Oki TF-300P, Field Service Manual

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5-6
(3) Loosen 1 piece of M2.6X5 tapping screw on right side for fix Cover Switch Sensor then
move Cover Switch Sensor.
(4) I.S. Platen Asesmbly
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Face white I.S. Platen Asm., Gear is located on left side. With a straight screwdriver, pull
upward the snap of bushings( green )at the left and right ends of I.S. Platen , and grip
bushings with both hands and rotate it upward to vertical direction then take I.S. Platen
Asm. out.
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Use finger to release the Snap of Gear then Gear can be separated from the shaft of I.S.
Platen.
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Use small straight screwdriver to pick E-Ring on both side of I.S. Platen then take out left
and right bushing.
(5) Loosen 1 piece of M2.6X5 tapping cap screw on spindle of gear than take out 1 piece of
70/20 gear and 2 pieces of 36/20 gear.
(6) I.S. Asesmbly
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Compress both hinges of the I.S. assembly a bit and push the I.S. assembly from left to
right until the left hinge can be separated with its spindle on the scanner frame, remove
the I.S. assembly from left slantwise.
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Separated I.S. Cable from Tie Mount and pull out the connector of the I.S. cable.
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Release 4 pieces of M2.6X6 tapping screw on both side of I.S. Asm. then these two
Hinges can be separated from I.S.
(7) Loosen 2 pieces of M3X6 taptite screw for fixing I.S. Motor. Separate the cable of Motor
then I.S. Motor can be taken out from Lower Frame.
(8) With a straight screwdriver , pull upward the snap of bushings( black) at the left and right
ends of the A.D.F shaft, and grip bushings with both hands to take A.D.F. assembly out.
(9) Remove a black bushing on one side of the A.D.F assembly. Release the “E” ring on the
outside of gear by straight screwdriver, takes out clutch gear, clutch spring, clutch bushing
and another black bushing.
(10) With a straight screwdriver, press the both side of Flat Spring-IS then Flat Springs can be
picked out of Lower Frame.
(11) Separate Snap Rivet and flat Spring.
5.3.9 Upper Frame Unit.
(1) Ground Wire
Loosen 1 piece of M3X6 tapping screw. Pull out the ground wire pin of Separation Asm then
ground wire can be taken out.
(2) Spring Hook
Loosen both side of M3X6 tapping screws then both spring -hook can be taken out.
(3) A.D.F. sensor Asm.
Release snap-in fingers of ADF sensor assembly by a straight screwdriver then remove the
ADF sensor Asm.
(4) DOC. sensor Asm.
Release snap-in fingers of DOC. sensor assembly by a straight screwdriver then remove the
DOC. sensor Asm.
(5) Separation Asm.
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Take out A.D.F. Extension Spring from Upper Frame.
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With a straight screwdriver, take out Separation Asm.
(6) Push up clamping plate then separation plate and backing plate can be pulled out.CIRCUIT
DISCRIPTION