Transcript
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SERVICE MANUAL
Sony CorporationAudio & Video Business Group
Published by Sony EMCS (Malaysia) PG Tec
STR-KS370
SPECIFICATIONS
AV RECEIVER
9-890-531-01
2010A08-1
© 2010.01
US Model
Ver. 1.0 2010.01
This receiver incorporates Dolby* Digital and Pro
Logic Surround and the DTS** Digital Surround
System.
* Manufactured under license from Dolby
Laboratories. Dolby, Pro Logic, and the double-
D symbol are trademarks of Dolby Laboratories.
** Manufactured under license under U.S. Patent
#’s: 5,451,942; 5,956,674; 5,974,380;
5,978,762; 6,487,535 & other U.S. and
worldwide patents issued & pending. DTS and
DTS Digital Surround are registered trademarks
and the DTS logos and Symbol are trademarks of
DTS, Inc. © 1996-2008 DTS, Inc. All Rights
Reserved.
This receiver incorporates High-Definition
Multimedia Interface (HDMITM) technology.
HDMI, the HDMI logo and High-Definition
Multimedia Interface are trademarks or registered
trademarks of HDMI Licensing LLC in the
United States and other countries.
“x.v.Color” and “x.v.Color”
Sony Corporation.
“BRAVIA” is a trademark of Sony Corporation.
“PlayStation” is a registered trademark of Sony
Computer Entertainment Inc.
“S-AIR” and its logo are trademarks of Sony
About area codesThe area code of the receiver you purchased is
shown on the upper left 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”.
FRONT R
SPEAKERS
FRONT L SUR R SUR L CENTERSUBWOOFER
4-XXX-XXX-XX(X) AA
Area code
AUDIO POWERSPECIFICATIONS
Amplifier section
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(FTC)
(Models of area code US only)
FRONT L + FRONT R
With 3 ohm loads, both
channels driven, from 180
– 20,000 Hz; rated 84 watts
per channel minimum
RMS power, with no more
than 1% total harmonic
distortion from 250
milliwatts to rated output.
POWER OUTPUT (reference)
FRONT L/FRONT R/CENTER/SUR L/SUR R
167 W (per channel at
3 ohms, 1 kHz)
SUBWOOFER 165 W (at 3 ohms, 60 Hz)
Inputs
Analog Sensitivity: 1 V/50 kohms
Digital (Coaxial) Impedance: 75 ohms
FM tuner sectionTuning range 87.5 – 108.0 MHz
(100 kHz step)Antenna FM wire antenna
Antenna terminals 75 ohms, unbalanced
Intermediate frequency
10.7 MHz
AM tuner sectionTuning range
Antenna AM loop antenna
Intermediate frequency
450 kHz
Area code Tuning scale
10 kHz step 9 kHz step
US 530 – 1,710 kHz
531 – 1,710 kHz
Power requirements
Power output (DIGITAL MEDIA PORT)
DC OUT: 5 V, 0.7A MAX
Power consumption
Power consumption (during standby mode)
0.3 W (When Control forHDMI and S-AIR standbyare set to off)
Dimensions (w/h/d) (Approx.)
17 in × 2 5/8 in × 12 1/8 in(430 mm × 66.5 mm × 306 mm) including projecting partsand controls
Mass (Approx. ) 7 lb 8 oz (3.4 kg)
Area code Power requirements
US 120 V AC, 60 Hz
Area code Power consumption
US 110 W
Design and specifications are subject to
change without notice.
Halogenated flame retardants are not used in
the certain printed wiring boards.
General
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TABLE OF CONTENTS
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINEWITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND INTHE 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 follow-
ing 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 245digital 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)
1.5 k Ω0.15 μF AC voltmeter (0.75 V)
To Exposed Metal Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
NOTES ON CHIP COMPONENT REPLACEMENT
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.1. SERVICING NOTES .............................................. 3
2. DISASSEMBLY ......................................................... 42-1. Disassembly Flow ........................................................... 4
2-2. Case ................................................................................. 4
2-3. S-AIR Board ................................................................... 5
2-4. Tuner (FM/AM), IO Board ............................................ 5
2-5. Front Panel Block ........................................................... 6
2-6. MAIN Board ................................................................... 6
3. TEST MODE ............................................................. 7
4. ELECTRICAL CHECK .......................................... 9
5. DIAGRAMS ................................................................ 105-1. Block Diagram - MAIN Section - ................................... 11
5-2. Block Diagram - HDMI PC Section - ............................. 12
5-3. Block Diagram - DSP/S-AIR Section - .......................... 13
5-4. Block Diagram- AMP Section - ...................................... 145-5. Block Diagram - SMPS Section - ................................... 15
5-6. Printed Wiring Board
- MAIN Board (Component Side) - ................................ 17
5-7. Printed Wiring Board
- MAIN Board (Conductor Side) - .................................. 18
5-8. Schematic Diagram - MAIN Board (1/5) - ..................... 19
5-9. Schematic Diagram - MAIN Board (2/5) - ..................... 20
5-10. Schematic Diagram - MAIN Board (3/5) - ..................... 21
5-11. Schematic Diagram - MAIN Board (4/5) - ..................... 22
5-12. Schematic Diagram - MAIN Board (5/5) - ..................... 23
5-13. Printed Wiring Board- S-AIR and IO Board - ................ 24
5-14. Schematic Diagram - S-AIR Board - .............................. 24
5-15. Schematic Diagram - IO Board - .................................... 25
5-16. Printed Wiring Board - HDMI PC Board - ..................... 26
5-17. Schematic Diagram - HDMI PC Board (1/2) - ............... 27
5-18. Schematic Diagram - HDMI PC Board (2/2) - ............... 28
5-19. Printed Wiring Board - DISPLAY, IR, LED,
KEY FUNCTION and KEY POWER Board - .............. 29
5-20. Schematic Diagram - DISPLAY, IR, LED,
KEY FUNCTION and KEY POWER Board - ............... 30
5-21. Printed Wiring Board- SMPS Board - ............................ 31
5-22. Schematic Diagram - SMPS Board - .............................. 32
6. EXPLODED VIEWS ............................................... 436-1. Case, S-AIR Board Section ............................................ 43
6-2. Front Panel Section ......................................................... 44
6-3. Chassis Section ............................................................... 45
7. ELECTRICAL PARTS LIST ............................... 46
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SECTION 1
SERVICING NOTES
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 viscous (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.
