Toshiba D-R1SB User manual

DVD VIDEO RECORDER
SERVICE MANUAL
December, 2003 Y
FILE NO. 810-200338
D-R1SB
D-R1SF
D-R1SG
DIGITAL VIDEO

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.
1MΩ
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 10Ω.

SECTION 2
PART REPLACEMENT AND ADJUSTMENT PROCEDURES
SECTION 3
SERVICING DIAGRAMS
1. CIRCUIT SYMBOLS AND
SUPPLEMENTARY EXPLANATION
1-1. Circuit Symbols
1-2. Precautions for Part Replacement
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 (L) Circuit Diagram
4-2-3. Front (R) Circuit Diagram
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
4-4-5. MSP Circuit Diagram
5. PC BOARDS
5-1. Front (L) PC Board
5-2. Front (R) PC Board
5-3. Front (Jack) 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. RAM Drive
1-1-5. Fan
1-1-6. 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) and 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 DVD-RAM
EU05 Mother PC board
EU01 Digital PC board
EU02 Power PC board
EU03A Front (R) PC board
EU03B Front (L) PC board
EU55 Jack PC board

SECTION 2
PART REPLACEMENT AND
ADJUSTMENT PROCEDURES
SECTION 2
PART REPLACEMENT AND
ADJUSTMENT PROCEDURES
CAUTIONS BEFORE STARTING PART REPLACEMENT
Electronic parts are susceptible to static electricity and may be 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. Cabinet Replacement
1-1-1. Top Cover
(1) Remove seven screws (1), and then remove the top cover (2).
Fig. 2-1-1
Screws (1)
Screws (1)
Screws (1)
Top cover (2)

1-1-2. Front Panel
(1) Remove the top cover. (Refer to item 1-1-1.)
(2) Disconnect the flexible cable (1).
(3) Disconnect the flexible cable (2) and two connectors (3).
(4) Remove two screws (4) and two ground wires (5) and (6).
(5) Remove the front panel (7).
Fig. 2-1-2
1-1-3. Tray Door
(1) Remove the front panel. (Refer to item 1-1-2.)
(2) Remove the Front (R) PC board. (Refer to item 1-2-4 (2) to (4).)
(3) Remove the spring (1).
(4) Remove the tray door (2) while slightly bending it.
Fig. 2-1-3
Screw (4)
Screw (4)
Connector (3)
Connector (3)
Claw
Claw
Claws
Front panel (7)
Ground wire (5)
Ground wire (6)
Flexible cable (1)
Flexible cable (2)
Tray door (2)
Spring (1)

1-1-4. RAM Drive
(1) Remove the top cover. (Refer to item 1-1-1.)
(2) Remove the front panel. (Refer to item 1-1-2.)
(3) Disconnect the flexible cable (1).
(4) Remove the piece of tape (2).
(5) Disconnect the connector (3).
(6) Remove two pieces of tape (4).
(7) Remove three screws (5), and then remove the acrylic board (6).
(8) Remove four screws (7), and then remove the RAM drive (8).
(Note)
After replacing, tape on three points of (2) and (4) as they were.
Fig. 2-1-4
Connector (3)
Screws (7)
Screws (5)
Tape (4)
Tape (2)
Acrylic board (6)
RAM drive (8)
Flexible cable (1)

1-1-5. Fan
(1) Remove the two pieces of tape (1).
(2) Cut off the binding band (2).
(3) Disconnect the connector (3).
(4) Remove four screws (4) and nuts (5) to remove the fan (6).
(Note)
• After replacing, tape on two points (1) as they were.
• Pass the wire (7) underneath the folded part of the acrylic board.
Fig. 2-1-5
1-1-6. Rear Panel
(1) Remove eight screws (1) and four screws (2).
(2) Remove the rear panel (3).
Fig. 2-1-6
Connector (3)
Screws (4)
Tape (1)
wire (7)
Pass the wire (7)
underneath the
folded porton
Binding band (2)
Tape (1)
Fan (6)
Wire (7)
Nuts (5)
Acrylic board
Screws (1)
Screws (1)
Screw (1)
Rear panel (3)
Screws (2)

1-2. PC Board Replacement
1-2-1. Digital PC Board
(1) Remove the front panel. (Refer item to 1-1-2.)
(2) Remove the RAM drive. (Refer item to 1-1-4.)
(3) Disconnect three connectors (1).
(4) Remove the screw (2) to remove the ground wire (3).
(5) Remove four screws (4), and then remove the digital PC board (5).
Fig. 2-1-7
Screws (4)
Screw (2)
Connector (1)
Connector (1)
Connector (1)
Digital PC board (5)
Ground wire (3)