Sony HCD-DZ7260 User manual

SERVICE MANUAL
Sony Corporation
Audio Business Group
Published by Sony Techno Create Corporation
HCD-DZ260/DZ270/HDZ278
SPECIFICATIONS
DVD RECEIVER
9-887-958-01
2008A04-1
© 2008.01
US Model
Canadian Model
HCD-HDZ278
AEP Model
UK Model
HCD-DZ260
E Model
Australian Model
HCD-DZ270
Ver. 1.0 2008.01
Model Name Using Similar Mechanism HCD-DZ230/DZ231/HDZ235
Mechanism Type CDM85-DVBU102
Optical Pick-up Name KHM-313CAA
• HCD-DZ260/DZ270/HDZ278 are the amplifier, DVD/CD and
tuner section in DAV-DZ260/DZ270/HDZ278.
Photo : HCD-DZ270
This system incorporates with Dolby* Digital and Dolby Pro
Logic (II) adaptive matrix surround decoder and the DTS** Digital
Surround System.
* Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”, and the double-D symbol are trademarks
of Dolby Laboratories.
** Manufactured under license from DTS, Inc.
“DTS” and “DTS Digital Surround” are registered trademarks
of DTS, Inc.
AUDIO POWER SPECIFICATIONS
for the US model (HDZ278)
POWER OUTPUTAND TOTAL HARMONIC
DISTORTION:
With 3 ohms loads, both
channels driven, from 180
- 20,000 Hz; rated 84 watts
per channel minimum
RMS power, with no more
than 0.7% total harmonic
distortion from 250 milli
watts to rated output.
Amplifier Section
US models:
Surround mode (reference) RMS output power
FL/FR/C/SL/SR*: 142
watts (per channel at 3
ohms, 1 kHz, 10% THD)
Subwoofer*: 140 watts (at
3 ohms, 80 Hz, 10% THD)
Chinese models:
Surround mode (reference) RMS output power
FL/FR/C/SL/SR*: 100
watts (per channel at 3
ohms, 1 kHz)
Subwoofer*: 100 watts (at
3 ohms, 80 Hz)
Other models:
Stereo mode (rated) 108 W + 108 W (at 3 ohms,
1 kHz, 1% THD)
Surround mode (reference) RMS output power
FL/FR/C/SL/SR*: 142
watts (per channel at 3
ohms, 1 kHz, 10% THD)
Subwoofer*: 140 watts (at
3 ohms, 80 Hz, 10% THD)
* Depending on the decoding mode settings and the
source, there may be no sound output.
Inputs (Analog) (DZ260)
TV (AUDIO IN) Sensitivity: 450/250 mV
AUDIO IN Sensitivity: 250/125 mV
Inputs (Digital) (DZ260)
TV (COAXIAL IN/OPTICAL IN)
Impedance: 75 ohms/-
Inputs (Analog) (DZ270/HDZ278)
TV/VIDEO (AUDIO IN) Sensitivity: 450/250 mV
AUDIO IN Sensitivity: 250/125 mV
Inputs (Digital) (HDZ278)
TV/VIDEO (COAXIAL IN/OPTICAL IN)
Impedance: 75 ohms/-
Outputs (Analog)
Phones Accepts low- and high-
impedance headphones.
