Sony STR-K790 Support Question
Sony STR-K790 Support Question
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Question posted by Mowergmjm on August 30th, 2019
Owners Manual For Str-k790
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Answer #1: Posted by Odin on August 31st, 2019 7:25 AM
Odin
Member since:
April 10th, 2010 Points: 41,236,680
Member since:
April 10th, 2010 Points: 41,236,680
There are several at https://www.manualslib.com/s/sony+sto-k790.html.
Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.
Related Sony STR-K790 Manual Pages
Service Manual - Page 1
...
US, Canadian
120 V AC, 60 Hz
AEP, UK
230 V AC, 50/60 Hz
- SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION: (Models of DTS, Inc. Amplifier section Power Output1) Stereo... in HT-DDW790 and HT-DDW795.
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...
Service Manual - Page 2
STR-K790
Power consumption
Area code
Power consumption
US
210 W
Canadian
290 VA
AEP, UK
220 W
Power consumption (during...that is applied for a slightly longer time. A battery-operated AC milliammeter. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. A commercial leakage tester, such as described below. ...
Service Manual - Page 3
...-6[]
TABLE OF CONTENTS
1. DIAGRAMS 13 4-1. Block Diagram - Schematic Diagram - DIGITAL Board (3/5 20 4-8. Schematic Diagram - Printed Wiring Board - STANDBY Board 26 4-14. Schematic Diagram - Schematic Diagram - 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". MODEL IDENTIFICATION...
Service Manual - Page 4
...to select 2CH STEREO mode.
M PHONES jack N VIDEO 1 IN/
PORTABLE AUDIO IN/ AUTO CAL MIC jack
Function
Turn to select information displayed on or...at the same time. Press to playback. STR-K790
Receiver
Front panel
1 234
?/1
VIDEO 1 IN/ PORTABLE AUDIO IN/
AUTO CAL MIC
DIMMER
SLEEP
2CH... receiver turns off . To connect a portable audio such as MP3 player, etc..
4 Press to a headphone.
...
Service Manual - Page 5
...audio signal is activated. Lights up when the disc being played back.
Lights up when VIDEO 2 input is actually being reproduced. However, "UNLOCK" appears on the display if no digital signal is decoding Dolby Digital signals. STR-K790...Surround Right Surround (monaural or the surround components obtained by Pro Logic processing) Example: Recording format (Front/ Surround): 3/2.1 Sound Field:...
Service Manual - Page 6
... a projector.
B ANTENNA section
FM ANTENNA jack
AM ANTENNA terminals
Connects to a DVD
IN jack
player, etc.
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 SURROUND
SPEAKERS
RL
RL CENTER FRONT...
Service Manual - Page 7
... a new battery with new ones.
Button
Assigned Sony component
VIDEO 1 VCR (VTR mode 3)
VIDEO 2 VCR (VTR mode 2)
VIDEO 3 Not assigned
DVD
DVD player
SAT
Satellite tuner
TV
Television
SA-CD/CD Super Audio CD/CD player
TUNER Built-in the RM-AAU013 remote commander. STR-K790
Inserting batteries into the remote
Insert two R6...
Service Manual - Page 8
...
at the same time to activate the buttons with components in the forward/backward direction of the DVD player or...Press to store a station.
MEMORY Press to scan a station. audio settings during recording), or multiple items on the TV screen. Press...and TV (O) at the same time to select preset TV channels. STR-K790
Name
Function
D 2CH
Press to select A.F.D.
Press to select 2CH ...
Service Manual - Page 9
...at the same time to select TV information displayed on the TV screen. Therefore, depending on the component, the above operation may not be possible or may not work depending on the model.
•... TV's menu while the menu is not available for DVD MENU or MENU. Press to select the settings.
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
..., press the power ?/1 button to turn on the main power.
2. While depressing the MOVIE button, press the power
?/1 button to turn on the main power. 3. STR-K790
SECTION 2 TEST MODE
SOUND FIELD CLEAR MODE The preset sound field is cleared when this test is activated, all segments turn on at the same...
Service Manual - Page 11
... , below display will show:
"DCAC[][][]x" x = 1, 2, 3 If there is error happen, below display will be test tone sound output from front left speaker of test tone)
STR-K790
11 DCAC DSP Data Line Checking After press the DIMMER , DCAC Factory test mode will start DCAC factory test mode.
1.
DCAC board Checking
Start
DSP...
