Ricoh B230 Service Manual

							 
SM 3-3 B230/B237 
Replacement 
Adjustment 
3.3 IMAGE ADJUSTMENT 
3.3.1 SCANNING 
Check the printing registration/side-to-side adjustment and the blank margin adjustment 
before you do the following scanner adjustments. 
 
ƒ  Use a S-2-1 test chart to do the following adjustments. 
Scanner sub-scan magnification 
 
A: Sub-scan magnification 
1.  Put the test chart on the exposure glass. Then make a copy from one of the feed 
stations. 
2.  Check the magnification ratio. Adjust with SP4-008 if necessary. 
Standard: ±1.0%. 
Scanner leading edge and side-to-side registration 
 
A: Leading Edge Registration 
1.  Put the test chart on the exposure glass. Then make a copy from one of the feed  
						

							 
B230/B237 3-4  SM 
stations. 
2.  Check the leading edge and side-to-side registration. Adjust the following SP 
modes if necessary. Standard: 0 ± 2mm for the leading edge registration, 0 ± 
2.5mm for the side-to-side registration.   
 
 
SP mode 
Leading Edge Registration  SP4-010-001 
Side-to-Side Registration  SP4-011-001 
 
3.3.2 ARDF 
ARDF side-to-side, leading edge registration and trailing edge 
 
A: Leading edge registration 
Use A3/DLT paper to make a temporary test chart as shown above. 
1.  Put the temporary test chart on the ARDF. Then make a copy from one of the 
feed stations. 
2.  Check the registration. Check the leading edge and side-to-side registration. 
Adjust the following SP modes if necessary. Standard: 4.2 ± 2 mm for the leading 
edge registration, 2 ± 1 mm for the side-to-side registration. Use the following SP 
modes to adjust if necessary. 
 
SP Code What It Does Adjustment Range 
SP6-006-001  Side-to-Side Registration  ± 3.0 mm 
SP6-006-003  Leading Edge Registration  ± 5.0 mm  
						

							 
SM 3-5 B230/B237 
Replacement 
Adjustment 
SP6-006-005  Buckle: Duplex Front  ± 5.0 mm 
SP6-006-006  Buckle: Duplex Rear  ± 5.0 mm 
SP6-006-007  Rear Edge Erase (Trailing Edge)  ± 5.0 mm 
 
ARDF sub-scan magnification 
1.  Put the temporary test chart on the ARDF. Then make a copy from one of the 
feed stations. 
2.  Check the magnification ratio. Adjust with SP6-017-001 if necessary.   
Standard: ±1.0% 
Reduction mode: ±1.0%   
Enlargement mode: ±1.0% 
3.3.3 REGISTRATION 
Image Area 
 
A = C = 4.2mm (1.6), B = 2.0mm 
Make sure that the registration is adjusted within the adjustment standard range as shown 
below. 
Leading Edge 
Adjusts the leading edge registration for each paper type and process line speed. 
Side to Side 
Adjusts the side-to-side registration for each paper feed station. Use SP mode (SP1-002) 
to adjust the side-to-side registration for the optional paper feed unit, LCT, and duplex unit. 
Adjustment Standard 
ƒ  Leading edge (sub-scan direction): 4.2 ± 2 mm  
						

							 
B230/B237 3-6  SM 
ƒ  Side to side (main-scan direction): 2 ± 1 mm 
Paper Registration Standard 
The registration in both main and sub-scan directions can change within the following 
tolerance. 
ƒ  Sub-scan direction: 0 ± 9 mm 
ƒ  Main-scan direction: 0 ± 4 mm 
Adjustment Procedure 
1. Enter SP2-109. 
2.  Print out the test pattern (14: 1-dot trimming pattern) with SP2-109. 
 
