OKIDATA OKIPAGE 20, Service Manual

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Service Manual - OKIPAGE20
Chapter 3 Parts Replacement
(1) Before starting to replace parts, remove the AC cord and interface cable.
(a) Remove the AC cord in the following sequence:
i) Turn off ("o") the power switch of the printer.
ii) Disconnect the AC inlet plug of the AC cord from the AC
receptacle.
iii) Disconnect the AC cord and interface cable from the printer
(b) Reconnect the printer in the following procedure.
i) Connect the AC cord and interface cable to the printer.
ii) Connect the AC inlet plug to the AC receptacle.
iii) Turn on ("I") the power switch of the printer.
(2) Do not try disassembly as long as the printer is operating normally.
(3) Do not remove unnecessary parts: try to keep the disassembly to a minimum.
(4) Use specified service tools.
(5) When disassembling, follow the determined sequence. Otherwise, parts may be damaged.
(6) Since screws, collars and other small parts are likely to be lost, they should temporarily be attached to
the original positions.
(7) When handling IC's such as microprocessors, ROM and RAM, and circuit boards, do not wear gloves
that are likely to generate static electricity.
(8) Do not place printed circuit boards directly on the equipment or floor.
[Service Tools]
The tools required for field replacement of printed circuit boards, assemblies and units are listed in Table