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 jrcahigas on December 23rd, 2010
My Sony Str-k790 Has No Power
can i put new digital pwb,coz fuse is busted.
Current Answers
Related Sony STR-K790 Manual Pages
Service Manual - Page 1
...AM RECEIVER
9-887-542-02
2007C16-1 © 2007.03
Sony Corporation
Home Audio Division Published by Sony Techno Create Corporation Amplifier section Power Output1) Stereo mode (rated) (6 ohms 1 kHz, ...AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION: (Models of DTS, Inc. SERVICE MANUAL
Ver. 1.1 2007.03
STR-K790
US Model Canadian Model
AEP Model UK Model
• STR-K790...
Service Manual - Page 2
...SONY.
2
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. STR-K790
Power consumption
Area code
Power...Precision 245 digital multimeter is best to let solder bridges occur such as on chip component replacement • Never reuse a disconnected chip component. •...
Service Manual - Page 3
... 5-1. MAIN Section 14 4-2. DIGITAL Board (Side B) - ...... 17 4-5. DIGITAL Board (1/5 18 4-6. MODEL IDENTIFICATION -
Printed Wiring Boards - Schematic Diagram - Schematic Diagram - Schematic Diagram - POWER Board, DCAC Board,
HEADPHONE Board 33 4-21. ELECTRICAL PARTS LIST 44
3 HDMI SW Board,
HDMI BRIDGE Board (AEP, UK only 24 4-12. STR-K790
About area codes
The...
Service Manual - Page 7
STR-K790...component you press the input buttons (C). B ?/1 (on/standby)
Press to turn on or off the Sony audio/video components...turn the receiver on . Button
Assigned Sony component
VIDEO 1 VCR (VTR mode 3)
VIDEO 2...Audio...components..., replace all components, press ?/1 and...Sony audio/video components that the remote is assigned to control Sony components as follows. RM-AAU013
wd ...
Service Manual - Page 10
...segments are displayed. While depressing the SLEEP and the AUTO CAL buttons simultaneously, press the power ?/1 button to turn on the main power.
2. LFE SP B
x COAX
NEO:6
RDS D.RANGE MONO
k m MHz
4.... the power ?/1 button to turn on the main power. Set the FUNCTION to turn on the main power. 3. While depressing the MOVIE button, press the power
?/1 button to AM. STR-K790
SECTION ...
Service Manual - Page 11
... board Checking Connect front left speaker, and the display will start DCAC factory test mode.
1. When power off : Press the three buttons MUSIC + DISPLAY + ?/1 . "AD[]-[]xxx" xxx = 0 ... MASTER VOLUME jog, there will be test tone sound output from front left speaker of test tone)
STR-K790
11 DCAC DSP Data Line Checking 2. Afterward, press the DIMMER to 255 (depends on loudness of...
Service Manual - Page 12
... kHz Modulation : 1 kHz ANT input : 35 dBu (EMF)
Note: Please use video cable for checking. The stop of A, B and C are detected and automatic scanning stops. STR-K790
Ver. 1.1
TUNER SECTION [FM Auto Stop Check]
SET
SECTION 3 ELECTRICAL ADJUSTMENT
generator OUT (75 Ω)
Procedure: 1. Confirm that input Frequency of automatic scanning means "The...
Service Manual - Page 13
... pF)
50 WV or less are not indicated except for safety. Note: The components identified by mark 0 or dotted line with a VOM (Input impedance 10 MΩ... 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
• Waveforms -
SECTION 4 DIAGRAMS...
Service Manual - Page 15
...POWER SECTION -
BLOCK DIAGRAM - STR-K790
• R-CH is omitted due to same as L-CH. • Signal Path
: FM
L
IC501 POWER AMP
+V OUT2 12
8 IN2 NF2 9
Q501,502 LIMITER
Q503 BOOSTER
-V OUT2 11
IC601 POWER...
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... HDMI_CTRL
89
FUSE DETECT 63
AVRH...
Service Manual - Page 25
... 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 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...
Service Manual - Page 27
...
