Ricoh Mp C3000 Service Manual

							DIP Switches 
SM 27 B793 
B793 
Booklet 
Finisher 
1.5 DIP SWITCHES 
SW100: Adjust  the  staple  position for booklet mode 
No. Function 
1  ON: 0.3 mm 
2  ON: 0.6 mm 
3  ON: 1.2 mm 
4 Direction  
OFF: Towards the trailing edge, ON: Towards the leading edge 
 
SW101: Adjust the fold position 
No. Function 
1  ON: 0.2 mm 
2  ON: 0.4 mm 
3  ON: 0.8 mm 
4 Direction  
OFF: Towards the trailing edge, ON: Towards the leading edge 
 
SW102: Move the tray position 
No. Function 
1 OFF 
→ ON  → OFF 
Turn the switch from off to on, then turn it  to off again. Then, the tray moves down to 
the shipping position 
2 Not used 
 
ƒ  After you change any of these dip switch  settings, open and close the finisher 
cover to activate the new setting. It is not  necessary to turn the main power off/on.   
						

							Component Layout 
B793 28  SM 
2. DETAILED SECTION DESCRIPTIONS 
2.1 COMPONENT LAYOUT 
2.1.1  MECHANICAL COMPONENT LAYOUT 
 
 
1. Proof Tray  2. Shift Tray  3. Exit Guide Plate 
4. Stack Feed Out Belt  5. Staple Unit  6. Booklet Tray 
7. Proof Tray Exit Roller  8. Proof Tray Junction Gate  9. Punch Unit 
10. Staple Tray Junction  
      Gate  11. Positioning Roller  12. 1st Clamp Roller 
13. 2nd Clamp Roller  14. Folder Plate  15. Folder Roller 
  
						

							Component Layout 
SM 29 B793 
B793 
Booklet 
Finisher 
Drive Layout 
 
1. Upper Transport Motor 
2. Entrance Motor 
3. Lower Transport Motor 
4. Fold Plate Motor 
5. Fold Roller Motor 
6. Stack Feed-out Motor  
						

							Component Layout 
B793 30  SM 
 
2.1.2  ELECTRICAL COMPONENT LAYOUT 
 
 
1. Proof Tray Exit Sensor 
2. Exit Guide Plate Motor 
3. Shift Tray Exit Sensor 
4. Upper Limit Switch 
5. Shift Tray Position Sensor 
6. Rear Booklet Tray Full Sensor 
7. Front Booklet Tray Full Sensor 
8. Proof Tray Full Sensor 
9. Exit Guide Plate HP Sensor 
10. Entrance Sensor 
11. Front Door Safety Switch 
12. Staple Tray Exit Sensor 
  
						

							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  
						

							Component Layout 
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 
 
  
						

							Component Layout 
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 the ma
chine uses to determine when the 
booklet tray is full. 
Front 
Booklet 
Tray Full 
Sensor  7 
One of two sensors that the ma
chine uses to determine when the 
booklet tray is full. 
Proof Tray 
Full Sensor  8  Detects when the proof tray is full. 
Exit Guide 
Plate HP 
Sensor 9  Detects when the exit guide plate is at home position 
Entrance 
Sensor 
10  Detects when paper comes into the finisher 
Staple Tray 
Exit Sensor  12  Detects paper leaving the bottom of the stapler 
Lower Limit 
Sensor 19 
Detects when the shift tray has moved to its lowest possible position 
(the shift tray is full). 
Upper 
Cover 
Sensor  20  Detects when the upper cover is open 
Shift Motor 
HP Sensor 
24 
Detects when the side-to-side motion of the shift roller is at home 
position  
						

							Component Layout 
SM 35 B793 
B793 
Booklet 
Finisher 
Item No.  Purpose 
Stopper S 
HP Sensor  28  Detects when the ‘stopper S’ me
chanism 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 
Stapler 
Safety 
Sensor 37 Stops side-to-side movement of the stapler until stopper S and the 
stack feed-out pawl mechanisms are at home position, to prevent 
damage to the machine. 
Fold Unit 
Exit Sensor 
38 1) Detects the folded edge of the stac
k as it feeds out from the nip of 
the fold rollers so the fold feeds  back into the nip, 2) when the folded 
booklet finally emerges from the nip  of the fold rollers, detects the 
leading and trailing edge of  the booklet to make sure that it feeds out 
correctly. 
Lower 
Clamp 
Roller HP 
Sensor  39  Detects when the lower clam
p roller is at home position 
Fold Unit 
Entrance 
Sensor 41 Detects 1) the leading edge of the stack during booklet stapling, and 
2) also used to signal an alarm if 
a paper is detected at the entrance 
of the fold unit when the copier is turned on. 
Bottom 
Fence HP 
Sensor  42 
Detects when the bottom fence of the booklet folding mechanism is at 
home position 
Fold Cam 
HP Sensor 
43 Along with the fold plate HP sens
or, this sensor controls the 
movement of the fold plate. T he actuator mounted on the end of the 
roller that drives the folder plate forward and back makes three full 
rotations, i.e. the actuator passe s the sensor gap twice and stops on 
the 3rd rotation and reverses. This  accounts for the left and right 
movement of the fold plate. 
Fold Plate 
HP Sensor  45 Along with the fold plate HP sens
or this sensor controls the 
movement of the fold plate. The  fold plate has arrived at the home 
position when the edge of the plat e enters the gap of this sensor. 
Punch 
Encoder 
Sensor 49 
Controls the timing for activating t
he punches, to punch holes in the 
paper at the correct position.  
						

							Component Layout 
B793 36  SM 
Item No.  Purpose 
Punch HP 
Sensor 50  Detects when the hole-punch firi
ng mechanism is at home position 
Paper 
Position 
Slide HP 
Sensor 53 
Detects when the mechanism that m
easures 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 
Detects when the punch hopper is full. Also checks if the hopper is 
installed correctly. 
Motors 
Item No. Purpose 
Exit Guide 
Plate Motor  2  Controls the exit guide plate mechanism. 
Lower 
Transport 
Motor 14 
Controls the positioning roller, and ot
her rollers in the finisher (see 
‘Drive Layout’ for details). 
Entrance 
Motor  15  Controls the rollers at t
he entrance of the finisher. 
Shift Tray 
Motor 18  Moves the shift tray up and down. 
Upper 
Transport 
Motor 22 
Controls the rollers that feed paper 
from the junction gate to the proof 
tray and to the shift tray (see ‘Drive Layout’ for details). 
Shift Motor  23  Moves the shift tray from side to side. 
Stack Feed 
Out Motor  25  Controls the stack feed-out belt 
Jogger 
Motor 26  Controls the jogger in the stapler tray 
Upper 
Retraction 
Motor 27 
Controls the ‘stopper S’ mechani
sm. Also moves the upper clamp 
roller into contact and away from the stack of paper in the stapler tray.
Upper  33  Rotates the upper clamp roller.