Ricoh B230 Service Manual

							SM iii B789 
Drive Layout ............................................................................................... 16 
Basic Operation ............................................................................................. 17 
Original Set and Size Detection ................................................................. 17 
Mixed Original Size Mode .......................................................................... 18 
Pick-Up and Separation ............................................................................. 20 
Skew Correction ......................................................................................... 21 
Original Transport and Exit ......................................................................... 22 
Conditions for Jam Detection ..................................................................... 23 
3. Service Tables................................................................................................... 25 
Dip Switches ................................................................................................. 25 
 
  
						

							 
B789 iv  SM  
						

							Covers and Tray 
SM 1 B789 
B789 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 
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 
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 SENSORS AND SKEW CORRECTION 
SENSOR 
 
1.  Original feed-in guide plate (see Original Set Sensor) 
2.  Original turn guide plate [A] (hook x 1). 
3.  Original width sensors [B] (
 x 1 each) and skew correction sensor [C] with  
						

							Electrical Components 
SM 7 B789 
B789 
bracket ( x 1,  x 1) 
1.3.5  STAMP SOLENOID AND ORIGINAL EXIT SENSOR 
 
1. Open the ARDF. 
2.  Remove the left edge of the platen sheet. 
3.  Release the hook [A]. 
4.  Open the original exit guide plate [B] 
5.  Stamp solenoid [C] (
 x 1,  x 1) 
6.  Original exit sensor [D] (
 x 1, hook x 1)  
						

							Original Feed Drive 
B789 8  SM 
1.4  ORIGINAL FEED DRIVE 
1.4.1 FEED MOTOR 
 
1.  Rear cover (see Rear Cover) 
2.  Feed motor with bracket [A] (
 x 2,  x 1, spring x 1) 
3.  Feed motor [B] (
 x 2) 
1.4.2 PICK-UP SOLENOID 
 
1.  Rear cover (see Rear Cover) 
2.  Harness guide [A] (all 
s)