Detailed Self-Diagnostics; Image Test Mode; Overview; Vpu Test - Ricoh B156 Service Manual

IMAGE TEST MODE

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4.2.2 DETAILED SELF-DIAGNOSTICS

This detailed self-diagnostic test requires a loop-back connector (P/N: G0219350).
1. Turn off the machine and attach the loop-back connector to the parallel
interface.
2. Hold down
the same time, switch on the machine. You will see "Now Loading" on the
touch-panel, and prints the diagnostic report after completing the test.
• Refer to the diagnostics report for the detected errors. The errors detected
during self-diagnostics can be checked with SP7-832-001 (Diag. Result).
• Refer to section 4.1 for details about the error codes.
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.

4.3.4 GAVD TEST

The LD board has the GAVD test pattern. To make sure the printing control is
functioning, output any test pattern with SP5-955.
This test pattern includes the pattern for image adjustment such as registration,
blank margin, laser beam pitch, etc.
B156/B220
CÓPIA NÃO CONTROLADA
, press and hold down
CÓPIA NÃO CONTROLADA
, and then while pressing both keys at
4-22
Rev. 05/2006
SM