Service Manual - Page 12
... use 75 ohm "coaxial cable" to FM tuner function and scan the input FM signal with automatic scanning.
4. You cannot use video cable for checking.
STR-K790
Ver. 1.1
TUNER SECTION [FM Auto Stop Check]
SET
SECTION 3 ELECTRICAL ADJUSTMENT
generator OUT (75 Ω)
Procedure: 1. Turn the power on. 2.
Service Manual - Page 13
... are 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
•...1 V/DIV, 20 ns/DIV
3 IC1301 ws (XIN)
4.2 Vp-p
STR-K790
81.4 ns 1 V/DIV, 40 ns/DIV
4.2 Vp-p
13
13 Note: The components identified by mark 0 or dotted line with mark 0 are critical for ...
Service Manual - Page 15
BLOCK DIAGRAM - DISPLAY/POWER SECTION - STR-K790
• R-CH is omitted due to same as L-CH. • Signal Path
: FM
L
... 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...
Service Manual - Page 16
...D-3 IC1502 C-4 IC1503 D-5 IC1905 C-4
16
16 DIGITAL BOARD (SIDE A) - • See page 13 for Circuit Boards Location.
:Uses unleaded solder.
1
2
3
4
5
6
7
8
A
DIGITAL BOARD (SIDE A)
R1943 C1913
B C D E
STR-K790
R1096
FB1350
R1318 C1315 R1321
R1253
FB1306
IC1301
R1313 R1312
R1311
R1555
C1031
FB1310
C1301
R1557
RB1500
C1302 R1301 C1304 R1304
D1302
JR1005 R1303
R1325...
Service Manual - Page 17
...page 13 for FLASH PROGRAMMING
• Semiconductor Location Ref.
Location D1003 D-3 D1004 D-3 D1107 C-6 D1108 C-6 D1110 C-6 D1111 C-7 D1501 C-3 D1502 C-3 D1503 D-3
IC1001 E-3 IC1031 B-7 IC1351 C-2 IC1901 B-7 IC1902 B-5 IC1904 B-6
STR-K790
DIGITAL BOARD (SIDE B)
STANDBY BOARD
C
CNP801
(Page 26)
AM
TUNER
FM 75 COAXIAL
AEP,UK
HDMI BRIDGE
A BOARD CNS199 (Page 23)
HS1903
HS1901
CL026...
Service Manual - Page 21
STR-K790
1
2
3
4
5
6
7
8
9
10
11
MAIN BOARD
STANDBY
(3/4)
BOARD
A
CNP504 D
(Page 29)
CNP801 C
(Page 28)
1 +R2 2 STOP 3 STDBY GND 4 +9V (STDBY) 5 PW_RY 6 +R4 7 R4 GND
H/P_RY H/P CTRL C/REAR/... 95 96 98
a1 a2
a5 a4 a6 a3 a7 a8 b8 a9 b1 b2 b3
b5 b4 b6 b7
14
DIGITAL BOARD (5/5)
(Page 22)
STR-K790
21
21 4-8. SCHEMATIC DIAGRAM -
DIGITAL BOARD (4/5) -
Service Manual - Page 23
IC5001 IC5002 IC5003 IC5004 IC5005 IC5006
Location
C-3 C-4 C-4 B-4 B-4 C-2
1
F
STR-K790
B199
1-873-511-
23
23
STR-K790 No. PRINTED WIRING BOARDS -
4-10. HDMI SW BOARD, HDMI BRIDGE BOARD (AEP, UK only) - • See page 13 for Circuit Boards Location.
:Uses unleaded solder.
1
2
3
4
5
6
7
8
...
Service Manual - Page 24
... SW BOARD, HDMI BRIDGE BOARD (AEP, UK only) - • See page 37 for IC Block Diagrams.
AEP,UK VIDEO 2/BD IN
STR-K790
HDMI SW BOARD
R5047 0
R5068 100k
TP5016
R5016 0
R5017 0
CN5001 19P
CN5002 19P R5048 0
R5069 100k
R5018 1k
R5019 0 R5020 0 ...) PRE(HDMI) CTL(HDMI) COMP_S2 COMP_S1 V_SW1 V_SW2 V_SW3 V_SW4
A
DIGITAL BOARD (1/5) CNS509 (Page 18)
24
24 SCHEMATIC DIAGRAM - STR-K790
4-11.
Service Manual - Page 25
...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-...Q851 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 ...
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