Ricoh B230 Service Manual

							 
SM 4-1 B230/B237 
Trouble 
shooting 
4. TROUBLESHOOTING 
4.1  PROCESS CONTROL ERROR CONDITIONS 
4.1.1  DEVELOPER INITIALIZATION RESULT 
SP-3-014-001 (Developer Initialization Result) 
No. Result Description Possible Causes Action 
1 Successfully 
completed Developer 
initialization is 
successfully 
completed. -  
2 Forced 
termination Developer 
initialization 
was forcibly 
terminated. A cover was opened 
or the main switch 
was turned off during 
the initialization. When done in SP mode, do 
the developer initialization 
again. Reinstall the engine 
main firmware if the result 
is the same. 
Turn the main switch off 
and on when done at unit 
replacement. 
6 Vt error Vt is more 
than 0.7V 
when Vcnt is 
4.3V. 1.  Make sure that the heat seal on the 
development unit is not removed. 
2. Defective TD sensor  
7  Vcnt error 1 Vcnt is less 
than 4.7V 
when Vcnt is 
Vt target ± 
0.2V. 1. Defective TD sensor  
2.  Vt target settings are not correct. 
3.  Toner density error 
8  Vcnt error 2 Vt is more 
than 0.7V 
when Vcnt is 1.  Make sure that the heat seal on the 
development unit is not removed. 
2. Defective TD sensor  
						

							 
B230/B237 4-2  SM 
No. Result Description Possible Causes Action 
4.3V and 
Vcnt is less 
than 4.7V 
when Vcnt is 
Vt target ± 
0.2V. 
9  Vcnt error 3 Vcnt is less 
than 4.7V. 1.  Make sure that the heat seal on the 
development unit is not removed 
2. Defective TD sensor 
3.  Vt target settings are not correct. 
4.  Toner density error 
 
ƒ  The machine starts developer initialization after you set “Enable” in SP3-902-005, 
006, 007, or 008. Developer initialization automatically resumes when you open 
and close the front door or turn the main switch off and on if an error other than 
Error 8 occurs. 
4.1.2 PROCESS CONTROL SELF-CHECK RESULT 
SP3-012-001 to -010 (Process Control Self-check Result) 
No. Result Description Possible Causes Action 
11  Successfully 
completed Process control 
self-check 
successfully 
completed. - Check the Vsg 
adjustment. See the  
Vsg Adjustment 
Result following this 
table. 
41 Vt error Vt maximum or 
minimum error is 
detected. 1. Defective 
development 
unit  Vt maximum error and 
an image is faint: 
ƒ Replace the toner 
supply pump unit. 
Vt maximum error and 
an image is O.K: 
ƒ Replace the  
						

							 
SM 4-3 B230/B237 
Trouble 
shooting 
No. Result Description Possible Causes Action 
development unit. 
ƒ Replace the IOB 
board. 
Vt minimum error: 
ƒ Replace the 
development unit. 
ƒ Replace the IOB 
board. 
53 ID sensor 
coefficient (K5) 
detection error Not enough data 
can be sampled. - Solid image is not 
sufficient density: 
ƒ  Retry the process 
control. 
ƒ Replace the ID 
sensors. 
ƒ Replace the IOB 
board. 
Solid image is O.K. 
ƒ Replace the ID 
sensors. 
ƒ Replace the IOB 
board. 
ID sensor is dirty: 
ƒ  Clean the ID 
sensors. 
ƒ  Retry the process 
control. 
54 ID sensor 
coefficient (K5) 
maximum/ 
minimum error When the K5 is 
more than the 
value of 
SP3-362-003 or 
less than the value 
of SP3-362-004, 
the error 54 is 1. ID sensor 
pattern density is 
too high or low. 
2.  ID sensor or 
shutter is 
defective. Same as 53  
						