Super Audio CD/DVD System
Laser Semiconductor laser
(Super Audio CD/DVD: λ
= 650 nm)
(CD: λ= 790 nm)
Emission duration:
continuous
Signal format system
North American, Mexican, and Latin American models:
NTSC
Other models: NTSC/PAL
USB Section (DZ260/DZ270)
Supported bit rate
MP3 (MPEG 1 Audio Layer-3):
32 kbps - 320 kbps
WMA: 48 kbps - 192 kbps
AAC: 48 kbps - 320 kbps
Sampling frequencies
MP3 (MPEG 1 Audio Layer-3):
32/44.1/48 kHz
WMA: 44.1 kHz
AAC: 44.1 kHz
(USB) port:
Maximum current: 500 mA
Tuner Section
System PLL quartz-locked digital
synthesizer
FM tuner section
Tuning range
North American models: 87.5 MHz - 108.0 MHz
(100 kHz step)
Other models: 87.5 MHz - 108.0 MHz (50
kHz step)
– Continued on next page –
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
2
SAFETY-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COM- POSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
Antenna (aerial) FM wire antenna (aerial)
Antenna (aerial) terminals 75 ohms, unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
North American, Mexican, and Latin American models:
530 kHz - 1,710 kHz (with
the interval set at 10 kHz)
531 kHz - 1,710 kHz (with
the interval set at 9 kHz)
European, Russian, and Middle Eastern models:
531 kHz - 1,602 kHz (with
the interval set at 9 kHz)
Australian and New Zealand models:
531 kHz - 1,710 kHz (with
the interval set at 9 kHz)
530 kHz - 1,710 kHz (with
the interval set at 10 kHz)
Other models: 531 kHz - 1,602 kHz (with
the interval set at 9 kHz)
530 kHz - 1,610 kHz (with
the interval set at 10 kHz)
Antenna (aerial) AM loop antenna (aerial)
Intermediate frequency 450 kHz
Video Section (DZ260)
Outputs R/G/B: 0.7 Vp-p 75 ohms
HDMI OUT: Type A (19 pin)
Video Section (DZ270/HDZ278)
Outputs VIDEO: 1 Vp-p 75 ohms
COMPONENT:
Y: 1 Vp-p 75 ohms
P
B/CB, PR/CR: 0.7 Vp-p
75 ohms
HDMI OUT: Type A (19 pin)
General
Power requirements
North American models: 120 VAC, 60 Hz
Mexican models: 120 VAC, 60 Hz
Argentine models: 20 V - 240 VAC, 50/60 Hz
Latin American models: 110 V - 240 V AC, 50/60 Hz
Other models: 220 V - 240 VAC, 50/60 Hz
Power consumption
HDZ278: On: 155 W
Standby: 0.3 W (at the
Power Saving mode)
DZ260/DZ270: On: 160 W
Standby: 0.3 W (at the
Power Saving mode)
Output voltage (DIGITAL MEDIA PORT)
(DZ260/HDZ278 only) DC 5 V
Output current (DIGITAL MEDIA PORT)
(DZ260/HDZ278 only) 700 mA
Dimensions (approx.) 430 mm ×66 mm ×385 mm
(17 in ×2 5/8 in ×15 1/4 in)
(w/h/d) incl. projecting parts
Mass (approx.) 4.2 kg (9 lb 5 oz)
Design and specifications are subject to change without
notice.
Special Component Notice
The components identified by mark 9contain confidential infor-
mation.
Strictly follow the instructions whenever the components are re-
paired and/or replaced.
Notice pour composants spéciaux
Les composants identifiés par la marque 9contiennent des infor-
mations confidentielles.
Suivre scrupuleusement les instructions chaque fois qu’un com-
posant est remplacé et / ou réparé.
• Abbreviation
AR : Argentina model
AUS : Australian model
CND : Canadian model
E3 : 240 V AC Area in E model
E12 : 220-240 V AC area in E model
E15 : Iran model
MX : Mexican model
Model Part No.
AEP, UK models 3-273-759-0[]
US model 3-273-759-1[]
CND model 3-273-759-2[]
E3 model 3-273-760-0[]
MX model 3-273-760-2[]
E12 model 3-273-760-4[]
AUS model 3-273-760-5[]
AR model 3-273-760-6[]
E15 model 3-273-760-9[]
MODEL IDENTIFICATION
– Back Panel –
Parts No.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
3
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270 °C during
repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operatedAC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 VAC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 kΩ0.15 μFAC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Laser component in this product is capable of emitting radiation exceed-
ing the limit for Class 1.
This appliance is classified as a
CLASS 1 LASER product.
This marking is located on the
rear or bottom exterior.