NOTE OF REPLACING THE IC3500 AND IC3501 ON
THE HDMI PC BOARD
IC3500 and IC3501 on the HDMI PC board cannot exchange with
single. When these parts on the HDMI PC board are damaged,
exchange the entire mounted board.
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SECTION 2
DISASSEMBLY
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
2-2. CASE
2-2. CASE
(Page 4)
2-4. TUNER (FM/AM), IO BOARD
(Page 5)
2-3. S-AIR BOARD
(Page 5)
2-6. MAIN BOARD
(Page 6)
2-5. FRONT PANEL BLOCK
(Page 6)
SET
1 four screws FLAT HEAD (TP)
7 case
2 one screw FLAT HEAD (TP)
2 one screw FLAT HEAD (TP)
3
3
4 Lift up the case in the direction of arrow.
5 two claws
6
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2-4. TUNER (FM/AM), IO BOARD
2-3. S-AIR BOARD
1 wire (flat type) (9 core) (CNS250)
5 four screws +BV3 (3-CR)
3 two screws +BV3 (3-CR)
7 IO board
2 wire (flat type) (25 core) (CNS200)
6 cushion saranet
4 Tuner (FM/AM)
3 two screws +BV3 (3-CR)
1 four screws +BV3 (3-CR)
6 card slot (SAIR)
2 one screw +BV3 (3-CR)
4 connector (CN104)
5 SAIR board
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2-5. FRONT PANEL BLOCK
2-6. MAIN BOARD
1 wire (flat type) (13 core) (CNS700)
2 one screw
+BV3 (3-CR)
3 three claws
4 claw
6 front panel block
4 claw 5 three claws
7 heat sink (AMP)
8 MAIN board
1 wire (flat type) (19 core)(CN1007)
3 connector(CN906)
4 two screws +BV3 (3-CR)
4 two screws +BV3 (3-CR)
6 four screws BVTP 3 x 14
5 two screws +BV3 (3-CR)
2 connector(CN904)
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SECTION 3
TEST MODE
1. COLD RESET
All preset contents are cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
1. Press the [?/1] button on the set to turn the power on.
2. Keeps pressing the [?/1] button on the set for about five sec-
onds.3. The message “CLEARED” appears, then the set turns off.
2. HOW TO ENTER THE TEST MODENote: The operation of the button of the following test modes is only a
remote commander.
Procedure:
1. Press the [?/1] button to turn the power on.
2. Press the buttons in order of [TUNER] [RETURN] Hold
SHIFT button ([ENTER] [0] [1] [0]) [SOUND
FIELD +]
3. The message “TEST MENU” appears, then enter the test
menu.
4. Press the [?/1] button to exit from the test mode.
3. PANEL TEST
3-1. Pattern check
Procedure:
1. Enter the test mode menu.
2. Press the []/[] buttons to select “PANEL”, and press the
[ENTER] button.
3. All segments and all LEDs turn on. Change as follows all on,
test pattern 1, test pattern 2 and test pattern 3, all on in this
order.
NIGHT SLEEP HDMI COAX OPT TUNED ST S-AIR ECO MUTINGAACLPCM
;TrueHD
;D + EX
;PL II x
DTS 96/24
-ES NEO:6
DTS -HDLBR
MSTR HI RES
NIGHT SLEEP HDMI COAX OPT TUNED ST S-AIR ECO MUTINGAACLPCM
;TrueHD
;D + EX
;PL II x
DTS 96/24
-ES NEO:6
DTS -HDLBR
MSTRHI RES
TUNED STLPCM
;D EX
;PL II
DTS
NEO:6
DTS -HD
MSTR
3-2. Key check
Procedure:
1. Press the [VOLUME –] button, while executing pattern
check.
2. The message “K0 V0” appears. “K0” value increases when-
ever a button on the set is pressed. However, once a button has been pressed, it is no longer taken into account. All buttons on
the set is pressed, “K3 V0” is displayed.
3. “V” value increases in the manner of 0, 1, 2, 3 ... [MASTER
VOLUME] knob is turned clockwise, or it decreases in the
manner of 0, 9, 8, 7 ... [MASTER VOLUME] knob is turned
counterclockwise.
4. Press the [?/1] button to exit from the test mode.
3-3. Software version and destination display
Procedure:
1. Press the [VOLUME +] button, while executing pattern
check.
2. The display of model name, destination, and software version
changes whenever [VOLUME +] button is pressed.
3. Press the [?/1] button to exit from the test mode.
4. AMP TEST
Not used for the servicing.
Press the [?/1] button if having entered this mode.
5. TUNER FACTORY PRESET
Not used for the servicing.
Press the [?/1] button if having entered this mode.
6. VACS DISPLAY
Procedure:
1. Enter the test mode menu.
2. Press the []/[] buttons to select “VACS DISP”, and press the[ENTER] button.
3. It will appear the VACS status
7. VACS ON/OFF
Procedure:
1. Enter the test mode menu.
2. Press the []/[] buttons to select “VACS ON OFF”, and press
the [ENTER] button.
3. The VACS status will change.
8. DSP HALT MODE
Not used for the servicing.
Press the [?/1] button if having entered this mode.
9. DSP STATUS DISPLAY
Not used for the servicing.
Press the [?/1] button if having entered this mode.
10. HDMI UCOM UPDATE
Procedure:
1. Enter the test mode menu.
2. Press the []/[] buttons to select “HDMI VER”, and press the
[ENTER] button.
3. HDMI MICOM software version is displayed.
4. Press the [?/1] button to exit from the test mode.
11. HDMI THROUGH DMPORT UPDATEProcedure:
1. Enter the test mode menu.
2. Press the []/[] buttons to select “HDMI UPD”, and press the
[ENTER] button.
3. Connect the programming jig to dmport connection.
4. Flash HDMI software from computer through programming
jig.
