Yamaha DRX-2 User manual

DRX-2
DRX-2
1
SERVICE MANUAL
DVD RECORDER
DRX-2
100878
■CONTENTS
TO SERVICE PERSONNEL ...................................... 2~4
PREVENTION OF ELECTRO STATIC DISCHARGE ... 4
LOCALE MANAGEMENT INFORMATION ................... 4
FRONT PANELS ............................................................ 5
REMOTE CONTROL PANEL ........................................ 5
REAR PANELS .............................................................. 6
SPECIFICATIONS...................................................... 6~8
DISASSEMBLY PROCEDURES ............................. 9~11
DIAGNOSTIC SOFTWARE ................................... 12~94
ALIGNMENTS ........................................................ 95~97
CIRCUIT DESCRIPTIONS ................................... 98~114
ABBREVIATION LIST ....................................... 115~118
IC DATA ............................................................. 119~126
BLOCK DIAGRAM ..................................................... 127
WIRING DIAGRAM .................................................... 128
WAVEFORMS .................................................... 129~130
PRINTED CIRCUIT BOARD .............................. 131~149
SCHEMATIC DIAGRAM .................................... 150~177
PARTS LIST ....................................................... 178~189
IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized
YAMAHA Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
P.O.Box 1, Hamamatsu, Japan

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WALL
OUTLET
EQUIPMENT
UNDER TEST
AC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and /or plastic
(where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency
(and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA-
SON WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose
eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.
■TO SERVICE PERSONNEL
1. Critical Components Information
Components having special characteristics are marked s
and must be replaced with parts having specifications equal
to those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
●Meter impedance should be equivalent to 1500 ohm shunted
by 0.15µF.
CAUTION
1001 (ANALOG P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 125mA, 250V FUSE.
1300 (ANALOG P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 2.5A, 250V FUSE.
1303 (ANALOG P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.0A, 250V FUSE.
1304 (ANALOG P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 4.0A, 250V FUSE.
1306 (ANALOG P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 125mA, 250V FUSE.
1307 (ANALOG P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.0A, 250V FUSE.
1308 (ANALOG P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 500mA, 250V FUSE.
1309 (ANALOG P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 800mA, 250V FUSE.
1505 (DIGITAL P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.0A, 125V FUSE.
1506 (DIGITAL P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.0A, 125V FUSE.
1507 (DIGITAL P.C.B.): FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.0A, 125V FUSE.
CAUTION
1001 (ANALOG P.C.B.): REPLACE WITH SAME TYPE 125mA, 250V FUSE.
1300 (ANALOG P.C.B.): REPLACE WITH SAME TYPE 2.5A, 250V FUSE.
1303 (ANALOG P.C.B.): REPLACE WITH SAME TYPE 1.0A, 250V FUSE.
1304 (ANALOG P.C.B.): REPLACE WITH SAME TYPE 4.0A, 250V FUSE.
1306 (ANALOG P.C.B.): REPLACE WITH SAME TYPE 125mA, 250V FUSE.
1307 (ANALOG P.C.B.): REPLACE WITH SAME TYPE 1.0A, 250V FUSE.
1308 (ANALOG P.C.B.): REPLACE WITH SAME TYPE 500mA, 250V FUSE.
1309 (ANALOG P.C.B.): REPLACE WITH SAME TYPE 800mA, 250V FUSE.
1505 (DIGITAL P.C.B.): REPLACE WITH SAME TYPE 1.0A, 125V FUSE.
1506 (DIGITAL P.C.B.): REPLACE WITH SAME TYPE 1.0A, 125V FUSE.
1507 (DIGITAL P.C.B.): REPLACE WITH SAME TYPE 1.0A, 125V FUSE.
ATTENTION
1001 (ANALOG P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 125mA, 250V.
1300 (ANALOG P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 2.5A, 250V.
1303 (ANALOG P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.0A, 250V.
1304 (ANALOG P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 4.0A, 250V.
1306 (ANALOG P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 125mA, 250V.
1307 (ANALOG P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.0A, 250V.
1308 (ANALOG P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 500mA, 250V.
1309 (ANALOG P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 800mA, 250V.
1505 (DIGITAL P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.0A, 125V.
1506 (DIGITAL P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.0A, 125V.
1507 (DIGITAL P.C.B.): UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.0A, 125V.
●Leakage current must not exceed 0.5mA.
●Be sure to test for leakage with the AC plug in both polarities.
THE DVD RECORDER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED
SERVICE PERSONNEL.