ƒ  Registration can change slightly as shown on the previous page. Print some 
pages of the 1-dot trimming pattern for step 3 and 4. Then average the leading 
edge and side-to-side registration values and adjust each SP mode. 
3.  Do the leading edge registration adjustment. 
1.  Check the leading edge registration and adjust it with SP1-001. 
2.  Select the adjustment conditions (paper type and process line speed). 
3.  Input the value. Then press the 
 key. 
4.  Generate a trim pattern to check the leading edge adjustment. 
4.  Do the side-to-side registration adjustment. 
1.  Check the side-to-side registration and adjust it with SP1-002. 
2.  Select the adjustment conditions (paper feed station). 
3.  Input the value. Then press the 
 key. 
4.  Generate a trim pattern to check the leading edge adjustment. 
3.3.4  ERASE MARGIN ADJUSTMENT 
 
ƒ  Adjust the erase margin C and D only if the registration (main scan and sub scan) 
cannot be adjusted within the standard values. Do the registration adjustment after 
adjusting the erase margin C and D, and then adjust the erase margin A and B.  
						

							 
SM 3-7 B230/B237 
Replacement 
Adjustment 
 
1. Enter SP2-109. 
2.  Print out the test pattern (14: 1-dot trimming pattern) with SP2-109. 
3.  Check the erase margin A and B. Adjust them with SP2-103 if necessary. 
Leading edge: 1.5 to 5.0 mm,   
Side-to-side:0.5 to 4.0 mm,   
Trailing edge: 0.5 to 0.6 mm 
3.3.5 COLOR REGISTRATION 
Line Position Adjustment 
The automatic line position adjustment usually is done for a specified condition to get the 
best color prints.   
Do the following if color registration shifts:   
ƒ  Do “Auto Color Registration” as follows to do the forced 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. 
ƒ  You should also do the line position adjustment at these times: 
ƒ  After you transport or move the machine (you should do the forced line position 
adjustment if you install the machine at the user location.) if the machine is 
pre-installed at the workshop and moved to the user location,   
ƒ  When you open the drum positioning plate  
						

							 
B230/B237 3-8  SM 
ƒ  When you remove or replace the motors, clutches, and/or gears related to the 
drum/development/transfer sections 
ƒ  When you remove or replace the image transfer belt, image transfer belt unit or 
laser optical housing unit 
3.3.6 PRINTER GAMMA CORRECTION 
 
ƒ  The ACC is usually sufficient to adjust the color balance to get the best print output. 
You only need the printer gamma correction to fine-tune to meet user 
requirements. 
Use SP modes if you want to modify the printer gamma curve created with ACC. You can 
adjust the gamma data for the following: 
ƒ Highlight 
ƒ Middle 
ƒ Shadow areas 
ƒ IDmax.  
The adjustable range is from 0 to 30 (31 steps).   
Copy Mode 
- KCMY Color Balance Adjustment - 
The adjustment uses only “Offset” values. 
 
ƒ  Never change “Option” values (default value is 0). 
Highlight (Low ID)  Levels 2 through 5 in the C4 chart 10-level scale 
Middle (Middle ID)  Levels 3 through 7 in the C4 chart 10-level scale 
Shadow (High ID)  Levels 6 through 9 in the C4 chart 10-level scale 
ID max Level 10 in the C4 chart 10-level scale (affects the entire image 
density.) 
Offset The higher the number in the range associated with the low ID, 
middle ID, high ID, and ID max, the greater the density. 
 
There are four adjustable modes (can be adjusted with SP4-918-009): 
ƒ  Copy Photo mode 
ƒ  Copy Letter mode 
ƒ  Copy Letter (Single Color) mode  
						

							 
SM 3-9 B230/B237 
Replacement 
Adjustment 
ƒ  Copy Photo (Single Color) mode 
 
- Adjustment Procedure - 
1.  Copy the C-4 chart in the mode that you want to adjust. 
2.  Enter the SP mode. 
3. Select “Copy SP.” 
4. Select SP4-918-009. 
5.  Adjust the offset values until the copy quality conforms to the standard (
the 
table below). 
 
ƒ  1. Never change “Option” value (default value is 0). 
ƒ  2. Adjust the density in this order: “ID Max,” “Middle,” “Shadow,” “Highlight.” 
- Photo Mode, Full Color - 
 
Item to Adjust Level on the C-4 chart Adjustment Standard 
1 ID max: 
(K, C, M, and Y) 
Adjust the offset value so that 
the density of level 10 
matches that of level 10 on 
the C-4 chart. 
2 Middle (Middle 
ID) 
(K, C, M, and Y) 
Adjust the offset value so that 
the density of level 6 matches 
that of level 6 on the C-4 
chart.  
						

