DOWNLOAD Sony HT-DDW995 / STR-K995 Service Manual ↓ Size: 4.42 MB | Pages: 74 in PDF or view online for FREE

Model
HT-DDW995 STR-K995
Pages
74
Size
4.42 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
ht-ddw995-str-k995.pdf
Date

Sony HT-DDW995 / STR-K995 Service Manual ▷ View online

2
STR-K995
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.
SAFETY  CHECK-OUT
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.
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
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)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
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
General
Power requirements
Power output (DIGITAL MEDIA PORT)
DC OUT:
5 V, 700 mA
Power consumption
Power consumption (during standby mode)
0.3 W
Area code
Power requirements
US
120 V AC, 60 Hz
Area code
Power consumption
US
200 W
Dimensions (width/height/depth) (Approx.)
430 
× 157.5 × 310 mm 
(17 
× 6 1/4 × 12 1/4 inches) 
including projecting parts 
and controls
Mass (Approx.)
7.8 kg (17 lb 4 oz)
Design and specifications are subject to 
change without notice.
3
STR-K995
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.
ELECTRICAL ADJUSTMENT
............................. 13
4.
DIAGRAMS
................................................................. 14
4-1.
Block Diagram – MAIN Section – .................................. 15
4-2.
Block Diagram – DISPLAY/POWER Section – ............. 16
4-3.
Block Diagram – HDMI Section – .................................. 17
4-4.
Printed Wiring Board  – DIGITAL Board (Side A) – ...... 18
4-5.
Printed Wiring Board  – DIGITAL Board (Side B) – ...... 19
4-6.
Schematic Diagram  – DIGITAL Board (1/5) – .............. 20
4-7.
Schematic Diagram  – DIGITAL Board (2/5) – .............. 21
4-8.
Schematic Diagram  – DIGITAL Board (3/5) – .............. 22
4-9.
Schematic Diagram  – DIGITAL Board (4/5) – .............. 23
4-10. Schematic Diagram  – DIGITAL Board (5/5) – .............. 24
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
– DISPLAY Board, POWER KEY Board – .................... 30
4-17. Schematic Diagram
– DISPLAY Board, POWER KEY Board – .................... 31
4-18. Printed Wiring Boards
– STANDBY Board, DCDC Board – .............................. 32
4-19. Schematic Diagram
– STANDBY Board, DCDC Board – .............................. 33
4-20. Printed Wiring Boards
– DCAC Board, VIDEO3 Board – .................................. 34
4-21. Schematic Diagram
– DCAC Board, VIDEO3 Board – .................................. 35
4-22. Printed Wiring Boards
– VIDEO Board, HEADPHONE Board – ....................... 36
4-23. Schematic Diagram
– VIDEO Board, HEADPHONE Board – ....................... 37
4-24. Printed Wiring Board  – HDMI RE Board – ................... 38
4-25. Schematic Diagram  – HDMI RE Board (1/2) – ............. 39
4-26. Schematic Diagram  – HDMI RE Board (2/2) – ............. 40
5.
EXPLODED VIEWS
5-1.
Front Panel Section ......................................................... 56
5-2.
Chassis Section ................................................................ 57
6.
ELECTRICAL PARTS LIST
.................................. 58
About area codes
Th
Moreover, it is possible to distinguish the model
by Part No..
e 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”.
ERS
ONT A
R
SURROUND
L
L
R
CENTER
Area code
Part No.
BACK PANEL
Model
Part No.
US Model
2-897-800-9
4
STR-K995
SECTION 1
GENERAL
This section is extracted
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
MULTI CHANNEL DECODING
3
5
9
q;
qa
qk
qd
qf
qg
qh
qj
1
2
8
6
7
4
qs
Name
Function
A
 
?
/
1
 
(on/standby)
Press to turn the receiver on 
or off (page 28, 37, 38, 54, 
77).
B
SPEAKERS 
(OFF/A/B/A+B)
Press to select the front 
speaker system (page 29).
C
Display
The current status of the 
selected component or a 
list of selectable items 
appears here (page 7). 
D
MULTI 
CHANNEL 
DECODING 
lamp
Lights up when multi 
channel audio is decoded 
(page 38). 
E
Remote sensor
Receives signals from 
remote commander.
F
DISPLAY
Press to select information 
displayed on the display 
(page 64).
Name
Function
G
INPUT MODE
Press to select the input 
mode when the same 
components are connected 
to both digital and analog 
jacks (page 59).
H
MASTER 
VOLUME
Turn to adjust the volume 
level of all speakers at the 
same time (page 34, 35, 37, 
38).
I
MUTING
Press to mute the sound 
(page 35).
J
AUTO CAL
Press to activate the Auto 
Calibration function 
 
