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• SERVICE MIRROR
The backglass doubles as a service mirror when the playfield glass has been removed from the
cabinet. Place the backglass - shiny side up - under the monitor. The black plastic knobs hold it in
place.
• FLUORESCENT PARTS
If you drop a fluorescent tube or a CRT and it breaks, it will Implode! Use care in handling.
Wear protective gloves and use both hands when carrying or moving parts made of glass.
Fluorescent tubes and CRTs will usually implode if broken. Glass pieces can fly eight feet (two
meters) or more from the point of impact.
Remove the backglass. Remove both plastic lamp locks. Grasp the bulb at each end and give it a
quarter turn. Gently pull the bulb straight out to remove it from its socket. The starter also requires a
quarter turn for removal. Do not force the bulb or starter during reinstallation. Clean the bulb to
remove fingerprints and dust, then reinstall the backglass.
To remove the entire light fixture, remove the lamp locks and the bulb as described above.
Disconnect the fluorescent light assembly connector from its power cable. Remove the screws that
hold the assembly to the cabinet, then lift out the assembly.
• HIGH VOLTAGE CONSIDERATIONS
CRTs and their power supplies can retain energy for long periods of time after the power has been
turned off. This is especially true when a defective circuit prevents a normal discharge. Connect a
very well insulated ground strap to the metal chassis. Slide the free end of the strap under the CRT
anode cap until contact is made. Wait two minutes for charge recovery, then discharge the anode a
second time.
• RADIATION
The high voltages used in the Monitor Assembly are capable of generating X-rays under fault
conditions. Do not substitute high voltage components or modify the circuit without factory
authorization. Follow manufacturer's directions for measuring and adjusting the CRT anode voltage.
• CIRCUIT PROTECTION
To avoid equipment damage, any replacement fuse must match the original in fuse type, voltage
rating, and current rating. Do not use fuses with different time delaycharacteristics.
• MONITOR
Unlock and remove the backbox rear door. Disconnect all of the cables going to the monitor.
Remove the four flange nuts securing the monitor's mounting brackets to its mounting panel.
CAREFULLY, pull the monitor from the backbox. Clean the face of the monitor before reinstalling it.
&CAUTION
THE VIDEO MONITOR IS HEAVY, WITH MOST OF THE WEIGHT TOWARD THE FRONT OF THE
ASSEMBLY. Be sure it is firmly supported as it is removed from the cabinet. The monitor does
require isolation from the A.C. line voltage in normal operation. Whenoperating outside the backbox
or servicing the monitor on a test bench, YOU MUST ISOLATE THE MONITOR FROM LINE
VOLTAGE WITH A TRANSFORMER. THE MONITORMUST BE POWEREDAT 120V.
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