Of7 Main Pwb Check Rap - Xerox Phaser 3635MFP Service Manual

OF7 Main PWB Check RAP

Use this RAP to check the main PWB. This RAP must be performed before a new main PWB is
installed.
Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Perform the PWB Checks.
PWB Checks
The following steps are used to diagnose a fault with the input voltage to the main PWB or out-
put voltage from the main PWB.
Perform the following:
1. Ensure the supply voltage is within specification, refer to GP 7 Machine Specifications. If
possible, connect the machine directly to a known good power supply. If possible, do not
connect the machine to a multiway connector or power strip that is being used to supply
power to other electro-mechanical devices. Card readers, printers and PC's are known to
cause problems for Xerox equipment if they share a power supply.
If the customer's power supply is faulty, inform the customer.
2. Refer to Wiring Diagram 6. Disconnect CN26 from the Main PWB. Check the output volt-
age from the connection PWB PL 3.10 Item 17. If necessary, install a new connection
PWB. If the output voltage from the connection PWB is good, reconnect CN26. Check the
voltage on the main PWB. Repair the wiring as necessary.
3. Refer to Wiring Diagram 2, Wiring Diagram 3, Wiring Diagram 5 and Wiring Diagram 7.
Actuate each component connected to the main PWB. Check that the signal voltage from
each component changes state. Check the wiring or install new components as neces-
sary.
4. Check all connectors on the main PWB. If necessary, remove any oxidisation from the
pins and connectors.
5. If the fault is still present, perform the Software Checks.
Software Checks
The following steps are used to clear any memory or software faults. The customers settings
will be reset to default. Ensure all customer data is recorded before clearing the memory.
Perform the following:
1. Print the System Configuration and Fax Phone Book (TBD) reports, refer to GP 5. Enter
dC132. Initialize the Copier NVM, Network NVM and Fax Card NVM.
2. Reinstall the machine firmware, refer to GP 6 Firmware Upgrade.
3. If the fault is still present, perform the Final Actions.
Final Actions
Perform the following:
1. Install a new main PWB PL 3.10 Item 6.
2. Perform GP 15 Shading Test.
Draft 4
Phaser 3635MFP 2-45
Status Indicator RAPs
OF7