Toshiba D-R2SU Manuale utente

DVD VIDEO RECORDER

SERVICE MANUAL

FILE NO. 810-200413

D-R2SU

D-R2SC

D-KR2SU

DIGITAL VIDEO

PREPARATION OF SERVICING

Pickup Head consists of a laser diode that is very susceptible to external static electricity.

Although it operates properly after replacement, if it was subject to electrostatic discharge during replacement,

its life might be shortened. When replacing, use a conductive mat, soldering iron with ground wire, etc. to

protect the laser diode from damage by static electricity.

And also, the LSI and IC are same as above.

Ground conductive

wrist strap for body.

Soldering iron

with ground wire

or ceramic type

Conductive mat The ground resistance

between the ground line

and the ground is less than 10

LASER BEAM CAUTION LABEL

When the power supply is being turned on, you may not remove this laser cautions label. If it removes, radiation of a laser

may be received.

SAFETY NOTICE

SAFETY PRECAUTIONS

LEAKAGE CURRENT CHECK

Plug the AC line cord directly into a 120V AC outlet (do

not use an isolation transformer for this check). Use an

AC voltmeter, having 5000 Wper volt or more sensitivity.

Connect a 1500 W10 W resistor, paralleled by a 0.15 mF

150V AC capacitor between a known good earth ground

(water pipe, conduit, etc.) and all exposed metal parts of

cabinet (antennas, handle bracket, metal cabinet

screwheads, metal overlays, control shafts, etc.).

Measure the AC voltage across the 1500 Wresistor.

The test must be conducted with the AC switch on and

then repeated with the AC switch off. The AC voltage

indicated by the meter may not exceed 0.3 V. A reading

exceeding 0.3 V indicates that a dangerous potential

exists, the fault must be located and corrected.

Repeat the above test with the DVD VIDEO RECORDER

power plug reversed.

NEVER RETURN A DVD VIDEO RECORDER TO

THE CUSTOMER WITHOUT TAKING NECESSARY

CORRECTIVE ACTION.

READING SHOULD NOT EXCEED 0.3V

The lightning flash with arrowhead symbol, within an

equilateral triangle, is intended to alert the user to the

presence of uninsulated “dangerous voltage” within the

product’s enclosure that may be of sufficient magnitude to

constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is

intended to alert the user to the presence of important

operating and maintenance (servicing) instructions in the

literature accompanying the appliance.

DVD VIDEO RECORDER AC VOLTMETER

(5000

per volt

or more sensitivity)

Good earth ground

such as a water pipe,

conduit, etc.

1500

10 W

0.15

F 150V AC

AC OUTLET

Test all exposed metal.

Voltmeter Hook-up for Leakage Current Check

SECTION 2

PART REPLACEMENT AND ADJUSTMENT PROCEDURES

SECTION 3

SERVICING DIAGRAMS

1. CIRCUIT SYMBOLS AND

SUPPLEMENTARY EXPLANATION

1-1. Precautions for Part Replacement

1-2. Solid Resistor Indication

1-3. Capacitance Indication

1-4. Inductor Indication

1-5. Waveform and Voltage Measurement

1-6. Others

2. PRINTED WIRING BOARD AND

SCHEMATIC DIAGRAM

3. BLOCK DIAGRAMS

3-1. Overall Block Diagram

4. CIRCUIT DIAGRAMS

4-1. Power Supply Circuit Diagram

4-2. Front Circuit Diagram

4-2-1. Front Jack Circuit Diagram

4-2-2. Front Circuit Diagram (L)

4-2-3. Front Circuit Diagram (R)

