1. IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are
important for safety. These parts are marked by in the Schematic
Diagrams, Circuit Board Layout, Exploded Views and Replacement
Parts List. It is essential that these criticalparts should be replaced
with manufacturer’s specified parts to prevent shock, fire or other
hazards. Do not modify the original design without permission of
manufacturer.
2. An Isolation Transformer should always be used during the servicing
of DVD VCR whose chassis is not isolated from the AC power line.
Use a transformer of adequate power rating as this protects the
technician from accidents resulting in personalinjury from electrical
shocks. It will also protect DVD VCR from being damaged by
accidental shorting that may occur during servicing.
3. When servicing, observe the original lead dress. If a short circuit is
found, replace all parts which have been overheated or damaged by
the short circuit.
4. After servicing, see to it that all the protective devices such as
insulation barriers, insulation papers shields are properly installed.
5. After servicing, make the following leakage current checks to prevent
the customer from being exposed to shock hazards.
LEAKAGE CURRENT COLD CHECK
1. Unplug the AC cord and connect a jumper between the two prongs on
the plug.
2. Measure the resistance value, with an ohmmeter, between the
jumpered AC plug and each exposed metallic cabinet part on the
equipment such as screwheads, connectors, control shafts, etc. When
the exposed metallic part has a return path to thechassis, the reading
should be between 1 M and 5.2 M . When the exposed metal does
not have a return path to the chassis, the reading must be infinity.
LEAKAGE CURRENT HOT CHECK
(See figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation
transformer for this check.
2. Connect a 1.5 k , 10 W resistor, in parallel with a 0.15 F capacitor,
between each exposed metallic part on the set and a good earth
2
Summary of Contents for PV-D4733S-K
Page 15: ...R1522 ERJ6GEYJ103V MGF CHIP 1 10W 10K 15 ...
Page 45: ...Fig 16 1 Fig 16 2 6 1 4 2 REMOVAL OF CSP IC Fig 16 3 45 ...
Page 46: ...6 1 4 3 INSTALLATION OF CSP IC Fig 16 4 46 ...
Page 47: ...Fig 16 5 47 ...
Page 48: ...6 1 4 4 CSP IC LOCATION Fig 16 6 48 ...
Page 134: ...Fig D2 22 ...
Page 139: ...5 2 2 Inner Parts Location Fig J1 1 27 ...
Page 140: ...5 2 3 EJECT Position Confirmation Fig J1 2 28 ...
Page 147: ...5 2 8 Capstan Motor Unit Fig J6 5 2 9 T Loading Arm Unit and S Loading Arm Unit Fig J7 1 35 ...
Page 152: ...5 3 CASSETTE UP ASSEMBLY SECTION 5 3 1 Top Plate Wiper Arm Unit and Holder Unit Fig K1 1 40 ...
Page 168: ...10 2 MECHANISM BOTTOM SECTION 56 ...
Page 169: ...10 3 CASSETTE UP COMPARTMENT SECTION 57 ...
Page 170: ...10 4 CHASSIS FRAME AND CASING PARTS SECTION 58 ...
Page 171: ...10 5 PACKING PARTS AND ACCESSORIES SECTION 59 ...
Page 187: ...75 ...
Page 192: ...80 ...
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Page 202: ...90 ...