Archive, Service level, Replacement – Ransburg MGS Multi-Gun Source 76789, 77046 User Manual

Page 26

CP-99-01

ALWAYS

ALWAYS turn power to the MGS unit OFF

OFF

OFF,

unplug the electrical cord from its outlet, and
remove the front panel fuse, BEFORE

BEFORE

BEFORE making

repairs or replacements.

Personnel who service this unit must be qualified
electronics technicians.

Replacement parts are designed to be made at the
assembly level. (See PARTS IDENTIFICATION
section of this manual for replacement assemblies).

> DO NOT

DO NOT

DO NOT attempt to make repairs to the

printed circuit boards! Do not attempt to make
repairs beyond those described. All others
should be made ONLY

ONLY

ONLY by ITW Ransburg

service personnel.

Before making replacements, check for defective
wiring or connections between the affected
components. If there is broken wire, defective
insulation or dirty, loose or corroded connections,
repair or replace them before going to the expense
of replacing a component.

PC Board Fuses F1 and F2

See Figures 7 & 8

See Figures 7 & 8
1. Ensure MGS unit is unplugged from AC outlet
and open cabinet door.

2. Replace defective fuse (See PARTS IDENTIFI-
CATION section of this manual for fuse part
numbers) on door mounted control unit PC
board or MGS PC Board.

3. Close cabinet door, secure, and plug MGS unit
back in.

4. Remove the hex nut securing 1POT to the
bracket and remove 1POT.

5. Install the new potentiometer. (See PARTS
IDENTIFICATION section of this manual for
ordering information).

6. Using heat shrink tubing and appropriate
solder techniques solder the wires to the new
potentiometer as follows:

SERVICE LEVEL

W A R N I N G

C A U T I O N

REPLACEMENT

PROCEDURES

1. Insert screwdriver into slot in front panel fuse
holder, push in, and rotate counterclockwise.

2. Remove screwdriver and fuse holder will slide
out.

3. Remove fuse from fuse holder and replace.
(See PARTS IDENTIFICATION section of
this manual for fuse part number).

4. Insert fuse holder back into front panel and with
a slight inward pressure, rotate screwdriver
clockwise until it locks into place.

Front Panel Fuse 1FU

1. Ensure MGS unit is unplugged from AC
outlet and open cabinet door.

2. Remove knob from HV adjust potentiometer
by using a 1/16" allen wrench to remove the
two set screws.

3. Remove heat shrink tubing and unsolder the
wires from HV adjust potentiometer 1 POT.

HV Adjust Potentiometer

N O T E

> It is recommended that the three wires
be tagged with their respective terminal
connections to 1 POT before unsolder-
ing.

7PL-1

1POT-1

1TB-7

1POT-2

1TB-6

1POT-3

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