Epson DFX-9000 - APTC UNIT Mount Position Adjustment

Epson DFX 9000 Revision B
Adjustment Hardware adjustment 224
5.2.3 APTC UNIT mount position adjustment
Summary
This procedure adjusts the backlash between a gear on the APTC Unit
(Gear B) and the SS Gear on the end of the carriage guide shaft (Gear
C). It is required after you remove or replace these parts:
 CARRIER UNIT
 APTC UNIT
 APTC HP UNIT
 PJS ROLER ASSY
 PJS HOLDER ASSY
Tools / materials: APG Gauge Jig
Objective: Backlash level = 0.03 ~ 0.07 mm between Gear B and
Gear C
Adjustment Procedure
1. Verify that the reference pin on the side frame is in the positioning
hole of the APTC UNIT. Loosen the two screws that secure the unit,
and push it downward so that Gear B is correctly contacting Gear C.
Lightly tighten the screws to temporarily secure its position.
Figure 5-3. APTC Unit Mount Position Adjustment
C H E C K
P O I N T
It is not mandatory to use the APG Gauge Jig for this
adjustment. If the tool is used, however, the gear backlash
level can be verified as a value on the Dial-Gauge.
Gear backlash: 0.03 ~ 0.07 mm = Dial gauge (APG Gauge
Jig) reading of 0.002 ~ 0.006 mm, or about 1/2 the distance
between two of the smallest (0.01 mm) markings on the
dial.
W A R N I N G
Turn the printer off and disconnect the AC cable before you
perform the following work.
C H E C K
P O I N T
Before performing this adjustment, remove these parts.
 Ribbon Cartridge
 FRONT COVER ASSY
 REAR UNIT
 OP UNIT
 UPPER UNIT
 PRINT HEAD
Positioning hole
Pivot point
Reference Pin
Adjustment
direction
Screw
Gear B
Gear C
(SS Gear)
Screw
APTC UNIT