Button Lockout Mode (4047 Only); Lcd Test; Sensor Test - Lexmark Optra E 4026-0 Series Reference Handbook

Button Lockout Mode (4047 Only)

To test the Button Lockout Mode:
1. Depress and hold the top button and the RETURN button, then
turn the machine on.
2. When the Button Lockout Menu is displayed, select [YES]. The
Lockout Mode is now enabled. Power off the machine to exit this
menu.
3. To disable the Lockout Mode repeat this procedure and select
[NO] on the Button Lockout Menu.
Note: Turning the machine off will not get it out of button lockout
mode.

LCD Test

To test the operator panel display:
1. Enter Diagnostics mode
2. Select [LCD TEST].
3. Select the top button. All pels are displayed.
4. Select the top button again. Every other horizontal row of pels is
displayed.
5. Select the top button again. Every other vertical column of pels is
displayed.
6. Press RETURN to return to the Diagnostics mode main menu.

Sensor Test

1. Enter Diagnostics mode.
2. Select [SENSOR TEST].
3. Select one of the following sensor tests: [TRAY 1], [TRAY 2], or
[INPUT SENSOR].
4. Select [MORE].
5. Select one of the following sensor tests. [EXIT SENSOR].
[COVER OPEN SENSOR].
6. When a sensor is blocked or a switch is activated the display will
change.
7. Press RETURN to return to the Diagnostics mode main menu.
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Laser Printer Reference Handbook