Toshiba e-STUDIO 4500c, Service Manual

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August 2006 ELECTRICAL COMPONENTS
B700-31
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2.2.6 SUMMARY OF ELECTRICAL COMPONENTS
Here is a general summary of all the electrical components of the B700/B701
finishers.
NOTE: In the table below a number that appears in bold text (M8, etc.) denotes a
component that is on the 2000/3000 Sheet Finisher B700 only.
No. Component Function
Boards (PCB)
PCB1 Main Board The main board that controls the finisher
PCB2 Booklet Stapler Board A separate board that controls booklet finishing.
PCB3 Punch Unit Board The board that controls the punch unit.
Motors
M1 Finisher Entrance Motor Drives 1) the finisher entrance rollers, 2) and the punch
waste transport belt of the punch unit.
M2 Upper Transport Motor Drives the paper feed rollers that feed paper 1) to the proof
tray, 2) straight-through to the upper tray, 3) the pre-stack
tray entrance roller.
M3 Lower Transport Motor Drives paper feed rollers forward and reverse in the pre-stack
tray for the switchback, and drives the other rollers in the
lower transport area.
M4 Upper/Proof Tray Exit
Motor
Drives 1) proof tray exit rollers, 2) extension and retraction of
the stacking sponge roller, 3) upper tray exit rollers.
M5 Feed Out Belt Motor
Drives the feed out belt that moves the stapled stacks out of
the stapling tray after stapling.
M6 Corner Stapler
Movement Motor
Moves the corner stapler horizontally on a steel rod to
position the stapler at the stapling position at 1) the front, 2)
the rear (straight stapling), 3) the rear (diagonal stapling), or
4) the front and rear for double stapling.
M7 Paper Position Sensor
Slide Motor
Drives the movement of the paper position slide that holds
the paper position sensor (S3) that detects the position of the
paper.
M8 Clamp Roller Retraction
Motor Drives a large cam that alternately clamps and unclamps the
clamp retraction roller, the idle roller of the clamp roller pair.
When these rollers are clamped, they are part of the paper
feed path and feed the stack toward the bottom fence of the
fold unit. When the idle roller is retracted, the stacks falls a
very short distance (3 mm) onto the fold unit bottom fence
below. These rollers remain unclamped while the bottom
fence positions the stack for folding and while the stack is
folded by the fold rollers.
M9 Punch Movement Motor Drives the front/back movement of the punch unit to position
it correctly for stapling the paper below.
M10 Stacking Sponge Roller
Motor Rotates the stacking roller that drags each sheet back
against the end fence to jog the bottom of each sheet after
feed out to the upper tray.
M11
Fold Plate Motor Drives the fold plate that pushes the center of the stack into
the nip of the fold rollers to start the fold.
M12 Fold Roller Motor Rotates forward and drives the fold rollers that fold the stack
and feed it out of the fold unit, reverses to feed the fold once
more into the fold unit, and then rotates forward again to feed
the fold out of the fold unit.