Xerox Phaser 7100 Service Manual

Error Troubleshooting
Phaser 7100 Service Manual Xerox Internal Use Only2-306
3. Check the connections between the Developer
Motor PWB and MCU PWB, as well as between
the Developer Motor PWB and LVPS PWB.
Are the connectors P/J474, P/J4741, P/J524,
P/J5248, and P/J5241 connected securely?
Go to step 4. Connect the
connectors P/J474,
P/J4741, P/J524,
P/J5248, and P/J5241.
4. Check the conductivity between the Developer
Motor PWB and Relay Connector.
Is the connection between P/J5241 <=> P/J5248
conducting properly?
Go to step 5. Replace the Developer
Motor Harness
Assembly.
5. Check the conductivity between the Developer
Motor PWB and MCU PWB.
Is the connection between P/J4741 <=> P/J474
conducting properly?
Go to Step 6 Replace the Developer
Motor Harness
Assembly.
6. Check the conductivity between the Relay
Connector and LVPS PWB.
Is the connection between P/J5248 <=> P/J524
conducting properly?
Go to Step 7 Replace the Main
Harness Assembly.
7. Check the voltage supply (+3.3VDC) to the
Developer Motor PWB.
Measure the voltage between the MCU PWB
GND <=> P/J474-1.
Is there a voltage (approx. +3.3VDC) output?
Go to Step 8 Go to +3.3VDC Power
Troubleshooting on
page 2-458.
8. Check the voltage supply (+24VDC) to the
Developer Motor PWB.
Measure the voltages between the LVPS PWB
GND <=> P/J524-9 and between LVPS PWB GND
<=> P/J524-11.
Is there a voltage (approx. +24VDC) output?
Close the Interlock Switch and check.
Replace the following
parts in sequence:
• Developer Motor
(REP 11.5
Developer Motor
(Match Box)
Assembly on
page 4-193)
• Developer Motor
PWB
(REP 11.4
Developer Motor
PWB on
page 4-190)
Replace the LVPS PWB
(REP 12.7 LVPS PWB
on page 4-211).
Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No

Xerox Phaser 7100 Specifications

General

Brand	Xerox
Model	Phaser 7100
Category	Printer
Language	English