Ricoh B230 Service Manual

							 
SM 3-33 B230/B237 
Replacement 
Adjustment 
Installing a new Laser Optics Housing Unit 
 
ƒ  A new laser optics housing unit has a bracket to protect the LD units. When you 
replace the laser optics housing unit, use caution. 
 
1.  Push the new laser optics housing unit [A] slowly into the copier until the 
bracket [B] bumps against the frame of the copier. 
2.  Remove the bracket [B], and then push the new laser optics housing unit fully 
into the copier (
 x 2, All x ). 
3.  Reassemble the machine. 
After installing the new laser optics housing unit 
Do the following adjustment after installing the new laser optics housing unit.   
1.  Plug in and turn on the main power switch. 
 
2.  Adjust the main scan magnification only for black (Bk). 
1.  Input the standard value [A] provided with a new laser optics housing unit for the  
						

							 
B230/B237 3-34  SM 
main scan magnification adjustment with SP2-185-001. 
 
ƒ  The value [A] is different for each laser optics housing unit. 
2.  Print the test pattern (14: 1-dot trimming pattern in the SP2-109-003). 
3.  Check that the left and right trim margin is within 4 ± 1 mm. If not, change the 
standard value for the main scan magnification adjustment. 
3.  Adjust the main scan registration only for the black (Bk). 
1.  Input the registration value [B] provided with a new laser optics housing unit for the 
main scan registration adjustment with SP2101-001. 
 
ƒ  The value [B] is different for each laser optics housing unit. 
2.  Print the test pattern (14: 1-dot trimming pattern in the SP2-109-003). 
3.  Check that the left trim margin is within 2 ± 1 mm. If not, change the registration 
value for the main scan registration adjustment. 
4.  Select 0 with SP2-109-003 after printing the 1-dot trimming pattern. 
5.  Do the line position adjustment. 
1.  First do SP2-111-3.   
2.  Then do SP2-111-1. 
To check if SP 2-111-1 was successful, watch the screen during the process. A 
message is displayed at the end. Also, you can check the result with SP 2-194-10 
to -12. 
6.  Exit the SP mode. 
3.6.3  POLYGON MIRROR MOTOR 
 
1.  Laser optics housing unit (
  Laser Optics Housing Unit) 
2.  Shutter [A] of the laser housing optics unit (
 x 3)  
						

							 
SM 3-35 B230/B237 
Replacement 
Adjustment 
 
3.  Polygon mirror motor cover [B] of the laser optics housing unit (
 x 4) 
4.  Polygon mirror motor holder [C] (
 x 2) 
5.  Polygon mirror motor [D] (
 x 4,  x 1) 
After installing the laser optics housing unit: 
1.  Do the Forced Line Position Adj. Mode c (SP2-111-3).   
2.  Then do the Forced Line Position Adj. Mode a (SP2-111-1). 
To check if SP 2-111-1 was successful, watch the screen during the process. A message is 
displayed at the end. Also, you can check the result with SP 2-194-10 to -12.  
						

							 
B230/B237 3-36  SM 
3.7 IMAGE CREATION 
3.7.1 PCU 
 
ƒ  Do not touch the OPC drum. Do not let metal objects touch the development 
sleeve. 
 
1.  Open the front door. 
2.  Lever lock [A] (
 x 1) 
3.  Turn the release lever [B] and the image transfer unit contact lever [C] 
counter-clockwise. 
4.  Open the drum positioning plate [D]. 
 
5.  Pull out the PCU (hold the grip while you pull it out) [E]. 
3.7.2  DRUM UNIT AND DEVELOPMENT UNIT 
The new drum unit has a front cover and a front joint. When you attach the new drum unit 
to the development unit, remove a front cover and a front joint at first.  
						

							 
SM 3-37 B230/B237 
Replacement 
Adjustment 
And use them for reassembling the new drum unit and development unit. 
1.  If you install a new drum unit, set SP 3902-xxx to 1. 
Black: 3902-009 
Yellow: 3902-010 
Cyan: 3902-011 
Magenta: 3902-012 
 
ƒ  If you do this, then the machine will reset the PM counter for the drum unit 
automatically, after you turn the power on again. 
 