5. Press the [?/1] button to exit from the test mode.
12. DMPORT TEST
Procedure:
1. Connect the DMPORT check jig (Part No. J-2501-309-A) with
the DMPORT jack (CN1701) on the MAIN board.
2. Press the [?/1] button to turn the power on.3. Confirm that both LEDs of the DMPORT check jig lights.
(Confirmation the power supply line)
4. Press the [DMPORT] button to select the “DMPORT”.
5. Enter the test mode menu.
6. Press the []/[] buttons to select the “DMPORT CHK”, and
press the [ENTER] button.
7. The message “DMPORT OK.” appears on the fluorescent indi-
cator tube and enter the digital media port test mode. (Confir-
mation of communication line)
When “NO DETECT” and “UART TO” are displayed on
the fluorescent indicator tube, confirm the connection of the
DMPORT check jig, and enter the mode again.
Each time the [>] button is pressed, the connect check and
adaptor version check are changed. Press the [.] button, connected confirmation of the
DMPORT check jig is done again.
8. To a pin-jack of the DMPORT check jig input information rel-
evant to audio signal (sine-wave 1.0 Vrms).
9. Confirm the output of speakers. (Confirmation of analog sig-
nal)
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10. Press the [?/1] button to exit from the test mode.
AF
oscillator
DMPORT
check jig
(Part No.
J-2501-309-A)
J001
amplifier FL/FR
speakers
MAIN board
CN1701
MAIN board
TB2001, 2002
13. DMPORT DEVICE TESTNote: It connects with the iPod adaptor and it is necessary to repair hard-
ness to execute this mode.
Procedure:
1. Connect the DMPORT check jig (Part No. J-2501-309-A) with
the DMPORT jack (CN1701) on the MAIN board.
2. Enter the test mode menu.
3. Press the []/[] buttons to select “DMPORT DEV”, and press
the [ENTER] button.
4. LED on the jig lights.
5. Press the [?/1] button to exit from the test mode.
14. S-AIR TEST MODEProcedure:
1. Enter the test mode menu.
2. Press the []/[] buttons to select “SAIR TEST”, and press the
[ENTER] button.
3. S-AIR test menu is displayed.
4. Press the [?/1] button to exit from the test mode.
14-1. Power
Procedure:
1. Enter the S-AIR test mode.
2. Press the []/[] buttons to select “POWER”, and press the
[ENTER] button.
3. The messages “000 SET” is appears.
4. Press the []/[] buttons to select the output power. (OFF or000 to 063)
5. Press the [ENTER] button, return to S-AIR test mode each
item.
14-2. NAMG
Procedure:
1. Enter the S-AIR test mode.
2. Press the []/[] buttons to select “NAMG”, and press the
[ENTER] button.
3. The messages “AUTO” is appears.
4. Press the []/[] buttons to select the NAMG setting value.
(107 to 117)
5. Press the [ENTER] button, return to S-AIR test mode each
item.
14-3. Version check
Procedure:
1. Enter the S-AIR test mode.
2. Press the []/[] buttons to select “VER. CHECK”, and press
the [ENTER] button.
3. MICOM software version of S-AIR product is displayed.
4. Press the [ENTER] button, return to S-AIR test mode each
item.
15. S-AIR TEST ELEC MODE
Not used for the servicing.
Press the [?/1] button if having entered this mode.
16. UART FLASH (SOURCE)
Not used for the servicing.
Press the [?/1] button if having entered this mode.
17. UART FLASH (TARGET)
Not used for the servicing.
Press the [?/1] button if having entered this mode.
18. COLD RESET
Procedure:
1. Enter the test mode menu.
2. Press the []/[] buttons to select “COLD RESET”, and pressthe [ENTER] button.
3. The message “CLEARED” appears, then the set turns off.
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SECTION 4
ELECTRICAL CHECK
FM AUTO STOP CHECK
signalgenerator
set
Procedure:1. Turn on the set.
