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This service manual is intended for qualified service technicians; it is not meant for the casual do-it-
yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to
properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the
warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk
trying to do so and refer the repair to a qualified service technician.
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of
California to cause cancer, birth defects or other reproductive harm.
Health & safety code section 25249.6—Proposition 65
NOTES
(FOR CANADIAN MODEL ONLY)
Fuse symbols
(fast operating fuse) and/or
of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible
remplacement doivent avoir la même désignation.
SAFETY PRECAUTIONS
NOTlCE: Comply with all cautions and safety related notes
located on or inside the cabinet and on the chassis or picture
tube.
The following precautions should be observed:
1. Do not install, remove, or handle the picture tube in any
manner unless shatterproof goggles are worn. People
not so equipped should be kept away while picture tubes
are handled.
Keep picture tube away from the body while handling.
2. When service is required, even though the PROJEC-
TION MONITOR RECEIVER an isolation transformer
should be inserted between power line and the set in
safety before any service is performed.
3. When replacing a chassis in the set, all the protective
devices must be put back in place, such as barriers,
nonmetallic knobs, adjustment and compartment
covershields, isolation resistor-capacitor, etc.
4. When service is required, observe the original lead
dress.
Extra precaution should be taken to assure correct lead
dress in the high voltage circuitry area.
5. Always use the manufacturer's replacement compo-
nents. Especially critical components as indicated on the
circuit diagram should not be replaced by other
manufacture's.
Furthermore where a short circuit has occurred, replace
those components that indicate evidence of overheating.
SAFETY INFORMATION
(slow operating fuse) on PCB indicate that replacement parts must be
(fusible de type rapide) et/ou
(fusible de type lent) sur CCI indiquent que les pièces de
6. Before returning a serviced set to the customer, the ser-
vice technician must thoroughly test the unit to be certain
that it is completely safe to operate without danger of
electrical shock, and be sure that no protective device
built into the set by the manufacturer has become defec-
tive, or inadvertently defeated during servicing.
Therefore, the following checks should be performed for the
continued protection of the customer and service technician.
Leakage Current Cold Check
With the AC plug removed from 120V AC 60Hz source,
place a jumper across the two plug prongs. Turn the AC
power switch on. Using an insulation tester (DC 500V), con-
nect one lead to the jumpered AC plug and touch the other
lead to each exposed metal part (input/output terminals,
screwheads, metal overlays, control shafts, etc.), particu-
larly any exposed metal part having a return path to the
chassis. Exposed metal parts having a return path to the
chassis should have a minimum resistor reading of 0.3MΩ
and a maximum resistor reading of 5MΩ. Any resistor value
below or above this range indicates an abnormality which
requires corrective action. Exposed metal parts not having a
return path to the chassis will indicate an open circuit.
3
64LHP5000
PROJECTOR UNIT
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