Epson LQ 1050 Technical Manual - Page 150

Adjustment - repair

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REV.-A 4.3 A D J U S T M E N T This section describes the adjustment procedures required when reassembling this printer. When disassembly or replacement is performed during maintenance or repaires of the parts described in this section, the following adjustments should be performed to ensure proper operation. 4.3.1 Platen Gap Adjustment Adjust the gap between the platen and the printhead when carriage guide shaft B is rotated or removed. Step 1: Remove the printer mechanism (Refer to Section 4.2.5. l.). Step 2: Remove the printhead (Refer to Section 4.2.5.2.). Step 3: Remove the ribbon mask. Figure 4-53. Ribbon Mask Holder and Ribbon Mask Configuration Step 4: Reinstall the printhead on the carriage. NOTE: When reinstalling the printhead, lock the head lock levers while pushing the printhead forward and downwoard. Step 5: Move the carriage to center. Step 6: Lighty loosen the HNO (4) nut securing the head adjustment lever (See Figure 4-50). Step 7: Turn the larger countersink of carriage guide shaft B upward (See Figure 4-55). Step 8: Insert the blade of a screw driver (a diameter is approx. 3 mm) into the countersink of carriage guide shaft B (See Figure 4-55). 4-37

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REV.-A
4.3
ADJUSTMENT
This section describes the adjustment procedures required when reassembling this printer. When
disassembly or replacement is performed during maintenance or repaires of the parts described in this
section, the following adjustments should be performed to ensure proper operation.
4.3.1 Platen
Gap
Adjustment
Adjust the gap between the platen and the
printhead
when carriage guide shaft B is rotated or removed.
Step 1: Remove the printer mechanism (Refer to Section 4.2.5. l.).
Step 2: Remove the
printhead
(Refer to Section 4.2.5.2.).
Step 3: Remove the ribbon mask.
Figure 4-53. Ribbon Mask Holder and Ribbon Mask Configuration
Step 4: Reinstall the
printhead
on the carriage.
NOTE: When reinstalling the
printhead,
lock the head lock levers while pushing the
printhead
Step 5:
Step 6:
Step 7:
Step
8:
forward and downwoard.
Move the carriage to center.
Lighty loosen the HNO (4) nut securing the head adjustment lever (See Figure 4-50).
Turn the larger countersink of carriage guide shaft B upward (See Figure 4-55).
Insert the blade of a screw driver (a diameter is approx. 3 mm) into the countersink of carriage
guide shaft B (See Figure 4-55).
4-37