2. Input the following signal from signal generator to FM antenna
input directly.
Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 35 dBu (EMF)
Note: Use 75 ohm coaxial cable to connect signal generator and the set.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and scan the input FM signal withautomatic scanning.
4. Confirm that input frequency of A, B and C are detected and
automatic scanning stops.
When the station signal is received in good condition, automatic
scanning stops.
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5-3. BLOCK DIAGRAM - DSP/S-AIR Section -
A
DATA_DIR, DOUT,
BCK, LRCK CKOUT
GMUTE
LRCK
DOUT
DATA_DIR
SD1
SIGNALSELECTOR
IC1701
14 4A
13 4B
CKOUT
11 3A
10 3B
SD0
BCK
SD2
SD3
5 2A
LRCK
BCK
6 2BMCK
3 1B
4Y 12
3Y 9
2Y 7
SEL
1
1Y 4
SWITCHING
IC1702
3 1B
6 2B
1 0 3 B
14
13
2 1A
F
4B
4A
1Y 4
2Y 7
3Y 9
SEL
1
4Y 12MUTING
Q1700
CDIR_XSTATE, DIR_RERR
C L K 1
33
C N V S S
9
P C M_
M U L T I
21
SYSTEMCONTROLLER
IC1005(2/4)
78 DPSIA
79 DPSIB
88 DPLRCK
94 DPFSCK
89 DPLBCK
16 DIR_ERR
82 DPSIE
81 DPSID
80 DPSIC
D S P S P I D S
26
D S P_
R E S E T
88
D S P_
I N T R
68
S P
I D S *
R E S E T *
I N
T_
R E Q
DSP
IC1003
DPSOA 64
SWITCHING
IC1002
1
2
5
3
7
6
MUTING
Q1004
DPDVLRCK 86
DPDVBCK 87
DPSOB 65
DPSOC 70
SWITCH
IC1000
AMP_BCK1
AMP_LRCK1
AMCK1
AMP_DATA1– AMP_DATA3,
AMP_BCK1,AMP_LRCK1, AMCK
H AMP_DATA1
AMP_DATA2
AMP_DATA3
D S P_
S P I C L K
7
D S P M O S I
5
D S P M I S O
6
S - A I R_
I 2 C_
S D A
78
S A I R_
S E L
85
S - A I R_
I 2 C_
S C L
77
S - A I R G P I O 2
67
S A I R_
A D C_
S E L
70
S - A I R_
D E T
71
S - A I R_
S R C_
M U T E
34
S - A I R R S T
63
143
142
X1000
25MHz
XTAL
CLKIN
SD0– SD3,MCK,
BCK, LRCK
97 NONAUDIO*B AUDIO
S
R
DIR_XSTATE
DIR_RERR
122 121 15
DPSOE 77
BUFFER
IC1008
2 A0
3 B0
5 A1
6 B1
11 A2
1 0 B 2
1 4 A 3
1 3 B 3
Y0 4
Y1 7
Y2 9
Y3 12
S
1
CN100
EZW-T100
4
2
16
26
15
14
23
19
18
7
12
25
20
11
24
MS AIR OUT L
Lch
R ch
SD1
SD2
BCK1
BCK2
LRCK1
LRCK2
I2C_SDA
I2C_SCL
INT
ADC_SEL
GND
SRC_MUTE
RESN
R-CH
SIGNALPATH
:AUDIO (ANALOG)
:AUDIO (DIGITAL)
S P
I C L K
M O
S I
M I S O
125 127 126
BUFFERIC1015
14
13
12
2
3
4
5
6
7
DMPORTRX (UCOMTX)
DMPORTTX (UCOMRX)6
5
CN1701
31 UCOMTX-DMPRX
32 UCOMRX-DMPTX
DET7
CLK1
CNVSS
RESET
RTS1
RXD14
5
CN1002
TXD18
91 DMPORT_DET
DMPORT
FLASH PROGRAMMING
3
7
2
DMPORT_RX
DMPORT_TX
(PAGE 12)
(PAGE 11)(PAGE 14)
(PAGE 11)
(PAGE 12)
(PAGE 11)
(PAGE 11)
(PAGE 12)
(PAGE 15)
Lch
Rch
14
13
R-CH
N (PAGE 11)
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For Schematic Diagrams.Note:
• All capacitors are inμF unless otherwise noted. (p: pF) 50WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are inΩ and 1/4 W or less unless otherwisespecified.
• f : internal component.• 2: nonflammable resistor.• 5: fusible resistor.• C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
n addition to this, the necessary note is printed in each block.)
• A : B+ Line.• B: B– Line.• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions. no mark : TUNER
* : Impossible to measure• Voltages are taken with VOM (Input impedance 10 M). Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.• Signal path.
J : AUDIO (DIGITAL) F : AUDIO (ANALOG) f : TUNER E : HDMI N : MIC
or Printed Wiring Boards.ote:
X : Parts extracted from the component side.Y : Parts extracted from the conductor side.f : Internal component.
: Pattern from the side which enables seeing.(The other layers' patterns are not indicated.)
Indication of transistor.
C
B
These are omitted.
E
Q
C E B
These are omitted.
• Ci rcuit Boards Location
Note:
The components identi-fied by mark0 or dottedline with mark0 are criti-cal for safety.Replace only with part
number specified.
