Major Unit Replacement - TEC B-670 Series Maintenance Manual

2. MAJOR UNIT REPLACEMENT

2. MAJOR UNIT REPLACEMENT
CAUTION:
1. NEVER separate the ribbon motors from the attaching plate (bracket), because doing so will
change their adjustment. (See Fig. 2-8)
2. NEVER remove the two screws painted red on the side of the print block.
3. NEVER remove screws unless directed to do so in this manual. Removing screws may change
pre-set adjustments.
1) Turn the power off.
2) Open the right side and top covers.
3) Remove the six screws (FL-4x6, B-4x6 and B-3x8) to detach the left side cover.
4) Remove the (B-4x6) screw to remove the bottom plate.
Screw (B-4x6)
Screw (B-3x8)
Left Side Cover
Bottom Plate
NOTE : Instructions to open the top and right side covers and to remove the left side cover are omitted
from each removal/installation procedure provided below.
Lubrication
CAUTION:
1. Lubrication:
2. Kinds of oil:
3. Do not spray the inside of the printer with lubricants. Unsuitable oil can damage the mechanism.
All machines are generally delivered in their best condition. Efforts shoud be made to keep them that
way. Lack of oil, or the presence of debris or dust, may cause an unexpected failure. To maintain in
optimal operating condition, periodically clean the machine and apply the proper kinds of oil to each part
in which librication is needed.
Although the frequency of lubrication varies according to how often the machine is used, as a minimum
it is necessary to lubricate before any part becomes dry. It is also necessary to wipe off excessive oil
or it will collect dirt.
Disconnect power cord before replacing important parts.
During parts replacement
FLOIL G-488: 1 Kg can. (Parts No. 19454906001).
WARNING!
2-1
2. MAJOR UNIT REPLACEMENT
Top Cover
Screw (FL-4x6)
Right Side Cover
Screw (B-3x8)
EM18-33017
Fig. 2-1