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 100P
R451 1k R402 1k
R452 1k R403 1k
R453 1k R404 1k
R454 1k
CNP501 15P
STR-K790
F
DIGITAL BOARD
(3/5) CNS501 (Page 20)
CNP502 11P...
Service Manual - Page 30
...C506 3p 500V
JW500
C557 100 10V
R553 2.7k
C556 3p 500V R554 68k
C507 100 10V
R503 2.7k
R504 68k
IC601 STK350-530T-E
POWER AMP
37
37
1
-1
37
-0.2
-0.2
-0.2
-0.2
37
-1
1.1
37
R600 47k
C601 4.7 50V
R601 1k
C600 2.2 100V
C602...01
CC12 0.01
CC13 0.01
TM602
FRONT
SPEAKERS
IMPEDANCE USE 6-16
CENTER
No mark:FM
STR-K790
30
30 SCHEMATIC DIAGRAM - STR-K790
Ver. 1.1
4-17.
Service Manual - Page 31
4-18. PRINTED WIRING BOARD -
STR-K790
1
2
3
4
5
6
7
8
A
DISPLAY BOARD
CL125
B
K
CN101
R198
POWER
CL128
BOARD
CL127
CNP102 (Page 33)
JW111 CL121
CL120
... CL109 CL110 CL111 CL112 CL113 CL114
CL115 CL116
CL117 CL118 CL105
H
DIGITAL BOARD CNS513 (Page 17)
JW135 JW134
JW147
JW146
TP100
11 1-872-420- (11)
STR-K790
31
31 DISPLAY BOARD - • See page 13 for Circuit ...
Service Manual - Page 32
STR-K790
4-19. SCHEMATIC DIAGRAM - DISPLAY BOARD -
• See page 38 for IC Block Diagrams.
1 A
B
C
D
E
F
G
H
K
POWER
BOARD
CNP152
I
(Page 34)
2
3
4
5
6
7
8
9
10
11
12
...DCAC_IN
I
MAIN BOARD
(2/4) CNP908 (Page 28)
H
DIGITAL BOARD
(4/5) CNS513 (Page 21)
CNP102 2P 1 DCAC_IN (CN2001)
2 DC-CONTROL (CN2001)
L
DCAC BOARD CN2001 (Page 34)
No mark : FM
STR-K790
32
32
Service Manual - Page 33
R2018
HEADPHONE BOARD
R137
A.F.D.
4-20. 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
...
Service Manual - Page 39
... Pin Function Description DIGITAL BOARD IC1101 MB90F045PF-G-...Audio data signal input from DIR
I GP9 signal input from DSP
O BST signal output to DSP
O HCS signal output to DSP
I Vacs control input
STR-K790...reference voltage input (+3.3V) - Not used (Open) - Not used (Open) - Analog power supply (+3.3V) I Input selector Encoder (B) signal input - Ground terminal
O Latch signal ...
Service Manual - Page 40
...81
VSS
- Connection for a crystal resonator
84
VCC3
- STR-K790
Pin No. Pin Name
I/O
Description
46
TUNER CLK
O Tuner...Power relay control signal output
59
VOL IC_CL
O Volume IC clock signal output
60
VOL IC_DA
O Volume IC data and latch signal output
61
PROTECTOR
I Protector status detect signal input
62
HP_RY
O Headphone relay control signal output
63
FUSE_DETECT
I Fuse...
Service Manual - Page 43
...) A-1221-231-A DIGITAL BOARD, COMPLETE (AEP, UK) 3-905-609-01 SCREW (TRANSISTOR) 3-703-244-00 BUSHING (2104), CORD
1-777-071-83 CORD, POWER (AEP, UK) 1-783-820-11 CORD, POWER (US, CND) ...-11 TUNER (FM/AM) (AEP, UK) 1-532-464-33 FUSE (T2.5AL/250V) (AEP, UK) 1-533-452-12 FUSE, GLASS TUBE (DIA.5) (4A/125V)
(US, CND) 6-702...#1 #1 #2 #1 #1 #1
not supplied
56
#1
51
51
Ref. STR-K790
Ver. 1.1
5-2.
Service Manual - Page 44
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 used on the set. • -XX and -X mean standardized parts, so they
are not stocked since they may...
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...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 ...
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