CAUTION
Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
4
5GB
Playable Discs
1)MP3 (MPEG1 Audio Layer 3) is a standard format defined by ISO/MPEG which compresses audio data. MP3 files
must be in MPEG1 Audio Layer 3 format.
nocIscitsiretcarahCogolcsiDepyT
OEDIVDVD•OEDIVDVD • DVD-R/DVD-RW in DVD
VIDEO format or video mode
• DVD+R/DVD+RW in DVD
VIDEO format
VR (Video
Recording) mode • DVD-R/DVD-RW in VR (Video Recording) mode (except for
DVD-R DL)
DCoiduArepuS•DCoiduArepuS
)scsid0.2dna1.1.reV(DCOEDIV•DCOEDIV •SuperVCD
• CD-R/CD-RW/CD-ROM in video
CD format or Super VCD format
DCoiduA•DC • CD-R/CD-RW in audio CD format
niMOR-DC/WR-DC/R-DC•–DCATAD DATA CD format, containing MP3
files1),JPEGimagefiles
2),and
DivX video files3)4)5),and
conforming to ISO 96606) Level 1/
Level 2, or Joliet (extended format)
/WR-DVD/R-DVD/MOR-DVD•–DVDATAD DVD+R/DVD+RW in DATA
DVD format, containing MP3
files1),JPEGimagefiles
2),and
DivX video files3)4)5),and
conforming to UDF (Universal
Disk Format)
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http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
5
6GB
2)JPEG image files must conform to the DCF image file format. (DCF “Design rule for Camera File system”: Image
standards for digital cameras regulated by Japan Electronics and Information Technology Industries Association
(JEITA).)
3)Except for United Kingdom and North American models.
4) DivX®is a video file compression technology, developed by DivX, Inc.
5) DivX, DivX Certified, and associated logos are trademarks of DivX, Inc. and are used under license.
6)A logical format of files and folders on CD-ROMs, defined by ISO (International Organization for
Standardization).
“DVD-RW,” “DVD+RW,” “DVD+R,” “DVD VIDEO,” and the “CD” logos are trademarks.
The system cannot play the following discs:
• CD-ROM/CD-R/CD-RW other than those recorded in the formats listed on page 5
• CD-ROM recorded in PHOTO CD format
• Data part of CD-Extra
• CD Graphics disc
• DVD Audio
• DATA DVD that does not contain MP3 files, JPEG image files, or DivX video files*
* Except for United Kingdom and North American models.
•DVD-RAM
Also, the system cannot play the following discs:
• A DVD VIDEO with a different region code (page 7)
• A disc that has a non-standard shape (e.g., card, heart)
• A disc with paper or stickers on it
• A disc that has the adhesive of cellophane tape or a sticker still left on it
In some cases, CD-R/CD-RW/DVD-R/DVD-RW/DVD+R/DVD+RW cannot be played on this system
due to the recording quality or physical condition of the disc, or the characteristics of the recording
device and authoring software.
The disc will not play ifit has not been correctly finalized. For more information, refer to the operating
instructions for the recording device.
Note that some playback functions may not work with some DVD+RWs/DVD+Rs, even if they have
been correctly finalized. In this case, view the disc by normal playback. Also some DATA CDs/DATA
DVDs created in Packet Write format cannot be played.
Music discs encoded with copyright protection technologies
This product is designed to play back discs that conform to the Compact Disc (CD) standard.
Recently, various music discs encoded with copyright protection technologies are marketed by some
record companies. Please be aware that among those discs, there are some that do not conform to the
CD standard and may not be playable by this product.
Note on DualDiscs
A DualDisc is a two sided disc product which mates DVD recorded material on one side with digital
audio material on the other side. However, since the audio material side does not conform to the
Compact Disc (CD) standard, playback on this product is not guaranteed.
Example of discs that the system cannot play
Note about CD-R/CD-RW/DVD-R/DVD-RW/DVD+R/DVD+RW
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
6
7GB
• This system can play a Multi Session CD when an MP3 file is contained in the first session. Any
subsequent MP3 files recorded in later sessions can also be played back.
• This system can play a Multi Session CD when a JPEG image file is contained in the first session.
Any subsequent JPEG image files recorded in later sessions can also be played back.
• If MP3 files and JPEG image files in music CD format or video CD format are recorded in the first
session, only the first session will be played back.