4-3. Digital Circuit Diagram

4-3-1. Digital 1 Circuit Diagram

4-3-2. Digital 2 Circuit Diagram

4-4. Mother Circuit Diagram

4-4-1. Tuner Circuit Diagram

4-4-2. Timer Circuit Diagram

4-4-3. Audio Circuit Diagram

4-4-4. Video Circuit Diagram

5. PC BOARDS

5-1. Front Jack PC Board

5-2. Front (L) PC Board

5-3. Front (R) PC Board

5-4. Digital PC Board

5-5. Mother PC Board

CONTENTS

SECTION 1

GENERAL DESCRIPTIONS

1. OPERATING INSTRUCTIONS

1. Replacement of Mechanical Parts

1-1. Cabinet Replacement

1-1-1. Top Cover

1-1-2. Front Panel

1-1-3. Tray Door

1-1-4. Operation Panel Door

1-1-5. RAM Diver

1-1-6. Fan

1-1-7. Rear Panel

1-2. PC Board Replacement

1-2-1. Digital PC Board

1-2-2. Mother PC Board

1-2-3. Power PC Board

1-2-4. Front (R), Front (L), Front (Jack) PC Board

2. LOCATION OF MAIN PARTS

2-1. Location of Main Parts

2-2. Location of PC Boards

SECTION 4

PARTS LIST

SAFETY PRECAUTION

NOTICE

ABBREVIATIONS

1. Integrated Circuit (IC)

2. Capacitor (Cap)

3. Resistor (Res)

4. EXPLODED VIEWS

4-1. Packing Assembly

4-2. Chassis Assembly

5. PARTS LIST

SECTION 1

GENERAL DESCRIPTIONS

1. OPERATING INSTRUCTIONS

Please refer to the owner's manual about the contents.

SECTION 1

GENERAL DESCRIPTIONS

2. LOCATION OF MAIN PARTS

2-1. Location of Main Parts

Fig. 1-2-1

2-2. Location of PC Boards

Fig. 1-2-2

ZG45 FAN

RAM1 RAM DRIVE

EU05 Mother PC board

EU01 Digital PC Board

EU0 Power PC board

EU03A Front (R) PC Board

EU55 Front (Jack) PC Board

EU03B Front (L)

PC Board

1-1. Cabinet Replacement

1-1-1. Top Cover

1. Remove seven screws (1), then remove the top cover (2).

Fig. 2-1-1

SECTION 2

PART REPLACEMENT AND

ADJUSTMENT PROCEDURES

Screws (1)

Top cover (2)

SECTION 2

PART REPLACEMENT AND

ADJUSTMENT PROCEDURES

CAUTIONS BEFORE STARTING PART REPLACEMENT

Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to ground as required.

Many screws are used inside the unit. To prevent the screws from missing or dropping, etc. always use a magnetized

screwdriver in servicing. Several kinds of screws are used and some of them need special cautions. That is, take care of

the tapping screws securing molded parts and fine pitch screws used to secure metal parts. If they are used improperly,

the screw holes will be easily damaged and the parts can not be fixed.

1. REPLACEMENT OF MECHANICAL PARTS

1-1-2. Front Panel

1. Remove the top cover. (Refer to item 1-1-1.)

2. Peel off three tapes (1) and disconnect the flexible cable (2).

3. Disconnect the flexible cable (3) and two connectors (4).

4. Remove the screw (5).

5. Remove two screws (6).

6. Release four claws, then remove the front panel (7).

Fig. 2-1-2

Flexible cable (2)

Flexible

cable (3)

Tapes (1)

Connector (4)

Screws (6)

Screw (5)

Front panel (7)

Claw

Claws

1-1-3. Tray Door

1. Remove the front (R) PC board and front (L) PC board. (Refer to item 1-2-4.)

2. Remove the spring (1).

3. Remove the tray door (2) while slightly bending it.

Fig. 2-1-3

Spring (1)

Tray oor (2)

1-1-5. RAM Drive

1. Peel off four tapes (1).

2. Disconnect two flexible cables (2).

3. Disconnect the connector (3).

4. Remove two screws (4) and acrylic board (5).

5. Remove four screws (6), then remove the RAM drive (7).

1-1-4. Operation Panel Door

1. Open the operation panel door (1).

2. Release two claws and unhinge the door (1).

Fig. 2-1-4

Front panel

Hinge

Claw

Hinge

Operation panel oor (1)

Flexible cable (2)

Flexible

cable (2)

Connector (3)

Tapes (1)

Tape (1)

Acrylic

boar (5)

Screws (6)

Screws (4)

RAM rive (7)

Connector

Claw

Flexible cable (2)

Remove the connector claw

in the irection in icate

by the arrows to release the

flexible cable.

Fig. 2-1-5

1-1-6. Fan

1. Peel off the tape (1).

2. Disconnnect the connector (2).

3. Remove four screws (3) and the fan (4).

Note:

• After replacing the fan (4), attatch the tape (1) as it was.

1-1-7. Rear Panel

1. Remove twelve screws (1), then remove the rear panel (2).

Fig. 2-1-7

Wire (5)

Screws (3)

Connector (2)

Tape (1)

Fan (4)

Acrylic boar

Pass the wire (5)

un erneath the

fol e part.

Screws (1)

Rear panel (2)

Fig. 2-1-6

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