Xerox WorkCentre 4150 Service Manual page 174

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
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:
• 4150 Checkout
• 4250/4260 Checkout
• 4265 Checkout
4150 Checkout
NOTE: The main PWB has test points. The location of the test points is shown on the
PWB PJ location illustration.
Refer to Wiring Diagram 3, Wiring Diagram 8
1. Make sure that the backlight level is not turned down.
2. If possible, enter dC305 UI Test. Perform the relevant tests to check the operation of the
UI.
3. Remove the UI, refer to REP 2.1. Check the wiring between the
screen, PL 2.10 Item 2.
4. Check the wiring between CN6 on the
5. Check for +5V and +24V on CN27 on the
perform the following:
• Check the wiring between CON71 on
PWB.
• Install a new power supply unit 1,
• Perform the OF5 Main PWB Check RAP.
6. Install new components as necessary:
• Touch screen, PL 2.10 Item 2.
• UI assembly, PL 2.10 Item 1.
7. Perform the OF5 Main PWB Check RAP.
4250/4260 Checkout
NOTE: The main PWB has test points. The location of the test points is shown on the
PWB PJ location illustration.
Refer to Wiring Diagram 19. Perform the following:
• If possible, enter dC305 UI Test. Perform the relevant tests to check the operation of the
UI.
• Remove the UI, refer to REP 2.2. Check that the ribbon cables between the UI PWB and
the touch screen, PL 2.12 Item 2 are connected and securely held by the locking mecha-
nism on each connector.
• Check the wiring between CN1 on the
WorkCentre 4150/4250/4260WorkCentre WorkCentre 4150/4250/42604150/
WARNING
and Wiring Diagram 10. Perform the following:
UI PWB
UI PWB and CN4 on the Main PWB.
Main PWB. If +5V and +24V are not available,
Power Supply Unit 1 and CN27 on the
PL 1.10 Item 3.
UI PWB and CN2 on the Main PWB.
• Check for +5V and +24V on CN2 on the
perform the following:
– Check the wiring between CON71 on
PWB.
– Install a new power supply unit 1,
– Perform the
• Install new components as necessary:
– Touch screen,
– UI assembly,
• Perform the OF5
4265 Checkout
NOTE: The main PWB has test points. The location of the test points is shown on the
PWB PJ location illustration.
Refer to Wiring Diagram 34, Wiring Diagram 36
Main • If possible, enter
UI.
• Remove the UI, refer to
the touch screen,
nism on each connector.
• Check the wiring between CN8 on the
• Check for +5V and +24V on CN32 on the
and the touch
perform the following:
– Check the wiring between CON71 on
PWB.
– Install a new power supply unit 1,
– Perform the
Main
• Install new components as necessary:
– Touch screen,
– UI assembly,
• Perform the OF5
Main
January 2016
2-101
Main PWB. If +5V and +24V are not available,
Power Supply Unit 1
PL 1.15 Item 3.
OF5 Main PWB Check RAP.
PL 2.12 Item 2.
PL 2.12 Item 1.
Main PWB Check RAP.
and :Wiring Diagram 44.
dC305 UI Test. Perform the relevant tests to check the operation of the
REP 2.3. Check that the ribbon cables between the UI PWB and
PL 2.12 Item 2 are connected and securely held by the locking mecha-
UI PWB and CN5 on the
Main PWB. If +5V and +24V are not available,
Power Supply Unit 1
PL 1.15 Item 3.
OF5 Main PWB Check RAP.
PL 2.12 Item 2.
PL 2.12 Item 1.
Main PWB Check RAP.
and CN18 on the Main
Main
Perform the following:
Main PWB.
and CN33 on the Main
Status Indicator RAPs
OF2