1. SAFETY INFORMATION
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
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.
REMARQUE
(POUR MODéLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les piŹces
de remplacement doivent avoir la m?me dŽsignation.
1.1 SAFETY PRECAUTIONS
NOTICE :Comply with all cautions and safety related notes located7. Perform the following precautions for the PDP panel.
on or inside the cabinet and on the chassis.Y When the front case is removed, make sure nothing hits the
The following precautions should be observed :panel face, panel corner, and panel edge (so that the glass does
1. When service is required, even though the PDP UNIT an isolationnot break).
transformer should be inserted between the power line and theY Make sure that the panel vent does not break. (Check that the
set in safety before any service is performed.cover is attached.)
2. When replacing a chassis in the set, all the protective devicesY Handle the FPC connected to the panel carefully.
must be put back in place, such as barriers, nonmetallic knobs,Twisting or pulling the FPC when connecting it to the connector
adjustment and compartment covershields, isolation resistor-will cause it to peel off from the panel.
capacitor, etc.8. Pay attention to the following.
3. When service is required, observe the original lead dress. ExtraY Be sure to wire the fan. If the fan does not work, the temperature
precaution should be taken to assure correct lead dress in thewill rise and cause the protection circuit to operate.
high voltage circuitry area.Y When the front case is removed, infrared ray is radiated and
4. Always use the manufacture's replacement components.may disturb reception of the remote control unit.
Especially critical components as indicated on the circuit diagramY Pay extreme caution when the front case and rear panel are
should not be replaced by other manufacture's.removed because this may cause a high risk of disturbance to
Furthermore where a short circuit has occurred, replace thoseTVs and radios in the surrounding.
components that indicate evidence of overheating.
5. Before returning a serviced set to the customer, the service
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
manufacture has become defective, or inadvertently defeated
during servicing. Therefore, the following checks should be
performed for the continued protection of the customer and
service technician.
6. Perform the following precautions against unwanted radiation
and rise in internal temperature.
Y Always return the internal wiring to the original styling.
Y Attach parts (Gascket, Ferrite Core, Ground, Rear Cover,
Shield Case etc.) surely after disassembly.
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ACEC
HITACHI
