Ricoh B230 Service Manual
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![Page 1167
Detailed Section Descriptions
SM 15 B792
B792
Finisher
2.2 DETAILED SECTION DESCRIPTIONS
2.2.1 OUTPUT TRAY MECHANISM
Stack Height Detection
Stack height detection lever [A]: Driven by stack height lever solenoid [B].
Two sensors detect the height of the stack in the output tray: the stack height [C] and lever
[D] sensors.
Stack height
sensor Lever
sensor Status
Off Off The stack height is below the target. The output tray
is then lifted to the target position.
Off On Target stack...](http://img.usermanuals.tech/thumb/64/100811/w64_b230-service-manual-1509630901_d-1166.png "Page 1167
Detailed Section Descriptions
SM 15 B792
B792
Finisher
2.2 DETAILED SECTION DESCRIPTIONS
2.2.1 OUTPUT TRAY MECHANISM
Stack Height Detection
Stack height detection lever [A]: Driven by stack height lever solenoid [B].
Two sensors detect the height of the stack in the output tray: the stack height [C] and lever
[D] sensors.
Stack height
sensor Lever
sensor Status
Off Off The stack height is below the target. The output tray
is then lifted to the target position.
Off On Target stack...")
![Page 1168
Detailed Section Descriptions
B792 16 SM
Output Tray Up/Down Mechanism
Overview
The output tray motor gear [A] lifts/lowers the tray if the stack height is not at the target
position.
Gears [B] and [C] keep the angle of the tray constant at any tray position.
Output Tray Downward Movement
The top of the paper stack is checked after every page (or set of pages) has been fed out.
If the top of the stack is higher than the target level, the output tray motor moves the tray
down.
When the...](http://img.usermanuals.tech/thumb/64/100811/w64_b230-service-manual-1509630901_d-1167.png "Page 1168
Detailed Section Descriptions
B792 16 SM
Output Tray Up/Down Mechanism
Overview
The output tray motor gear [A] lifts/lowers the tray if the stack height is not at the target
position.
Gears [B] and [C] keep the angle of the tray constant at any tray position.
Output Tray Downward Movement
The top of the paper stack is checked after every page (or set of pages) has been fed out.
If the top of the stack is higher than the target level, the output tray motor moves the tray
down.
When the...")
![Page 1169
Detailed Section Descriptions
SM 17 B792
B792
Finisher
2.2.2 PAPER FEED
When a sheet of paper is fed, it is transported through the 500-sheet finisher as shown in
these drawings.
To feed paper straight through the finisher, the pick-up roller [A] stays up.
To send the paper to the jogger tray [B], when the trailing edge is almost out of the finisher,
the pick-up roller moves down until the reverse/exit roller in the pick-up roller pushes the
paper against the paddle roller [C]. The...](http://img.usermanuals.tech/thumb/64/100811/w64_b230-service-manual-1509630901_d-1168.png "Page 1169
Detailed Section Descriptions
SM 17 B792
B792
Finisher
2.2.2 PAPER FEED
When a sheet of paper is fed, it is transported through the 500-sheet finisher as shown in
these drawings.
To feed paper straight through the finisher, the pick-up roller [A] stays up.
To send the paper to the jogger tray [B], when the trailing edge is almost out of the finisher,
the pick-up roller moves down until the reverse/exit roller in the pick-up roller pushes the
paper against the paddle roller [C]. The...")
![Page 1170
Detailed Section Descriptions
B792 18 SM
2.2.3 JOGGER MOVEMENT
The jogger tray unit consists of the front [A] and rear [B] jogger fences, two jogger motors
[C] and two jogger fence HP sensors [D].
Standby mode:
The jogger fences are placed at home position.
Sort mode:
The joggers move alternate sets to the front and rear, to separate the sets for the users.
At the start of the job, the jogger fences move to the front and rear sides.
When the first set of the job is fed to the jogger tray,...](http://img.usermanuals.tech/thumb/64/100811/w64_b230-service-manual-1509630901_d-1169.png "Page 1170
Detailed Section Descriptions
B792 18 SM
2.2.3 JOGGER MOVEMENT
The jogger tray unit consists of the front [A] and rear [B] jogger fences, two jogger motors
[C] and two jogger fence HP sensors [D].
