Since the whole mechanism assembly unit is replaced, the DVD recorder mechanism of this unit
need not be adjusted.
This service manual is a service manual of a model in which destination added to the issued service
manual DR-MH300BE/EK, DR-MH300SE/EF/EK/ER, DR-ED400SE (issue number: YD089 2005/12).
This service manual consists of only "Parts List", "Schematic diagrams" and "Instruction Book".
Regarding service information other than these sections, refer to the service manual DR-MH300BE/EK,
DR-MH300SE/EF/EK/ER, DR-ED400SE (issue number: YD089 2005/12).
21-pin SCART connectors IN/OUT X 1, IN/DECODER X 1
S-video input Y:1.0 Vp-p,75 ohms
Video input 1.0 Vp-p, 75 ohms (pin jack)
Audio input 2 Vrms (pin jack)
Component video output Y : 1.0 Vp-p, 75 ohms
Digital audio output Coaxial
TUNER/TIMER
Tuning system Frequency synthesised tuner
Signal system PAL/SECAM colour signal, 625 lines/50 fields
TV channel storage capacity 99 positions (+AUX position)
Channel coverage VHF : 44 MHz - 89 MHz/
Memory backup time Approx. 10 minutes.
E.& O.E. Design and specifications subject to change without notice.
• 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, Inc.
• This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Use of this copyright
protection technology must be authorized by Macrovision. Reverse engineering or disassembly is prohibited.
• G-CODE is a registered trademark of Gemstar Development Corporation. The G-CODE system is manufactured under license from Gemstar Development Corporation.
• i-LINK is a trademark of Sony Corp .
Power off : 6.4 W
Storage : -20°C to 60°C
Weight 4.5 kg
(1.4 GB),DVD-RW 12 cm (4.7 GB),DVD-RW 8 cm (1.4 GB)
*1 9.4 GB double-sided discs
*2 2.8 GB double-sided discs
DVD-R : DVD Video format, DVD Video Recording format
DVD-RW : DVD Video format, DVD Video Recording format
(1) This design of this product contains special hardware and
many circuits and components specially for safety purposes. For continued protection, no changes should be made
to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to
those used in the original circuits. Services should be performed by qualified personnel only.
(2) Alterations of the design or circuitry of the product should
not be made. Any design alterations of the product should
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on
the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety characteristics as the recommended replacement parts shown in
the Parts List of Service Manual may create shock, fire, or
other hazards.
(4) The leads in the products are routed and dressed with ties,
clamps, tubings, barriers and the like to be separated from
live parts, high temperature parts, moving parts and/or
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed
that they have been returned to normal, after reassembling.
(5) Leakage shock hazard testing
After reassembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads,
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not
use a line isolation transformer during this check.
• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).
• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an
AC voltmeter having, 1,000Ω per volt or more sensitivity
in the following manner. Connect a 1,500Ω 10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-
posed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
0.15 F AC TYPE
Place this
probe on
1500 10W
Good earth ground
1.2Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that
these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant
safety standards.
(4) It is essential that safety critical components are replaced
by approved parts.
(5) If mains voltage selector is provided, check setting for local
voltage.
1.3Caution
Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of preforming repair of this system.
1.4Critical parts for safety
In regard with component parts appearing on the silk-screen
printed side (parts side) of the PWB diagrams, the parts that are
printed over with black such as the resistor ( ), diode ( )
and ICP ( ) or identified by the " " mark nearby are critical
for safety. When replacing them, be sure to use the parts of the
same type and rating as specified by the manufacturer.
(This regulation dose not Except the J and C version)
each exposed
metal part.
(No.YD090)1-3
1.5Important for laser products
!
1.CLASS 1 LASER PRODUCT
2.DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
4.CAUTION : The CD,MD and DVD player uses invisible
laser radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are defeated. It is
dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified here in may result in
hazardous radiation exposure.
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
REPRODUCTION AND POSITION OF LABEL
On mechaism assembly
The photograph might be
different from the actual thing.
OR
1-4 (No.YD090)
1.6Hard Disk Drive (HDD) Handling Precautions
The HDD is a precision device for use in reading and writing a large amount of data on or from a disk rotating at a high speed. If it is
not handled carefully, either abnormal operation may result or it may not be possible to read data. The HDD is sensitive to the following
items and special care is required in safeguarding against them when handling an HDD. Also take care in handling a set incorporating
an HDD.
(1) Vibrations and impacts
(2) Static electricity
(3) Rough handling
1.6.1 Handling in transport, etc.
• Be sure to place the HDD in the manufacturer's specified package carton before transport.
• When receiving a package containing an HDD, check that the
package carton is not damaged (such as having holes in the
carton, crushed corners, etc.).
• Do not impact the packaging carton when loading or unloading
HDD
Do not throw or
drop packages.
it.
• It is not permitted to use the inner package carton only for
transporting an HDD.
• Do not stack package cartons one upon another.
Be sure to package and
transport the HDDs correctly.
1.6.2 Handling an HDD in the stand-alone status
• When handling an HDD on a hard workbench, place an antistatic mat (rubber sheet) or similar object on the hard surface
(to prevent any impacts occurring between the HDD and
bench).
