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

To

minimize shock hazard, use a nonmetallic adjustment tool when adjusting the

 

A6

Power Supply.

 

 

 

 

 

 

Warning The following procedure probes voltages that, if contacted, could cause personal injury or death.

Note

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 Al8 CRT (display) is repaired or replaced.

 

 

 

 

 

 

 

 

Note

You must perform the display adjustments after this adjustment if either the

 

display or HV Module has been replaced.

 

 

 

 

 

 

 

 

D I G I T A L V O L T M E T E R

S K 1 1

Figure 2-1. High-Voltage Power Supply Adjustment Setup

2-12 Adjustment Procedures