Read Sony HT-DDW890 / STR-K890 Service Manual online
SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
Published by Sony Techno Create Corporation
AEP Model
UK Model
MULTI CHANNEL AV RECEIVER
9-887-520-02
2007C16-1
© 2007.03
© 2007.03
Ver. 1.1 2007.03
SPECIFICATIONS
STR-K890
• STR-K890 is the tuner and the amplifier section
in HT-DDW890.
This receiver incorporates Dolby* Digital and Pro Logic Surround and
the DTS** Digital Surround System.
*
the DTS** Digital Surround System.
*
Manufactured under license from Dolby Laboratories. “Dolby”, “Pro
Logic”, “Surround EX”, and the double-D symbol are trademarks of
Dolby Laboratories.
Logic”, “Surround EX”, and the double-D symbol are trademarks of
Dolby Laboratories.
** “DTS” and “DTS-ES Neo:6” are registered trademarks of DTS, Inc.
“96/24” is a trademark of DTS, Inc.
— Continued on next page —
Amplifier section
Power Output
1)
Models of area code AEP, UK
Stereo mode (6 ohms, 1 kHz, THD 1%)
90 W + 90 W
Surround mode
2)
(reference) (6 ohms, 1 kHz,
THD 10%)
RMS output
FRONT:135 W
per channel
CENTER:135 W
SURROUND:135 W
per channel
SURROUND BACK:
135 W
1)
Measured under the following conditions:
2)
Reference power output for front, center, surround
and surround back speakers. Depending on the
sound field settings and the source, there may be
no sound output.
and surround back speakers. Depending on the
sound field settings and the source, there may be
no sound output.
Inputs (Analog)
Inputs (Digital)
Outputs (Analog)
Reproduction frequency range:
28 – 20,000 Hz
Tone
FM tuner section
Tuning range
87.5 - 108.0 MHz
Antenna
FM wire antenna
Antenna terminals
75 ohms, unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Models of area code AEP, UK
With 9-kHz tuning scale:
531 – 1,602 kHz
Antenna
Loop antenna
Intermediate frequency
450 kHz
Video section
Inputs/Outputs
Video:
1 Vp-p, 75 ohms
COMPONENT VIDEO:
Y: 1 Vp-p, 75 ohms
P
B
/C
B
: 0.7 Vp-p, 75 ohms
P
R
/C
R
: 0.7 Vp-p, 75 ohms
80 MHz HD Pass Through
Area code
Power requirements
AEP, UK
230 V AC, 50 Hz
SA-CD/CD/CD-R,
TV, SAT, DVD,
VIDEO 1, 3
VIDEO 1, 3
Sensitivity: 800 mV
Impedance: 50 kohms
DVD (Coaxial)
Sensitivity: –
Impedance: 75 ohms
SAT, VIDEO 2/BD
(Optical)
(Optical)
Sensitivity: –
Impedance: –
SA-CD/CD/CD-R
(OUT),
(OUT),
VIDEO 1 (AUDIO
OUT)
OUT)
Voltage: 800 mV
Impedance: 10 kohms
SUB WOOFER
Voltage: 2 V
Impedance: 1 kohm
Gain levels
±6 dB, 1 dB step
2
STR-K890
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
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
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
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 viscou-s (sticky, less prone to flow)
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.
SAFETY-RELATED COMPONENT 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 WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
Dimensions (width/height/depth) (Approx.)
430
× 157.5 × 310 mm
including projecting parts
and controls
and controls
Mass (Approx.)
7.6 kg
Design and specifications are subject to
change without notice.
change without notice.
General
Power requirements
Power requirements (DIGITAL MEDIA PORT)
DC OUT:
5V, 700 mA
Power consumption
Power consumption (during standby mode)
0.3 W
Area code
Power requirements
AEP, UK
230 V AC, 50/60 Hz
Area code
Power consumption
AEP, UK
200 W
About area codes
The area code of the receiver you purchased is
shown on the lower right portion of the rear panel
(see the illustration below).
shown on the lower right portion of the rear panel
(see the illustration below).
Any differences in operation, according to the area
code, are clearly indicated in the text, for example,
“Models of area code AA only”.
code, are clearly indicated in the text, for example,
“Models of area code AA only”.
SURROUND
L
R
CENTER
SURROUND BACK
Area code
3
STR-K890
TABLE OF CONTENTS
1.
GENERAL
...................................................................
4
2.
TEST MODE
............................................................... 10
3.
ELECTRICAL ADJUSTMENT
............................. 12
4.
DIAGRAMS
................................................................. 13
4-1.
Block Diagram – MAIN Section – .................................. 14
4-2.
Block Diagram – DISPLAY/POWER Section – ............. 15
4-3.
Printed Wiring Board – DIGITAL Board (Side A) – ...... 16
4-4.