Note:
Les composants identifiéspar une marque 0 sontcritiques pour la sécurité.
Ne les remplacer que parune piéce portant le nu-
méro spécifié.
Caution:
Pattern face side:
(SIDE B)Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.Parts on the parts face side seen from
the parts face are indicated.
Caution:Pattern face side:
(Conductor Side)
Parts face side:(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen fromthe parts face are indicated.
DISPLAY board
KEY FUNCTION board
LED board
KEY SELECTOR board
IR board
S-AIR board
IO board
HDMI PC board
FFC SUPPORT board
TUNER (FM/AM)
MAIN board
SMPS board
8/16/2019 Surround Sound Home Theater System
17/61
STR-KS370
STR-KS370
17 17
5-6. PRINTED WIRING BOARD - MAIN Board (Component Side) - • : Uses unleaded solder.• See page 16 for Circuit Boards Location.
1 2 3 4 5 6 7 8 9 10 11 14 1512 13
A
B
C
D
E
F
G
H
I
J
FLASH PROGRAMMING
118
CN1701
C1310
C1311
C1700
C1701
C1512
C1718
C 1 7 1 9
C1722
C1723C1724
C1726
C1744
C1745
C1748
C1751
C1752
C1759
C1761
C1762
L2000L2003L2006L2007
C2341C2345
L2012 L2013
C1000
C1003
D1001D1002
1
2 20
19
CN110
B2000
C 1 0 5 5
1
4
CN2002
C1250
C1252
C1254
C1257
C2003C2013
C1081
C1083
C2023
C1088
C2036
C2038
C2231
C 22 34 C 22 35
C2238
C2240
C2242
C 22 47 C 22 49
C2253
C2255
C2259C2260
EB1001
C2265C2266 C2267C2268
112
CNP100
C2272C2273
C2278 C2279
C2283 C2284
C2287C2288 C2289 C2290
C2293 C2294
X1001
C2297 C2298
C1300
C1513
C1525
C1524
JR
JR
JR
C1503 C 1 5 0 4
C1505
FB1002
C 1 5 0 6
C1312
C1507
C 1 5 0 8
C 1 5 0 9
R2099
C1703
C1510
C1705
C1706
C 1 7 0 7C1708
R 1 1 0 5 JL2101
R1106
JL2102
JL2103
C1518
R1108
EB2000
C1519
EB2001
EB2002
EB2003
EB2004
R1301
EB2005
C 1 5 2 0
R 1 3 0 4
R1305
R 1 1 1 2
R1306
R1113
C1717
C 1 5 2 3
R1114
R1115
R1309
R1116
R 1 1 1 7
R1118 R 1 1 1 9
L1000 R 1 3 1 0
R 1 3 1 3
L1003
L1007
R1700
R 1 3 1 8
R1701
C1729
R 1 1 2 5
R1702
R 1 1 2 6
JL2122
R 1 7 0 3
JL2123
R1704
R1128
JL2124
R1705
R1129
JL2125
R1706
JL2126
R1707
JL2127
IC1700
C1730
JL2128
1 8
916
IC1701
R1321
1 8
916
IC1702
IC1703
IC1704
R1130
R 1 3 2 5
R1131
C1736
R1133
R 1 1 3 4
C1738
R 1 1 3 5
R1136
JL2132
R1713
JL2133
R 1 1 3 8
X2000
JL2134
R1139
R1715
JL2135
R1716
R1717
R 1 3 3 0
C1740
R 1 7 1 8
JL2138
C 1 7
4 1
JL2139
R1332
C1742
C1743
R 1 1 4 0
R 1 3 3 5
R 1 1 4 1
R 1 1 4 2
R 1 3 3 6
R 1 1 4 3
C 1 7 4 7
R1720
R1338
JL2140
R1145
C 1 7 4 9
R1721
JL2141
R 1 7 2 2
C 2 3 0 2
JL2142
R 1 1 4 7
R1723
C 2 3 0 3
JL2143
R 1 1 4 8
R1724
R 1 7 2 5
R1726
C 2 3 0 6
R 1 7 2 7
C 2 3 0 7
C 1 7 5 0
R 1 7 2 8
R1340
R1729
C1755
C 1 7 5 6
R 1 1 5 3
R 1 1 5 4
R1730
F B 2 0 0 0
R1155
R 1 7 3 1
R 1 1 5 6
R1732
FB2002
R 1 1
5 7
R 1 7 3 3
F B 2 0 0 3
R 1 1 5 8
R1734
C 2 3 1 6
R1737
C 2 3 1 7
R1738
C 1 7 6 0
C 2 3 1 8
R1739
C 2 3 1 9
R 2 1 0 0
R 2 1 0 1
R 1 1 6 3
R1740
C2320
R1165
R1741
C2321
R 1 7 4 2
C2322
R1743
C2323
R 1 7 4 4
C2324
R1745
C2325
C2326
C2327C2328
C2329
R1172R1173
R2113
R 1 7 5 0
R1174
C2330
R1751
R1175
C2331
R1176R1177
R1753
C L 1 0 0 0
R1178 R1179
CL1002
CL1004
R1180
R1181
R1182
D 2 1 2 6
R 1 1 8 5
C2342
R2127
CL1010
R1188
R 2 1 2 8
R 2 1 2 9
CL1012
R1190 R 1 1 9 1
R 1 1 9 2
TP2002
TP2003
T P 2 0 0 5
JL1006
C L 1 0 2 7
TP2007
CL1028
TP2008
R2140
CL1029
TP2009
R 2 1 4 1
R 2 1 4 5
R2146
R2147
CL1030
J L 1 0 1 0
TP2010
R2148
C L 1 0 3 1
TP2011
R 2 1 4 9
C L 1 0 3 2
TP2012
C L 1 0 3 3
TP2013
C L 1 0 3 4
T P 2 0 1 4
TP2015
CL1036
TP2016
CL1037
R 2 1 5 0CL1039
R 2 1 5 1
R2152
R 2 1 5 5
R 2 1 5 7
C L 1 0 4 0
R2158
CL1041
JL1021
R2159
C L 1 0 4 2
CL1043
JL1024
TP2024
JL1025
TP2025
JL1026
TP2026
CL1047
TP2027
CL1048
JL1029
CL1049
19
CN1002
R 2 1 6 4
1 9
1
1 8
2
CN1007
C L 1 0 5 0
T P 2 0 3 0
JL1031
CL1051
