Thermal Dynamics CUTMASTER 39, Руководство по обслуживанию

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cutmaster 39
Manual 0-4976 5-13 SERVICE
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 connec-
tions.
8. Place the failed PC Board in the ESD pro-
tective 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 reconnecting primary
power to the equipment.
5.09 Parts Replacement - General
Information
The parts replacement procedures described in
this manual require that the Power Supply be
opened and partially disassembled. The part to be
replaced will determine the extent of disassembly.
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 re-assem-
bling the unit.
Refer to Section 6 for parts lists and overall de-
tailed drawings.
WARNING
Disconnect the power supply from input
power before opening or disassembling the
power supply.
Before disassembling any part of the Power
Supply first read the procedure for the part to be
replaced, then proceed with the disassembly
5.10 Major External Parts
Replacement
Refer to Section 6 for Major External Replace-
ment Parts and overall detailed drawing.
WARNING
5.11 Front Panel Parts Replacement
Refer to Section 6 for Front Panel Replacement
Parts and overall detailed drawing.
WARNING
Disconnect primary power from the source
before opening or disassembling the power
supply.
A. Output Control (A) Knob Replacement
1. Remove the cover per Subsection 5.07-B.
2. Turn the adjustment knob fully clockwise
and note the location of the pointer on the
knob.
3. Loosen the screw securing the Knob to the
potentiometer shaft and remove the Knob.
4. Place the replacement Knob on the po-
tentiometer shaft with the location of the
pointer the same as noted in step 1.
5. Tighten the screw to secure the knob to the
potentiometer shaft.
B. ON/OFF ( / ) Switch Replacement
1. Remove the cover per Subsection 5.07-B.
2. Disconnect wires E1 and E2 leading from
the switch to terminals E1 and E2 on the
PC Board.
3. Remove Run/Set Switch per Subsection
5.11-C.
4. Remove Output Control knob per Subsec-
tion 5.11-A.
5. Remove the overlay from the front panel.
6. Remove the hardware securing the switch
to the Power Supply front panel.
7. Note the positions of the wires from the
input power cable to the switch.
8. Disconnect the input power cable from the
switch.