Standby mode:
The jogger fences are placed at home position.
Sort mode:
The joggers move alternate sets to the front and rear, to separate the sets for the users.
At the start of the job, the jogger fences move to the front and rear sides.
When the first set of the job is fed to the jogger tray,...")
![Page 1171
Detailed Section Descriptions
SM 19 B792
B792
Finisher
2.2.4 STAPLER UNIT MOVEMENT
Overview
The stapler unit [A] is driven by the stapler unit movement motor [B]. The stapler unit HP
sensor [C] detects when the stapler is at home position. The stapler unit stays at its home
position in stand-by mode.
This finisher has three types of stapling. The stapler unit moves as shown: one staple at
the rear corner [D], one staple at the front corner [E] and two staples [F].](http://img.usermanuals.tech/thumb/64/100811/w64_b230-service-manual-1509630901_d-1170.png "Page 1171
Detailed Section Descriptions
SM 19 B792
B792
Finisher
2.2.4 STAPLER UNIT MOVEMENT
Overview
The stapler unit [A] is driven by the stapler unit movement motor [B]. The stapler unit HP
sensor [C] detects when the stapler is at home position. The stapler unit stays at its home
position in stand-by mode.
This finisher has three types of stapling. The stapler unit moves as shown: one staple at
the rear corner [D], one staple at the front corner [E] and two staples [F].")
![Page 1172
Detailed Section Descriptions
B792 20 SM
Disabling the Stapling Mechanism
The stapler unit moves from front to rear. But there are three end fences [A] on the jogger
tray unit in the stapler unit path. In order not to staple these fences, the stapler unit has the
end fence detection sensor [C]. When the stapler unit passes the end fence, the end fence
pushes the actuator [B], and then the sensor detects the end fence. While this sensor
detects the end fence, stapling is disabled.
2.2.5 JAM...](http://img.usermanuals.tech/thumb/64/100811/w64_b230-service-manual-1509630901_d-1171.png "Page 1172
Detailed Section Descriptions
B792 20 SM
Disabling the Stapling Mechanism
The stapler unit moves from front to rear. But there are three end fences [A] on the jogger
tray unit in the stapler unit path. In order not to staple these fences, the stapler unit has the
end fence detection sensor [C]. When the stapler unit passes the end fence, the end fence
pushes the actuator [B], and then the sensor detects the end fence. While this sensor
detects the end fence, stapling is disabled.
2.2.5 JAM...")
Detailed Section Descriptions SM 19 B792 B792 Finisher 2.2.4 STAPLER UNIT MOVEMENT Overview The stapler unit [A] is driven by the stapler unit movement motor [B]. The stapler unit HP sensor [C] detects when the stapler is at home position. The stapler unit stays at its home position in stand-by mode. This finisher has three types of stapling. The stapler unit moves as shown: one staple at the rear corner [D], one staple at the front corner [E] and two staples [F].
Detailed Section Descriptions B792 20 SM Disabling the Stapling Mechanism The stapler unit moves from front to rear. But there are three end fences [A] on the jogger tray unit in the stapler unit path. In order not to staple these fences, the stapler unit has the end fence detection sensor [C]. When the stapler unit passes the end fence, the end fence pushes the actuator [B], and then the sensor detects the end fence. While this sensor detects the end fence, stapling is disabled. 2.2.5 JAM CONDITIONS Sensors Conditions Remaining paper detection Entrance Exit Either the entrance or exit sensor detects paper just after the unit is initialized. Non-feed at the entrance Entrance The entrance sensor is not activated within a certain period after the paper exit sensor detects paper. Jamming at the entrance Entrance The entrance sensor is not de-activated after paper is fed 1.3 times the length of the paper. Non-feed inside the unit (Straight feed out mode only) Exit The exit sensor is not activated within a certain period after the entrance sensor detects paper. Jamming at the exit Exit The exit sensor is not de-activated after paper is fed for a certain period. Jogger tray Exit The exit sensor is de-activated during paper shifting or stapling.
