1. High Voltage Power Supply Adjustment
1. High Voltage Power Supply Adjustment
Assembly
Adjusted
A6 power supply
Related
Performance
Test
There is no related performance test for this adjustment.
Description
The high voltage power supply is adjusted to the voltage marked on the
A6Al
HV module.
The
A6Al
HV module is characterized in the factory to ensure that the display filament
voltage is set to 6.0 V rms when the
+llO
Vdc (
nominal) supply is set to the voltage marked
on the HV module.
Warning
n
To minimize shock hazard, use a nonmetallic adjustment tool when adjusting
the A6 power supply.
n
The following procedure probes voltages that, if contacted, could cause
personal injury or death.
Note
w
Adjustment of the high voltage power supply should not be a routine
maintenance procedure. Any adjustments should be done only if the A6
power supply,
A6Al
HV module, or
A18Vl
CRT (display) is repaired or
replaced.
n You must perform the display adjustments after this adjustment if either the
display or HV module has been replaced.
PO%=
A6TP405
DIGITAL VOLTMETER
fEz*-
DVM TEST LEADS
J
SPECTRUM ANALYZER
Figure 2-1. High Voltage Power Supply Adjustment Setup
SK1 1
Adjustment Procedures 2-13
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