T P 2 0 3 1
J L 1 0 3 2
T P 2 0 3 2
JL1033
CL1053
TP2033
EB1700
CL1054
C1001
CL1055
C1002
C 2 1 9 6
CL1057
C2197
BE Q 1 0 0 5
B
E Q 1 0 0 7
B
E Q 1 0 0 8
R2178
B
E Q 1 0 0 9
CL2003
C 1 0 1 0
CL2004
C1011C1012 C 1 0 1 3
C L 2 0 0 7
C 1 0 1 4
CL2008
C1015
C1016
C1017
R2183
C 1 0 1 8
R2184
C 1 0 1 9
R 2 1 8 5
R2187
C1020
C1024
C 1 0 2 5
D1003
C1027
R1000
C1028
D1005
C 1 0 2 9
R1002
R 1 0 0 3
1
2
13
12
CNS700
R 1 0 0 4
D 1 0 0 8
R2198
R1005
JL2001
R2199
R 1 0 0 6
JL2002
R1007
JL2003
R 1 0 0 8
IC1000
X1700
C1030
C1031
R 1 0 0 9
6
15
IC1001
C 1 0 3 2
IC1002
1 4 4 1
1 0 8
1 0 9
7 3 7 2
3 6 3
7
IC1003 C 1 0 3 3 C
1 0 3 4
IC1005
C 1 0 3 5
C1036
IC1006
C 1 0 3 7 C1038
R 1 0 1 0
1
8 9
16
IC1008
6
15
IC1009
C 1 0 3 9
R 1 0 1 1
R1012
R 1 0 1 3
R1017
6
1 5
IC1010
C 1 0 4 0
IC1011
R1019
JL1076
I
O
IC1012
C 1 0 4 2
IC1013
C1043
85
14
IC1014
1 8
916
IC1015C1046
C1047 C 1 0 4 8
R1021
C1049
R1022
R 1 0 2 3
F B 1 7 0 0
R 1 0 2 4
F B 1 7 0 1
R1025
FB1702
R1026
R1027
C1050
C1051
R1029
C1052
F B 1 7 0 7
C1053
FB1708
C1054
R 1 2 2
2
R 1 2 2 3
R1030
R 1 0 3 1
R 1 0 3 2
R 1 0 3 3
F B 1 7 1 0
R1034
C1251
R 1 0 3 6
C 1 0 6 0
C 1 2 5 5
C 1 0 6 1
C 1 2 5 6
C 1 0 6 2
C1065
C 2 0 0 6
C1067
B
E
Q 2 0 0 3
B
E
Q 2 0 0 4
B
E
Q 2 0 0 5
R1042
B
E
Q 2 0 0 6
B
E
Q 2 0 0 7
R 1 0 4 4
B
E
Q 2 0 0 8
R1045
B
E
Q2009
R1047
C2204
C 2 0 1 0
R1049
C 2 2 0 5
C 2 0 1 1
C 2 2 0 6
C 2 2 0 7
B
E
Q2010
L 1 7 0 1
B
E Q 2 0 1 1
B
E
Q
2 0 1 2
C 2
0 1 6
B
E
Q 2 0 1 3
C2017
C1078
R1050
B
E
Q 2 0 1 4
R1051
BE
Q2017
B EQ2018 R 1 0 5 5
B
E Q 2 0 1 9
C1080
C 2 0 2 0
J L 2 6 3 0
C 2 0 2 1
JL2055
C 1 0 8 2
BE
Q2020
C1085
B
E
Q2021
C 2 0 2 6
R 1 0 6 0
R1061
R 1 0 6 4
R1065
R1067
R 2 0 0 7IC2000
R 2 0 0 8
C 2 0 3 0
C1091
IC2001 R 2 0 0 9
C 2 0 3 1
C 1 0 9 2
IC2002
IC2003
C 2 0 3 3
R2200
IC2004 C 2 0
3 4
R2201
C2035
1
44
22
23
IC2005 R 2 2 0 2
1
44
22
23
IC2006
R 2 2 0 3
1
44
22
23
IC2007
R 2 2 0 4
R2010
R 1 0 7 1
R 2 2 0 5
R2011
C 2 0 3 9
R2012
R1073
R 2 0 1 3
R1074
R2208
R 2 0 1 4
R2209
R2015
R 1 0 7 6
R2016
R2017
R2018
C2040
R2019
C2043
R2210 R2211
C 2 0 4 6
R2020
R2021
R1082
R2022
R1083
R2023
R 2 0 2 4
R1086
R 2 0 2 6
C 2 2 4 3
R 2 0 2 8
R1089
JL2087
R1090
R2031
R1093
R2033
R1094
R2034
R1095
R 2 0 3 5
C 2 2 5 1
R1096
R2036
JL2092
R 1 0 9 7
JL2093
R1098
R 2 0 3 8
JL2670
R 1 0 9 9
R 2 0 3 9
JL2096
JL2098
R2040
C 2 0 6 8
R2041
C 2 0 6 9
R 2 0 4 2
R 2 0 4 3
C 2 2 6 3
CL1711
EB1000
C 2 0 7 0
CL1701
C 2 0 7 1
CL1702
C
2 0 7 2CL1703
C2073
C 2 2 7 0
R 2 0 5 5
R 2 0 5 7 R
2 0 5 8
S L 2 0 0 1
S L 2 0 0 2
R2069
R 2 0 7 2
R 2 0 7 3
X1000
C1106
1
2
2 5
2 4
CNS201
C 1 3 0 1
R2085
R 2 0 8 7
R 2 0 8 8
C 1 1 1 1
C 1 1 1 2
C1113
C1309
L 1 0 0 8
L1009
L 1 0 1 0
B
E
Q 1 0 0 6B E
Q1004
B E
Q1700
TP2001
L1011
R2228
JL1035
5
8
4
1
11213
2425
3736
48112
13
2425
3736
48
11213
2425
3736
48
1
1213 24
25
363748
IO BOARD
CNS200
(PAGE 24)
FHDMI PC
BOARD
CN3512
(PAGE 26)
DISPLAY BOARD
CNS701
(PAGE 29)
SMPS BOARD
CN906
(PAGE 31)
S-AIR BOARD
CN104
(PAGE 24)
SMPS BOARD
CN904
(PAGE 31)
TB2001 TB2002
SPEAKERS
CENTERSUBWOOFER
SPEAKERS
SUR RSUR L FRONT RFRONT LMAIN BOARD (COMPONENT SIDE)
(CHASSIS)
(CHASSIS)(CHASSIS) (CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
C
A E B
1-881-001-
G
IC1705
11(11)
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18/61
STR-KS370
STR-KS370
18 18
PRINTED WI RING BOARD - MAIN Board (Conductor Side) - • : Uses unleaded solder.• See page 16 for Circuit Boards Location.
1 2 3 4 5 6 7 8 9 10 11 14 1512 13
F B 1 0 0 1
R 2 0 9 7
R2098
C 1 7 0 2R1100
R1101
R1102
R1103
R 1 1 0 4
C1514
JL2100
C 1 7 0 9
FB1013
R 1 1 0 7
JL2104
R 1 1 0 9
JL2105
JL2106JL2107
C1710
JL2108
C1711
JL2109
C1712
R 1 1 1 0
C 1 7 1 4
C 1 5 2 1
