Thermal Dynamics Pak Master 75XL Plus, Руководство по обслуживанию

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Manual 0-2747 5-1 REPLACEMENT PROCEDURES
SECTION 5:
REPLACEMENT
PROCEDURES
5.01 Introduction
This Section describes parts replacement procedures and
all cable repairs which may be performed on the Pak Mas-
ter 75XL PLUS 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
Replacement PC Boards are shipped in a protective enclo-
sure to prevent damage from electrostatic discharge (ESD)
during shipping. Included with each replacement board
is a ground strap to prevent static damage during installa-
tion.
WARNINGS
PC Boards can be irreparably damaged by improper
handling due to electrostatic discharge (ESD).
Read and understand these instructions and the in-
structions 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 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 (see instruction
manual for the appropriate equipment) 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. 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 de-
termine to what extent the Power Supply must be disas-
sembled.
NOTES
Before removing any connection mark each wire with
the connection 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 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.
Before disassembling any part of the Power Supply first
read the procedure for the part to be replaced, then pro-
ceed with the disassembly.