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Epson Stylus COLOR 800 Service Manual: Adjustment; Platen Gap (pg) Adjustment

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EPSON Stylus &RORU 800

4.2 Adjustment

This section provides detailed information on how to perform the adjustments listed below and the notice
headed under "CAUTION".
‰ Platen gap adjustment
‰ Customer data writing operation
‰ Initial ink charge
‰ Head voltage data writing operation
‰ Head angular adjustment
‰ BK-M Liner adjustment
‰ Head gap adjustment
‰ Bi-d adjustment

Platen Gap (PG) Adjustment

This adjustment is performed to obtain the appropriate gap between the head nozzle surface and the
platen, and is necessary when the parallelism adjust bushing has been set off the position during
disassembling and assembling. The standard value for the platen gap with this printer is 1.1 mm,
which is adjusted by inserting the thickness gauge between the head nozzle surface and platen then
turning the both left and right parallelism adjust bushings. This section describes how to adjust the PG gap
in the correct order along with cautions.
; Never touch the thickness gauge with your bare hand.
; Make sure there is no oil, foreign object, and rust on the thickness gauge.
; Check if your thickness gauge is not warped by checking it with the flat surface or new gauge.
Set the PG lever to "+" (wide) position and shift the CR unit left. Then place the thickness gauge by
sliding it from the rear (PF roller side) into the front. In this time, don't contact the thickness gauge to
the PF roller surface.
; Be sure to level the thickness gauge when placing it onto the diamond cut rib on the platen plate.
Set the PG lever to "0" (narrow) position and shift the CR unit from left to right or vice versa by
holding the upper side of the timing belt.
Printer Mechanism
Viewed from the Front
Black Head
Diamond Rib
Download Service Manual and Resetter Printer at
Color Head
Thickness Gauge
Figure 4-2. Thickness Gauge Setting
Printer Mechanism
Viewed from the Left Side
PF Roller
Thickness Gauge
Diamond Rib
Rev. A




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