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US Model

Canadian Model

2006A1678-1
© 2006.01

• STR-K700 is the tuner and the amplifier

section in HT-DDW700.

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.

With 6 ohm loads, both channels driven, from 
120 – 20,000 Hz; rated 85 watts per channel 
minimum RMS power, with no more than 
0.7% total harmonic distortion from 250 
milliwatts to rated output.

Power Output

1)

Models of area code US
(6 ohms 1 kHz, THD 10%)
FRONT

2)

: 133 

W/ch

CENTER

2)

: 133 

W

SUR

2)

: 133 

W/ch

(6 ohms 100 Hz, THD 10%)
SUB WOOFER

2)

: 

135 W

Models of area code Canadian
(6 ohms 1 kHz, THD 0.7%)
FRONT

2)

: 85 

W/ch

CENTER

2)

: 85 

W

SUR

2)

: 85 W/ch

(6 ohms 100 Hz, THD 0.7%)
SUB WOOFER

2)

: 85 

W

(6 ohms 1 kHz, THD 10%)

FRONT

2)

: 133 

W/ch

CENTER

2)

: 133 

W

SUR

2)

: 133 

W/ch

(6 ohms 100 Hz, THD 10%)
SUB WOOFER

2)

: 135 

W

1) Measured under the following conditions:

2) Depending on the sound field settings and the 

source, there may be no sound output.

120 V AC, 60 Hz

Inputs (Analog)

Inputs (Digital)

Reproduction frequency range:

28 – 20,000 Hz

Tone

Tuning range

87.5 - 108.0 MHz

Antenna

FM wire antenna

Antenna terminals

75 ohms, unbalanced

Intermediate frequency

10.7 MHz

Tuning range
With 10-kHz tuning scale: 530 – 1,710 kHz

3)

With 9-kHz tuning scale: 531 – 1,710 kHz

3)

3) 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 DIMMER, 
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.

SA-CD/CD, DVD, 
VIDEO 1, 2

Sensitivity: 800 mV
Impedance: 50 k ohms

DVD (Coaxial)

Sensitivity: –
Impedance: 75 ohms

VIDEO 2 (Optical)

Sensitivity: –
Impedance: –

Gain levels

±6 dB, 1 dB step

— Continued on next page —

2

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

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)

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.

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

+

+

Area code

US model

2-661-458-0

[]

Canadian model

2-661-458-1

[]

Parts No.

Power requirements

Power consumption

Power consumption (during standby mode)

0.2 W

Dimensions (w/h/d) (Approx.)

17 

× 5 6/8 × 12 1/8 inches 

including projecting parts 
and controls

Mass (Approx.)

16 lb 9 oz

120 V AC, 60 Hz

US

210  W

Canadian

290 VA

Design and specifications are subject to 
change without notice.

3

...................................................................

4

............................................................... 10

3-1.

Block Diagram – MAIN Section – .................................. 12

3-2.

Block Diagram – DISPLAY/POWER Section – ............. 13

3-3.

Printed Wiring Board  – DIGITAL Board (Side A) – ...... 14

3-4.

Printed Wiring Board  – DIGITAL Board (Side B) – ...... 15

3-5.

Schematic Diagram  – DIGITAL Board (1/3) – .............. 16

3-6.

Schematic Diagram  – DIGITAL Board (2/3) – .............. 17

3-7.

Schematic Diagram  – DIGITAL Board (3/3) – .............. 18

3-8.

Printed Wiring Board  – MAIN Board – ......................... 19

3-9.

Schematic Diagram  – MAIN Board (1/3) – ................... 20

3-10. Schematic Diagram  – MAIN Board (2/3),

HEADPHONE Board – ................................................... 21

3-11. Schematic Diagram  – MAIN Board (3/3), ADCC Board,

STANDBY Board – ......................................................... 22

3-12. Printed Wiring Boards

– ADCC Board, HEADPHONE Board – ........................ 23

3-13. Printed Wiring Board  – STANDBY Board – ................. 24
3-14. Printed Wiring Boards

– DISPLAY Board, POWER Board – ............................. 25

3-15. Schematic Diagram

– DISPLAY Board, POWER Board – ............................. 26

4-1.

Front Panel Section ......................................................... 34

4-2.

Chassis Section ................................................................ 35

.................................. 36

After correcting the original service problem, perform the following
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.

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-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)

1.5 k

Ω

0.15 

µ

F

AC
voltmeter
(0.75 V)

To Exposed Metal
Parts on Set

Earth Ground

0

0

0

4

This section is extracted
from instruction manual.

?/1

2

6

7

8

qf

qd

3 4

5

1

qs

9

0

qa

A ?

1

Press to turn the receiver 
on or off. 

B

Press to adjust the 
brightness of the display.

C

Press to activate the Sleep 
Timer function and the 
duration which the 
receiver turns off 
automatically.

D

Press to select 2CH 
STEREO mode.

E

The current status of the 
selected component or a 
list of selectable items 
appears here. 

F

Press to select information 
displayed on the display. 

G

Press to select the input 
mode when the same 
components are connected 
to both digital and analog 
jacks.

H

Turn to adjust the volume 
level of all speakers at the 
same time. 

I

Turn to select the input 
source to playback. 

J

Receives signals from 
remote commander.

K

Press to select sound fields 
(MOVIE, MUSIC).

L

Press to select A.F.D. 
mode.

M

Connects to a headphone. 

N

Connects to the supplied 
ECM-AC2 optimizer 
microphone for the Auto 
Calibration function.