Chapter 3%3.1 Precautions for Parts Replacement
3. PARTS REPLACEMENT
The section explains the procedures for replacement of parts, assemblies, and units in the field. Only the
disassembly procedures are explained here. For reassembly, reverse the steps of disassembly
procedure.
3.1 Precautions for Parts Replacement
Note: Always use proper anti-static precautions. (1) Before starting the parts replacement, remove the
AC power cord and interface cable.
(a) Remove the AC power cord in the following sequence:
i) Turn off ["O"] the power switch of the printer. ii) Unplug the power cord from the AC outlet. iii)
Disconnect the power cord and interface cable from the printer.
(b) Reconnect the printer in the following sequence.
i) Connect the AC power cord and interface cable to the printer. ii) Plug the power cord into the outlet. iii)
Turn on ("l") the power switch.
(2) Do not try to disassemble as long as the printer is operating normally.
(3) Do not remove parts which do not need to be touched; try to keep disassembly to a minimum.
(4) Use specified service tools.
(5) When disassembling, follow the procedure in sequence laid out in this manual. Parts may be
damaged if these sequences are not followed.
(6) Since screws, collars and other small parts are likely to be lost, they should temporarily be attached to
the original positions during disassembly.
(7) When handling IC's such as microprocessors, ROM's and RAM's, or circuit boards, use proper
anti-static precautions.
(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 and units are listed in Table 3-1.
Table 3-1 Service Tools
OKI OL600/610ex (96-01-18