Platen Gap Adjustment - Epson LQ-2170 Service Manual

LQ-2170 Service Manual

2.1.3 Platen Gap Adjustment

You can adjust the platen gap (the gap between the platen and printhead) to allow the printer to use paper of
different weights or thicknesses. When you move the platen gap adjust lever forward or backward, the
carriage guide shaft rotates. This rotation moves the carriage either toward or away from the platen and
changes the platen gap. This adjustment function has nine ranges for the adjustment, and the adjustment
position is detected by platen gap (PG) switches.
Moving the platen gap adjust lever beyond position 2 changes the print speed mode to Copy mode, and the
speed slows down to about
between the platen gap and the print speed.
Paper Thickness
Paper Type
Single Sheet 0.065
0.1
0.14
Continuous 0.065
Paper (Single
0.09
Sheet)
Continuous ~0.18
Paper (Multipart)
~0.25
~0.32
~0.39
Labels 0.07 / 0.19
Envelopes 0.16 / 0.32
0.16 / 0.40
0.22 / 0.44
0.23 / 0.46
0.26 / 0.52
Card Stock 0.22
Rev.A
PG Adjustment Lever
PG SW1
Platen Gap Adjustment Slot
PG SW2
Figure 2-3 Platen Gap Adjustment Lever
2 3 normal to protect the printhead. The following table show you the relationship
Table 2-2. Platen Gap and Print Speed
Adjust Lever
(mm) Position
Close
Op e n
PG SW
0 Closed
0 Closed
1 Closed
0 Closed
0 Closed
1 Closed
2 Open
3 Open
5 Open
2 Open
2 Open
3 Open
4 Open
4 Open
6 Open
2 Open
Operating Principles
Print Speed
Normal
Normal
Normal
Normal
Normal
Normal
Copy
Copy
Copy
Copy
Copy
Copy
Copy
Copy
Copy
Copy
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