Sony DAV-HDX274 / HCD-HDX274 Service Manual ▷ View online
SERVICE MANUAL
Sony Corporation
Audio Business Group
Published by Sony Techno Create Corporation
SPECIFICATIONS
DVD RECEIVER
9-889-065-01
2008D05-1
©
2008.04
US Model
Ver. 1.0 2008.04
Model Name Using Similar Mechanism
HCD-HDX265
DVD Mechanism Type
CDM81C-DVBU101
Optical Pick-up Block Name
KHM-310CAB or
KHM-313CAB
KHM-313CAB
• HCD-HDX274 is the amplifier section, super audio CD/DVD
system, tuner section and video section in DAV-HDX274.
HCD-HDX274
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 Mac-
rovision, and is intended for home and 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.
intellectual property rights. Use of this copyright protection technology must be authorized by Mac-
rovision, and is intended for home and 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-Defi nition Multimedia Interface (HDMITM) technology.
HDMI, the HDMI logo and High-Defi nition Multimedia Interface are trademarks or registered trade-
marks of HDMI Licensing LLC.
HDMI, the HDMI logo and High-Defi nition Multimedia Interface are trademarks or registered trade-
marks of HDMI Licensing LLC.
“BRAVIA” and
are trademarks of Sony Corporation.
AUDIO POWER SPECIFICATIONS
Super Audio CD/DVD System
Laser Semiconductor
laser
(Super Audio CD/DVD:
λ
= 650 nm)
(CD:
(CD:
λ = 790 nm)
Emission duration:
continuous
continuous
Signal format system
NTSC
Tuner Section
System
PLL quartz-locked digital
synthesizer
synthesizer
FM tuner section
Tuning range
Tuning range
87.5 MHz - 108.0 MHz
(100 kHz step)
(100 kHz step)
Antenna (aerial)
FM wire antenna (aerial)
Antenna (aerial) terminals 75 ohms, unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Tuning range
Antenna (aerial)
AM loop antenna (aerial)
Intermediate frequency
450 kHz
Video Section
Outputs
VIDEO: 1 Vp-p 75 ohms
COMPONENT:
Y: 1 Vp-p 75 ohms
COMPONENT:
Y: 1 Vp-p 75 ohms
P
B
/C
B
, P
R
/C
R
: 0.7 Vp-p
75 ohms
HDMI OUT: Type A (19
pin)
pin)
530 kHz - 1,710 kHz (with
the interval set at 10 kHz)
531 kHz - 1,710 kHz (with
the interval set at 9 kHz)
the interval set at 10 kHz)
531 kHz - 1,710 kHz (with
the interval set at 9 kHz)
General
Power requirements
120 V AC, 60 Hz
Power consumption
On: 160 W
Standby: 0.3 W (at the
Power Saving mode)
Standby: 0.3 W (at the
Power Saving mode)
Output voltage (DIGITAL MEDIA PORT)
DC 5 V
Output current (DIGITAL MEDIA PORT)
700 mA
Dimensions (approx.)
430 mm × 85 mm × 420
mm (17 in × 3
mm (17 in × 3
3
/
8
in ×
16
5
/
8
in) (w/h/d) incl.
projecting parts
Mass (approx.)
5.2 kg (11 lb 8 oz)
Design and specifications are subject to change
without notice.
without notice.
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
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.
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
Surround mode (reference) RMS output power
FL/FR/C/SL/SR*: 143 watts
(per channel at 3 ohms, 1
kHz, 10% THD)
Subwoofer*: 285 watts (at
1.5 ohms, 80 Hz, 10%
THD)
(per channel at 3 ohms, 1
kHz, 10% THD)
Subwoofer*: 285 watts (at
1.5 ohms, 80 Hz, 10%
THD)
* Depending on the decoding mode settings and the
source, there may be no sound output.
Inputs (Analog)
TV/VIDEO (AUDIO IN) Sensitivity: 450/250 mV
AUDIO IN
TV/VIDEO (AUDIO IN) Sensitivity: 450/250 mV
AUDIO IN
Sensitivity: 250/125 mV
Inputs (Digital)
TV/VIDEO (COAXIAL IN/OPTICAL IN)
TV/VIDEO (COAXIAL IN/OPTICAL IN)
Impedance: 75 ohms/-
Outputs (Analog)
Phones
Phones
Accepts low- and high-
impedance headphones.
impedance headphones.
HCD-HDX274
2
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.
aged by heat.
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.
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
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.
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-operated AC 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 V AC range are suitable. (See
Fig. A)
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 V AC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
μF
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
SAFETY-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK
0 OR DOTTED LINE
WITH MARK
0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
CAUTION
Use of controls or adjustments or performance of procedures other than
those specifi ed herein may result in hazardous radiation exposure.