							 
B230/B237 4-4  SM 
No. Result Description Possible Causes Action 
displayed. 
55 Gamma error: 
Maximum  Gamma is out of 
range. 5.0 < 
Gamma 1. ID sensor 
pattern density is 
too high. 
2. Hardware 
defective. Same as 53 
56 Gamma error: 
Minimum Gamma is out of 
range.  
Gamma < 0.15 1. ID sensor 
pattern density is 
too low. 
2. Hardware 
defective. Same as 53 
ƒ Replace the toner 
supply pump unit. 
57 Vk error: 
Maximum Vk is out of range. 
150 < Vk 1. ID sensor 
pattern density is 
too low. 
2. Hardware 
defective. Same as 53 
58 Vk error: 
Minimum Vk is out of range. 
Vk < –150 1. ID sensor 
pattern density is 
too high. 
2. Background dirty
3. Hardware 
defective Same as 53 
59 Sampling data 
error during 
gamma 
correction Not enough data 
can be sampled 
during the gamma 
correction. 1. ID sensor 
pattern density is 
too high or low. 
2. Hardware 
defective Same as 53  
						

							 
SM 4-5 B230/B237 
Trouble 
shooting 
Vsg Adjustment Result 
SP3-325-001 to -010 (Vsg Adjustment Result) 
No. Result Description Possible Causes Action 
1 O.K Vsg adjustment 
is correctly done.- - 
2 ID sensor 
adjustment 
error Vsg cannot be 
adjusted within 
4.0 ± 0.5V. 1.  Dirty ID sensor 
(toner, dust, or 
foreign material) 
2.  Dirty transfer belt 
3. Scratched image 
transfer belt 
4.  Defective ID sensor
5. Poor connection 
6. Defective IOB ƒ  Clean the ID 
sensor.  
ƒ  Check the belt 
cleaning. Clean or 
replace the 
transfer belt. 
ƒ  Replace the image 
transfer belt. 
ƒ Replace the ID 
sensor. 
ƒ Check the 
connection. 
ƒ Replace the IOB 
board. 
3 ID sensor 
output error ID sensor output 
is more than 
Voffset 
Threshold 
(SP3-324-004) 1.  Defective ID sensor
2. Poor connection 
3. Defective IOB ƒ Replace the ID 
sensor. 
ƒ Check the 
connection. 
ƒ Replace the IOB 
board. 
9 Vsg 
Adjustment 
error Vsg adjustment 
has not been 
completed. Other cases ƒ Retry the 
SP3-321-010. 
  
						

							 
B230/B237 4-6  SM 
 
4.1.3 LINE POSITION ADJUSTMENT RESULT 
SP2-194-010 to -012 (Line Position Adjustment Result: M, C, Y) 
This SP shows the number as a line position adjustment result on the LCD. It shows which 
color has an error (M, Y or C). 
No. Result Description Note 
0  Not done  Line position adjustment has not been done.  - 
1 Completed 
successfully Line position adjustment has correctly been 
done, - 
2 Cannot detect 
patterns ID sensors have not detected the patterns for 
line position adjustment. See Note 
3 Fewer lines on 
the pattern than 
the target The patterns, which ID sensors has detected, 
are not enough for line position adjustment. See Note 
4 More lines on 
the pattern than 
the target   Not used in this machine.  - 
5 Out of the 
adjustment 
range ID sensors has correctly detected the patterns 
for line position adjustment, but a shift of 
patterns is out of adjustable range. See Note 
6-9 Not used  -  - 
 
ƒ  For details, see the Troubleshooting Guide - Line Position Adjustment section.  
						

							 
SM 4-7 B230/B237 
Trouble 
shooting 
4.2  SCANNER TEST MODE 
4.2.1  VPU TEST MODE 
Output the VPU test pattern with SP4-907-001 to make sure the scanner VPU control 
operates correctly. The VPU test pattern prints out after you have set the SP mode settings 
and pressed the start key. 
ƒ  The CCD on the SBU board may be defective if the copy is abnormal and the VPU test 
pattern is normal. 
ƒ  The following can be the cause if the copy is normal and the VPU test pattern is 
abnormal: 
ƒ  The harness may not be correctly connected between the SBU and the BICU 
ƒ  The BICU (IPU) or SBU board may be defective. 
4.2.2  BICU (IPU) TEST MODE 
You can check the BICU (IPU) board with the SP mode menu, SP4-904-1 or -2. 
If no error is detected, the test ends. Then the completion code shows in the operation 
panel display. If an error is detected, the test is interrupted. Then an error code shows. The 
table below lists the completion and error codes. 
SP4-904-1 Register Access 
There are 16 bit switches in this SP. Each bit indicates each CPU as follows. The error 
result is displayed on the operation panel in decimal number. 
0: Normal, 1: Error   
Bit 0: TAURUS register 
Bit 1: ORION register 
Bit 2: LUPUS register Bit 3 to 11: Not used 
Bit 12: Ri20 register 
Bit 13 to 15: Not used 
SP4-904-2 Image Path 
There are 16 bits switches in this SP. Each bit indicates each CPU path as follows. The 
error result is displayed on the operation panel in decimal number. 
0: Normal, 1: Error 
Bit 0: Image path from SBU to TAURUS 
Bit 1: Image path from TAURUS to ORION 
Bit 2: Image path from ORION to TAURUS 
Bit 3: Image path from TAURUS to LUPUS Bit 4 to 11: Not used 
Bit 12: Image path from LUPUS to Ri20 
Bit 13: Image path from Ri20 to GAVD 
Bit 14 and 15: Not used 
  
