Safer PR90 Maintenance Manual page 105

Globalis International
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 photosensors 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 photosensors board.
－ Remove the white plastic cover that covers the front feeder
photosensors after removing its four screws.
－ Remove the front feeder photosensors 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 photosensors board and
then remove the feeder photosensors 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.
PR9 SERVICE MANUAL-VER1.1 Page 105 of 112