Service manual

UCW and Ultraview 1700 Monitors — Service Manual
5-4
Mouse or Keyboard Input
1. Try another mouse or keyboard (there is no setup for the mouse or keyboard, either
externally or internally). Cycle the power ON and OFF after changing the keyboard or mouse
to guarantee that they are seen by the monitor.
2. If this does not correct the problem, inspect the interconnect board and I/O boards. If any
connectors or parts on either of these assemblies appear damaged, replace the damaged
assembly.
3. If this does not correct the problem, replace the CPU board.
Audio Line Output (90387 Only)
1. Independently verify the operation of the equipment being connected to the audio line
output. Replace it if necessary.
2. If the external equipment is known to work correctly, enable key tones on the monitor and
press several touchscreen keys. If tones are not heard through the internal speaker, replace
the CPU board. If tones are heard, inspect the interconnect board and I/O boards. If any
connectors or parts on either of these assemblies appear damaged, replace the damaged
assembly.
3. If this does not correct the problem, replace the CPU board.
Monitor Diagnostics
System integrity and performance verification can be conducted by either automated or manual
diagnostics that assist in system troubleshooting. Automated “power-ON” diagnostics are performed
at each power-ON. If desired, extended diagnostic testing may be performed manually following
manual initiation during system power-ON. Some power-ON tests are not available in the extended
diagnostics and vice-versa.
Power-ON Diagnostics
Power-ON diagnostic tests verify system hardware integrity during each power-ON of a monitor.
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, nondestructively)
• 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)