2.  Turn the machine power off. 
3. PCU (
 PCU) 
4.  Front cover [A] (
 x 2) 
 
 
ƒ  Do not touch the bearing [B] after removing the front cover. The bearing is 
properly applied with lubricant.  
						

							 
B230/B237 3-38  SM 
 
Note: Remove the toner duct [G] first to avoid breaking it during this procedure. 
5.  Remove the bushing [C] of the development roller at the rear of the PCU (
 x 1). 
 
6.  Remove the front joint [D] (
 x 1,  x 1). 
 
ƒ  The front joint [D] is firmly set. Remove it with a watchmaker’s or jeweller’s 
screwdriver. 
 
7.  Drum unit [E] and Development Unit [F] 
[G] 
						

							 
SM 3-39 B230/B237 
Replacement 
Adjustment 
 
ƒ  When the development unit is removed from the drum unit, clean the entrance 
mylar [G] with a vacuum.   
8.  If you change the development unit, do the ACC procedure. 
Developer 
 
1.  Set SP 3902-xxx to 1. 
Black: 3902-005 
Yellow: 3902-006 
Cyan: 3902-007 
Magenta: 3902-008 
2.  Turn the machine power off. 
3.  Development unit (
  Drum Unit and Development Unit) 
4.  Hopper cover [A] (hook x 3) 
 
5.  Shake a bag of developer and pour it into the development hopper [B]. 
6.  Reattach the hopper cover (hook x 3) 
7.  Turn the machine power on. The machine initializes the developer and resets the  
						

							 
B230/B237 3-40  SM 
PM counter for the developer. (For details of the developer initialization result, 
see Developer Initialization Result in the Troubleshooting chapter. 
8.  Do the ACC procedure. 
3.7.3 TONER COLLECTION BOTTLE 
If you will install a new bottle, and the old bottle is not in a full or near-full condition, then set 
SP 3902-017 to 1. 
 
ƒ  If you do this, then the machine will reset the PM counter for the bottle 
automatically, after you turn the power on again.   
ƒ  If the bottle is in a full or near-full condition, it is not necessary to do this. 
 
1.  Turn off the main power switch. 
2.  Open the front door and remove the screw [A]. 
3.  Close the front door. 
4.  Pull out tray 1 [B]. 
5.  Open the toner collection bottle door [C]. 
6.  Pull out the toner collection bottle [D]. 
 
ƒ  Remove the cap [E], and then attach the cap on the opening of the toner collection 
bottle before taking it out.  
						

							 
SM 3-41 B230/B237 
Replacement 
Adjustment 
3.7.4  TONER SUPPLY TUBE FAN 
 
1.  Rear cover (
 Rear Cover) 
2.  High voltage supply board bracket (
  High Voltage Supply Board Bracket) 
3.  Toner supply tube fan duct [A] (
 x 3,  x 1,  x 1) 
4.  Split the fan duct (4 hooks). 
5.  Toner supply tube fan [B] 
When reinstalling the toner supply tube fan 
Make sure that the toner supply tube fan is installed with its decal facing to the rear of the 
machine. 
3.7.5  TONER PUMP UNIT 
There are four pump units inside the machine. This procedure describes the replacement 
procedure only for one unit. If you need to replace another unit, do the same as this 
procedure. 
 
ƒ  Put some sheets of paper on the floor before doing this procedure. Toner may fall 
on the floor.  
						

							 
B230/B237 3-42  SM 
 
1.  Front door (
 Rear Cover) 
2.  Image transfer belt unit (
  Image Transfer Belt) 
3.  All PCUs (
 PCU)  
4.  Put a sheet of paper (A3/DLT) inside the machine as shown and on the floor.   
 
ƒ  The sheet of paper on the floor is used in a later step. 
 
5.  Release the harness [A] from the clamp (
  x 1 for YCM,   x 3 for K) and hook, 
and then disconnect the harness. 
 
ƒ  Avoid touching these spring terminals [B]. 
6.  Release the toner supply tube [C].