Ricoh B230 Service Manual

Paper Transport and Paper Reverse/Exit Motors 
SM 9 B792 
B792 
Finisher 
1.9 PAPER TRANSPORT AND PAPER 
REVERSE/EXIT MOTORS 
 
1.  Rear cover (
 Rear Cover) 
2.  Harness guide [A] (hook x 3) 
3.  Control board [B] (
 x 2, All s) 
 
4.  Paper transport motor bracket [C] (
 x 2, spring x 1,  x 1) 
5.  Paper transport motor [D] (
 x 2) 
6.  Paper reverse/exit motor bracket [E] (
 x 2, spring x 1,  x 1) 
7.  Paper reverse/exit motor [F] (
 x 2)  

Output Tray Unit 
B792 10  SM 
1.10  OUTPUT TRAY UNIT 
 
1. Output tray (
 Main Frame) 
2.  Output tray cover [A] (
 x 2) 
3.  Tray holder [B] (
 x 1) 
4.  Connector cover [C] 
5.  Output tray motor link unit [D] (
 x 1) 
6.  Rear cover [E] (
 x 1) 
7.  Output tray motor [F] (
 x 1) 
 
 
ƒ  When re-attaching the motor link unit, the arrows on each of the gears need to 
face each other as shown in the illustration.  

Overall Machine Information 
SM 11 B792 
B792 
Finisher 
2. DETAILED  DESCRIPTIONS 
2.1 OVERALL MACHINE INFORMATION 
2.1.1 COMPONENT LAYOUT 
Mechanical Component Layout 
 
 
1. Output tray 
2. Stack height detection lever 
3. Stack height lever solenoid 
4 .Stapler unit movement motor 
5. Stapler unit 6. Entrance sensor 
7. Entrance roller 
8. Belt unit 
9. Pick-up roller  
10. Paddle roller 
  

Overall Machine Information 
B792 12  SM 
Drive Layout 
 
 
1. Paper transport motor 
2. Pick-up roller motor 
3. Output tray motor 
4. Output tray link gears 5. Stapler unit movement motor 
6. Pick-up roller contact motor 
7. Paddle roller 
8. Pick-up roller 
  

Overall Machine Information 
SM 13 B792 
B792 
Finisher 
2.1.2  ELECTRICAL COMPONENT LAYOUT 
 
 
1. Lever Sensor 
2. Paddle Roller Solenoid 
3. Stack Height Sensor 
4. Stack Height Lever Solenoid 
5. Stapler Unit HP Sensor 
6. Stapler Unit Movement Motor 7. Pick-Up Roller Contact Motor 
8. Cover Switch 
9. Pick-Up Roller HP Sensor 
10. Top Cover Sensor 
11. Stapler Safety Sensor 
12. Entrance Sensor 
  

Overall Machine Information 
B792 14  SM 
 
 
13. Belt Lift Sensor 
14. Paper Transport Motor 
15. Pick-up Roller Motor 
16. Control Board 
17. Output Tray Motor 
18. Stack Near-limit Sensor 
19. Tray Upper Limit Sensor 20. Front Jogger Fence HP Sensor 
21. Front Jogger Motor 
22. Rear Jogger Fence HP Sensor 
23. Rear Jogger Motor 
24. Jogger Position Sensor 
25. Belt Lift Solenoid 
  

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...

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...

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...

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,...