HP 8568B High-Voltage, 2.High-VoltageAdjustment (SN 3001A and Below), Figure 3-l1. Discharging the CRT Post-AcceleratorCable

2.High-Voltage Adjustment (SN 3001A and Below)

5.While holding the insulated handle of the screwdriver, touch the grounded blade to the following connections:

a.Both brown wires going to the rear of the CRT from AlA via cable harness W21.

b.The yellow, blue, and orange wires in the same cable as “a. ” above.

c.The top lead of each of the 11 large vertical capacitors on the AlA High-Voltage Regulator Assembly.

6.Connect the jumper wire from chassis ground to the black wire coming from the AlAll High-Voltage Multiplier at the wire’s connection to AlA3Tl.

AlA

H i g h V o l t a g e

,T 1

AlA3TlAIA3

Figure 3-l 1. Discharging the CRT Post-Accelerator Cable

7.Remove all jumper wires. The AlA High-Voltage Regulator, AlAll High-Voltage Multiplier, and AlVl CRT assemblies should now be discharged.

8.A small bracket and screw secure the AlA High-Voltage Regulator Assembly to the AlAlO Display Motherboard Assembly. The bottom cover of the IF-Display Section must be removed to gain access to this screw prior to removal of the AlA High-Voltage Regulator Assembly.

3-38 Adjustments