R1111
C 1 7 1 5
C 1 7 1 6
C1522
JL2110 JL2111JL2112 JL2113
JL2114JL2115 JL2116JL2117
JL2118 JL2119
D1700
L 1 0 0 4
D1701
L1005
JL2120 JL2121
R1137
R 1 7 1 9
C1746
C2301
R1339
R 1 1 4 6
C2308C2309
R 1 1 5 9
R1735R1736
R1160R1162
R 1 1 6 4
R 1 1 6 6
R 1 1 6 7
R 1 1 6 8
R 1 1 6 9
R1746R1747
R 1 1 7 0
R 1 1 7 1
R 2 1 1 1
R2112
C2333
C L 1 0 0 1
C2335 C2336C2337
C2338
CL1005
C2339
CL1008
R2125R2126
R1187
C 2 3 4 3
C 2 3 4 8
C2154
C 2 1 5 5
C2156
C L 1 0 1 7
C 2 1 5 7
C L 1 0 1 8
C L 1 0 2 0
TP2000
C L 1 0 2 1
C L 1 0 2 2
C L 1 0 2 3
C L 1 0 2 4
TP2004
C L 1 0 2 5
TP2006
JL1007
JL1011
JL1012
J L 1 0 1 3
J L 1 0 1 4
J L 1 0 1 5
C2175
J L 1 0 1 6
C 2 1 7 6
J L 1 0 1 7 J
L 1 0 1 8
J L 1 0 1 9
TP2019
JL1020
TP2020
TP2021
TP2022
J L 1 0 2 7
R2160R2161
R2165
R2166
CL1052
TP2035
CL1056
TP2036
TP2037
C1004
TP2038
C1005
TP2039
C 1 0 0 7
R2177
TP2040 TP2041
CL2002
TP2042
CL2005
R2188 R2189
C1021
D 1 0 0 0
R2190R2191 R2192 R2193R2194 R2195
R1014
F B 1 7 0 3
R 1 0 2 8
F B 1 7 0 4
FB1705
FB1706
R1224
C 1 0 5 8
R 1 2 2 5
R 1 0 3 5
C1258
C 2 0 0 4
C1259
C 2 0 0 5
C1066
C2007
C 2 0 0 8
C 2 0 0 9
C1261
R 1 0 4 8
C 1 0 7 1
JL2045
C1072
C1266
C2012
JL2046
C1073
JL2047
C 1 0 7 4
C2208
C 2 0 1 4
JL2048
C 1 0 7 5
C 2 2 0 9
C 2 0 1 5
JL2049
C1076
C 2 0 1 8
C1079
C 2 0 1 9
R 1 0 5 2
R1053
C 2 2 1 0
JL2050
C2211
JL2051
C2212
JL2052
C 2 2 1 3
JL2053
R1058
C 2 2 1 4
R 1 0 5 9
C2215
C2216
C2022
C 2 2 1 7
C 2 2 1 8
C 2 0 2 4
C2219
C 2 0 2 5
C 1 0 8 6C2027
C2028
C1089
C 2 0 2 9
R 1 0 6 3
C 2 2 2 0
C2221
R 1 0 6 6
C 2 2 2 2
C 2 2 2 3
R1068
C 2 2 2 4
R1069
C 2 2 2 5
C 2 2 2 6
C2032
C 1 0 9 3
C 2 2 2 7
C 2 2 2 8
C 2 2 2 9
C 2 0 3 7
R 1 0 7 0
R2206 R2207
C2230
R1075
C 2 2 3 2
R1077
C 2 2 3 3
R1078
C 2 2 3 6
JL2076
C 2 2 3 7 JL2077
JR
JR1000
C2044
JL2078
J R
J R 1 0 0 1
C2239
C2045
JR
JR1002
J R
J R 1 0 0 3
C2047 J R
J R 1 0 0 4
J R
J R 1 0 0 5
JR
JR1006
JR
JR1007
R1084
JR
JR1008
R1085
JR
JR1009
C2241
R1087
C 2 2 4 4
C 2 2 4 6
JR
JR1010
C2248
JL2088
J R
J R 1 0 1 1
JL2089
JR
JR1012
J R
J R 1 0 1 3
R2224
R1092
R2226R2227
C 2 2 5 0
JL2090
JL2091 C 2 2 5 2
C2254
JL2094
JL2095
C2256
C2257
JL2097
C2258
C 2 0 6 6
C2067
C 2 2 6 2
C 2 2 6 4
C 2 2 6 9
R2053
R 2 0 5 4
C 2 2 7 1
C2275C2276 C2281C2282
R2067
R2068
C 2 2 8 5
C 2 0 9 1
C 2 2 8 6
C2092
C 2 2 9 1
C 2 2 9 2
C2295C2296
C 1 1
0 3
C1105
C2299
R2083
R2084
CL1007
CL1006
CL1009
CL1014 CL1013
CL1026
CL1016
CL1003
CL1015
CL1035
CL1061
CL1059CL1063 CL1060CL1068
CL1069
CL1070
CL1064
CL1072
CL1065
CL2009
CL1066CL1067
CL1062
CL1074
CL1073
C L 1 0 7 1
CL2010
R1341
C L 1 7 0 5
CL1730
CL1729
C L 1 7 2 8
CL1727 CL1726
CL1725
CL1723
CL1724
CL1722
CL1720CL1721
CL1718
CL1717 CL1716
CL1715 CL1714CL1713
CL1712
CL1710
CL1709
CL1708CL1707
C L 1 7 0 6
CL1075
MAIN BOARD (CONDUCTOR SIDE)
1-881-001-11
(11)
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STR-KS370
STR-KS370
22 22
1. SCHEMATIC DIAGRAM - MAIN Board (4/5) - • See page 33 for IC Block Diagrams.
1 2 3 4 5 6 7 8 9 10 11 14 1512 13
3 2
MAIN BOARD (4/5)
0.1C2026
0.1C2018
0.1C2012
1000pC2035
AMP_DATA1
470R2014
16V220
C2036
SC_SCDT T P 2 0 2 7
0.01C2037
T P 2 0 3 0
AMP_DATA2
0.1C2029
0.1C2004
0.1C2007
TP2010TP2005
220R2036
0.1C2005
SC_SHIFT
10kR 20 20 4 70
R2019
AMP_DATA3
SC_LAT1
T P 2 0 1 2
0.1C2032
0.1C2025
0.1C2011
47R2040
T P 2 0 1 1
AMP_BCK1
SC_LAT2 TP2008
T P 2 0 1 3
AMP_LRCK1
T P 2 0 2 6
0.1C2028
0.1C2020
0.1C2015
0.1C2006
220R2034
SC_LAT3
R203810k
C20341
C234122016V
C15140.1
C151310006.3V
L1004 FB2000 R203910k
C2348100p
47R2018
AMCK1
T P 2 0 3 3
TP2016
T P 2 0 2 5
0.1C2031
0.1C2024
0.1C2009
0.1C2017
+3.3V_Amp
NSPMUTE
47R2041
470R2008
T P 2 0 1 4
0.1C2010
T P 2 0 2 4
0.1C2027
0.1C2019
