HP 8568B, Performance Tests And Adjustments Manual, Page: 152 / 313

2. High-Voltage Adjustment (SN 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 via
cable harness
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
High-Voltage Regulator Assembly.
6. Connect the jumper wire from chassis ground to the black wire
coming from the High-Voltage Multiplier at
the
wire’s
connection to
H i g h V o l t a g e
1
Figure Discharging the CRT Post-Accelerator Cable
7. Remove all jumper wires. The High-Voltage Regulator,
High-Voltage Multiplier, and CRT assemblies should now be
discharged.
8. A small bracket and screw secure the High-Voltage Regulator
Assembly to the 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 High-Voltage
Regulator Assembly.
3-38 Adjustments