak, the copier per-
forms a trial run to make sure the covers are in position.
Handling the P.W.B.
Observe the following precautions when handling a P.W.B. with ICs.
(1) During Transportation/Storage
1. During transport and storage, P.W.B.s should be kept in conductive bags or on mats
and not taken out unless absolutely necessary.
2. P.W.B.s should be stored in a place where direct sunlight does not strike them.
3. Do not touch IC terminals with your hands.
(2) At Replacement
1. Before removing connectors from a P.W.B., make sure the copier has been unplugged.
2. When P.W.B.s are taken out of their conductive bags or off their mats, hold them by their
edges to avoid touching the terminals or the patterned surfaces.
3. Before installing connectors on a P.W.B., make sure the copier has been unplugged.