Sony STR-K790 Support Question
Sony STR-K790 Support Question
Find answers below for this question about Sony STR-K790 - Lifier.Need a Sony STR-K790 manual? We have 1 online manual for this item!
Question posted by mtaynot6 on August 30th, 2014
Can I Only Have Two Speakers On My Str-k790
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Related Sony STR-K790 Manual Pages
Service Manual - Page 1
...STEREO/FM-AM RECEIVER
9-887-542-02
2007C16-1 © 2007.03
Sony Corporation
Home Audio Division Published by Sony Techno Create Corporation
rated 85 watts per channel Surround mode2) (reference)... output for front, center, surround speakers and sub woofer. 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 ...
Service Manual - Page 2
...chassis, must have a 2 V AC range are suitable. (See Fig.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS .... Follow the manufacturers' instructions to use caution not to the solder joint for this job.
3. STR-K790
Power consumption
Area code
Power consumption
US
210 W
Canadian
290 VA
AEP, UK
220 W
Power consumption...
Service Manual - Page 3
STR-K790
About area codes
The area code of the receiver you purchased is shown on the lower right portion of .... HDMI SW Board,
HDMI BRIDGE Board (AEP, UK only 24 4-12. MAIN Board (2/4),
STANDBY Board 28 4-16. RL
RL CENTER FRONT SPEAKERS
Area code
Any differences in operation, according to the area code, are clearly indicated in the text, for example, "Models of the rear panel...
Service Manual - Page 4
... selected component or a list of all speakers at the same time.
Connects to the supplied optimizer microphone for the Auto Calibration function.
- MOVIE
MUSIC
PHONES
SECTION 1 GENERAL
5
67
8
DISPLAY
AUTO CAL
INPUT SELECTOR
MASTER VOLUME
qf qd qs qa
Name
A ?/1 (on or off automatically. STR-K790
Receiver
Front panel
1 234
?/1
VIDEO 1 IN/ PORTABLE AUDIO IN...
Service Manual - Page 5
... 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. Lights up when the Pro Logic II Movie/Music decoder is output from the SUB WOOFER jack. PLII" lights up when the receiver is activated.
STR-K790
About the indicators on presetting radio stations...
Service Manual - Page 6
... to the AM loop antenna supplied with this receiver.
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 SPEAKERS
A DIGITAL INPUT section
OPTICAL Connects to a DVD player...
Service Manual - Page 7
... audio/video components that the remote is assigned to turn the TV
on or off . RM-AAU013
wd ws
wa w; AV ?/1 (on/standby)
Press to operate. To turn off all the batteries with old ones. • Do not mix alkaline batteries and other components (SYSTEM STANDBY).
Observe the correct polarity when installing batteries. STR-K790...
Service Manual - Page 8
... same time to display options applicable to activate the buttons with components in the forward/backward direction of the DVD player or to ...Press to select A.F.D.
audio settings during recording), or multiple items on the TV screen.
level of all speakers at the same time... CD player, DVD player or Blu-ray disc player. STR-K790
Name
Function
D 2CH
Press to stop playback of the ...
Service Manual - Page 9
... tactile dots as an example only. Therefore, depending on the component, the above explanation is not available for DVD MENU or MENU.
Press to select track number 10.
Press the numeric buttons and TV (O) at the same time 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...
Service Manual - Page 10
...and the AUTO CAL buttons simultaneously, press the power ?/1 button to all channels so that all speakers will be selected for the AM channel step. All segments turn on . SW LFE SP ... button, press the power
?/1 button to the default setting.
"VACS OFF" appears. (8 second)
10 STR-K790
SECTION 2 TEST MODE
SOUND FIELD CLEAR MODE The preset sound field is cleared when this mode is turned ...
Service Manual - Page 11
... DIMMER , DCAC Factory test mode will start DCAC factory test mode.
1. Turn MASTER VOLUME jog, there will be test tone sound output from front left speaker of test tone)
STR-K790
11 DCAC FACTORY TEST MODE DCAC Factory Test mode have two stages:
1.
DCAC board Checking Connect front left...
Service Manual - Page 12
... following signal from Signal Generator 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...
