1-2 Servicing Precautions
1. Servicing precautions are printed on the
cabinet. Follow them.
2. Always unplug the unit’s AC power cord from
the AC power source before attempting to: (a)
Remove or reinstall any component or
assembly, (b) Disconnect an electrical plug or
connector, (c) Connect a test component in
parallel with an electrolytic capacitor.
3. Some components are raised above the printed
circuit board for safety. An insulation tube or
tape is sometimes used. The internal wiring is
sometimes clamped to prevent contact with
thermally hot components. Reinstall all such
elements to their original position.
4. After servicing, always check that the screws,
components and wiring have been correctly
reinstalled. Make sure that the portion around
the serviced part has not been damaged.
5. Check the insulation between the blades of the
AC plug and accessible conductive parts
(examples: metal panels, input terminals and
earphone jacks).
6. Insulation Checking Procedure: Disconnect the
power cord from the AC source and turn the
power switch ON. Connect an insulation
resistance meter (500V) to the blades of the AC
plug.
The insulation resistance between each blade
of the AC plug and accessible conductive parts
(see above) should be greater than 1 megohm.
7. Never defeat any of the B+ voltage interlocks.
Do not apply AC power to the unit (or any of
its assemblies) unless all solid-state heat sinks
are correctly installed.
8. Always connect a test instrument’s ground
lead to the instrument chassis ground before
connecting the positive lead; always remove
the instrument’s ground lead last.
9. When some parts inside the optical engine
(except lamp) are damaged, replace the whole
optical engine.
Precautions
Samsung Electronics
1-3
Warning 1 : First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a
conflict between the servicing and safety precautions, always follow the safety precautions.
Warning 2 : An electrolytic capacitor installed with the wrong polarity might explode.
Summary of Contents for PT5492X
Page 15: ...Samsung Electronics 4 9 Alignment and Adjustments 4 5 1 PT5492 4 5 Screen Jig ...
Page 19: ...Samsung Electronics 4 13 Alignment and Adjustments 4 7 Convergence Adjustment ...
Page 20: ...4 14 Samsung Electronics Alignment and Adjustments ...
Page 21: ...Samsung Electronics 4 15 Alignment and Adjustments ...
Page 22: ...4 16 Samsung Electronics Alignment and Adjustments ...
Page 23: ...Samsung Electronics 4 17 Alignment and Adjustments ...
Page 24: ...4 18 Samsung Electronics Alignment and Adjustments ...
Page 32: ...4 26 Samsung Electronics Alignment and Adjustments 4 9 7 MTS Module ...
Page 38: ...MEMO 5 4 ...
Page 45: ...8 4 MEMO ...
Page 53: ...10 7 CRT Schematic Diagrams Samsung Electronics 10 7 ...
Page 55: ...10 9 CONVERGENCE MDL 1 Schematic Diagrams Samsung Electronics 10 9 ...
Page 56: ...Schematic Diagrams 10 10 Samsung Electronics 10 10 CONVERGENCE MDL 2 ...
Page 58: ...Schematic Diagrams 10 12 Samsung Electronics 10 12 2D COMB Power Line Signal Line ...
Page 59: ...10 13 PIP Schematic Diagrams Samsung Electronics 10 13 ...
Page 60: ...Schematic Diagrams 10 14 Samsung Electronics 10 14 TERMINAL 1 ...
Page 61: ...Schematic Diagrams Samsung Electronics 10 15 10 15 TERMINAL 2 ...
Page 62: ...Schematic Diagrams 10 16 Samsung Electronics 10 16 IF V M MODULE ...
Page 63: ...10 17 CHROMA INTERLACE ONLY Schematic Diagrams Samsung Electronics 10 17 ...
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