Adjustment; Platen Gap Adjustment - Epson L-1000 Technical Manual

REV.-A

4.3 ADJUSTMENT

This section describes the adjustment procedures required for assembling the LQ-500/L-1000 printer. When
disassembly or replacement is performed during maintenance or repair of the parts described in this section,
perform the following adjustments to ensure proper operation.

4.3.1 Platen Gap Adjustment

Adjust the gap between the platen and the printhead when the carriage guide shaft or carriage guide shaft
levers are rotated or removed, or the printing is abnormal.
1. Remove the printer mechanism (refer to Section 4.2.4).
2. Install the paper guide and the platen unit on the printer mechanism.
3. Remove the printhead, then remove the ribbon mask using tweezers. When removing the ribbon mask,
pull it frontward slightly, then lift it.
4. Reinstall the printhead.
5. Set the head adjust lever at the position nearest the platen.
6. Manually move the carriage to column 10.
7. Insert a thickness gauge (0.45 mm) between the platen and the printhead, and adjust the left and right
carriage guide shaft levers so that the gap becomes 0.44 m 0.47 mm. When the weight of the thickness
gauge causes it to slip down, the gap adjustment is adequate.
When setting the position of the carriage guide shaft lever, be sure that both tabs A and B do not enter
the notch at the same time. It
A may not enter when tab B is inside.
LQ-500/L-1000
Figure 4-34. Removal of Ribbon Mask
designed so that tab B may not enter when tab A is inside, and that tab
IS
DISASSEMBLY, ASSEMBLY, AND ADJUSTMENT
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