Use of controls or adjustments or performance of procedures other than
those specifi ed herein may result in hazardous radiation exposure.
SELF DIAGNOSIS FUNCTION
(When letters/numbers appear in the
display)
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.
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
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.
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
characters of
the service
number
Cause and/or corrective action
C 13
The disc is dirty.
Clean the disc with a soft cloth.
Clean the disc with a soft cloth.
C 31
The disc is not inserted correctly.
Restart the system, then re-insert
the disc correctly.
E XX
(XX is a
number)
number)
To prevent a malfunction, the
system has performed the self-
diagnosis function.
Contact your nearest Sony
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.
service facility and give the 5-
character service number.
Example: E 61 10
C:13:50
VER.X.XX
HCD-HDX274
3
1.
SERVICING NOTES
............................................. 4
2. GENERAL
.................................................................. 8
3. DISASSEMBLY
3-1. Disassembly
Flow
........................................................... 9
3-2. Case
(DCR)
..................................................................... 10
3-3. Front Panel Block ........................................................... 10
3-4. POWER
3-4. POWER
Board
................................................................ 11
3-5. Back Panel Block ............................................................ 11
3-6. SPEAKER Board, SERIPARA Board and
MAIN
3-6. SPEAKER Board, SERIPARA Board and
MAIN
Board
...................................................................
12
3-7. Cover
(CDM-DCR)
........................................................ 12
3-8. DVD Mechanism Deck (CDM81C-DVBU101) ............. 13
3-9. Tray
3-9. Tray
(Main)
Assy
............................................................ 13
3-10. MOTOR Board ............................................................... 14
3-11. Optical Pick-up Section .................................................. 14
3-12. Optical Pick-up Block
3-11. Optical Pick-up Section .................................................. 14
3-12. Optical Pick-up Block
(KHM-310CAB or KHM-313CAB) ............................... 15
3-13. Gear (Sub Tray 1)/Gear (Sub Tray 2) ............................. 15
3-14. Lever (Mode) .................................................................. 16
3-15. Stocker Block .................................................................. 16
3-16. Cam (Stocker) ................................................................. 17
3-17. Gear (Stocker 3) .............................................................. 17
3-18. Rotary Encoder (MD) (S771) ......................................... 18
3-19. Gear (BU1) ..................................................................... 18
3-14. Lever (Mode) .................................................................. 16
3-15. Stocker Block .................................................................. 16
3-16. Cam (Stocker) ................................................................. 17
3-17. Gear (Stocker 3) .............................................................. 17
3-18. Rotary Encoder (MD) (S771) ......................................... 18
3-19. Gear (BU1) ..................................................................... 18
4.
TEST MODE
............................................................ 19
5. ELECTRICAL
ADJUSTMENTS
........................ 24
6. DIAGRAMS
6-1. Block Diagram - RF SERVO/VIDEO Section - ............. 25
6-2. Block
6-2. Block
Diagram
- CHANGER/HDMI/DMPORT/TUNER Section - ........ 26
6-3. Block Diagram - AMP Section - ..................................... 27
6-4. Block
6-4. Block
Diagram
- PANEL/POWER SUPPLY Section - ............................ 28
6-5. Printed
Wiring
Board
- MAIN Board (Component Side) - ................................ 30
6-6. Printed
Wiring
Board
- MAIN Board (Conductor Side) - .................................. 31
6-7. Schematic Diagram - MAIN Board (1/12) - ................... 32
6-8. Schematic Diagram - MAIN Board (2/12) - ................... 33
6-9. Schematic Diagram - MAIN Board (3/12) - ................... 34
6-10. Schematic Diagram - MAIN Board (4/12) - ................... 35
6-11. Schematic Diagram - MAIN Board (5/12) - ................... 36
6-12. Schematic Diagram - MAIN Board (6/12) - ................... 37
6-13. Schematic Diagram - MAIN Board (7/12) - ................... 38
6-14. Schematic Diagram - MAIN Board (8/12) - ................... 39
6-15. Schematic Diagram - MAIN Board (9/12) - ................... 40
6-16. Schematic Diagram - MAIN Board (10/12) - ................. 41
6-17. Schematic Diagram - MAIN Board (11/12) - ................. 42
6-18. Schematic Diagram - MAIN Board (12/12) - ................. 43
6-19. Printed Wiring Board - SERIPARA Board - ................... 43
6-20. Schematic Diagram - SERIPARA Board - ...................... 44
6-21. Printed Wiring Board
6-8. Schematic Diagram - MAIN Board (2/12) - ................... 33
6-9. Schematic Diagram - MAIN Board (3/12) - ................... 34
6-10. Schematic Diagram - MAIN Board (4/12) - ................... 35
