Manual 0-2587
29
REPLACEMENT PROCEDURES
SECTION 5:
REPAIRS & REPLACEMENT
PROCEDURES
5.01 Introduction
This Section describes parts replacement procedures and
all cable repairs which may be performed on the Pak
Master 50XL 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.
5.02 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 en-
closure to prevent damage from electrostatic discharge
(ESD) during shipping. Included with each replacement
board is a ground strap to prevent static damage during
installation.
WARNINGS
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 dis-
assembling the torch, torch leads, or power supply
enclosure.
Do not operate the equipment or test equipment
under 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 (see instruction
manual for the appropriate equipment) and re-
move 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. Reassemble the equipment enclosure (see instruc-
tion manual for the appropriate equipment).
10. Remove the grounding wrist strap from your wrist
and from the electrical ground connection before
reconnecting primary power to the equipment.
5.03 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.
NOTES
Before removing any connection mark each wire
with the connection designation. When reassem-
bling make sure the wires go to the proper termi-
nals.
Note the routing of wires and make sure the wires
are put back in the same place when reassembling
the unit.
Each Subsection is referenced to Section 6 for parts lists
and overall detailed drawing.
WARNING
Disconnect primary power from the source before
opening or disassembling the power supply. Make
sure AC indicator on the Power Supply front panel
is OFF.
Summary of Contents for Thermal Dynamics PAK MASTER 50XL
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Page 16: ...INTRODUCTION 10 Manual 0 2587...
Page 45: ...Manual 0 2587 39 PARTS LISTS A 01381 2 1 3 4 5 2...
Page 47: ...Manual 0 2587 41 PARTS LISTS A 01065 1 2 3 4 5 6 7 8...
Page 49: ...Manual 0 2587 43 PARTS LISTS A 01382 2 4 1 3 5...
Page 53: ...Manual 0 2587 47 PARTS LISTS A 01068 1 6 2 14 12 16 10 15 9 8 7 3 5 5 4 13 17 11...
Page 55: ...Manual 0 2587 49 PARTS LISTS A 01383 14 6 2 11 13 15 7 12 3 8 10 9 4 1 5...
Page 72: ...APPENDIX 66 Manual 0 2587 APPENDIX XII SYSTEM SCHEMATIC A 01370 1 2 1 2...
Page 73: ...Manual 0 2587 67 APPENDIX A 01370 B EC 8055 HAS 11 23 98...
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