Image Test Mode; Overview; Vpu Test; Sp4-907-1: Vpu Test Pattern: R - Ricoh B051 Service Manual

IMAGE TEST MODE

4.3 IMAGE TEST MODE

4.3.1 OVERVIEW

The SBU, BICU, and LD board have the function that prints out their test pattern. It
is useful to find the defective board when the image data problem is occurred.

4.3.2 VPU TEST

The SBU has the VPU test pattern. To make sure the scanner VPU control is
functioning, output the VPU test pattern with SP4-907.

SP4-907-1: VPU Test Pattern: R

SP4-907-2: VPU Test Pattern: G

SP4-907-3: VPU Test Pattern: B

4.3.3 IPU TEST

The BICU board has the IPU test pattern. To make sure the image processing is
functioning, output the IPU test pattern with SP4-417.
The BICU board also has the self-check mode with SP4-904-1 or 2.
If no error is detected, the test ends, and the completion code appears in the
operation panel display. If an error is detected, the test is interrupted and an error
code is displayed. The table below lists the completion and error codes.

SP4-904-1 Register Write/Read Check Result

Normal end
Abnormal end

SP4-904-2 Image Path Check Result

Normal end
Abnormal end

4.3.4 GAVD TEST

The LD board has the GAVD test pattern. To make sure the printing control is
functioning, output the GAVD test pattern with SP5-955 (Test Pattern is displayed).
This test pattern includes the pattern for image adjustment such as registration,
blank margin, laser beam pitch, etc.
B051/B052
CÓPIA NÃO CONTROLADA
Code
00
11 ~ 15
Code
00
21 ~ 24
4-20
CÓPIA NÃO CONTROLADA
SM