Chapter 6 — Service and Repair
©2006 Global VR, Inc.
040-0120-01 Rev. B 10/10/2006
Page 31 of 56
6.
Remove the glass display shield and plastic monitor bezel.
7.
Remove the four (4) 1/4-20 monitor mounting nuts, as shown in Figure 25.
Figure 25.
Monitor Mounting Nut Locations
Components in the monitor chassis can be charged with a VERY HIGH
VOLTAGE even when powered OFF.
The monitor is very heavy. Two-person lifting is advised.
8.
Carefully remove the monitor through the front of the cabinet and set it in a safe place. Most of
the weight of the monitor is in the CRT at the front of the monitor.
9.
Reverse these steps to re-install the monitor. Always clean the front of the CRT and the glass
display shield before re-installing.
10.
After replacing a monitor, use the Monitor Calibration screens from
System Tests
in the
Operator Menu to verify proper operation and adjust the monitor (see page 12).
Wells-Gardner
®
Monitor Chassis PCB Removal
You can replace the monitor chassis PCB if you have problems with just the PCB.
Caution: Only a certified technician should attempt to remove or service the
Monitor PCB. GLOBAL VR assumes no responsibility for damage while
removing the PCB.
To prevent electrostatic discharge (ESD) damage, handle PCBs by the edges
only and use a grounding wrist strap or similar precaution.
1.
Turn the cabinet OFF and disconnect the AC power cord.
2.
As a precaution, discharge the second anode with a high-voltage probe or high-voltage resistant
screwdriver connected to the monitor chassis frame with an 18 AWG wire.
3.
Remove the four nuts that hold the monitor chassis to the monitor frame.
4.
Remove the two 4/40 Jack nuts that hold the video signal PCB to the monitor frame. See Figure
26.
Summary of Contents for Aliens Extermination
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