Toshiba D-R4SU User manual

DVD VIDEO RECORDER
SERVICE MANUAL
Mar., 2005
S
FILE NO. 810-200531
D-R4SU
D-R4SC
D-KR4SU
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 SI 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 .
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.
·Manufactured under license from Dolby Laboratories. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories.
·“DTS” and “DTS Digital Out” are trademarks of Digital Theater Systems, nc.
·Manufactured under license from QSound Labs, nc. U.S. patent Nos. 5,105,462, 5,208,860 and 5,440,638 and various foreign counterpart. Copyright
QSound Labs, nc. 1998-2002. QXpanderTM is a trademark of QSound Labs, nc. All rights reserved.

SAFETY NOTICE
SAFETY PRECAUTIONS
LEAKAGE CURRENT CHECK
Plug the AC line cord directly into a 12 V AC outlet (do
not use an isolation transformer for this check). Use an
AC voltmeter, having 5 W per volt or more sensitivity.
Connect a 15 W 1 W resistor, paralleled by a .15 mF
15 V 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 15 W resistor.
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 .3 V. A reading
exceeding .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 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 eakage Current Check

SECTION 2
PART REPLACEMENT AND ADJUSTMENT PROCEDURES
SECTION 3
SERVICING DIAGRAMS
1. CIRCUIT SYMBOLS AND
SUPPLEMENTARY EXPLANATION
1-1. Precau ions for Par Replacemen
1-2. Solid Resis or Indica ion
1-3. Capaci ance Indica ion
1-4. Induc or Indica ion
1-5. Waveform and Vol age Measuremen
1-6. O hers
2. PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM
3. BLOCK DIAGRAMS
3-1. Overall Block Diagram
4. CIRCUIT DIAGRAMS
4-1. Power Supply Circui Diagram
4-2. Fron Circui Diagram
4-2-1. Fron Jack Circui Diagram
4-2-2. Fron (LED) Circui Diagram
4-2-2. Fron (L) Circui Diagram
4-2-3. Fron (R) Circui Diagram
4-3. Digi al Circui Diagram
4-3-1. Digi al 1 Circui Diagram
4-4. Mo her Circui Diagram
4-4-1. Tuner Circui Diagram
4-4-2. Timer Circui Diagram
4-4-3. Audio Circui Diagram
4-4-4. Video Circui Diagram
4-3. Tuner Uni Circui Diagram
5. PC BOARDS
5-1. Fron Jack PC Board
5-2. Fron (LED) PC Board
5-3. Fron (L) PC Board
5-4. Fron (R) PC Board
5-5. Tuner Uni PC Board
5-6. Digi al PC Board
5-7. Mo her PC Board
CONTENTS
SECTION 1
GENERAL DESCRIPTIONS
1. OPERATING INSTRUCTIONS
1. REPLACEMENT OF MECHANICAL PARTS
1-1. Cabine Replacemen
1-1-1. Top Cover
1-1-2. Fron Panel
1-1-3. RAM Diver
1-1-4. Rear Panel
1-1-5. Fan
1-2. PC Board Replacemen
1-2-1. Tuner Uni PC Board
1-2-2. Digi al PC Board
1-2-3. Mo her PC Board
1-2-4. Power PC Board
1-2-5. Fron (R), Fron (L), Fron (LED), and
Fron Jack PC Board
2. WIRING CONNECTION DIAGRAM
2. LOCATION OF MAIN PARTS
2-1. Loca ion of Main Par s
2-2. Loca ion of PC Boards
SECTION 4
PARTS LIST
SAFETY PRECAUTION
NOTICE
ABBREVIATIONS
1. EXPLODED VIEWS
1-1. Packing Assembly
1-2. Chassis Assembly
2. 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
EU05A Tuner Unit PC board
EU01 Digital PC board
EU02 Power PC board
EU03A Front (R) PC board
EU55 Front Jack PC board
EU03B Front (L)
PC board
EU56 Front (LED)
PC board