Your system has a region code printed on the rear of the unit and will only play a DVD labeled with
thesameregioncode.
A DVD VIDEO labeled will also play on this system.
If you try to play any other DVD VIDEO, the message [Playback prohibited by area limitations.] will
appear on the TV screen. Depending on theDVD VIDEO, no region codeindication may be given even
though playing the DVD VIDEO is prohibited by area restrictions.
Some playback operations on a DVD or VIDEO CD may be intentionally set by software producers.
Since this system will play a DVD or VIDEO CD according to the disc contents the software producers
designed, some playback features may not be available. Be sure to read the operating instructions
supplied with the DVD or VIDEO CD.
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, and is intended for homeand other limited viewing uses only unless otherwise authorized
by Macrovision. Reverse engineering or disassembly is prohibited.
This system incorporates with Dolby* Digital and Dolby Pro Logic (II) adaptive matrix surround
decoder and the DTS** Digital Surround System.
* Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”, and the double-D symbol are trademarks of Dolby Laboratories.
**Manufactured under license from DTS, Inc.
“DTS” and “DTS Digital Surround” are registered trademarks of DTS, Inc.
This system incorporates High-Definition Multimedia Interface (HDMITM) technology.
HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered
trademarks of HDMI Licensing, LLC.
“BRAVIA” and are trademarks of Sony Corporation.
About Multi Session CD
Region code
Note about playback operations of a DVD or VIDEO CD
Copyrights
ALL
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http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
7
Additional Information
89GB
Self-diagnosis Function
(When letters/numbers appear in the
display)
When the self-diagnosis function is activated to
prevent the system from malfunctioning, a 5-
character service number (e.g., C 13 50) with a
combination of a letter and 4 digits appears on
the TV screen or front panel display. In this case,
check the following table.
When displaying the version
number on the TV screen
When you turn on the system, the version
number [VER.X.XX] (X is a number) may
appear on the TV screen. Although this is not a
malfunction and for Sony service use only,
normal system operation will not be possible.
Turn off the system, and then turn on the system
again to operate.
First 3
characters of
the service
number
Cause and/or corrective action
C 13 The disc is dirty.
Clean the disc with a soft cloth
(page 80).
C 31 The disc is not inserted correctly.
Restartthesystem,then re-insert
the disc correctly.
EXX
(XX is a
number)
To prevent a malfunction, the
system has performed the self-
diagnosis function.
Contact your nearest Sony
dealer or local authorized Sony
service facility and give the 5-
character service number.
Example: E 61 10
C:13:50
VER.X.XX
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http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
8
1. SERVICING NOTES ............................................. 9
2. GENERAL .................................................................. 11
3. DISASSEMBLY
3-1. Case ................................................................................ 18
3-2. POWER Board................................................................ 18
3-3. Front Panel Section ........................................................ 19
3-4. Back Panel Section ......................................................... 19
3-5. DVD Mechanism Deck................................................... 20
3-6. MAIN Board................................................................... 20
3-7. IO-SCART Board (DZ260),
IO-COMPONENT Board (DZ270/HDZ278)................. 21
3-8. Tray................................................................................. 21
3-9. Belt.................................................................................. 22
3-10. MS-203 Board................................................................. 22
3-11. Base Unit......................................................................... 23
3-12. Optical Pick-up............................................................... 23
4. TEST MODE ............................................................ 24
5. ELECTRICAL ADJUSTMENTS ........................ 29
6. DIAGRAMS
6-1. Block Diagram –RF Section–......................................... 32
6-2. Block Diagram –VIDEO Section– ................................. 33
6-3. Block Diagram –AUDIO Section–................................. 34
6-4. Block Diagram –AMP Section– ..................................... 35
6-5. Block Diagram –POWER Section–................................ 36
6-6. Printed Wiring Board –MAIN Board (Side A)–............. 37
