Xerox Phaser 3635MFP Service Manual page 58

OF2 UI, Touch Screen Error RAP
Use this RAP to solve UI touch screen problems when the machine has power but either the
display is missing, is too dark or the UI screen responds incorrectly or does not refresh.
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.
Go to the relevant procedure:
• 3635 Checkout
• 3550 Checkout
3635 Checkout
Refer to Wiring Diagram 4 (3635). Perform the following.
1. If possible, enter dC305 UI Test. Perform the relevant tests to check the operation of the
UI.
2. Remove the UI, refer to REP 2.1. Check the ribbon cables between the
touch screen, PL 2.10 Item 25. Ensure that the locking mechanisms on the smaller con-
nectors CN7 and CN8 are in their locked position.
3. Check the following wiring:
• Between CN2 on the UI PWB and CN6 on
• Between CN1 on the UI PWB and CN11 on
• Between CN11 on the UI PWB
4. If necessary:
a. Install new components:
• Touch screen, PL 2.10 Item
• UI assembly, PL 2.10 Item
b. Perform OF7 Main PWB Check
3550 Checkout
Refer to Wiring Diagram 13 (3550).
1. If possible, enter dC305 UI Test. Perform the relevant tests to check the operation of the
UI.
2. Install new components as necessary:
• UI assembly, PL 2.11 Item 23.
• Start key, PL 2.11 Item 7.
• Job interrupt key, PL 2.11 Item
• Clear all key, PL 2.11 Item 9.
• Power saver key, PL 2.11 Item
• Numerical keys, PL 2.11 Item 12.
• Address book, Manual dial, paper supply or 2 sided print key,
• Navigation keys, PL 2.11 Item
• Copy, E-mail, fax or scan keys,
3. Remove the UI, refer to REP 2.3. Check the ribbon cable between the
right keys PWB, PL 2.11 Item 5.
Phaser 3635MFP/WorkCentre 3550
UI PWB
Main PWB.
Main PWB.
and CN10 on Main PWB.
25.
27.
RAP.
8.
11.
PL 2.11 Item
20.
PL 2.11 Item 21.
UI PWB
4. Between CN1 on the
5. If necessary:
a. Install new components:
• UI PWB, PL 2.11 Item
• Right keys PWB,
b. Perform OF7 Main PWB Check
and the
13.
and the
April 2010
2-49
UI PWB and CN24 on Main PWB.
3.
PL 2.11 Item 5.
RAP.
Status Indicator RAPs
OF2