(page 30).
K
INPUT 
SELECTOR
Turn to select the input 
source to playback (page 
35, 37, 38, 55, 58, 59, 61, 
63, 65).
L
2CH
Press to select a sound field 
(page 49, 51, 53).
A.F.D.
MOVIE
MUSIC
M
TUNING +/–
Press to scan a station 
(page 55, 58).
N
TUNING MODE
Press to select the tuning 
mode (page 55, 77).
O
MEMORY/
ENTER
Press to store a station or 
enter the selection when 
selecting the settings (page 
28).
P
VIDEO 3 IN/
PORTABLE AV 
IN jacks
Connect to a portable 
audio/video component 
such as a camcorder or 
video game (page 26, 35).
Q
AUTO CAL MIC 
jack
Connects to the supplied 
optimizer microphone for 
the Auto Calibration 
function (page 30).
R
PHONES jack
Connects to headphones 
(page 74).
5
STR-K995
About the indicators on the display
SW
LFE
SP A
SP B
L
C
SL
S
;
D
;
PL
;
PL II
OPT
DTS
MEMORY
ST
MONO
D.RANGE
R
SR
COAX
HDMI
1
2
3
4
6
7
9
8
5
q;
qa
qf
qs
qd
Name
Function
A
SW
Lights up when the audio signal 
is output from the SUB 
WOOFER jack.
B
LFE
Lights up when the disc being 
played back contains an LFE 
(Low Frequency Effect) 
channel and the LFE channel 
signal is actually being 
reproduced.
C
SP A/SP B
Lights up according to the 
speaker system used. However, 
these indicators do not light up 
if the speaker output is turned 
off or if headphones are 
connected.
D ;
D
Lights up when Dolby Digital 
signals are input.
Note
When playing a Dolby Digital 
format disc, be sure that you 
have made digital connections 
and that INPUT MODE is not 
set to “ANALOG” (page 59).
E ;
PL/
 
;
PL II
“; PL” lights up when the 
receiver applies Pro Logic 
processing to 2 channel signals 
in order to output the center and 
surround channel signals. 
 
“; PL II” lights up when the 
Pro Logic II Movie or Music 
decoder is activated.
Name
Function
F
OPT
Lights up when INPUT MODE 
is set to “AUTO IN” and the 
source signal is a digital signal 
being input through the 
OPTICAL jack, or when 
INPUT MODE is set to “OPT 
IN” (page 59).
G
DTS
Lights up when DTS signals are 
input. 
Note
When playing a DTS format 
disc, be sure that you have made 
digital connections and that 
INPUT MODE is not set to 
“ANALOG” (page 59).
H
MEMORY
Lights up when a memory 
function, such as Preset 
Memory (page 57), etc., is 
activated.
I
Tuner 
indicators
Lights up when using the 
receiver to tune in radio stations 
(page 54), etc.
J
Preset 
station 
indicators
Lights up when using the 
receiver to tune in radio stations 
you have preset. For details on 
presetting radio stations, see 
page 56.
K
D.RANGE
Lights up when dynamic range 
compression is activated (page 
42).
L
COAX
Lights up when INPUT MODE 
is set to “AUTO IN” and the 
source signal is a digital signal 
being input through the 
COAXIAL jack, or when 
INPUT MODE is set to “COAX 
IN” (page 59).
M
HDMI
Lights up when the receiver 
recognizes a component 
connected via a HDMI IN jack 
(page 20).
N
Playback 
channel 
indicators
 
 
 
 
L
 
R
 
C
 
SL
 
SR
 
S
The letters (L, C, R, etc.) 
indicate the channels being 
played back. The boxes around 
the letters vary to show how the 
receiver downmixes the source 
sound.
Front Left
Front Right
Center (monaural)
Surround Left
Surround Right
Surround (monaural or the 
surround components obtained 
by Pro Logic processing)
Example:
Recording format (Front/
Surround): 3/2.1
Sound Field: A.F.D. AUTO
L C R 
SL SR 
SW
Page of 74
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Sony HT-DDW995 / STR-K995 Service Manual ▷ Download

  • DOWNLOAD Sony HT-DDW995 / STR-K995 Service Manual ↓ Size: 4.42 MB | Pages: 74 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony HT-DDW995 / STR-K995 in PDF for free, which will help you to disassemble, recover, fix and repair Sony HT-DDW995 / STR-K995 Audio. Information contained in Sony HT-DDW995 / STR-K995 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.