6-7. Printed Wiring Board –MAIN Board (Side B)–............. 38
TABLE OF CONTENTS
6-8. Schematic Diagram –MAIN Board (1/9)–...................... 39
6-9. Schematic Diagram –MAIN Board (2/9)–...................... 40
6-10. Schematic Diagram –MAIN Board (3/9)–...................... 41
6-11. Schematic Diagram –MAIN Board (4/9),
MS-203 Board–............................................................... 42
6-12. Schematic Diagram –MAIN Board (5/9)–...................... 43
6-13. Schematic Diagram –MAIN Board (6/9)–...................... 44
6-14. Schematic Diagram –MAIN Board (7/9)–...................... 45
6-15. Schematic Diagram –MAIN Board (8/9)–...................... 46
6-16. Schematic Diagram –MAIN Board (9/9)–...................... 47
6-17. Printed Wiring Board –IO-SCART Board (DZ260)–..... 48
6-18. Schematic Diagram –IO-SCART Board (DZ260)–........ 49
6-19. Printed Wiring Board –IO-COMPONENT Board
(DZ270/HDZ278)–......................................................... 50
6-20. Schematic Diagram –IO-COMPONENT Board
(DZ270/HDZ278)–......................................................... 51
6-21. Printed Wiring Boards –JACK, P-SW Board– ............... 52
6-22. Schematic Diagram –JACK, P-SW Board–.................... 53
6-23. Printed Wiring Boards
–FL, MS-203, SPEAKER Board–.................................. 54
6-24. Schematic Diagram
–FL, MS-203, SPEAKER Board–.................................. 55
6-25. Printed Wiring Board –POWER Board–........................ 56
6-26. Schematic Diagram –POWER Board–........................... 57
7. EXPLODED VIEWS
7-1. Overall Section ............................................................... 70
7-2. Front Panel Section......................................................... 71
7-3. Chassis Section ............................................................... 72
7-4. DVD Mechanism Deck Section (CDM85-DVBU102) .. 73
8. ELECTRICAL PARTS LIST .............................. 74
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http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
9
SECTION 1
SERVICING NOTES
How to open the disc table when power switch turns off
Insert a tapering driver into the aperture of the unit bottom, and
slide it in the direction of the arrow.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostat-
ic break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Setting Procedure :
1. Press the [?/1] button to turn the set on.
2. Press the [FUNCTION] button to set DVD function.
3. Insert a disc.
4. Press the [x] button and the [A] button simultaneously for five
seconds.
5. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1. Press the [x] button and the [A] button simultaneously for five
seconds again.
2. The message “UNLOCKED” is displayed and the tray is
unlocked.
Note: When “LOCKED” is displayed, the tray lock is not released by
turning power on/off with the [?/1] button.
On cleaning discs, disc/lens cleaners
• Donotusecleaningdiscsordisc/lenscleaners(includingwetor
spray types). These may cause the apparatus to malfunction.
IMPORTANT NOTICE
Caution: This system is capable of holding a still video image or
on-screen display image on your television screen indefinitely.
If you leave the still video image or on-screen display image
displayed on your TV for an extended period of time you risk
permanent damage to your television screen.
Projection televisions are especially susceptible to this.
Attention when transported
Use this mode when returning the set to the customer after repair.
Procedure:
1. Press the [?/1] button to turn the set on.
2. Press the [FUNCTION] button to set the function “DVD”.
3. Remove all discs, and then press two buttons [H] and [?/1]
simultaneously.
4. After a message “MECHA LOCK” is displayed on the
fluorescent indicator tube, pull out the AC plug.
5. To exit from this mode, press the [?/1] button to turn the set
on.
Peel off the seal and so the lever is moved
in the direction of the arrow with the thin rod.
tray
seal
Precaution when installing a new OP unit/
Precaution before unsoldering the static electricity
prevention solder bridge
When installing a new OP unit, be sure to connect the flexible
printedcircuitboardfirstofallbeforeremoving the static electricity
prevention solder bridge by unsoldering.
Remove the static electricity prevention solder bridge by
unsoldering after the flexible printed circuit board has already been
connected.
(Do not remove nor unsolder the solder bridge as long as the OP
unit is kept standalone.)
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
10
Radiation Sheet
When peeling off the heat radiation sheet, try always to put it on
be former position.
four radiation sheets
MAIN board
radiation sheet
POWER board
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
11
SECTION 2
GENERAL This section is extracted
from instruction manual.