Printed Wiring Board – DIGITAL Board (Side B) – ...... 17
4-5.
Schematic Diagram – DIGITAL Board (1/5) – .............. 18
4-6.
Schematic Diagram – DIGITAL Board (2/5) – .............. 19
4-7.
Schematic Diagram – DIGITAL Board (3/5) – .............. 20
4-8.
Schematic Diagram – DIGITAL Board (4/5) – .............. 21
4-9.
Schematic Diagram – DIGITAL Board (5/5) – .............. 22
4-10. Printed Wiring Board – MAIN Board – ......................... 23
4-11. Schematic Diagram – MAIN Board (1/4) – ................... 24
4-12. Schematic Diagram – MAIN Board (2/4) – ................... 25
4-13. Schematic Diagram – MAIN Board (3/4) – ................... 26
4-14. Schematic Diagram – MAIN Board (4/4) – ................... 27
4-15. Printed Wiring Boards
4-11. Schematic Diagram – MAIN Board (1/4) – ................... 24
4-12. Schematic Diagram – MAIN Board (2/4) – ................... 25
4-13. Schematic Diagram – MAIN Board (3/4) – ................... 26
4-14. Schematic Diagram – MAIN Board (4/4) – ................... 27
4-15. Printed Wiring Boards
– DISPLAY Board, POWER KEY Board – .................... 28
4-16. Schematic Diagram
– DISPLAY Board, POWER KEY Board – .................... 29
4-17. Printed Wiring Boards
– STANDBY Board, DCDC Board – .............................. 30
4-18. Schematic Diagram
– STANDBY Board, DCDC Board – .............................. 31
4-19. Printed Wiring Boards
– DCAC Board, VIDEO3 Board – .................................. 32
4-20. Schematic Diagram
– DCAC Board, VIDEO3 Board – .................................. 33
4-21. Printed Wiring Boards
– VIDEO Board, HEADPHONE Board – ....................... 34
4-22. Schematic Diagram
– VIDEO Board, HEADPHONE Board – ....................... 35
4-23. Printed Wiring Board – HDMI SW Board – .................. 36
4-24. Schematic Diagram – HDMI SW Board – ..................... 37
4-24. Schematic Diagram – HDMI SW Board – ..................... 37
5.
EXPLODED VIEWS
5-1.
Front Panel Section ......................................................... 44
5-2.
Chassis Section ................................................................ 45
6.
ELECTRICAL PARTS LIST
.................................. 46
4
STR-K890
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
Front panel
.
Receiver
?/1
AUTO CAL MIC
SPEAKERS
(OFF/A/B/A+B)
PHONES
VIDEO 3 IN/PORTABLE AV IN
VIDEO
L AUDIO R
MEMORY/
ENTER
TUNING
MODE
TUNING
2CH
A.F.D.
MOVIE
MUSIC
AUTO CAL
MUTING
DISPLAY
INPUT MODE
INPUT SELECTOR
MASTER VOLUME
3
4
8
9
1 2
5
6
7
q;
qa
qj
qs
qg
qh
qd
qf
Name
Function
A
?
/
1
(on/standby)
Press to turn the receiver on
or off.
or off.
B
SPEAKERS
(OFF/A/B/A+B)
(OFF/A/B/A+B)
Press to select the speaker
system.
system.
C
Display
The current status of the
selected component or a list
of selectable items appears
here.
selected component or a list
of selectable items appears
here.
D
Remote sensor
Receives signals from
remote commander.
remote commander.
E
DISPLAY
Press to select information
displayed on the display.
displayed on the display.
Name
Function
F
INPUT MODE
Press to select the input
mode when the same
components are connected
to both digital and analog
jacks.
mode when the same
components are connected
to both digital and analog
jacks.
G
MASTER
VOLUME
VOLUME
Turn to adjust the volume
level of all speakers at the
same time.
level of all speakers at the
same time.
H
MUTING
Press to mute the sound.
I
AUTO CAL
Press to activate the Auto
Calibration function.
Calibration function.
J
INPUT
SELECTOR
SELECTOR
Turn to select the input
source to playback.
source to playback.
K
2CH
Press to select a sound field.
A.F.D.
MOVIE
MUSIC
L
TUNING +/–
Press to scan a station.
M
TUNING MODE
Press to select the tuning
mode.
mode.
N
MEMORY/
ENTER
ENTER
Press to store a station or
enter the selection when
selecting the settings.
enter the selection when
selecting the settings.
O
VIDEO 3 IN/
PORTABLE AV
IN jacks
PORTABLE AV
IN jacks
Connects to a camcorder or
video game.
video game.
P
AUTO CAL MIC
jack
jack
Connects to the supplied
optimizer microphone for
the Auto Calibration
function.
optimizer microphone for
the Auto Calibration
function.
Q
PHONES jack
Connects to a headphone.
