Victor CUTMASTER 102, Service Manual

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CUTMASTER 102
Manual 0-4998 PARTS REPLACEMENT
7-1
SECTION 7: REPLACEMENT
PROCEDURES
7.01 Scope
This section describes parts replacement procedures which may
be performed on the CutMaster 52 Power Supply.
Under no circumstances are field repairs to be attempted on
Printed Circuits or other subassemblies of this unit. Evidence
of unauthorized repairs may void the factory warranty.
7.02 Anti-Static Handling Procedures
A. General
CAUTION
PC Boards can be irreparably damaged by improper
handling due to electrostatic discharge (ESD).
Replacement PC Boards are shipped in a protective enclosure
to prevent damage from electrostatic discharge (ESD) during
shipping. A ground strap is included with each replacement
board to prevent static damage during installation.
!
WARNING
Read and understand these instructions and the
instructions on the grounding wrist strap package
before opening the equipment enclosure or remov-
ing the replacement PC board from its protective
enclosure.
Disconnect primary power to the system before
disassembling the torch, torch leads, or power
supply enclosure.
Where these instructions include specific torquing
instructions, failure to torque properly will cause
component damage.
Do not operate the equipment or test equipment un-
der power while wearing the grounding wrist strap.
B. Procedure
1. Open the wrist strap and unwrap the first two folds of
the band. Wrap the adhesive side firmly around your
wrist.
2. Unroll the rest of the band and peel the liner from the
copper foil at the opposite end.
3. Attach the copper foil to a convenient and exposed
electrical ground.
4. Connect the equipment primary cable ground to the
same electrical ground as the wrist strap.
5. Open the equipment enclosure and remove the failed
PC board.
6. Carefully open the ESD protective bag and remove the
replacement PC Board.
7. Install the replacement PC Board in the equipment and
make all necessary connections.
8. Place the failed PC Board in the ESD protective bag
and seal for return shipping.
9. Replace the power supply cover.
10. Remove the grounding wrist strap from your wrist and
from the electrical ground connection before recon-
necting primary power to the equipment.
7.03 Parts Replacement - General
Information
The parts replacement procedures described in this manual,
except for filter replacement, require that the Power Supply be
disassembled. The part to be replaced will determine to what
extent the Power Supply must be disassembled.
Before removing any connection mark each wire with the con-
nection designation. When reassembling make sure the wires
go to the proper terminals.
Note the routing of wires and make sure the wires are put back
in the same place when re-assembling the unit.
Each subsection is referenced to Section 6 for parts lists and
overall detailed drawings.
WARNING
Disconnect primary power from the source before
opening or disassembling the power supply.
7.04 Major External Parts
A. Cover Removal
Tools required: T20 Torx Driver
1. Remove the upper and lower screws which secure the
cover to the main assembly. Do not loosen the lower
screws inside the cut out slots in the bottom of the
cover.
NOTE
The upper screws and lower screws are not the
same. Do not mix them. The upper screws are
for threading into the plastic of the front and rear
panels. DO NOT use the finer threaded lower
screws for this.