Ricoh Mp C3000 Service Manual

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...

Component Layout 
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 contro l 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 
  

Proof Tray 
B793 40  SM 
2.3 PROOF TRAY 
 
Proof Tray Junction Gate Contro l [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]  

Shift Tray 
SM 41 B793 
B793 
Booklet 
Finisher 
2.4 SHIFT TRAY 
2.4.1 UP/DOWN MOTION 
 
The shift tray motor [A] moves the tray up and down. 
The upper limit switch [B] detects when the tr ay moves up too far, and cuts power to the 
shift tray motor. 
The shift tray position sensor [C ] checks when the tray (or the top of the stack) is at the 
correct height to receive paper. 
ƒ  Shift Mode: This is checked every 5 sheets  
ƒ  Staple Mode: This is checked every stack  
The lower limit sensor [D] detects...

Shift Tray 
B793 42  SM 
2.4.2 SIDE-TO-SIDE MOTION 
 
The shift motor [A] moves the shift roller [B] from side to side. 
The shift motor HP sensor [C] detects  when the mechanism is at home position. 
The upper transport motor rotates the shift roller. 
When shift mode is used, the shift motor turns on after each page is  fed out. Then, for the 
next set, the shift motor turns the other way. In  this way, the user can easily divide the sets.  

Booklet Tray 
SM 43 B793 
B793 
Booklet 
Finisher 
2.5 BOOKLET TRAY 
 
The sensor actuator arm [A] re sts on the top of the stack of stapled booklets as they are 
output to the lower tray. A flap depressor [B ] keeps the open ends of the booklets down. 
The front booklet tray full sensor [C] and r ear booklet tray full sensor [D] detect when the 
tray is full of booklets.  
 
ƒ  The front booklet tray full sensor is  mounted higher than the rear booklet tray full 
sensor. 
ƒ  The booklet tray is...

Booklet Tray 
B793 44  SM 
 
Condition Front Sensor Rear Sensor 
Ready ON OFF 
Full 1 ON ON 
Full 2  OFF ON 
Full 3 (or booklet tray not 
installed)  OFF OFF 
 
In the tables below: 
ƒ  Sht denotes sheets in a stack. 
ƒ  Cnt denotes Count (see below for an explanation).  
After a booklet is feed out, the fold roller mo
tor stops the exit roller. The machine then 
monitors the tray full sensors every feed-out of a paper stack. The machine checks a 
certain condition, based on the si ze of the paper and...

Booklet Tray 
SM 45 B793 
B793 
Booklet 
Finisher 
- Examples -  
After the copier makes a booklet with 1 sheet of 11 x 17 inch paper, the machine checks 
every feed-out of a paper stack for the ‘Full 1’ condition. If the Full 1 condition occurs 15 
times (‘ 15 Cnt’  in the table above), the machine  detects that the tray is full. 
After the copier makes a booklet with 5 sheet s of A4/LT paper, the machine checks every 
feed-out of a paper stack for the ‘Full 2’ condition. If the Full 3 condition occurs...

Jogger Unit 
B793 46  SM 
2.6 JOGGER UNIT 
 
The jogger is used in corner-s taple mode and in booklet mode. 
For each sheet of paper when it arrives in  the staple tray, the following is done. 
ƒ  The jogger motor [A] drives  the jogger fences [B]. 
ƒ  The positioning roller solenoid moves the positioning roller [C] onto the top of the sheet.  Then the lower transport motor turns on and t he positioning roller rotates to push the 
sheet of paper against the  stopper (there are two stoppers: stopper L or...