Ransburg 9040 Service Manual page 40

9040 Low Voltage Control Unit Kit- Maintenance
HV Adjust Potentiometer
1. Remove knob from HV adjust potentiometer
by using a 1/16" Allen wrench to remove the two
(2) set screws.
2. Ensure control unit is unplugged from AC
outlet, loosen front panel screws, and slide
control unit chassis out.
3. Remove heat shrink tubing and unsolder the
wires from HV adjust potentiometer 1 POT.
It is recommended that the three (3)
>
wires be tagged with their respective
terminal connections to 1POT before
unsoldering.
4. Remove the hex nut securing 1POT to the
front panel and remove 1POT.
5. Install the new potentiometer (see "Parts
Identification" section for this manual for
ordering information) in the front panel.
6. Using heat shrink tubing and appropriate
solder techniques, solder the wires to the new
potentiometer as follows:
From
7PL-1
1SOC-6
7PL-5
IM-
* Indicated 2 connections to the same point.
7. slide chassis in, secure front panel screws,
and plug control unit back in.
8. Reinstall adjust knob using 1/16" Allen wrench.
37
NOTE
To
1POT-1 *
1POT-2
1POT-3
1POT-1 *
PC Board
1. Ensure control unit is unplugged from AC
outlet, loosen front panel screws, and slide
control unit chassis out.
2. Disconnect plugs 6PL, 7PL, and 9PL (see
Figure 4).
3. Remove two (2) screws from heat sink base
and lift the PC board out.
! C A U T I O N
>
DO NOT remove the PC board from the
heat sink as it is an integrated assembly.
5. Insert new PC board (see "Parts Identification"
section of this manual for ordering information)
and secure the two (2) heat sink screws.
6. Reconnect plugs 6PL, 7PL, and 9PL.
7. Slide chassis in, secure front panel screws,
and plug control unit back in.
CP-11-01