							 
B230/B237 3-10  SM 
3 Shadow (High ID) 
(K, C, M, and Y) 
Adjust the offset value so that 
the density of level 8 matches 
that of level 8 on the C-4 
chart. 
4 Highlight (Low ID) 
(K, C, M, and Y) 
 Adjust the offset value so that 
dirty background does not 
show on the copy and the 
density of level 3 is slightly 
lighter than that of level 3 on 
the C-4 chart. 
5 K Highlight (Low 
ID) (C,M, and Y) 
 
Adjust the offset value so that 
the color balance of black 
scale levels 3 through 5 in the 
copy is seen as gray (no C, 
M, or Y should be visible). If 
the black scale contains C, 
M, or Y, do steps 1 to 4 again.
 
- Photo Mode, Single Color - 
 
Item to Adjust Level on the C-4 chart Adjustment Standard 
1  ID max: (K) 
Adjust the offset value so that 
the density of level 10 
matches that of level 10 on 
the C-4 chart. 
2 Middle (Middle 
ID) (K) 
Adjust the offset value so that 
the density of level 6 matches 
that of level 6 on the C-4 
chart. 
3 Shadow (High ID) 
(K) 
Adjust the offset value so that 
the density of level 8 matches 
that of level 8 on the C-4 
chart.  
						

							 
SM 3-11 B230/B237 
Replacement 
Adjustment 
4 Highlight (Low ID) 
(K) 
Adjust the offset value so that 
dirty background does not 
show on the copy and the 
density of level 3 is slightly 
lighter than that of level 3 on 
the C-4 chart. 
 
- Text (Letter) Mode, Full Color - 
 
Item to Adjust Level on the C-4 chart (K) Adjustment Standard 
1 ID max: (K, C, M, 
and Y) 
Adjust the offset value so that 
the density of level 10 
matches that of level 10 on 
the C-4 chart. 
2 Middle (Middle 
ID)  
(K, C, M, and Y) 
Adjust the offset value so that 
the density of level 6 matches 
that of level 6 on the C-4 
chart. 
3 Shadow (High ID) 
(K, C, M, and Y) 
Adjust the offset value so that 
the density of level 8 matches 
that of level 8 on the C-4 
chart. 
4 Highlight (Low ID) 
(K, C, M, and Y) 
Adjust the offset value so that 
dirty background does not 
show on the copy and the 
density of level 3 is slightly 
lighter than that of level 3 on 
the C-4 chart. 
 
- Text (Letter) Mode, Single Color - 
 
Item to Adjust Level on the C-4 chart (K) Adjustment Standard 
1  ID max: (K) Adjust the offset value so 
that the density of level 10  
						

							 
B230/B237 3-12  SM 
matches that of level 10 on 
the C-4 chart. 
2 Middle (Middle 
ID) (K) 
 Adjust the offset value so 
that the density of level 6 
matches that of level 6 on 
the C-4 chart. 
3 Shadow (High ID) 
(K) 
 Adjust the offset value so 
that the density of level 8 
matches that of level 8 on 
the C-4 chart. 
4 Highlight (Low 
ID) (K) 
 Adjust the offset value so 
that dirty background does 
not show on the copy and 
the density of level 3 is 
slightly lighter than that of 
level 3 on the C-4 chart. 
 
ƒ  Text parts of the test pattern cannot be printed clearly after you adjust “shadow” as 
shown above. At this time, check if the 5 line/mm pattern at each corner is printed 
clearly. If it is not, adjust the offset value of “shadow” again until it is. 
Printer Mode 
There are six adjustable modes (select these modes with printer SP1-102-001): 
ƒ  2400 x 600 photo mode 
ƒ  2400 x 600 text mode 
ƒ  1800 x 600 photo mode 
ƒ  1800 x 600 text mode 
ƒ  600 x 600 photo mode 
ƒ  600 x 600 text mode 
 
 
K C M Y 
Highlight 
Shadow SP1-104-1 
SP1-104-2 SP1-104-21 
SP1-104-22 SP1-104-41 
SP1-104-42 SP1-104-61 
SP1-104-62