Xerox PHASER 7500 Service Manual

3-238 Phaser 7500 Printer Service Manual
Error Messages and Codes
RC Sample Block Fail-B-#4-Out
During the B (rough adjustment pattern) patch detection, the #4 (Black) patch at
the MOB Sensor Out side did not satisfy the defined number of valid sample
blocks.
Applicable Chain-Link Code
• 089-615: RC Sample Block Fail-B-#4-OUT
Initial Actions
• Power cycle the printer.
• If the problem persists, follow the procedure below.
Note
When multiple failures with Chain No. 089 occur, take action according to the
priority order.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Developer (K), PL5.2.6
■ IBT Belt Unit, PL6.1.10
■ Imaging Unit (M), PL8.1.4
■ MOB ADC Assy, PL18.1.4
■ MCU PWB, PL18.3.6
Troubleshooting Procedure
Step Actions and Questions Yes No
1 Check the density of Black.
Is the density of Black normal?
Go to step 2. Adjust to
correct the
density of
Black.
2 Check the connection between the
MOB Sensor Out J151 and the
MCU PWB J415 for connector
disconnection, open circuit, short
circuit, and poor contact.
Is the connection normal?
Go to step 3. Connect the
MOB Sensor
Out J151 to
the MCU PWB
J415 properly.
3 Check the Black Magnet Roll for
contamination, scratches, or
distortion.
Is the Magnet Roll normal?
Go to step 4. Replace the
Developer (K)
(PL5.2.7).
4 Check the IBT Belt for
contamination, scratches, or
distortion.
Is the IBT Belt normal?
Go to step 5. Replace the
IBT Belt Unit
(REP 6.2,
page 8-58).

Xerox PHASER 7500 Specifications

General

Brand	Xerox
Model	PHASER 7500
Category	Printer
Language	English