Service manual

Ultraview 1030/1050 Monitors — Service Manual

5-10

Touch the t key in the Individual Diagnostic menu to present the Touchscreen menu:

Figure 5-8: Touchscreen menu

The following keys are available in this menu:

r — returns to the Individual Diagnostics menu.

— runs the power-ON touchscreen diagnostic.

i — runs an interactive touchscreen diagnostic; this shows a marker for each beam as the

beam is broken; the power must be cycled to end the test.

d — this dumps touchscreen calibration data to the screen; this is composed of the min and

max beam drive values and a list of dead beams.

c — performs a calibration of the touchscreen.

Diagnostic LED

If during the boot process the CPU determines that it cannot continue to boot and cannot display

the usual System Startup screen and Boot menu, the CPU will stop booting and repeatedly flash

an error code on a diagnostic LED. The diagnostic LED is located just under the front center edge

to the display bezel.

During the boot process, the LED normally flashes on about once every four seconds to indicate

that it is working. If the CPU cannot boot, the LED flashes an hexidecimal error code with the most

significant character first. Leading zeros are not displayed. Each character is represented by a

series of short flashes that count up to the character value (e.g., two flashes = 2 hex, fifteen

flashes = F hex, etc.). A zero character is indicated by a long flash. Each character is separated by

a short pause. After the error code is completed, the LED pauses for about four seconds before

repeating the error code. Error codes and their meanings are given in the Diagnostics Failure

Messages and Error Codes on page 5-11.

TOUCHSCREEN MENU

t - Touchscreen Diagnostic *

i - Interactive Touchscreen Diagnostic

d - Touchscreen Data Dump

c - Calibrate Touch Screen

r - Return To Previous Menu

dcr