Sony STR-K790 Support Question
Sony STR-K790 Support Question
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Question posted by Anonymous-92743 on January 6th, 2013
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Related Sony STR-K790 Manual Pages
Service Manual - Page 1
...AC, 50/60 Hz
- SERVICE MANUAL
Ver. 1.1 2007.03
STR-K790
US Model Canadian Model
AEP Model UK Model
• STR-K790 is the tuner and the amplifier section in any AM station,...AC, 50 Hz
2)Reference power output for front, center, surround speakers and sub woofer. SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION: (Models of DTS, Inc.
While holding down...
Service Manual - Page 2
...not to let solder bridges occur such as on chip component replacement • Never reuse a disconnected chip component. • Notice that is suitable. A.
ATTENTION ...the manufacturers' instructions to check AC leakage.
UNLEADED SOLDER Boards requiring use of three methods.
1.
STR-K790
Power consumption
Area code
Power consumption
US
210 W
Canadian
290 VA
AEP, UK
220 W
...
Service Manual - Page 3
... 25 4-13. Schematic Diagram - Front Panel Section 42 5-2.
Printed Wiring Board - Schematic Diagram -
MAIN Board (4/4 30 4-18. POWER Board, DCAC Board,
HEADPHONE Board 33 4-21. STR-K790
About area codes
The area code of the receiver you purchased is shown on the lower right portion of area code AA only". ELECTRICAL ADJUSTMENT...
Service Manual - Page 4
... the display. The current status of the selected component or a list of all speakers at the same time. q;
9
Name
H MASTER VOLUME
I INPUT SELECTOR
J Remote sensor
K MOVIE, MUSIC
L A.F.D.
mode.
To connect a portable audio such as MP3 player, etc..
4 STR-K790
Receiver
Front panel
1 234
?/1
VIDEO 1 IN/ PORTABLE AUDIO IN/
AUTO CAL MIC
DIMMER
SLEEP
2CH
A.F.D.
Press...
Service Manual - Page 5
... signal is decoding DTS signals. Lights up when audio signal is selected.
PL/
;
Lights up when... Center (monaural) Surround Left Surround Right Surround (monaural or the surround components obtained by Pro Logic processing) Example: Recording format (Front/ Surround): ...., is selected. AUTO
SW LFE
LCR
SL
SR
5 STR-K790
About the indicators on presetting radio stations. PLII ; PL...
Service Manual - Page 6
STR-K790
Rear panel US, Canadian models
12
3
4
DIGITAL OPTICAL
VIDEO 2/ BD IN COAXIAL DVD IN
ANTENNA AM
L
R AUDIO IN AUDIO IN AUDIO IN SA-CD/CD TV SAT
RL
SUB
RL
WOOFER...the speakers and sub woofer*.
* The numbers of loud
jack
sound.
AEP, UK models
12
C AUDIO INPUT section
AUDIO IN Connects to a TV or projector.
The
COAXIAL jack
provides a better
COAXIAL IN quality of ...
Service Manual - Page 7
...TV ?/1 and TV (O) at
(on/standby) the same time to turn the receiver on or off the Sony audio/video components that the remote is assigned to their factory settings. B ?/1 (on/standby)
Press to turn on . C Input... and other kinds of the buttons to direct sunlight
or lighting apparatuses. STR-K790
Inserting batteries into the remote
Insert two R6 (size-AA) batteries in tuner
7
Service Manual - Page 8
... audio settings during recording), or multiple items on the TV screen. K MUTING
Press to store a station. Press MUTING and TV (O)
at the same time to activate the buttons with components in...the same time to stop playback of the CD player or DVD player (multidisc changer only). STR-K790
Name
Function
D 2CH
Press to adjust the volume
+*/-
and TV (O) at the same time ...
Service Manual - Page 9
...select channel numbers of the VCR or satellite tuner. Therefore, depending on the component, the above explanation is intended to serve as references when operating the receiver.... VOL +, and H buttons have tactile dots. Press to select channel numbers of the Digital CATV terminal.
STR-K790
Name
Q RETURN/ EXIT O
R V/v/B/b
S DISPLAY
T -/->10/x CLEAR
Function
Press to return to the...
Service Manual - Page 10
...
?/1 button to turn off the main power. 2. When this test is activated, all buttons are tested. PROTECTOR AUTO OFF Procedure:
1. " PROT. MHz
RDS ST MONO
3. STR-K790
SECTION 2 TEST MODE
SOUND FIELD CLEAR MODE The preset sound field is cleared when this mode is performed. "VACS OFF" appears. (8 second)
10
Service Manual - Page 11
... DSP Data Line Checking 2. "DCAC[]FTM" appears.
Turn MASTER VOLUME jog, there will be test tone sound output from front left speaker of test tone)
STR-K790
11 "AD[]-[]xxx" xxx = 0 to start , below display will change accordingly. DCAC FACTORY TEST MODE DCAC Factory Test mode have two stages:
1. DCAC board Checking...
Service Manual - Page 13
... omitted.
• Circuit Boards Location STANDBY board
POWER board DCAC board
HEADPHONE board DISPLAY board
STR-K790
HDMI SW board (AEP,UK) HDMI BRIDGE board (AEP,UK) DIGITAL board
MAIN board
•...tantalums. • All resistors are indicated.
