HT-DDW680, HT-DDW780, HTP-36DW, STR-K680, STR-K780 - Sony Audio Service Manual (repair manual)

ht-ddw680, ht-ddw780, htp-36dw, str-k680, str-k780 service manual
Model
HT-DDW680 HT-DDW780 HTP-36DW STR-K680 STR-K780
Pages
52
Size
6.17 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
ht-ddw680-ht-ddw780-htp-36dw-str-k680-str-k780.pdf
Date

Read Sony HT-DDW680 / HT-DDW780 / HTP-36DW / STR-K680 / STR-K780 Service Manual online

SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
AEP Model
UK Model
STR-K780
E Model
STR-K680/K780
Australian Model
STR-K780
MULTI CHANNEL AV RECEIVER
9-887-140-04
2006H16-1
© 2006.08
Ver. 1.3  2006.08
SPECIFICATIONS
STR-K680/K780
• STR-K680 is the tuner and the amplifier section
in HT-DDW680, STR-K780 is the tuner and the
amplifier section in HT-DDW780/HTP-36DW.
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks of
Dolby Laboratories.
“DTS” and “DTS Digital Surround” are registered trademarks of
Digital Theater Systems, Inc.
— Continued on next page —
Photo : STR-K780
Amplifier section
Power Output
1)
Models of area code SP, SP6
(6 ohms 1 kHz, THD 0.7%) 
FRONT
2)
: 70 W/ch
CENTER
2)
: 70 W
SUR
2)
: 70 
W/ch
(6 ohms 1 kHz, THD 10%) 
FRONT
2)
:   10 0 W/ch
CENTER
2)
:
10 0   W
SUR
2)
:
 
10 0 W/ch
Models of area code AEP, UK, RU
(6 ohms 1 kHz, THD 0.7%) 
FRONT
2)
: 85 
W/ch
CENTER
2)
: 85 W
SUR
2)
  8
:
5   W / ch
(6 ohms 1 kHz, THD 10%)
 
FRONT
2)
:   12 2 W/ch
CENTER
2)
: 122 W
SUR
2)
:
 
122 W/c h
Models of area code AUS
(6 ohms 120 Hz–20 kHz, THD 0.09%) 
FRONT
2)
: 50 
W/ch
CENTER
2)
: 50 W
SUR
2)
: 50 
W/ch
(6 ohms 1 kHz, THD 0.7%) 
FRONT
2)
: 85 
W/ch
CENTER
2)
: 85 W
SUR
2)
: 85 
W/ch
(6 ohms 1 kHz, THD 10%) 
FRONT
2)
:   12 2 W/ch
CENTER
2)
: 12 2 W
SUR
2)
:
 
122 W/ch
1)
Measured under the following conditions:
2)
Depending on the sound field settings and the 
source, there may be no sound output.
Area code
Power requirements
SP, SP6, AEP, UK, RU 230 V AC, 50 Hz
AR
230 V AC, 50 Hz
Models of area code E51, MX
Power Output
1)
(6 ohms 1 kHz, THD 0.7%)
FRONT
2)
: 70 
W/ch
CENTER
2)
: 70 
W
SUR
2)
: 70 
W/ch
(6 ohms 100 Hz, THD 0.7%)
SUB WOOFER
2)
:  70 W
(6 ohms 1 kHz, THD 10%)
FRONT
2)
: 100 
W/ch
CENTER
2)
: 10 0 
W
SUR
2)
: 10 0 
W/ch
(6 ohms 100 Hz, THD 10%)
SUB WOOFER
2)
:  10 0 W
E51, AUS
240 V AC, 50 Hz
MX
127 V AC, 60 Hz
Models of area code AR
Power Output
1)3)
(6 ohms 1 kHz, THD 0.7%)
FRONT
2)
:  
W/ch
1)
, 65 W/ch
3)
CENTER
2)
:  
W
1)
, 65 W
3)
SUR
2)
:  
W/ch
1)
, 65 W/ch
3)
(6 ohms 100 Hz, THD 0.7%)
SUB WOOFER
2)
: W
1)
, 65 W
3)
(6 ohms 1 kHz, THD 10%)
FRONT
2)
: 100 
100 
100 
100 
W/ch
1)
, 90 W/ch
3)
CENTER
2)
:
 