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3
CAUTION: Visible and invisible laserradiation
when open. Avoid exposure to beam.
CLASS 1
LASER PRODUCT
CAUTION: Visible and invisible laser radiation
when open. Avoid exposure to beam.
Laser Diode Properties
Type: InGaAIP Semiconductor laser (DVD)
AlGaAs Semiconductor laser (CD)
Wave length: 660 nm (DVD)
780 nm (CD)
Output Power: 20 mW (DVD writing)
(out of objective) 0.8 mW (DVD reading)
0.3mW (CD reading)
Beam divergence: 82 degrees (DVD)
54 degrees (CD)
VARO! : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄkymÄTTÖMÄLLE LASER-
SÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING! : OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
BETRAKTA EJ STRÅLEN.
WARNING
The use of optical instruments with this product will
increase eye hazard.
Repair handling should take place as much as possible
with a disc loaded inside the player.
WARNING LOCATION: Top of the DVDR Mechanism
WARNING: Laser Safety
This product contains a laser beam component. This component may emit invisible, as well as visible radiation, which may
cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be used during
servicing of the unit.
1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from
the laser pick-up unit at all times. Do not stare at the laser beam at any time.
2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual.
3) CAUTION: Use of controls, adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
Laser Emitting conditions:
1) When the Top Cover is removed and the "STANDBY/ON" SW is turned to the "ON" position, the laser component will emit
a beam for several seconds to detect if a disc is present. During this time (5 - 10 sec.) the laser may radiate through the
lens of the laser pick-up unit. Do not attempt any servicing during this period!
If no disc is detected, the laser will stop emitting the beam. When a disc is loaded, you will not be exposed to any laser
emissions.
2) The laser power level can be adjusted with the VR on the pick-up PWB. However, this level has been set by the factory prior to
shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this manual.
Adjustment of this control can increase the laser emission level from the device.

DRX-2
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4
1
2
4
2
5
5
4
2
6
3
5
■LOCALE MANAGEMENT INFORMATION
Locale Management Information : This DVD recorder is designed and manufactured to respond to the Locale Management
Information that is recorded on the DVDR disc. If the Locale number described on the DVDR disc does not correspond to the
Locale number of this DVD recorder, this DVD recorder cannot play this disc.
This product incorporates copyright protection
technology that is protected by method claims of
certain U.S. patents and other intellectual
property rights owned by Macrovision
Corporation and other rights owners. Use of this
copyright protection technology must be
authorized by Macrovision Corporation, and is
intended for home and other limited viewing uses
only unless otherwise authorized by Macrovision
Corporation. Reverse engineering or
disassembly is prohibited.
■PREVENTION OF ELECTRO STATIC DISCHARGE
The laser diode in the DVDR mechanism may be damaged due to static electricity from clothes or the human body. Use
caution to prevent electrostatic damage when servicing or handling the DVDR mechanism.
1. Grounding for electrostatic damage prevention
Some devices, such as the DVD recorder, use an optical pickup (laser diode) that will be damaged by static electricity in the
working environment. Only attempt service after ensuring that all grounding procedures have been completed.
1. Worktable grounding
Put a grounded conductive material (sheet) or iron sheet on the area where the optical pickup is placed.
2. Human body grounding
Use an anti-static wrist strap to discharge the static electricity from your body.
1M Conductive material
(sheet) or iron sheet
Anti-static wrist strap
2. Handling Precautions for DVDR mechanism
1. Handle the DVDR mechanism gently, as it is an extremely high-precision assembly.
2. The flexible cable lines may break if an excessive force is applied to it. Use caution when handling the cable.
3. The semi-fixed resistor for laser power adjustment should not be adjusted. Do not turn the resistor.
Warning for power supply
The primary side of the power supply carries live mains voltage when the player is connected to the mains even
when the player is switched off !
This primary area is not shielded so it is possible to touch copper tracks and/or components when servicing the player.
Service personnel have to take precautions to prevent touching this area or components in this area .
The primary side of the power supply has been indicated with a lightening stroke and a stripe-marked print on the printed
wiring board
Note:
The screws on the DVDR mechanism may never be touched, removed or re-adjusted.
Handle the DVDR mechanism with care when the unit has to be exchanged!
The DVDR mechanism is very sensitive for dropping or giving shocks.