Service Manual - Page 13
...8226; 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
...components identified by mark 0 or dotted line with part number specified. DIGITAL Board -
1 IC1905 9 (MCLK1)
72 ns 1 V/DIV, 40 ns/DIV
2 IC1101 id (X1)
3.5 Vp-p
41.6 ns 1 V/DIV, 20 ns/DIV
3 IC1301 ws (XIN)
4.2 Vp-p
STR-K790...
Service Manual - Page 15
...FRONT
RY601
R-CH
TM604(1/2) L R
SURROUND
Q708 RELAY
DRIVE
RY701
SPEAKERS IMPEDANCE USE 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
...(AEP,UK) T902(US,CND)
Q901
RELAY DRIVE
RY901
STR-K790
15
15 DISPLAY/POWER SECTION -
Service Manual - Page 25
...STR-K790
Ver. 1.1
1 A
B
C
DCAC
E BOARD
CN2001 (4pin-6pin) (Page 33)
D DIGITAL
F BOARD
CNS501 (Page 17)
E
DIGITAL
G F BOARD CNS502 (Page 17)
G
H
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-9pin)
(Page 33)
SPEAKERS...12 F-12 F-12
STR-K790
25
25 No. Location
...
Service Manual - Page 29
4-16.
STR-K790
(Page 27)
TP2
20 MAIN BOARD (1/4) (Page 27)
(Page 30)
POWER AMP
IC701 STK350-530T-E
37 -37
37
1
-1
37
-0.2
-0.2
37 ...RR14 10
CC14 0.01
RR15 10
CC15 0.01
RR16 10
CC16 0.01
TM604
R479 2.2k CNP504 5P
L SURROUND
R
SPEAKERS
IMPEDANCE USE 6-16
SUB WOOFER
D
DIGITAL BOARD
(4/5) CNP506 (Page 21)
No mark:FM
STR-K790
29
29 SCHEMATIC DIAGRAM - MAIN BOARD (3/4) -
Service Manual - Page 30
SCHEMATIC DIAGRAM - STR-K790
Ver. 1.1
4-17. MAIN BOARD (4/4) -
(Page 27)
IC501 STK350-530T-E
37
POWER AMP
37
1
-1
37
-0.2
-0.2
-0.2
-0.2
37
-1
1
37
R500 47k
C501 4.7 50V
R501 1k
C500 ...
CN701 4P
J
HEADPHONE BOARD CNP790 (Page 34)
TM602
RR11 10
RR12 10
RR13 10
CC11 0.01
CC12 0.01
CC13 0.01
TM602
FRONT
SPEAKERS
IMPEDANCE USE 6-16
CENTER
No mark:FM
STR-K790
30
30
Service Manual - Page 40
... Composite video select 1 (not used )
79
XIA
- Ground terminal
82
X0
- STR-K790
Pin No.
Connection for a crystal resonator
83
X1
- Pin Name
I/O
Description
46
...speaker relay control signal output
67 FRONT_B_RY/DG51_FA O Front B speaker control signal output
68
DC-CONTROL
O Center speaker relay control signal output
69
C/REAR/SB_RY
O Center, rear, surround back speaker...
Service Manual - Page 44
... 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/...STR-K790
DCAC DIGITAL
SECTION 6 ELECTRICAL PARTS LIST
NOTE: • Due to standardization, replacements in the
parts list may have some difference from the original one. • RESISTORS All resistors are in the diagrams or the components...
Service Manual - Page 53
...STR-K790
MAIN POWER
Ref.
Part No. Description
R705 R706 R707 0 R708
1-249-421-11 CARBON 1-249-440-11 CARBON 1-249-414-11 CARBON 1-249-405-11 CARBON
2.2K
5%
82K
5%
560
5%
100
5%
0 R709 0 R710
R711 0 R712
R713
1-249-405-11 CARBON
100
5%
1-234-182-11 ENCAPSULATED COMPONENT...CENTER/SPEAKERS IMPEDANCE 6-16Ω)
TM602 1-694-805-11 TERMINAL BOARD (SURROUND,SUB WOOFER/ SPEAKERS ...
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