Toshiba RD-X2U Manuale utente

HDD/DVD VIDEO RECORDER

SERVICE MANUAL

Oct., 2002

FILE NO. 810-200220

RD-X2U

LASER BEAM CAUTION LABEL

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

laser may be received.

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

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 PLAYER 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 PLAYER 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, Switch Circuit Diagram

4-3. Front Jack Circuit Diagram

4-4. Front Display Circuit Diagram

4-5. Battery Circuit Diagram

4-6. Mother Circuit Diagram

4-6-1. Timer Circuit Diagram

4-6-2. Audio Circuit Diagram

4-6-3. Video / Tuner Circuit Diagram

4-7. Digital Circuit Diagram

5. PC BOARDS

5-1. Front Switch PC Board

5-2. Front Jack PC Board

5-3. Battery PC Board

5-4. Front Display PC Board

5-5. Mother PC Board

5-6. Digital PC Board

CONTENTS

SECTION 1

GENERAL DESCRIPTIONS

1. OPERATING INSTRUCTIONS

Specifications

1. REPLACEMENT OF MECHANICAL PARTS

1-1. Cabinet Replacement

1-1-1. Top Cover

1-1-2. HDD

1-1-3. Front Panel

1-1-4. Tray door

1-1-5. Operation panel door

1-1-6. RAM Drive

1-1-7. Fan

1-1-8. 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. Battery PC Board

1-2-5. Front Display, Front Jack and Front Switch PC Board

2. LOCATION OF MAIN PARTS AND

MECHANISM PARTS

2-1. Location of Main Parts

2-2. Standing PC Boards for Servicing

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 AND MECHANISM PARTS

2-1. Location of Main Parts

Fig. 1-2-1

2-2. Standing PC Boards for Servicing

HDD1 HDD UNIT RAM1 RAM DRIVE

ZG45 FAN

Fig. 1-2-2

EU05 Mother PC board EU01 Degita PC board

EU02 Power PC board

EU57 Battery PC board

EU04 Front switch PC board

EU03 Front disp ay

PC board

EU55 Front jack PC board

SECTION 2

PART REPLACEMENT AND

ADJUSTMENT PROCEDURES

CAUTIONS BEFORE STARTING SERVICING

Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to take a proper grounding

treatment as required.

Many screws are used inside the unit. To prevent missing, dropping, etc. of the screws, always use a magnetized screw-

driver 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. Cabinet Replacement

1-1-1. Top Cover

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

(2).

Fig. 2-1-1

1-1-2. HDD

1. Disconnect a connector (1).

2. Remove four screws (2) and a connector (3), then

remove the HDD (4).

Fig. 2-1-2

SECTION 2

PART REPLACEMENT AND

ADJUSTMENT PROCEDURES

Screws (1)

Top cover (2)

Screws (2) Connector (3)

HDD (4)

Connector (1)

1-1-5. Operation panel door

1. Open the operation panel door (1).

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

operation on the left and right doors.)

Fig. 2-1-5

1-1-6. RAM Drive

1. Remove the HDD. (Refer to item 1-1-2.)

2. Remove the front panel. (Refer to item 1-1-3.)

3. Disconnect a connector (1).

4. Remove four screws (2), disconnect a connector (3),

then remove the RAM drive (4).

Fig. 2-1-6

Screws (1)

Connector (3)

Front panel (5)

Tape (2)

Flexible cable (4)

Claw

Claws

Claw

1-1-3. Front Panel

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

2. Remove the HDD. (Refer to item 1-1-2.)

3. Remove five screws (1).

4. Peel off two tapes (2).

5. Disconnect a connector (3) and three flexible cables

(4).

6. Release five claws, then remove the front panel (5).

Fig. 2-1-3

1-1-4. Tray door

1. Remove a spring (1).

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

Fig. 2-1-4

Front panel

Hinge

Claw

Operation panel door (1)

Screws (2)

Connector (3)

Connector (1)

RAM drive (4)

Spring (1)

Tray door (2)

1-1-7. Fan

1. Remove a connector (1) and two screws (2) and the

fan (3).

Fig. 2-1-7

1-1-8. Rear Panel

1. Disconnect a connector (1) and twelve screws (2),

then remove the rear panel (3).

Fig. 2-1-8

Connector (1)

Fan (3)

Screws (2)

Connector (1)

Real panel (3) Screws (2)

1-2. PC Board Replacement

1-2-1. Digital PC Board

1. Lift two board stoppers up in the direction of the

arrow, remove the digital PC board (2) and disconnect

two connectors (3).

Fig. 2-1-9

1-2-2. Mother PC Board

1. Remove the HDD. (Refer to item 1-1-2.)

2. Remove the front panel. (Refer to item 1-1-3.)

3. Remove the RAM drive. (Refer to item 1-1-6.)

4. Remove the rear panel. (Refer to item 1-1-8.)

5. Remove the digital PC board. (Refer to item 1-2-1.)

6. Lift the connector (1) up in the direction of the arrow.

7. Remove six screws (2), then remove the mother PC

board (3).

Fig. 2-1-10

Digital PC board (2)

Connector (3)

PC board stopper (1)

Connector (1)

Mother

PC board (3)

Screws (2)

1-2-3. Power PC Board

1. Disconnect three connectors (1).

2. Lift a connector (2) up towards the mother board side,

and remove it.

3. Remove a screw (3), five screws (4) and the power PC

board (5).

Fig. 2-1-11

1-2-4. Battery PC Board

1. Disconnect a connector (1) and remove a screw (2)

and the battery PC board (3).

Fig. 2-1-12

1-2-5. Front Display, Front Jack and Front Switch

PC Board

1. Remove the front panel. (Refer to item 1-1-3.)

2. Remove nine screws (1), then remove the stay (2).

3. Remove four screws (3), then remove the front display

PC board (4).

4. Remove four screws (5), then remove the front jack

PC board (6).

5. Remove two screws (7), then remove the front switch

PC board (8).

Fig. 2-1-13

Screws (4)

Connector (2)

Connector (1)

Power

PC board (5)

Connector (1)

Screws (3)

Mother PC board

Screws (2)

Battery PC board (3) Connector (1)

Stay (2)

Screws (1)

Screws (7)

Screws (3)

Front

switch PC board (8)

Front panel

Front display PC board (4)

Front

jack PC board (6)

Screws (5)

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