Epson Stylus Photo 895 Service Manual page 35

EPSON Stylus PHOTO 895/785EPX
CR Unit
CR Guide Shaft
Figure 2-5. Carriage Mechanism (Top view)
CR home position is detected with the HP sensor and the detection plate molded in the
CR unit as following figure. When the CR home position is detected with this sensor,
HIGH signal is output to the CPU.
HP Detection Lever
CR HP Detection Plate
Figure 2-6. CR Home Position
Operating Principles
HP Sensor
CR Motor
CR Timing Belt
Adjust Lever
Right Side View
CR HP Detection Plate
HP Detection Lever
Low Signal
High Signal
Eccentric Shaft
Figure 2-7. Outline of Adjust lever
The adjust lever is mounted on the right end of the carriage guide shaft. The carriage
guide shaft is an eccentric shaft and is rotated by operating the adjust lever, and thus
narrows (1.2 mm) or widens (2.1 mm) the gap (platen gap; PG) between the platen
surface and the print head. This is a mechanism for use by the user to select the
appropriate PG in accordance with the print results or other conditions such as the
amount of curl in the paper. Also, the parallelism adjustment bushings mounted on the
left and right ends of the carriage guide shaft adjust the amount of parallelism between
the carriage guide shaft and the platen.
Table 2-2. Adjust Lever Setting
Lever Setting
Position
Front Side
Deep Side
Overview
Revision A
Lever
Parallelism Adjustment Bushing
Carriage Guide Shaft
Amount of PG Correction
0mm （PG ： 1.2mm）
+0.9mm （PG: 2.1mm）
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