6-11. Schematic Diagram - MAIN Board (5/12) - ................... 36
6-12. Schematic Diagram - MAIN Board (6/12) - ................... 37
6-13. Schematic Diagram - MAIN Board (7/12) - ................... 38
6-14. Schematic Diagram - MAIN Board (8/12) - ................... 39
6-15. Schematic Diagram - MAIN Board (9/12) - ................... 40
6-16. Schematic Diagram - MAIN Board (10/12) - ................. 41
6-17. Schematic Diagram - MAIN Board (11/12) - ................. 42
6-18. Schematic Diagram - MAIN Board (12/12) - ................. 43
6-19. Printed Wiring Board - SERIPARA Board - ................... 43
6-20. Schematic Diagram - SERIPARA Board - ...................... 44
6-21. Printed Wiring Board
- I/O Board (Component Side) - ..................................... 46
6-22. Printed Wiring Board
- I/O Board (Conductor Side) - ....................................... 47
6-23. Schematic Diagram - I/O Board - ................................... 48
6-24. Printed Wiring Board - SPEAKER Board - .................... 49
6-25. Schematic Diagram - SPEAKER Board - ....................... 49
6-24. Printed Wiring Board - SPEAKER Board - .................... 49
6-25. Schematic Diagram - SPEAKER Board - ....................... 49
TABLE OF CONTENTS
6-26. Printed Wiring Board - FL Board - ................................. 50
6-27. Schematic Diagram - FL Board - .................................... 51
6-28. Printed Wiring Boards - RELAY Section - ..................... 52
6-29. Schematic Diagram - RELAY Section - ......................... 53
6-30. Printed Wiring Boards - JACK-KEY Section - .............. 54
6-31. Schematic Diagram - JACK-KEY Section - ................... 55
6-32. Printed Wiring Board - POWER Board - ........................ 56
6-33. Schematic Diagram - POWER Board - .......................... 57
6-27. Schematic Diagram - FL Board - .................................... 51
6-28. Printed Wiring Boards - RELAY Section - ..................... 52
6-29. Schematic Diagram - RELAY Section - ......................... 53
6-30. Printed Wiring Boards - JACK-KEY Section - .............. 54
6-31. Schematic Diagram - JACK-KEY Section - ................... 55
6-32. Printed Wiring Board - POWER Board - ........................ 56
6-33. Schematic Diagram - POWER Board - .......................... 57
7.
EXPLODED VIEWS
7-1. Case
Section
.................................................................... 72
7-2. Front Panel Section ......................................................... 73
7-3. Chassis
7-3. Chassis
Section
............................................................... 74
7-4. DVD Mechanism Deck Section-1
(CDM81C-DVBU101)
(CDM81C-DVBU101)
...................................................
75
7-5. DVD Mechanism Deck Section-2
(CDM81C-DVBU101)
(CDM81C-DVBU101)
...................................................
76
7-6. DVD Mechanism Deck Section-3
(CDM81C-DVBU101)
(CDM81C-DVBU101)
...................................................
77
7-7. Optical Pick-up Section .................................................. 78
8.
ELECTRICAL PARTS LIST
.............................. 79
HCD-HDX274
4
SECTION 1
SERVICING NOTES
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
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
• 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.
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
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 fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
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.
also be added to ordinary solder.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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 fl exible board is easily damaged and should be handled with
care.
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 fl exible 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 refl ective 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.
The laser beam on this model is concentrated so as to be focused
on the disc refl ective 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.
RELEASING THE TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure:
1. Press the [
1. Press the [
?/1
] button to turn on the system.
2. Press the [FUNCTION] button repeatedly to select “DVD”.
3. While pressing the [
3. While pressing the [
s
] button, press the [
A
] button until “UN-
LOCKED” displayed on the fl uorescent indicator tube (around
5 seconds).
5 seconds).
Note: When “LOCKED” is displayed, the tray lock is not released by
turning power on/off with the [
?/1] button.
RELEASING THE DEMO PLAY LOCK
Releasing Procedure:
1. Press the [
Releasing Procedure:
1. Press the [
?/1
] button to turn on the system.
2. Press the [FUNCTION] button repeatedly to select “DVD”.
3. While pressing the [
3. While pressing the [
s
] button, press the [
H
] button until
“DEMO OFF” displayed on the fl uorescent indicator tube
(around 5 seconds).
(around 5 seconds).
Note: When “DEMO ON” is displayed, the set is not possible to turn off
the system.
NOTE OF REPLACING THE IC1103 ON THE MAIN
BOARD
IC1103 on the MAIN board cannot exchange with single. When
IC1103 on the MAIN board is damaged, exchange the entire
mounted board.
BOARD
IC1103 on the MAIN board cannot exchange with single. When
IC1103 on the MAIN board is damaged, exchange the entire
mounted board.
