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SUBASSEMBLY REMOVAl AND REPLACEMENT
INTRODUCTION
This section describes how to remove and replace the major subassemblies of
the QVT -101
Before begi nni ng, place the Power On/Off swi tch in the OFF
position and disconnect the power cord from the power source. Thoroughly read
each procedure before attempting any subassembly removal and replacement.
SAFETY SUtl4ARY
Always remember that the terminal modules contain extremely high voltages.
If
proper precautions are not taken, contact with these voltages can result in
injury. Observe the following precautions.
•
•
•
Unless otherwise instructed by procedures in this manual, always turn
off the terminal power with the rocker-type power switch on the rear of
the_ mon; tor base and unplug the power cord from the monitor before
removing the cover or attempting subassembly removal or adjustment.
Always read the removal and replacement instructions carefully before
attempting the removal of any subassembly.
-
Take special precautions when working with the CRT.
Do not scratch or
strike the CRT, or subject it to unusual pressure.
The CRT contains a
high vacuum; breaking the CRT may cause injury from flying glass or
high voltages.
As a precaution wear eye protection when working with
the CRT.
REQUIRED TOOLS
The tools required for removal and replacement of subassemblies are listed
below_
•
•
•
Phillips screwdriver, medium (No.2 tip)
Soldering equipment
Keycap extraction tool (Qume Part Number 84873-01)
lower Monitor Area
The lower monitor area contains the Power/logic PCB and the line transformer,
and brightness control.
CAUTION
Hazardous voltages are exposed in the general
area of the AC input circuit, line trans-
former, and power supply.
Before performing
any service in the lower monitor area, power
OFF the terminal and disconnect the power
cord.
2-1
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