Nantian Electronics PR9 ES, Service Manual

Page: 101 / 112

PR9 Service Manual
Page 96 of 102
6.3.15 POWER SUPPLY ASSY DISASSEMBLY/REASSEMBLY
Remove the mechanical assembly (6.3.4)
Unplug the power supply cable (1) from the main board.
Unscrews the four screws that secure the power supply and also remove the
ground wires.
Loosen the two screws that secure the switch.
Extract the power supply assy.
Note: During reassembly, make sure that you correctly reposition the ground
cables.
6.3.16 FEEDER PHOTOSENSORS DISASSEMBLY/REASSEMBLY
Remove the mechanical assembly.
Unscrews the eight screws that left 4 and right four then Remove the white
paper feed platform.
Remove the clasp, the black plate and the white gear that secures the square
shaft in left which under the photo sensors and also remove another in the
opposite.
Remove the plastic axle sleeve that secures the square shaft.
Remove the clasp that secures the paper feed roller in left and right. Remove
the black plate and the gear.
Remove the copper axle sleeve
Remove the pressure sensor cable (blue) connector from the front feeder
photo sensors board.
Remove the white plastic cover that covers the front feeder photo sensors after
removing its four screws.
Remove the front feeder photo sensors by pulling its paper feed roller and
square shaft out, using your left and right hand.
Remove the square shaft. .
Unscrew the four screws that secure the feeder photo sensors board and then
remove the feeder photo sensors board, the document stop bar slide-proof fins
and paper feed roller.
NOTE:
1. During reassembly, make sure to correctly reposition the two springs.
2. There are two plastic plate the one have notch must assembling inside
that secures the paper feed roller however another must out side.