Toshiba RD-X2U User manual

HDD/DVD VIDEO RECORDER
SERVICE MANUAL
Oct., 2002
S
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.
1M W
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 W .

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 W per volt
or more sensitivity)
Good earth ground
such as a water pipe,
conduit, etc.
1500 W
10 W
0.15 m 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)
Screws (1)
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)
Tape (2)
Flexible cable (4)
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
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)