Index to Parts and Control (DZ260)
For more information, refer to the pages indicated in parentheses.
"/(on/standby) (20, 78)
#"(open/close) (28)
$Front panel display (96)
%Play operation buttons (28)
&(remote sensor) (9)
'FUNCTION (23)
(VOLUME control (28)
)PHONES jack (28)
*AUDIO IN/A.CAL MIC jack (16, 20, 72)
+(USB)port(60)
,Disc tray (28)
Front panel
Additional Information
"SPEAKER jacks (14)
#COAXIAL 75ΩFM jack (18)
$AM terminal (18)
%EURO AV 5OUTPUT (TO TV) jack (15)
&DMPORT (DIGITAL MEDIA PORT) jack
(16, 69)
'HDMI OUT jack (15)
(TV (DIGITAL IN COAXIAL/OPTICAL)
jacks (15)
Rear panel
CENTER SUBWOOFER
DIGITAL IN
COAXIAL OPTICAL
FRONT R FRONT L SUR R SUR L
SPEAKER
TUOIMDHVT
SPEAKER EURO AV
OUTPUT(TO TV)
COAXIAL 75 AM
FM
ANTENNA
DMPORT
DC5V
0.7A MAX
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2
8 9
4 2
9 8
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Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
12
96GB
About the indications in the front panel display
"Playing status
#Flashes when the sleep timer is set.
(74)
$Displays system’s status such as
chapter, title, or track number, time
information, radio frequency, playing
status, decoding mode, etc.
%Lights up when a station is received.
(Radio only) (53)
&Stereo/Monaural effect (Radio only)
(54)
'Lights up when the HDMI OUT jack is
correctly connected to HDCP (High-
bandwidth Digital Content Protection)
compliant device with HDMI or DVI
(Digital Visual Interface) input. (15)
(Current surround format (Except for
JPEG image file)
)Lights up when an NTSC disc is
loaded.
*Lights up during USB recording/
copying. (66)
+Lights up when Super Audio CD/CD is
loaded. (31)
Front panel display
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0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
13
Additional Information
97GB
Remote control
SNOITPIRCSEDNOTTUBREDROLACITEBAHPLA
Z–PO–A
ANGLE (29)
AUDIO RI (30)
CLEAR FT (34, 46, 54)
D.TUNING XT (54)
DISC SKIP1) FE
DISPLAY XB (55, 65, 75)
DVD MENU XH (36)
DVD TOP MENU RE (36)
DYNAMIC BASS (74)
ENTER2) XG (19, 20, 31, 34, 53,
71)
FUNCTION +/– (23, 28)
MENU XH (73)
MUTING (28)
NIGHT XE (74)
ONE-TOUCH PLAY FH (58)
PICTURE NAVI RH (39, 62)
PRESET +/– XK (54)
PROG +/– XK (73)
S-AIR MODE1) 
SLEEP RK (74)
SOUND MODE (27)
SUBTITLE XT (30)
SYSTEM MENU XG (19, 23, 74,
75)
THEATRE RL (57)
TOOLS XI (73)
TUNING +/– (53)
TV XM (73)
TV INPUT X (73)
TV VOL +/– FG (73)
VOLUME +/–(28)
Number buttons RG (32, 53, 73)
</(on/standby) (19, 20, 28)
TV </(on/standby) RM (73)
$/9/Y/D/RT (19, 20, 31, 34,
53, 71) REPLAY/ADVANCE
(28)
/XK (28)
N/.(28)
STEP / (28)
SLOW / (28)
)(play) F (28)
Y(stop) XL (28)
9(pause) RB (28)
DISPLAY3) XI (20, 31, 34, 71)
0RETURNFB (32, 73)
-/-- FT (73)
1)This button is not available
for this model.
2)The ENTER button has the
same function as the
button. When you operate
theTV, theENTERbuttonis
used for selecting a channel,
and the button is used for
selecting menu items
(page 73).
3)This button is only available
for the “DVD” or “USB”
function.