1-1. Cabinet Replacement
1-1-1. Top Cover
1. Remove five screws (1), then remove the top cover (2).
Fig. 2-1-1
SECTION 2
PART REPLACEMENT AND
ADJUSTMENT PROCEDURES
Screws (1)
Screw (1)
Screw (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.
any 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. Disconnect three connectors (1).
3. Remove one screw (2) and the earth lead.
4. Remove two screws (3) and four claws, then remove the front panel (4).
Fig. 2-1-2
1-1-3. RAM Dr ve
1. Remove the front panel. (Refer to item 1-1-2.)
2. Disconnect the flexible cable (1) and connector (2).
3. Remove three screws (3) and the screw (4), then remove the RA drive (5).
4. Remove the shield cover (6).
Note:
• After replacing, attach the tape (1) to its original position.
Fig. 2-1-3
Connector (1) Connector (1)
Connector (1)
Screws (3)
Screws (2)
Earth
Front panel (4)
Claw
Claw
Claws
Flexible
cable (1)
Connector (2)
Screws (3)
Screw (4)
RAM drive (5)
Shield cover (6)

1-1-4. Rear Panel
1. Remove the top cover. (Refer to item 1-1-1.)
2. Remove the screw (1) and seven screws (2).
3. Remove the bush from the rear panel (3).
4. Remove two claws, then remove the rear panel (3).
5. Remove two screws (4), then remove the fan (5).
Fig. 2-1-4
1-1-5. Fan
1. Remove the top cover. (Refer to item 1-1-1.)
2. Peel off the tape (1).
3. Disconnnect two connectors (2).
4. Remove two screws (3), then remove the fan (4).
Fig. 2-1-5
Screw (1)
Screws (2)
Screws (4)
Fan (5)
Rear panel (3)
Claw
Claw
Bush
Screws (3)
Connectors (2)
Fan (4)
Tape (1)
Hexagonal
nuts

1-2. PC Board Replacement
1-2-1. Tuner Un t PC Board
1. Remove the top cover. (Refer to item 1-1-1.)
2. Disconnect the flexible cable (1).
3. Remove the screw (2) and the screw (3).
4. Remove the claw, then remove the Tuner Unit PC board (4).
Screw (2)
Tuner Unit
PC board (4)
Screw (3)
Claw
Flexible
cable (1)
1-2-2. D g tal PC Board
1. Remove the top cover. (Refer to item 1-1-1.)
2. Peel off the tape (1).
2. Disconnect the flexible cable (2).
3. Remove four screws (3), then remove the Digital PC board (4).
Note:
• The Digital PC board (4) is connected to the other PC board (5) by three connectors (6). Take notice when removing.
Fig. 2-1-7
Fig. 2-1-6
Screws (3)
Digital PC
board (4)
Flexible
cable (2)
Tape (1)
Flexible
cable (2)
Connector
Claw
Connector (6) Connectors (6)
Mother PC board (5)
Remove the connector claw
in the direction indicated
by the arrows to release the
flexible cable.

1-2-3. Mother PC Board
1. Remove the rear panel. (Refer to item 1-1-4.)
2. Remove the Tuner Unit PC board. (Refer to item 1-2-1.)
3. Remove the Digital PC board. (Refer to item 1-2-2.)
4. Disconnect three connectors (1).
5. Remove five screws (2) and the screw (3).
6. Pull out the other PC board (4) toward the rear side (indicated by the arrow).
Fig. 2-1-8
Screws (2)
Screw (3) Mother PC
board (4)
Connectors (1)
Connector (1)

1-2-4. Power PC Board
1. Remove the top cover. (Refer to item 1-1-1.)
2. Peel off the tape (1).
3. Disconnect four connectors (2).
4. Remove four screws (3), then remove the Power PC board (4).
Fig. 2-1-9
Connectors (2)
Connectors (2)
Tape (1) Connectors (2)
Power
PC board (4)
Screws (3)

1-2-5. Front (R), Front (L), Front (LED) and Front Jack PC Boards
1. Remove the front panel. (Refer to item 1-1-2.)
2. Peel off two tapes (1).
3. Remove four screws (2), then remove the stay (3).
4. Remove four screws (4) and two screws (5), then remove the Front (R) PC board (6) and Front (LED) PC board (7).
5. Remove two screws (8), then remove the Front Jack PC board (9).
6. Remove four screws (10), then remove the Front (L) PC board (11).
Note:
• After replacing, attach the tape (1) to its original position.
Fig. 2-1-10
Screws (2)
Screws (8)
Screws (4)
Screws (5)
Screws (10)
Front (LED)
PC Board (7)
Stay (3)
Front (L) PC board (11)
Front (R) PC board (6)
Tapes (1)
Front Jack
PC board (9)
Front panel
Stay Front (L) PC boardTray doorWire
Front (R) PC board Front Jack
PC board
Fasten with the tape.
Front (LED)
PC board
Note:
• Fasten with the tape, taking care so that the wire does not hang over the tray door.
Fig. 2-1-11

