
2. High-Voltage Adjustment (SN 3001A and Below)
4. Connect a jumper wire (insulated wire and two alligator clips)
between the shaft of a small screwdriver and the chassis ground
lug on the inside of the high-voltage shield.
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 W2 1.
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
AlASTl.
AIA3
High Voltage
w21
AlAl
1
Regulator
AlA3T
II
/
/
AlA3Tl
AlA
Figure 3-11. 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.
3-40
Adjustments
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