2-1
EO18-33003A
2. MAJOR UNIT REPLACEMENT
WARNING!
Disconnect power cord before replacing important parts.
2.1 REPLACING THE CPU PC BOARD
2. MAJOR UNIT REPLACEMENT
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Lubrication
CAUTION: 1) Lubrication: During parts replacement
2) Kinds of oil: Kinds of oil: FLOIL G-488: 1Kg can. (Part No. 19454906001).
Any machine is generally in its best condition when delivered; therefore, it is necessary to try to keep
this condition. Unexpected failure occurs due to lack of ioil, debris or dust. To keep its best condition,
periodically clean the machine and apply proper kinds of oil to each part in which lubrication is needed.
Although the frequency of lubrication varies according to how much the machine is used, at least it is
necessary to lubricate before the machine becomes dry. It is also necessary to wipe off excessibe oil
as it collects dirt.
Fig. 2-1
2.1 REPLACING THE CPU PC BOARD
NOTE: For the B-452-HS model, the following PC boards need to be removed before removing the CPU
PC board. Refer to the sections below.
Head Control PC Board (Refer to Section2.5.)
600 DPI EXPIO PC board (Refer to Section 2.7.)
Centronics interface Board (Refer to Section 3.2.)
1) Turn the power off.
2) Open the top cover.
3) Remove the two PT-3x10 screws to detach the top cover.
Top Cover
PT-3x10 Screw
Top Cover
CAUTION: Do not spray the inside of the printer with lubricants. Unsuitable oil can dam-
age the machanism.