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■FRONT PANELS
■REMOTE CONTROL PANEL
A model
G model
NATURAL SOUND DVD RECORDER DRX-2
U model
S VIDEO VIDEO
CAM 1 CAM 2
L AUDIO R DV IN

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6
■REAR PANELS
U model
A model
■SPECIFICATIONS
DISC FORMATS SUPPORTED
Disc type Playback Recording
DVD+RW ••
DVD+R ••
DVD-RW (Video mode) •—
DVD-R •—
DVD-Video •—
SVCD •—
Video CD •—
Audio CD •—
CD-R •—
CD-RW •—
RECORDABLE DISC FORMATS
Medium DVD+RW: Phase-Change ReWritable
DVD+R: dye-based
Diameter 12 cm
Capacity (single side) 4.7 Gbyte
Recording time M1 60’9.72 Mbit/s
M2 120’5.07 Mbit/s
M2x 150’4.06 Mbit/s
M3 180’3.38 Mbit/s
M4 240’2.54 Mbit/s
M6 360' 1.69 Mbit/s
Apparatus Claims of U.S. Patent Nos.
4.631.603, 4.577.216, 4.819.098, 4.907.093
6.466.734, 6.430.359, 6.091.882,
6.049.652, 5.335.079, 5.307.173
licensed for limited viewing uses only.
G model

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TV Standard PAL NTSC
Scan Frequency 50Hz 60Hz
Number of Lines 625 525
Playback ••
Recording ••
Internal Tuner •–
VIDEO RESOLUTION 50Hz 60Hz
DVD-Video/DVD+RW/DVD+R(M1/M2/M2x)
•Horiz. Resolution 720 pixels1720 pixels1
•Vertical Resolution 576 lines 480 lines
DVD+RW_DVD+R(M3/M4/M6)
•Horiz. Resolution 360 pixels2360 pixels2
•Vertical Resolution 576 lines 480 lines
VCD
•Horiz. Resolution 352 pixels 352 pixels
•Vertical Resolution 288 lines 288 lines
1equivalent to 500 lines on your TV
2equivalent to 250 lines on your TV
VIDEO PERFORMANCE
DA Converter 10-bit
AD Converter 9-bit
Signal Handling Components
Video Output 1 Vpp into 75 ohms
S-video Output Y: 1 Vpp into 75 ohms
C: 0.286 Vpp into 75 ohms (U, A models)
C: 0.300 Vpp into 75 ohms (G model)
Component Output Y: 1Vpp into 75 ohms (U, A models)
Pb: 0.7 Vpp into 75 ohms (U, A models)
Pr: 0.7 Vpp into 75 ohms (U, A models)
RGB Output 0.7 Vpp into 75 ohms (G model)
AUDIO FORMAT
Compressed Digital Playback Recording
•Dolby Digital Multi-channel 2-channel
(AC-3) 16 bit, fs 48 kHz
•DTS Multi-channel —
•MPEG1 2-channel —
SPdif
•PCM 2-channel 2-channel
16, 20, 24 bit 16 bit, fs 48 kHz
fs 48 kHz
AUDIO PERFORMANCE
DA Converter 24-bit
AD Converter 16-bit
DVD fs 96 kHz 4 Hz - 44 kHz
fs 48 kHz 4 Hz - 22 kHz
Video CD fs 44.1 kHz 4 Hz - 20 kHz
Audio CD fs 44.1 kHz 4 Hz - 20 kHz
FRONT CONNECTIONS
i.LINK DV IEEE 1394 4-pin
S-video Input Hosiden 4-pin
Video Input Cinch (yellow)
Audio Left/Right Input Cinch (white/red)
REAR CONNECTIONS
Component Video Input Cinch (green/blue/red)
Component Video Output Cinch (green/blue/red)
S-video Input Hosiden 4-pin (U, A models)
S-video Output Hosiden 4-pin
Video Input Cinch (yellow) (U, A model)
Video Output Cinch (yellow)
scart 1 CVBS, S-video/RGB-out, Decoder (G model)
scart 2 CVBS, S-video/RGB-in, Decoder (G model)
Audio L/R Input Cinch (white/red) (U, A models)
Audio L/R Output Cinch (white/red)
Digital Audio Output 1 coaxial, 1 optical
IEC958 for CDDA / LPCM
IEC1937 for MPEG2, Dolby Digital (U, A models)
IEC1937, Dolby Digital, DTS (G model)
RF Antenna Input Coaxial 75 ohms
RF TV Output Coaxial 75 ohms
Power Standard (IEC type)
POWER SUPPLY
Power Supply
U model 120V, 60Hz
A, G models 220 - 240V, 50 Hz
Power Consumption Operation 27 W
Low-power standby 3 W
CABINET
Dimensions (WxHxD) 435 x 82 x 347 mm (17-1/8" x 3-1/4" x 13-11/16")
Net Weight 4.0 kg (8 lbs. 13 oz.)
OPERATING ENVIRONMENT
Operating Position maximum 10 degree inclination in all directions
Ambient Temperature 15 –35 °C (59 –95 °F)
Humidity 25 –75 %
ACCESSORIES
- Remote Control x 1
- Battery x 2
- Power Cable x 1
- SCART Cable x 1 (G model)
- Audio Pin Cable (2P) x 1 (U, A models)
- Video Cable (1P) x 1 (U, A models)
- RF Cable for NAFTA x 1 (U model)
- RF Cable for PAL x 1 (A, G models)
- Pin Cable (3P) x 1 (U, A models)
- DVD+RW Disc x 1 (U, A models)
* Specifications are subject to change without notice due
to product improvements.
U ........ U.S.A. model A ........ Australian model
G ........ European model