W
1)
, 90 W
3)
SUR
2)
:
W/ch
1)
, 90 W/ch
3)
(6 ohms 100 Hz, THD 10%)
SUB WOOFER
2)
:
W
1)
, 90 W
3)
3)
Measured under the following conditions:
Area code
Power requirements
AR
220 V AC, 50 Hz
70
70
70
70
2
STR-K680/K780
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).
Any differences in operation, according to the area 
code, are clearly indicated in the text, for example, 
“Models of area code AA only”.
CENTER
FRONT
L
R
L
R
+
+
Area code
MODEL IDENTIFICATION
– Rear Panel –
Parts No.
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, RU,
 SP, SP6, A US
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
/B-Y: 0.7 Vp-p, 
75 ohms
P
R
/C
R
/R-Y: 0.7 Vp-p, 
75 ohms
80 MHz HD Pass Through
(only K780)
Gain levels
±6 dB, 1 dB step
Models of area code E51
With 10-kHz tuning scale: 530 – 1,610 kHz
4)
With 9-kHz tuning scale: 531 – 1,602 kHz
4)
Models of are code AR, MX
With 10-kHz tuning scale: 530 – 1,610 kHz
4)
You can change the AM tuning scale to 9 kHz or 
10 kHz. After tuning in any AM station, turn off 
the receiver. While holding down TUNING +, 
press ?/1. All preset stations will be erased when 
you change the tuning scale. To reset the scale to 
10 kHz (or 9 kHz), repeat the procedure.
General
Power requirements
Power consumption
Power consumption (during standby mode)
0.2 W
Dimensions (w/h/d) (Approx.)
430 
× 145 × 300 mm
including projecting parts 
and controls
Mass (Approx.)
7.5 kg
Design and specifications are subject to 
change without notice.
Area code
Power requirements
AEP, UK, RU
230 V AC, 50/60 Hz
AUS
240 V AC, 50 Hz
SP, SP6
230 – 240 V AC, 50/60 Hz
Area code
Power consumption
AEP, UK, AUS, 
190 W 
E51, MX, RU, AR
E51
120/220/240 V AC, 
50/60 Hz
M
AR
X
1
220-230V AC, 50/60 Hz
27 V AC, 60 Hz
SP, SP6
170 W
(K780)
7.8 kg
(K680)
Inputs (Analog)
Inputs (Digital)
Outputs (Analog)
SA-CD/CD, 
VIDEO 1, 2, DVD
Sensitivity: 800 mV
Impedance: 50 kohms
DVD (Coaxial)
Sensitivity: –
Impedance: 75 ohms
VIDEO 1
(VIDEO 1 is only K780)
(only K780)
, 2 
(Optical)
Sensitivity: –
Impedance: –
SUB WOOFER
Voltage: 2 V
Impedance: 1 kohm
• Abbreviation
AR
: Argentina model
AUS
: Australian model
E51
: Chilean and Peruvian models
MX
: Mexican model
RU
: Russian model
SP
: Singapore model
SP6
: Singapore and Malaysia models
Ver. 1.2
Model
Part No.
E51 model
2-661-458-2
[]
AR model
2-661-458-3
[]
MX model
2-661-458-4
[]
AEP, UK, RU models
2-662-452-0
[]
SP, SP6 models
2-662-452-1
[]
AUS model
2-662-452-2
[]
3
STR-K680/K780
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
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 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.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
TABLE OF CONTENTS
1.
GENERAL
...................................................................
4
2.
TEST MODE
............................................................... 11
3.
DIAGRAMS
3-1.
Block Diagram – MAIN Section – .................................. 14
3-2.
Block Diagram – DISPLAY/POWER Section – ............. 15
3-3.
Printed Wiring Board  – DIGITAL Board (Side A) – ...... 16
3-4.
Printed Wiring Board  – DIGITAL Board (Side B) – ...... 17
3-5.
Schematic Diagram  – DIGITAL Board (1/3) – .............. 18
3-6.
Schematic Diagram  – DIGITAL Board (2/3) – .............. 19
3-7.
Schematic Diagram  – DIGITAL Board (3/3) – .............. 20
3-8.
Printed Wiring Board  – MAIN Board – ......................... 21