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4 2
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
14
Additional Information
Index to Parts and Control (DZ270/HDZ278)
For more information, refer to the pages indicated in parentheses.
"/(on/standby) (27, 85)
#"(open/close) (35)
$Front panel display (105)
%Play operation buttons (35)
&(remote sensor) (11)
'FUNCTION (30)
(VOLUME control (35)
)PHONES jack (35)
*AUDIO IN/A.CAL MIC jack (21, 27, 79)
+(USB) port (DAV-DZ270 only) (67)
,Disc tray (35)
Front panel
DAV-DZ270
DAV-HDZ278
"SPEAKER jacks (16)
#COAXIAL 75ΩFM jack (24)
$AM terminal (24)
%TV/VIDEO (AUDIO IN R/L) jacks (18, 21)
&VIDEO OUT jack (18)
'COMPONENT VIDEO OUT jacks (18)
(DMPORT (DIGITAL MEDIA PORT) jack
(DAV-HDZ278 only) (21, 76)
)HDMI OUT jack (18)
*TV/VIDEO (DIGITAL IN COAXIAL/
OPTICAL) jacks (DAV-HDZ278 only)
(18)
Rear panel
CENTER SUBWOOFER
AUDIO IN
P
B /C B P R /C R YLR
FRONT R FRONT L SUR R SUR L
SPEAKER
VIDEO OUT TV/VIDEO
SPEAKER
COMPONENT VIDEO OUT
COAXIAL 75 AM
FM
ANTENNA
HDMI OUT
CENTER SUBWOOFER
DIGITAL IN
P
B
/C
B
P
R
/C
R
Y
COAXIAL OPTICAL
FRONT R FRONT L SUR R SUR L
SPEAKER
TUOIMDHOEDIV/VT VIDEO OUT
SPEAKER
COMPONENT VIDEO OUT
COAXIAL 75 AM
FM
ANTENNA
DMPORT
DC5V
0.7A MAX
AUDIO IN LR
TV/VIDEO
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
15
Additional Information
105GB
About the indications in the front panel display
"Playing status
#Flashes when the sleep timer is set.
(81)
$Displays system’s status such as
chapter, title, or track number, time
information, radio frequency, playing
status, decoding mode, etc.
%Lights up when a station is received.
(Radio only) (61)
&Stereo/Monaural effect (Radio only)
(62)
'Lights up when the HDMI OUT jack is
correctly connected to HDCP (High-
bandwidth Digital Content Protection)
compliant device with HDMI or DVI
(Digital Visual Interface) input. (18)
(Current surround format (Except for
JPEG image file)
)Lights up when the color system is set
toNTSC.(Asian,Australian, andMiddle
Eastern models only)
*Lights up during USB recording/
copying. (DAV-DZ270 only) (73)
+Lights up when Super Audio CD/CD is
loaded. (38)
Front panel display
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2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
16
106GB
Remote control
SNOITPIRCSEDNOTTUBREDROLACITEBAHPLA
Z–PO–A
ANGLE (36)
AUDIO RI (37)
CLEAR FT (40, 52, 62)
D.TUNING XT (62)
DISC SKIP1) FE
DISPLAY XB (63, 72, 82)
DVD MENU XH (43)
DVD TOP MENU RE (43)
DYNAMIC BASS (81)
ENTER2) XG (26, 27, 38, 40, 61,
78)
FUNCTION +/– (30, 35)
MENU XH (80)
MUTING (35)
NIGHT XE (81)
ONE-TOUCH PLAY FH (65)
PICTURE NAVI RH (45, 69)
PRESET +/– XK (62)
PROG +/–3) XK (80)
S-AIR MODE1) 
SLEEP RK (81)
SOUND MODE (34)
SUBTITLE XT (37)
SYSTEM MENU XG (26, 31, 81,
82)
THEATER/THEATRE4) RL (64)
TOOLS XI (80)
TUNING +/– (61)
TV XM (80)
TV CH +/–5) XK (80)
TV INPUT X (80)
TV VOL +/– FG (80)
VOLUME +/–(35)
Number buttons RG (39, 61, 80)
</(on/standby) (26, 27, 35)
TV </(on/standby) RM (80)
$/9/Y/D/RT (26, 27, 38, 40,
61, 78) REPLAY/ADVANCE
(35)
/XK (35)
N/.(35)
STEP / (35)
SLOW / (35)
)(play) F (35)
Y(stop) XL (35)
9(pause) RB (35)
DISPLAY6) XI (27,38,40,78)
0RETURNFB (39, 80)
-/--3) FT (80)
5) FT (80)
1)This button is not available
for this model.