• Indication of transistor.
Note: The components identified by mark 0 or dotted line with mark 0 are taken with respect to waveforms. &#...
Service Manual - Page 15
... 6-16Ω
TM602(2/2)
CENTER
TM604(2/2)
SUB WOOFER
IC850
2
PROTECT DET
7
POWER AMP -B
+B
-B
FL101 -20V
TUNER +10V RELAY +B AUDIO +7V
AUDIO +5V
AUDIO -7V
Q851,852 -B
SWITCH
D811
Q801 -20V REG
IC1902
3
+10V REG
1
IC821
1
+7V REG
3
IC1001
3
+5V REG
1...
D915
T900(AEP,UK) T902(US,CND)
Q901
RELAY DRIVE
RY901
STR-K790
15
15 4-2. DISPLAY/POWER SECTION -
BLOCK DIAGRAM -
Service Manual - Page 25
... Q852 Q881 Q882 Q883
Location
G-4 G-3 C-6 G-5 H-6 H-5 H-6 G-6 G-5 F-14 F-11 E-9 E-12 F-12 F-12
STR-K790
25
25 No.
Location
D883 D884
F-12 F-12
IC400 D-4 IC501 E-6 IC502 E-5 IC601 E-8 IC701 F-4 IC821 C-6 IC822 ...2
3
4
5
6
7
8
9
10
11
12
13
14
15
SA-CD/CD AUDIO IN
J400 TV AUDIO IN
SAT AUDIO IN
MAIN BOARD
AEP,UK
JW853
CC54
C452 C402
R454
TP1
DCAC
BOARD
B CN2001 (7pin-...
Service Manual - Page 27
SCHEMATIC DIAGRAM - MAIN BOARD (1/4) - • See page 36 for IC Block Diagram. 4-14.
STR-K790
DCAC
B BOARD
CN2001 (7pin to 9pin)
(Page 34)
J400
SAT AUDIO IN
CNP733 3P
J400 6P
TV AUDIO IN SA-CD/CD AUDIO IN
CC01 100P
R401 1k
CC51 100P
CC02 100P CC52 100P
CC03 100P CC53 100P
CC04 100P CC54...
Service Manual - Page 33
PRINTED WIRING BOARDS - STR-K790
1
2
3
A POWER BOARD
B
C
S152
D
JW123 JW122 JW121
E
F
G
JW124 JW126 JW125
4
5
6
7
8
9
CNP152
1
3
JW157
S114 DIMMER
R135 S115
R136
S116
SLEEP
2CH
K
DISPLAY BOARD CN101 (Page 31)
10
11
12
13
14
15
DCAC BOARD
J2000 VIDEO 1 IN/ PORTABLE AUDIO IN/ AUTO CAL MIC
JW2013
D2013 R2000
JW2004 Q2002
Q2001
C2001 C2002...
Service Manual - Page 39
Analog power supply (+3.3V) I Vacs control input
STR-K790 39 Ground terminal I RDS signal detect input (AEP, UK only) I MODEL select input I Analog reference voltage ...SDA SCL ENC_A ENC_B
NC NC AVCC AVRH AVSS ADCC A/D1 A/D2 VERSION VSS TUNER SD MODEL VAX CTRL
I/O
Description
I Audio data signal input from DIR
I GP9 signal input from DSP
O BST signal output to DSP
O HCS signal output to ...
Service Manual - Page 42
STR-K790
SECTION 5 EXPLODED VIEWS
NOTE: • -XX and -X mean standardized parts, so they are critical for routine...remplacer que par une pièce portant le numéro spécifié. No.
1 2 3 4 4
Part No.
FRONT PANEL SECTION
The components identified by mark 0 or dotted line with RV102
3
#1
#1
7
8
5
7
chassis section
6
cb
a 9
Ref. Description
2-661-142-22 VOLUME ...
Service Manual - Page 44
... Ref.
The components identified by reference number, please include the board name.
Les composants identifiés par une marque 0 sont critiques pour la sécurité. Part No. STR-K790
DCAC DIGITAL
SECTION...167-88 IC NJM4565D
< JACK >
J2000 1-820-056-11 SMALL TYPE JACK (VIDEO 1 IN/PORTABLE AUDIO IN/AUTO CAL MIC)
< TRANSISTOR >
R2018 1-249-418-11 CARBON
1.2K
5% 1/4W
R2019 ...
Service Manual - Page 53
STR-K790
MAIN POWER
Ref. No. Description
1/4W
R858 1-215-890-11 METAL OXIDE 470
1/4W
1/4W
R881 1-247-871-...
5%
560
5%
0 R758 0 R759 0 R760
R761 0 R762
1-249-405-11 CARBON
100
5%
1-249-405-11 CARBON
100
5%
1-234-182-11 ENCAPSULATED COMPONENT
1-247-847-91 CARBON
4.7K
5%
1-240-855-81 CARBON
6.2K
5%
R763 R764 R765 R766 R770
1-249-419-11 CARBON 1-249-431-11 CARBON 1-249-...
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