Scanner Test Mode; Vpu Test Mode; Bicu (Ipu) Test Mode - Ricoh B230 Service Manual

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.
The CCD on the SBU board may be defective if the copy is abnormal and the VPU test
pattern is normal.
The following can be the cause if the copy is normal and the VPU test pattern is
abnormal:
The harness may not be correctly connected between the SBU and the BICU
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
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
SM
Bit 3 to 11: Not used
Bit 12: Ri20 register
Bit 13 to 15: Not used
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
4-7 B230/B237