						

							 
B230/B237 4-8  SM 
Errors may be caused by the following problems: 
1.  Short circuit on the signal lines 
ƒ  When the BICU board is installed, a pin or two on the ASIC is damaged. 
ƒ  Some conductive matter or object is trapped among the pins. 
ƒ Condensation 
2.  Destruction of circuit elements 
ƒ  Over current or a defective element breaks the circuit. 
3.  Abnormal power supply 
•The required voltage is not supplied to the devices. 
4. Overheat/overcooling 
ƒ  The environment is inappropriate for the board (the scanner unit). 
5. Static electricity 
ƒ  Static electricity of a high voltage occurs during the test. 
6. Others 
ƒ  The scanner and BICU are incorrectly connected. 
When you have completed a check, turn the main switch off and on before you do another 
check. When you have completed all necessary checks, turn the main switch off and on.  
						

							 
SM 4-9 B230/B237 
Trouble 
shooting 
4.3  SERVICE CALL CONDITIONS 
4.3.1 SUMMARY 
The ‘SC Table’ section shows the SC codes for controller errors and other errors. The latter 
(not controller errors) are put into four types. The type is determined by their reset 
procedures. The table shows the classification of the SC codes. 
 
 Key Definition Reset Procedure 
Controller 
errors CTL The error has occurred in the 
controller. See “Troubleshooting Procedure” 
in the table. 
A The error involves the fusing 
unit. The machine operation is 
disabled. The user cannot reset 
the error. Turn the main switch off and on. 
Reset the SC (set SP5-810-1). 
Turn the main switch off and on. 
B The error involves one or some 
specific units. The machine 
operates as usual, excluding 
the related units. Turn the operation switch off and 
on. 
C The error is logged. The 
SC-code history is updated. 
The machine operates as 
usual. The SC will not show. Only the 
SC history is updated.   
Other errors 
D The machine operation is 
disabled. You can reset the 
machine by turning the 
operation switch or main switch 
off and on. If the error occurs 
again, the same SC code is 
displayed. Turn the operation switch or main 
power switch off and on. 
After you turn the main power switch off, wait for one second or more before you turn the 
main power switch on (
  SC 672). All SCs are logged. The print log data (SP5-990-004) 
in SP mode can check the latest 10 SC codes detected and total counters when the SC  
						

							 
B230/B237 4-10  SM 
code is detected. 
 
ƒ  If the problem is related electrical circuit boards, first disconnect then reconnect 
the connectors before you replace the PCBs. 
ƒ  If the problem concerns a motor lock, first check the mechanical load before you 
replace motors or sensors. 
SC Code Classification 
The table shows the classification of the SC codes: 
Class 1 Section SC CodeDetailed section 
100 -  Scanner 
1XX Scanning  
190 -  Unique for a specific model 
200 -  Polygon motor 
220 -  Synchronization control 
230 -  FGATE signal related 
240 -  LD control 
260 -  Magnification 
2XX Laser exposure  
280 -  Unique for a specific model 
300 -  Charge 
330 -  Drum potential 
350 -  Development 
3XX  Image development 1 
380 -  Unique for a specific model 
400 -  Image transfer 
420 -  Paper separation 
430 -  Cleaning 
440 -  Around drum 
4XX  Image development 2 
460 -  Unit