View Sony HT-DDW995 / STR-K995 Service Manual online
Published by Sony Techno Create Corporation
the DTS** Digital Surround System.
* Manufactured under license from Dolby Laboratories.
120 – 20,000 Hz; rated 90 watts per channel
minimum RMS power, with no more than 1%
total harmonic distortion from 250 milliwatts
to rated output.
Stereo mode (rated) (6 ohms 1 kHz
CENTER: 140 W
SURROUND: 140 W
surround speakers. Depending on the sound field
settings and the source, there may be no sound
10 kHz. After tuning in any AM station, turn off
the receiver. While holding down TUNING
MODE, 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
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
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.
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.
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
Parts on Set
80 MHz HD Pass Through
change without notice.
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
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
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
also be added to ordinary solder.
4-11. Printed Wiring Board – MAIN Board – ......................... 25
4-12. Schematic Diagram – MAIN Board (1/4) – ................... 26
4-13. Schematic Diagram – MAIN Board (2/4) – ................... 27
4-14. Schematic Diagram – MAIN Board (3/4) – ................... 28
4-15. Schematic Diagram – MAIN Board (4/4) – ................... 29
4-16. Printed Wiring Boards
4-25. Schematic Diagram – HDMI RE Board (1/2) – ............. 39
4-26. Schematic Diagram – HDMI RE Board (2/2) – ............. 40
by Part No..
(see the illustration below).
code, are clearly indicated in the text, for example,
“Models of area code AA only”.
from instruction manual.
or off (page 28, 37, 38, 54,
speaker system (page 29).
selected component or a
list of selectable items
appears here (page 7).
channel audio is decoded
displayed on the display
mode when the same
components are connected
to both digital and analog
jacks (page 59).
level of all speakers at the
same time (page 34, 35, 37,
source to playback (page
35, 37, 38, 55, 58, 59, 61,
(page 49, 51, 53).
(page 55, 58).
mode (page 55, 77).
enter the selection when
selecting the settings (page
such as a camcorder or
video game (page 26, 35).
optimizer microphone for
the Auto Calibration
function (page 30).