Ricoh Mp C3000 Service Manual

 
SM i B789 
ARDF DF3000 B789 
TABLE OF CONTENTS 
1. REPLACEMENT AND ADJUSTMENT ............................................ 1 
1.1  COVERS AND  TRAY ........................................................................\
............ 1  
1.1.1  REAR CO VER ........................................................................\
............. 1  
1.1.2  FRONT COVER AND ORIGINAL TRAY .............................................. 1  
1.2  DOCUMENT FEED  COMPONENTS...

 
B789 ii  SM 
2.2.4 SKEW CORRE CTION ....................................................................... 21  
2.2.5  ORIGINAL TRANSPORT  AND EXIT ................................................. 22  
2.2.6  CONDITIONS FOR JA M DETECTION .............................................. 23  
3. SERVICE TABLES..........................................................\
............... 25 
3.1  DIP SWIT CHES ........................................................................\
.................. 25...

 
 
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. 
  
Symbols Used in this Manual 
This manual uses the following symbols. 
: See or Refer to 
: Screws 
: Connector 
: Clip ring 
: E-ring  

Covers and Tray 
SM 1 B789 
B789 
ARDF DF3000 1.  REPLACEMENT AND ADJUSTMENT 
1.1 COVERS AND TRAY 
1.1.1 REAR COVER 
 
1.  Open the left cover [A]. 
2.  Open the original tray [B]. 
3.  Rear cover [C] (
 x 1, hook x 6) 
1.1.2  FRONT COVER AND ORIGINAL TRAY 
 
1.  Open the left cover. 
2.  Rear cover (
 Rear Cover) 
3.  Front cover [A] (
 x 1) 
 
ƒ  Keep the original tray open when you remove the front cover. 
4.  Original tray [B] (
 x 1,  x 1)  

Document Feed Components 
B789 2  SM 
1.2  DOCUMENT FEED COMPONENTS 
1.2.1  ORIGINAL FEED UNIT 
 
1.  Open the left cover. 
2.  Original feed unit [A]. 
1.2.2 PICK-UP ROLLER 
 
1.  Open the left cover. 
2.  Original feed unit (
 Original Feed Unit) 
3.  Pick-up roller [A] (
 x 1)  

Document Feed Components 
SM 3 B789 
B789 
ARDF DF3000 
1.2.3 FEED BELT 
 
1.  Open the left cover. 
2.  Original feed unit (
 Original Feed Unit) 
3.  Feed belt cover [A] (spring x 1) 
 
ƒ  When reassembling the feed belt cover, make sure that the projection [B] of 
the feed belt cover is on the guide plate rear [C]. 
 
4.  Belt tension unit [D]  

Document Feed Components 
B789 4  SM 
 
5.  Feed belt [E] 
1.2.4 SEPARATION ROLLER 
 
1.  Open the left cover. 
2.  Separation roller cover [A]. 
3.  Separation roller [B] (
 x 1)  

Electrical Components 
SM 5 B789 
B789 
ARDF DF3000 
1.3 ELECTRICAL COMPONENTS 
1.3.1  ARDF DRIVE BOARD AND  DF POSITION SENSOR 
 
1.  Rear cover (see Rear Cover) 
2.  ARDF drive board [A] (
 x 3, all s) 
3.  DF position sensor with bracket [B] (
 x 1,  x 1) 
4.  DF position sensor [C] (hook x 2) 
1.3.2  ORIGINAL LENGTH SENSORS AND TRAILING EDGE 
SENSOR 
 
1.  Original Tray (see Front Cover and Original Tray) 
2.  Tray cover [A] (
 x 3)  

Electrical Components 
B789 6  SM 
3. Original trailing edge sensor [B] ( x 1) 
4.  Original length sensors [C] (
 x 1 each) 
1.3.3 ORIGINAL SET SENSOR 
 
1.  Open the left cover. 
2.  Original feed unit (see the Original Feed Unit) 
3.  Original Tray (see the Original Tray) 
4.  Original feed-in guide plate [A] (
 x 3). 
5.  Original set sensor bracket [B] (
 x 1) 
6.  Original set sensor [C] 
1.3.4  ORIGINAL SIZE SENS ORS AND SKEW CORRECTION 
SENSOR 
 
1.  Original feed-in guide plate (see Original Set...