: Flexible cable
: Tape
Front panel
RAM Drive
Tuner Unit
PC board
WB01
W701
W801
Power PC board
Mother PC board
Digital PC board
W051
Fan
W101
W104
W102
2. WIRING CONNECTION DIAGRAM
After the servicing is complete, return the wiring to its original state by using the diagram below as a reference.
Fig. 2-2-1

SECTION 4
PARTS LIST
SAFETY PRECAUTION
The parts identified by ! ( ) mark are critical for safety. Replace only with part number specified.
The mounting position of replacement is to be identical with originals.
The substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create
shock, fire or other hazards.
NOTICE
The part number must be used when ordering parts in order to assist in processing, be sure to include the model number
and description.
ABBREVIATIONS
• Integrated Circuit (IC)
• Capacitor (Cap)
• Capacitance Tolerance (for Nominal Capacitance more than 10pF)
P
100
0
Symbol
Tolerance %
B
± 0.1
C
± 0.25
D
± 0.5
F
± 1
G
± 2 ± 5
K
± 10
M
± 20
N
± 30
V
20
– 10
W
100
– 10
U
75
– 10
Q
30
– 10
T
50
– 10
Symbol
Tolerance %
X
40
– 20
Y
150
– 10
Z
80
– 20
Ex. 10µF J = 10µF ± 5%
Symbol
Tolerance pF
B
± 0.1
C
± 0.25
D
± 0.5
F
± 1
G
± 2
Ex. 10pF G = 10pF ± 2pF
M
± 20
Symbol
Tolerance %
B
± 0.1
C
± 0.25
D
± 0.5
F
± 1
G
± 2 ± 5
K
± 10
Ex. 470WJ = 470W± 5%
Table 4-2-1
Table 4-2-2
Table 4-3-1
• Capacitance Tolerance (for Nominal Capacitance 10pF or less)
• Resistor (Res)
• Resistance tolerance
SECTION 4
PARTS LIST

1. EXPLODED VIEWS
1-1. Packing Assembly
Fig. 4-4-1
ZF35
Note: The shape of the packing
 material is sometimes different.
ZF01
ZF10
ZF11
ZF12
(D-R4SU/KR4SU)
ZF13

1-2. Chassis Assembly
Fig. 4-4-2
RAM1
ZG45
P801
EU02
EU05
ZG20
W051
WB01
EU01
EU55
EU56
ZG01
EU05A
EU03B
EU03A

Location
No. Part No. Description
- MECHANICAL PARTS -
！P801 P000416780 Cord,Power UL
！RAM1 P000438600 DVD-RAM DAV-WR412(RAM-R650)
W051 P000433820 Cable,Flexible FFC,40P,L280
WB01 P000439330 Cable,Flexible FFC,11P,L90
ZF01 P000438630 Remote Control Unit SE-R0176
！
ZF10 P000416410 Owners Manual,OP English,D-R4SU/SC/KR4SU
！
ZF11 P000416400 Owners Manual,ST English,D-R4SU/SC/KR4SU
！
ZF12 P000416430 Owners Manual,Quick Spanish,D-R4SU/KR4SU
！
ZF13 P000416420 Owners Manual,Quick English,D-R4SU/SC/KR4SU
！ZF10 P000416450 Owners Manual,OP French,D-R4SC
！ZF11 P000416440 Owners Manual,ST French,D-R4SC
ZF35 P000416800 IR Blaster RWS1000-0062E
ZG01 P000438710 Panel Assy,Front D-R4SU/R4SC
ZG01 P000440030 Panel Assy,Front D-KR4SU
ZG20 P000438610 Cover,Top
ZG45 P000401260 Fan,DC 5025LL12SND2
2. PARTS LIST

