Epson DFX-9000 Service Manual page 232

Epson DFX 9000
2. Hold Gear C immobile with your finger, and slowly rotate Gear B
back and forth. Check that the backlash level you could sense while
rotating Gear B is about 0.03 ~ 0.07 mm.
3. If the backlash level is appropriate, tighten the screws to secure the
APTC UNIT in that position. If the backlash is too small and both
gears are engaged too tightly, go back to step 1, move the APTC
UNIT slightly in the opposite direction (upward), and continue with
step 2.
Adjustment Procedure using the APG Gauge Jig
1. Mount the APG Gauge Jig, as shown in figure below.
APG Gauge Jig
Fastening bolts
Figure 5-4. Mounting the APG Gauge Jig
Adjustment
2. Verify that the reference pin on the side frame is in the positioning
hole of APTC UNIT. Loosen the two screws that secure the unit, and
push it gently downward so that Gear B is correctly contacting Gear
C. Lightly tighten the screws to temporarily secure its position.
Adjustment
direction
Screw
Gear B
Gear C
(SS Gear)
Screw
Figure 5-5. APTC Unit Mount Position Adjustment
Hardware adjustment
Revision B
Reference Pin
Positioning hole
APTC UNIT
Pivot point
225