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Simple programming system for DVD
recorders. Simply enter the number
code associated with your television
program. This number is located in your
television listings magazine.
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”and the double-D symbol are trademarks
of Dolby Laboratories. Confidential Unpublished Works.
©1992 1997 Dolby Laboratories,Inc. All rights reserved.
“DTS”and “DTS Digital Out”are trademarks of Digital Theater
Systems, Inc.
This product incorporates copyright protection technology
that is protected by method claims of certain U.S.patents and
other intellectual property rights owned by Macrovision
Corporation and other rights owners.
Use of this copyright protection technology must be
authorized by Macrovision Corporation, and is intended for
home and other limited viewing uses only unless otherwise
authorized by Macrovision Corporation. Reverse engineering
or dis-assembly is prohibited.

DRX-2
DRX-2
9
See exploded view for item numbers
mounting
demounting
2.2 mm
T8
2.7 mm
T10
When disassembling, use the special screw driver with
tip shape in figure.
Front Panel Unit
⇒ Open the tray and remove the
tray lid 70
⇒ Remove 3 screws 201
(front panel unit → frame)
⇒ Unlock the front panel unit
from the frame by releasing 2
snaps on left and right
⇒ Remove 8 screws 205 to
remove the plate front
Analog Board 1001
⇒ Remove the connections
⇒ Remove 2 screws 201
and 7 (U, A models) or 3
(G model) screws 202
(board → rear panel)
⇒ Remove 3 screws 201
and screw 200
(board → frame)
⇒ Remove screw safety
holder 145
⇒ Demount the board
DVDR MECHANISM 1007
⇒ Remove the connections
⇒ Open the tray and remove the tray lid 70
⇒ Remove 4 screws 202
(DVDR Mechanism 1007 → support
bracket)
⇒ Demount the DVDR Mechanism
Manual opening of tray and removal of
tray lid 70
In case the loader is defective and cannot
be opened electrically, you can open the
tray as follows:
⇒ It is possible to unlock the tray by means
of a screwdriver via a slot in the front and
frame at the underside.
Push the white pin of the slider at the
underside of the DVDR Mechanism to the
right (seen from the front)
⇒ Open the unlocked tray.
IOE Board 1005
⇒ Remove 2 screws 202 and screw 201
(IOE board → rear panel)
⇒ Demount the board
Digital Board 1002
⇒ Remove the connections
⇒ Remove 4 screws 201
(Digital board → frame)
⇒ Demount the board
Display Board 1004
⇒ Remove 2 screws 205
(board → front panel ass'y 1)
⇒ Remove 2 screws 209 of DV
input cable
⇒ Demount the board
Cover 300
⇒ Remove 9 screws 200
⇒ Lift the cover to remove
FrFront Pont PanelanelFront Panel
■DISASSEMBLY PROCEDURES

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●Dismantling and Assembly of the Set
For item numbers please see the exploded views.
1. Front
a. After removing the top cover, remove tray lid 70. (Fig. 1)
b. Remove the 3 screws 201. (Fig. 2)
c. Release the 2 snap hooks on the sides and remove the
front panel unit. (Fig. 2)
d. Remove the 8 screws 205 to remove the front plate.
(Fig. 3 and 4)
1
Fig. 1
222
33
4
Fig. 2
5
Fig. 3
6
Fig. 4
2. Digital Board
a. Remove the 4 screws 201. (Fig. 5)
b. Turn the PCB in the service position. (Fig. 6)
11
1
1
Fig. 5
2
Fig. 6