• Do not stack the HDDs one upon another.
• Do not knock an HDD with a hard object (such as a screwdriver).
• Do not place an HDD on its side panel without using a support
(do not place an HDD in an unstable position).
1.6.3 Handling the installation of an HDD
• Place antistatic mats or similar sheets on all of the surfaces on which work is conducted or when the HDD is transported.
• Do not permit the HDD to knock against the set's brackets.
• When screwing the brackets, be careful not to knock the HDD. When using a power screwdriver, use a low-shock model and arrange
the tightening torque properly.
• When mounting an HDD in a main body, take care not to apply excessive force to the brackets.
(No.YD090)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
SECTION 3
DISASSEMBLY
Please refer to "DR-MH300BE, DR-MH300BEK, DR-MH300SE, DR-MH300SEF,
DR-MH300SEK,DR-MH300SER, DR-ED400SE (issue number : YD089 2005/12)"
about this section.
SECTION 4
ADJUSTMENT
Please refer to "DR-MH300BE, DR-MH300BEK, DR-MH300SE, DR-MH300SEF,
DR-MH300SEK,DR-MH300SER, DR-ED400SE (issue number : YD089 2005/12)"
about this section.
SECTION 5
TROUBLESHOOTING
Please refer to "DR-MH300BE, DR-MH300BEK, DR-MH300SE, DR-MH300SEF,
DR-MH300SEK,DR-MH300SER, DR-ED400SE (issue number : YD089 2005/12)"
about this section.
1-6 (No.YD090)
(No.YD090)1-7
Victor Company of Japan, Limited
DIGITAL VIDEO STORAGE CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.YD090)
Printed in Japan
VPT
SCHEMATIC DIAGRAMS
HDD & DVD VIDEO RECORDER
DR-MH300SAA
CD-ROM No.SML200601
Area Suffix
AA ----------------- Australia
HDD DVD
STANDBY/ON
Since the whole mechanism assembly unit is replaced, the DVD recorder mechanism of this unit
need not be adjusted.
This service manual is a service manual of a model in which destination added to the issued service
manual DR-MH300BE/EK, DR-MH300SE/EF/EK/ER, DR-ED400SE (issue number: YD089 2005/12).
This service manual consists of only "Parts List", "Schematic diagrams" and "Instruction Book".
Regarding service information other than these sections, refer to the service manual DR-MH300BE/EK,
DR-MH300SE/EF/EK/ER, DR-ED400SE (issue number: YD089 2005/12).
RAM/RW
NAVIGATION
PROG
DR-MH300SAA [D5HR10]
PR
ENTER
PUSH-OPEN
PR
COPYRIGHT 2006 Victor Company of Japan, Limited
No.YD090SCH
2006/1
CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM
Safety precautions
The Components indentified by the symbolare
critical for safety. For continued safety, replace safety
critical components only with manufacturer's recommended parts.
1. Units of components on the schematic diagram
Unless otherwise specified.
1) All resistance values are in ohm. 1/6 W, 1/8 W (refer to
parts list).
Chip resistors are 1/16 W.
K: KΩ(1000Ω), M: MΩ (1000KΩ)
2) All capacitance values are in µF, (P: PF).
3) All inductance values are in µH, (m: mH).
4) All diodes are 1SS133, MA165 or 1N4148M (refer to parts
list).
Note: The Parts Number, value and rated voltage etc. in
the Schematic Diagram are for references only.
When replacing the parts, refer to the Parts List.
2. Indications of control voltage
AUX : Active at high.
AUX or AUX(L) : Active at low.
!
4. Voltage measurement
1) Regulator (DC/DC CONV) circuits
REC : Colour bar signal.
PB : Alignment tape (Colour bar).
—: Unmeasurable or unnecessary to measure.
2) Indication on schematic diagram
Voltage indications for REC and PB mode on the schematic diagram are as shown below.
REC mode
12 3
2.5
(5.0)
PB mode
1.8
PB and REC modes
(Voltage of PB and REC modes
are the same)
Note: If the voltages are not indicated on the schematic
diagram, refer to the voltage charts.
6. Indication of the parts for adjustments
The parts for the adjustments are surrounded with the circle
as shown below.
CIRCUIT BOARD NOTES
1. Foil and Component sides
1) Foil side (B side) :
Parts on the foil side seen from foil face (pattern face)
are indicated.
2) Component side (A side) :
Parts on the component side seen from component face
(parts face) indicated.
Parts location are indicated by guide scale on the circuit board.
2. Parts location guides
Parts location are indicated by guide scale on the circuit board.
LOCATION
IC
Category : IC
Horizontal “A” zone
Vertical “6” zone
(A : Component side)
D : Discrete component)
B : Foil side
C : Chip component
REF No.
IC101B C6 A
3. Interpreting Connector indications
1
2
Removable connector
3
1
2
Wire soldered directly on board
3
1
Non-removable Board connector
2
3
1
2
4
Board to Board
3
Connected pattern on board
The arrows indicate signal path
7. Indication of the parts not mounted on the circuit board
“OPEN” is indicated by the parts not mounted on the circuit
board.