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REV.-A
4.3.3 Carriage Timing Belt Tension Adjustment
This adjustment is performed on the printer mechanism alone. Be sure to perform this adjustment prior
to installing the printer mechanism in the lower case.
This adjustment is required in the following cases.
•
When the carriage motor is removed.
•
When the parts affiliated with the carriage mechanism are removed.
Tension should not be too high nor too low. If this adjustment is not performed collectly, the following
may result.
•
The print pitch will not be correct. (Bi-d adjustment won't correct it.)
•
Carriage errors will occur. (In the worst case.)
Step 1 Tighten the screw CCS (M3 X 8) clamping the belt tensioner on the left side of the carriage
mechanism temporarily.
NOTE: Confirm that the carriage timing belt is not twisted.
Step 2 Place the top of the tension gauge in the hook of the belt tensioner.
Step 3 Clamp the mechanism, pull the tension gauge, and tighten the screw firmly with the gauge
reading as follows:
Tension: 2.6
±
0.2 Kg
CCS (M3 X 8)
Tension gauge
I
Belt
tensioner
Hook
Figure 4-63. Carriage Timing Belt Tension Adjustment
4.3.4 Platen Gap Adjustment
This adjustment can be performed without removing the printer mechanism. This adjustment is required
in the following cases.
•
When the print head is removed.
•
When the platen is exchanged or removed.
•
When the carrige, guide shaft, and frame are exchanged or removed. (The parts affecting the head's
location.)
4-49
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