Location
No. Part No. Description
- ELECTRICAL PARTS -
EU01 P000439050 PC Board Assy Digital,D-R4SU/KR4SU
EU01 P000439340 PC Board Assy Digital,D-R4SC
- INTEGRATED CIRCUITS -
IC202 P000378050 IC SN74AHC1G04HDCKR
IC203 P000378050 IC SN74AHC1G04HDCKR
IC302 P000416750 IC BA25BC0FP
IC303 P000440410 IC MM1573DNRE
IC304 P000391240 IC NJM2125F
IC306 P000378040 IC SN74AHC1G08HDCKR
IC307 79040306 IC PST594JMT
IC315 P000377920 IC SN74LV244APWR
- TRANSISTORS -
Q301 79050018 Transistor,Chip 2SA1162-Y
Q302 79050018 Transistor,Chip 2SA1162-Y
Q303 79050018 Transistor,Chip 2SA1162-Y
Q304 79050018 Transistor,Chip 2SA1162-Y
Q305 79050018 Transistor,Chip 2SA1162-Y
Q306 79050016 Transistor,Chip 2SC2712-Y
Q307 79050016 Transistor,Chip 2SC2712-Y
Q308 79050018 Transistor,Chip 2SA1162-Y
Q309 79050018 Transistor,Chip 2SA1162-Y
- MISCELLANEOUS -
X201 P000440380 Oscillator,Crystal
X302 79089168 Oscillator,Crystal
X303 P000377990 Oscillator,Crystal 27.0M
！EU02 P000438620 PC Board Assy Power
EU03A P000438660 PC Board Assy Front(R)
- INTEGRATED CIRCUITS -
IC101 P000416700 IC PT6315
- DIODES -
D101 79060019 Diode,Chip 1SS355
- MISCELLANEOUS -
DS101 P000440490 Display,FL VFD20-0812FN
MT101 P000440420 Module,IR GP1UM261XK0F
S107 P000377940 Switch,Push-Lever
EU03B P000438670 PC Board Assy Front(L)
- MISCELLANEOUS -
S101 P000391050 Switch,Tact
S102 P000391050 Switch,Tact
S103 P000391050 Switch,Tact
S104 P000391050 Switch,Tact
S105 P000391050 Switch,Tact
S106 P000391050 Switch,Tact
S108 P000391050 Switch,Tact
S109 P000391050 Switch,Tact
S110 P000391050 Switch,Tact
S112 P000391050 Switch,Tact
EU05 P000438650 PC Board Assy Mother
- INTEGRATED CIRCUITS -
IC701 P000391180 IC PST3222NR
IC702 P000391150 IC DC74HCT125M
IC901 P000440480 IC PCM1755DBQR
IC902 P000440510 IC RC4580IDR
IC903 P000416650 IC,Terminal,OPT LAF1001-0301F
IC906 79040397 IC MM1575ANRE

Location
No. Part No. Description
ICB10 P000440500 IC XC6209F502PR
ICW01 P000391260 IC MM1568DJBEG
ICX03 79040382 IC MM1140XFFE
ICX04 79040369 IC MM1113XFBE
ICX05 P000440500 IC XC6209F502PR
ICX31 79040371 IC BA7046F
ICX32 P000363370 IC NJM2330MV
- TRANSISTORS -
Q901 79050014 Transistor,Chip HN1C03F
Q902 79050014 Transistor,Chip HN1C03F
Q904 79050001 Transistor,Chip RN2402
Q905 79050100 Transistor,Chip RN1402
Q906 79050001 Transistor,Chip RN2402
Q907 79050100 Transistor,Chip RN1402
Q908 79050100 Transistor,Chip RN1402
QB08 79050016 Transistor,Chip 2SC2712-Y
QW02 79050100 Transistor,Chip RN1402
QW03 79050018 Transistor,Chip 2SA1162-Y
QW04 79050018 Transistor,Chip 2SA1162-Y
QX06 79050018 Transistor,Chip 2SA1162-Y
QX09 79050018 Transistor,Chip 2SA1162-Y
QX31 79050016 Transistor,Chip 2SC2712-Y
QX32 79050100 Transistor,Chip RN1402
QX33 P000440390 Transistor,Chip RN1404
- DIODES -
D702 79060028 Diode,Chip 1SS226
D901 79060019 Diode,Chip 1SS355
D902 79060019 Diode,Chip 1SS355
- MISCELLANEOUS -
J901 P000440440 Jack,RCA MSD-244V-09
JW01 P000440450 Jack,RCA MSP-801V1-02-01-B
JW02 P000440460 Jack,RCA MSD-243V-18
JX01 P000440470 Jack,RCA MSP-830V-07
X700 P000391040 Oscillator,Crystal 12.5MHz
X701 P000363400 Oscillator,Crystal 32.768kHz
EU05A P000438680 PC Board Assy Tuner
- MISCELLANEOUS -
！MB01 P000440520 Tuner 115-V-JA45AT
EU55 P000438690 PC Board Assy Front Jack
- MISCELLANEOUS -
J170 P000387300 Jack,DV
J171 P000402780 Jack,3P+1Y/C
EU56 P000438700 PC Board Assy Front(LED)
- DIODES -
D110 P000440400 Diode,LED SLR343BBT3F
D111 P000440400 Diode,LED SLR343BBT3F