Detailed Section Descriptions SM 21 B792 B792 Finisher 2.2.6 ERROR DETECTION Conditions Jogger motor error The jogger home position sensor does not shut off after the jogger motor starts. Jogger motor home position detection error The jogger home position sensor does not turn on after paper shifting. Stapler error The stapler home position sensor (inside the stapler unit) does not turn on after stapling. Output tray upper limit error The tray upper limit sensor is activated. Output tray motor error The output tray is away from the target position for more than 10 seconds. Stack height detection error The stack height detection lever does not return to its home position before going to detect the stack height. ƒ The above errors are indicated as “Finisher jam” at the first occurrence. ƒ If the same error happens again in the next job, “finisher error” is indicated.
SM i B793 Read This First Safety and Symbols Replacement Procedure Safety ƒ Turn off the main power switch and unplug the machine before beginning any of the replacement procedures in this manual. When taking apart the bridge unit, first take the unit out of the copier. Symbols Used in this Manual This manual uses the following symbols. : See or Refer to : Screws : Connector : Clip ring : E-ring
B793 ii SM B793 TABLE OF CONTENTS Read This First............................................................................................................ i Safety and Symbols ......................................................................................... i Replacement Procedure Safety .................................................................... i Symbols Used in this Manual ........................................................................i Table of Contents...................................................................................................... ii 1. Replacement and Adjustment..................................................................... 1 Covers............................................................................................................. 1 Front/Inner/Rear Covers .............................................................................. 1 Upper Covers ............................................................................................... 2 Main Body .......................................................................................................4 Positioning Roller......................................................................................... 4 Shift Tray Position Sensor, Upper Limit Switch ............................................ 4 Proof Tray Exit / Full Sensor......................................................................... 5 Finisher Entrance Sensor............................................................................. 6 Shift Tray Exit Sensor ................................................................................... 7 Staple Tray Paper Sensor ............................................................................ 8 Shift Tray Motor ............................................................................................ 8 Entrance Motor............................................................................................. 9 Upper Transport Motor ................................................................................. 9 Lower Transport Motor ............................................................................... 10 Shift Motor ...................................................................................................11 Folder............................................................................................................ 12 Staple Folder Unit....................................................................................... 12 Folder Unit.................................................................................................. 13 Folder Unit Exit Sensor .............................................................................. 14 Folder Unit Entrance Sensor...................................................................... 15 Stapler Unit................................................................................................. 15 Others ........................................................................................................... 26 Main Board ................................................................................................. 26 DIP Switches ................................................................................................. 27
SM iii B793 2. Detailed Section Descriptions.................................................................. 28 Component Layout........................................................................................ 28 Mechanical Component Layout .................................................................. 28 Drive Layout ............................................................................................... 29 Electrical Component Layout .....................................................................30 Electrical Component Descriptions ............................................................ 34 Junction Gates .............................................................................................. 39 Proof Tray......................................................................................................40 Shift Tray .......................................................................................................41 Up/Down Motion......................................................................................... 41 Side-to-side Motion.................................................................................... 42 Booklet Tray .................................................................................................. 43 Jogger Unit .................................................................................................... 46 Exit Guide Plate, Paper Feed Out ................................................................. 47 Stapler Unit Movement .................................................................................. 48 Stacking for Booklet Stapling ......................................................................... 49 Overview .................................................................................................... 49 8. 5 x 14 (Legal) or Shorter ........................................................................ 49 Longer Than 8.5 x 14 Inches......................................................................50 Moving the Stack to the Folding Position....................................................... 52 Folder............................................................................................................ 53 Overview .................................................................................................... 53 Fold Plate ................................................................................................... 53 Fold Rollers ................................................................................................ 54 Punch Unit.....................................................................................................55 Overview of Operation ............................................................................... 55 Paper Position Detection............................................................................ 57 Punch Unit Movement ................................................................................ 58 Punch Selection and Firing ........................................................................ 58 Punch Hopper Mechanism ......................................................................... 59