Service manual

Ultraview 1030/1050 Monitors — Service Manual
5-5
Troubleshooting
Power ON Diagnostics
Power-ON diagnostic tests verify system hardware integrity during each power-up of a monitor.
These tests in themselves can often help isolate and troubleshoot a problem. Most of these tests
may also be initiated using the extended diagnostic mode. The diagnostics initiated at power-ON
are:
• CPU (reads and writes control registers and does an internal wrap around of one serial
communication controller channel)
• DRAM Read/Write (reads and writes DRAM above 1 MB)
• Real time clock (verifies that the clock is running)
• GDS SRAM (reads and writes all of the SRAM, non destructively)
• PCI bridge (reads and writes control registers)
• ISA bridge (reads and writes control registers)
• Video (tests the video memory, the video controller, hsync, and blue video signals)
• Ethernet (comprehensive internal wrap around)
• Flash checksum (checksums all of flash memory)
• Touchscreen (tests the touchscreen controller and the IR detector/emitter pairs)
• Keyboard and mouse controller (reads and writes control registers, runs a self-test, and
checks on-card keyboard, and mouse signals)
• Audio (reads and writes control registers in the codec)
Power-ON diagnostics failures are reported in the upper left-hand corner window of the System
Startup screen. Refer to System Startup on page 5-2 for more information.
Any error that occurs during one of these tests is logged in the non-volatile configuration memory.
Refer to Error Log on page 5-11 to retrieve the log.
Extended Diagnostics
Extended diagnostic tests, like the power ON diagnostics can be used to troubleshoot and isolate
many system failures. The kinds of tests and features available in the extended diagnostics are:
• The Power-ON Diagnostics
• Interactive tests and read/write memory tests that are not appropriate during power-ON
diagnostics
• Touchscreen calibration and data dump utilities
• System data dump and system reset utilities
The diagnostics menus allow most of these tests to be run individually or all at once. If Loop mode
is activated, a test(s) can be executed in a continuous loop. If Halt On Error mode is activated,
then the looping stops when a diagnostic failure is detected. To avoid false failures, do not use the
touchscreen, mouse, or keyboard while the diagnostics are executing.
Extended diagnostics failures are reported in the upper left-hand corner window of the System
Startup screen. Refer to System Startup on page 5-2 for more information.
Any error that occurs during one of these tests is logged in the non-volatile memory. Refer to Error
Log on page 5-11 to retrieve the log.