Service manual

Ultraview 1030/1050 Monitors — Service Manual
5-16
Caution:
• When troubleshooting, partial disassembly may be required. Ensure that the
external power supply and rechargeable battery(ies) are disconnected. Use a
nonconductive shield to insulate the main PCBA from the front bezel assembly (a
book or piece of cardboard will suffice).
• The ends of the cables that connect front bezel the main PCBA to the touchscreen
and the display must be handled with care. When disconnecting these cables, the
latch should be gently lifted using finger pressure. A broken latch will still lock the
cable into the connector, but it will not provide guidance for centering the cable into
the connector.
6 Remove the front bezel assembly. Once the main PCBA is accessible, check the cable
connections between the display and the main PCBA, and verify that the backlight is visible.
If the entire display is garbled or distorted:
• Check the cables and connectors interfacing the display to the main PCBA. A patient
parameter module may need to be installed to view the top half of the display. If the
connections are OK, replace first the main PCBA, then the display screen.
Caution:
Please do not attempt to troubleshoot the display backlight electronics. There are very
HIGH AC voltages in this area. Only qualified Spacelabs Medical personnel should
attempt to troubleshoot this section.
Touchscreen Troubleshooting
Required Tools/Test Equipment
#1 Phillips screwdriver
If the display is present but the touchscreen is unresponsive:
1 Check that the surface of the display screen is clean and clear of tape or other foreign material
that might block the infrared beams.
2 Calibrate the touchscreen (refer to Diagnostic Menus on page 5-6) using the mouse or
keyboard. Check the operation again.
3 Run the Interactive Touchscreen test (refer to Diagnostic Menus on page 5-6). All beam
markers should appear. If some do and others do not, the touchscreen PCBA is faulty.
4 Remove the external power supply and battery(ies) and check the connections interfacing the
touchscreen to the main PCBA. If the connections are okay, first replace the Infrared
touchscreen (IRTS) PCBA, and then the main PCBA.