Epson Stylus Pro 4400 Service Manual page 379

EPSON Stylus Pro 4400/4450/4800/4880/4880C
4. No adjustment is necessary if the measurement value is within the
standard value. If the value is outside the standard value, use the
following procedure to adjust the tension until it reaches the standard
value.
5. Loosen the 2 screws fixing "Plate, Motor PF" by the amount shown
below, and then adjust the timing belt tension by sliding "Plate, Motor
PF".
(+) Bind S-tight with plane washers 2 3x8, F/Zn
Shaft, Installation Plate, CR
6. After completing adjustment, tighten the 2 screws and measure
tension again.
7. After the measurement value has reached the standard value, check
the results by repeating the measurement 3 times.
Adjustment
: 1/4~2/4 turn
: 1/8 turn
Mechanical Adjustment
(+) Bind S-tight with plane washers 2
Plate, Motor, PF
Shaft, Installation Plate, CR
Figure 5-7. PF Timing Belt Tension Adjustment
Revision C
379