Rice Lake Okidata 320-390-420 Turbo - Service Guide - Manual (Page 51)

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Service Guide ML320/321Turbo
Chapter 3 Parts Replacement
3.1 Precautions for Parts Replacement
(1) Remove the AC power cord and the interface cable before disassembling or assembling.
(a) Turn off the power switch. Remove the plug of the AC power cord from the outlet. Remove the
power cord from the receptacle on the printer.
(b) To reconnect the power cord, connect it to the receptacle on the printer first, thenplug it into the outlet.
(2) Do not disassemble the printer as long as it is operating normally.
(3) Do not remove unnecessary parts, and limit the extent of disassembly as much as possible.
(4) Use the designated service tools.
(5) Carry out disassembly in the prescribed sequence; otherwise, damage to the parts may result.
(6) It is advisable to temporarily install screws, snap rings and other small parts in their original positions to
avoid losing them.
(7) Whenever handling the microprocessors, ROM, RAM IC chips and boards, do not use gloves that may
cause static electricity.
(8) Do not place the printed circuit board directly on the equipment or on the floor.
(9) If adjustment is specified in the middle of installation, follow the instructions.