Ricoh B230 Service Manual

Component Layout 
SM 31 B793 
B793 
Booklet 
Finisher 
 
 
13. Proof Tray Gate Solenoid 
14. Lower Transport Motor 
15. Entrance Motor 
16. Positioning Roller Solenoid 
17. Main Board 
18. Shift Tray Motor 
19. Lower Limit Sensor 
20. Upper Cover Sensor 
21. Staple Tray Gate Solenoid 
22. Upper Transport Motor 
23. Shift Motor 
24. Shift Motor HP Sensor  

B793 32  SM 
 
 
38. Fold Unit Exit Sensor 
39. Lower Clamp Roller HP Sensor 
40. Lower Retraction Motor 
41. Fold Unit Entrance Sensor 
42. Bottom Fence HP Sensor 
43. Fold Cam HP Sensor 
44. Fold Roller Motor 
45. Fold Plate HP Sensor 
46. Fold Plate Motor 
47. Bottom Fence Lift Motor  

Component Layout 
SM 33 B793 
B793 
Booklet 
Finisher 
 
 
48. Punch Motor 
49. Punch Encoder Sensor 
50. Punch HP Sensor 
51. Punch Board 
52. Paper Position Sensor Slide Motor  
53. Paper Position Slide HP Sensor 
54. Paper Position Sensor 
55. Punch Movement HP Sensor 
56. Punch Hopper Full Sensor 
57. Punch Movement Motor 
 
  

B793 34  SM 
Electrical Component Descriptions 
Boards 
Item No.Purpose 
Main Board  17  Controls the finisher. 
Punch Board  51  Controls the punch unit. 
Sensors 
Item No.  Purpose 
Proof Tray 
Exit Sensor 1  Detects paper when it is fed out to the proof tray. 
Shift Tray 
Exit Sensor 3  Detects paper when it is fed out to the shift tray. 
Shift Tray 
Position 
Sensor 5  Detects when the shift tray is at the correct height to receive paper. 
Rear 
Booklet 
Tray Full 
Sensor 6 One of two sensors that...

Component Layout 
SM 35 B793 
B793 
Booklet 
Finisher 
Item No.  Purpose 
Stopper S 
HP Sensor 28  Detects when the ‘stopper S’ mechanism is at home position. 
Stack Feed 
Out HP 
Sensor 29  Detects when the stack feed-out belt is at home position 
Staple Unit 
HP Sensor 30 Detects when the side-to-side motion of the stapler unit is at home 
position 
Jogger HP 
Sensor 34  Detects when the jogger unit is at home position 
Staple Tray 
Paper 
Sensor 35  Detects when paper is fed into the stapler tray...

B793 36  SM 
Item No.  Purpose 
Punch HP 
Sensor 50  Detects when the hole-punch firing mechanism is at home position 
Paper 
Position 
Slide HP 
Sensor 53 Detects when the mechanism that measures the paper position in the 
punch unit is at home position 
Paper 
Position 
Sensor 54 Detects the side edge of the paper, to tell the machine where to put 
the punch holes. 
Punch 
Movement 
HP Sensor 55 Detects when the side-to-side motion of the punch unit is at home 
position. 
Punch 
Hopper Full 
Sensor 56...

Component Layout 
SM 37 B793 
B793 
Booklet 
Finisher 
Item No. Purpose 
Clamp 
Roller Motor 
Stapler Unit 
Motor 36  Moves the stapler from side to side. 
Lower 
Retraction 
Motor 40 Drives a large cam that alternately clamps and unclamps the lower 
clamp roller, which is 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...

B793 38  SM 
Item No. Purpose 
Front Door 
Safety Switch 11  Cuts dc power when the front door is opened. 
Others 
Item No. Purpose 
Staple Driver Unit  31  Pushes the staples into the paper. 
Staple Folder Unit  32  Folds the ends of the staples after stapling 
  

Junction Gates 
SM 39 B793 
B793 
Booklet 
Finisher 
2.2 JUNCTION GATES 
Two junction gates control the path of paper. 
Each junction gate is controlled by a solenoid. 
Junction gate operation is summarized in the following table. 
 
Mode Proof Shift Staple 
Paper Path 
Proof Tray  
Gate Solenoid ON OFF OFF 
Staple Tray  
Gate Solenoid OFF OFF  ON 
  

B793 40  SM 
2.3 PROOF TRAY 
 
Proof Tray Junction Gate Control [A]: Proof Tray Gate Solenoid 
Roller Drive:  
ƒ  Proof Tray Exit Roller [B], Proof Tray Transport Roller [C]: Controlled by the Upper 
Transport Motor 
ƒ  Entrance Roller [D], Transport Roller [E]: Controlled by the Entrance Motor  
Jam Detection: Proof Tray Exit Sensor [F] 
Tray Full Detection: Proof Tray Full Sensor [G]