2)The ENTER button has the
same function as the
button. When you operate
theTV, theENTERbuttonis
used for selecting a channel,
and the button is used for
selecting menu items
(page 80).
3)Except for North American
models.
4)The button name differs
depending on the area.
5)North American models
only.
6)This button is only available
for the “DVD” or “USB*”
function.
* DAV-DZ270 only
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4 2
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
17
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-4. BACK PANEL SECTION
(Page 19)
3-6. MAIN BOARD
(Page 20)
3-1. CASE
(Page 18)
3-2. POWER BOARD
(Page 18)
SET
3-3. FRONT PANEL SECTION
(Page 19)
3-5. DVD MECHANISM DECK
(Page 20)
3-8. TRAY
(Page 21)
3-10. MS-203 BOARD
(Page 22) 3-12. OPTICAL PICK-UP
(Page 23)
3-7. IO-SCART BOARD (DZ260)
IO-COMPONENT BOARD
(DZ270/HDZ278)
(Page 21)
3-9. BELT
(Page 22) 3-11. BASE UNIT
(Page 23)
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
18
Note: Follow the disassembly procedure in the numerical order shown below.
3-1. CASE
3-2. POWER BOARD
five screws
(BV/RING)
case
two screws
(case 3 TP2)
two screws
(case 3 TP2)
CN3001 (4P)
CN904 (4P)
CN906 (13P)
two screws
(+PWH 3 × 8)
shield plate (HP)
six screws
(+PWH 3 × 8)
POWER board
cover (USB)
two claws
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7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
19
3-3. FRONT PANEL SECTION
3-4. BACK PANEL SECTION
two screws
(+BV3 (3-CR))
five screws
(+BV3 (3-CR))
front panel section
loading panel
CN412 (4P) (DZ260/DZ270)
CN2101 (5P)
wire (flat type)(19 core)
(CN502)
label
tray


CN3000 (2P)
wire (flat type) (11 core) (CN414) (DZ260)
wire (flat type) (9 core) (CN419) (DZ270/HDZ278)
two screws
(+BVTP 3 × 8)
back panel section
two screws
(+BVTP 3 × 8)
two screws
(+BVTP 3 × 8)
screw
(+BVTP 3 × 8)
screw
(+BVTP 3 × 8)
screw
(+B 3 × 6)
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6 3
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0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-DZ260/DZ270/HDZ278
20
CN1201 (6P)
wire (flat type)(24 core)
(CN101)
wire (flat type)(5 core)
(CN1202)
screw
(+BV3 (3-CR))
two screws
(+BV3 (3-CR))
DVD mechanism deck
screw
(+BV3 (3-CR))
screw
(+BV3 (3-CR))
screw
(+BV3 (3-CR))
cover (CDM-DSR)
3-6. MAIN BOARD
CN1141 (8P)
wire (flat type)(5 core)
(CN702) two screws
(+BV3 (3-CR))
two screws
(+BV3 (3-CR))
RB two screws
(+BV3 (3-CR))
RT six screws
(+BV3 (3-CR))
RE MAIN board
heat sink section
two radiation sheet
SPEAKER board
wire (flat type) (19 core) (CN602)
(DZ260)
wire (flat type) (17 core) (CN603)
(DZ270/HDZ278)
wire (flat type) (19 core) (CN4301) (DZ260)
wire (flat type) (15 core) (CN4303) (DZ270)
wire (flat type) (17 core) (CN4302) (HDZ278)
screw
(+BVTP 3 × 12)
3-5. DVD MECHANISM DECK
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0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com