3-9.
Schematic Diagram  – MAIN Board (1/3) – ................... 22
3-10. Schematic Diagram  – MAIN Board (2/3),
HEADPHONE Board – ................................................... 23
3-11. Schematic Diagram  – MAIN Board (3/3),
AC SELECT Board, ADCC Board,
STANDBY Board – ......................................................... 24
3-12. Printed Wiring Boards
– ADCC Board, HEADPHONE Board – ........................ 25
3-13. Printed Wiring Boards
– STANDBY Board, AC SELECT Board – .................... 26
3-14. Printed Wiring Board  – DISPLAY Board – ................... 27
3-15. Printed Wiring Boards
– TUNING Board, POWER Board – .............................. 28
3-16. Schematic Diagram  – DISPLAY Board,
TUNING Board, POWER Board – ................................. 29
3-17. Printed Wiring Board  – VIDEO Board – ........................ 30
3-18. Schematic Diagram  – VIDEO Board – .......................... 31
4.
EXPLODED VIEWS
4-1.
Front Panel Section ......................................................... 39
4-2.
Chassis Section ................................................................ 40
5.
ELECTRICAL PARTS LIST
.................................. 41
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.
4
STR-K680/K780
SECTION 1
GENERAL
This section is extracted
from instruction manual.
Front panel
Receiver
AUTO CAL MIC
PHONES
MEMORY
FM MODE
TUNING
+
PRESET  TUNING
VIDEO 1
VIDEO 2
DVD
SA-CD/CD
FM
AM
AMP MENU
ENTER
MASTER
VOLUME
INPUT MODE
+
DISPLAY
DIMMER
2CH
A.F.D.
MOVIE
MUSIC
?/1
1
2 3
4
6 7
8
9
5
qj
qk
ql
w;
qg
qh
qf
qaq;
qs
qd
Name
Function
A ?
/
1
Press to turn the receiver 
on or off. 
B
DISPLAY
Press to select information 
displayed on the display. 
C
DIMMER
Press to adjust the 
brightness of the display.
D
Remote sensor
Receives signals from 
remote commander.
E
Display
The current status of the 
selected component or a 
list of selectable items 
appears here. 
F
2CH
Press to select 2CH 
STEREO mode. 
G
A.F.D.
Press to select A.F.D. mode. 
Name
Function
H
MOVIE,
MUSIC
Press to select sound fields 
(MOVIE, MUSIC). 
I
MASTER 
VOLUME
Turn to adjust the volume 
level of all speakers at the 
same time. 
J
ENTER
Press to store a station or 
enter the selection when 
selecting the settings. 
K
INPUT MODE
Press to select the input 
mode when the same 
components are connected 
to both digital and analog 
jacks. 
L I
/
i
/
U
/
u
After pressing AMP 
MENU (M), press I or i 
and U or u to select the 
settings.
M
AMP MENU
Press to display the menu 
of the receiver.
N
Input buttons
Press one of the buttons to 
select the component you 
want to use. 
O
PRESET 
TUNING +/–
Press to select a preset  
station.
P
TUNING +/–
Press to scan a station.
Q
MEMORY
Press to store a station.
R
FM MODE
Press to select FM 
monaural or stereo 
reception.
S
PHONES jack
Connects to a headphone.  
T
AUTO CAL MIC 
jack
Connects to the supplied 
ECM-AC2 optimizer 
microphone for the Auto 
Calibration function. 
Page of 52
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Here you can read online and download Sony HT-DDW680 / HT-DDW780 / HTP-36DW / STR-K680 / STR-K780 Service Manual in PDF. HT-DDW680 / HT-DDW780 / HTP-36DW / STR-K680 / STR-K780 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HT-DDW680 / HT-DDW780 / HTP-36DW / STR-K680 / STR-K780 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.