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....

 
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....

 
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...

 
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...

 
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...

 
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...

 
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 -...

 
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...

 
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,...

 
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...