0.1C2014
0.1C2021
SC_OVF1
47R2013
SC_OVFW
T P 2 0 3 2
SC_INIT
0.1C2030
TP2006
0.1C2022
0.1C2008
0.1C2016
DGND
T P 2 0 1 5
10kR2009
47R2007
5
43
2
1
TK11118CSCL-GIC2003
CONT
GND
N P V OU T
VIN
T P 2 0 0 2
T P 2 0 0 9
SC_SOFT_MUTE
T P 2 0 3 1
100R2158
100R2157
1 0 0
R 2 1 5 9
16V47
C2003
16V47
C2013
16V47
C2023
47R2033
10V220
C2038
FB2003
0.01C2039
R2228100
123456789101112
13
14
15
16
17
18
19
20
21
22
23
24
25 26 27 28 29 30 31 32 33 34 35 36
37
38
39
40
41
42
43
44
45
46
47
48
CXD9788ARIC2002
X V S S
V S U B C
V S S R
O U T R 2 ( - )
V D D R
O U T R 1 ( + )
V S S R
V S S L
O U T L 2 ( - )
V D D L
O U T L 1 ( + )
V S S L
XOVSS
XFSOOUT
XOVDD
DVDD
DVSS
NSPMUTE
SOFTMUTE
PGMUTE
SCDT
SCSHIFT
SCLATCH
OVF FLAGR
OVF FLAGL S F L A G
I N I T
M C K S E L
L R C K
B C K
D A T A
B F V D D
B F V S S
T E S T
D V D D
X F S I I N
FSOCKO
FSOI
HPOUTR2
HPVSSR
HPOUTR1
HPVDDR
HPOUTL2
HPVSSL
HPOUTL1
HPVDDL
XVDD
XFSOIN
123456789101112
13
14
15
16
17
18
19
20
21
22
23
24
2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6
37
38
39
40
41
42
43
44
45
46
47
48
CXD9788ARIC2001
X V S S
V S U B C
V S S R
O U T R 2 ( - )
V D D R
O U T R 1 ( + )
V S S R
V S S L
O U T L 2 ( - )
V D D L
O U T L 1 ( + )
V S S L
XOVSS
XFSOOUT
XOVDD
DVDD
DVSS
NSPMUTE
SOFTMUTE
PGMUTE
SCDT
SCSHIFT
SCLATCH
OVF FLAGR
OVF FLAGL S F L A G
I N I T
M C K S E L
L R C K
B C K
D A T A
B F V D D
B F V S S
T E S T
D V D D
X F S I I N
FSOCKO
FSOI
HPOUTR2
HPVSSR
HPOUTR1
HPVDDR
HPOUTL2
HPVSSL
HPOUTL1
HPVDDL
XVDD
XFSOIN
123456789101112
13
14
15
16
17
18
19
20
21
22
23
24
25 26 27 28 29 30 31 32 33 34 35 36
37
38
39
40
41
42
43
44
45
46
47
48
CXD9788ARIC2000
X V S S
V S U B C
V S S R
O U T R 2 ( - )
V D D R
O U T R 1 ( + )
V S S R
V S S L
O U T L 2 ( - )
V D D L
O U T L 1 ( + )
V S S L
XOVSS
XFSOOUT
XOVDD
DVDD
DVSS
NSPMUTE
SOFTMUTE
PGMUTE
SCDT
SCSHIFT
SCLATCH
OVF FLAGR
OVF FLAGL S F L A G
I N I T
M C K S E L
L R C K
B C K
D A T A
B F V D D
B F V S S
T E S T
D V D D
X F S I I N
FSOCKO
FSOI
HPOUTR2
HPVSSR
HPOUTR1
HPVDDR
HPOUTL2
HPVSSL
HPOUTL1
HPVDDL
XVDD
XFSOIN
2 2 0
R 2 0 1 0
2 2 0
R 2 0 1 5
2 2 0
R 2 0 2 1
2 2 0
R 2 0 1 1
2 2 0
R 2 0 1 6
2 2 0
R 2 0 2 2
220R2012
220R2017
220R2023
C20404p
680R2035
49.152MHzX2000
4pC2207
1MR2031
JL2003
1
2
34
5
TC7SHU04FU(T5ASOJF)IC2004
VCC
YGND
A
NC
JL2055
1000pC2045
100pC2342
100pC2043
100pC2044
0.1C2047
S C_
L A T 2
S C_
S O F T_
M U T E
S C_
L A T 3
S C_
L A T 1
S C_
S H I F T
P G M U T E
P G M U T E
S C_
S C D T
S C_
S H I F T
S C_
S O F T_
M U T E
S C_
S O F T_
M U T E
S C_
S C D T
S C_
S H I F T
P G M U T E
SC_SCDT
SC_INIT
SC_SOFT_MUTE
SC_SHIFT
S C_
S C D T
S C_
I N I T
OVFFLAGR2
OVF
SC_LAT2
SC_LAT3
SC_LAT1
O V F F L A G R 2
O V F
S C_
I N I T
S C_
I N I T
3 0
2 9
2 8
2 7
3 1
3 3
3 4
3 5
3 6
4 0
4 1
3 9
3 8
3 7
3 2
IC2004CLOCK BUFFER
IC2000IC2001STREAMPROCESSOR
IC2002
IC2003+1.8V REGULATOR
STREAM PROCESSOR STREAM PROCESSOR
MAINBOARD
(5/5)(Page 23)
15
MAINBOARD
(3/5)(Page 21)
12
MAINBOARD
(2/5)(Page 20)
6
3 .3 3 .4 1 .7 1 .7 1 .7 3 .3 1 .8 1 .7 3 .3 3 .4 1 .7 1 .7 1 .3 3 .3 1 .8 1 .7 3 .3 3 .4 1 .7 1 .7 1 .7 3 .3 1 .8 1 .7
1.7 3.3 1.7 1.7 3.3 1.7 1.7 3.3 1.7 1.7 3.3 1.7 1.7 3.3 1.7 1.7 3.5 1.7
1.6
3.3
3.3
3.3
1.7
1.7
3.3
3.3
3.3
1.7
1.7
1.8
3.3
1.6
3.3
3.3
3.3
1.7
3.3
1.8
3.4
3.4
3.3
0
0
3.4
3.3
3.3
1.5
1.8
3.4
3.4
3.3
0
0
3.4
3.3
3.3
1.8
3.4
3.4
3.3
0
0
3.4
3.3
1.6
3.3
1.3
1.7
3.3
*
IC B/D IC B/DIC B/D
56
4
8/16/2019 Surround Sound Home Theater System
23/61
8/16/2019 Surround Sound Home Theater System
24/61
STR-KS370
STR-KS370
2424
3. PRINTED WIRING BOARD - S-AIR and IO Board -
• : Uses unleaded solder.e page 16 for Circuit Boards Location.
5-14. SCHEMATIC DIAGRAM - S-AIR Board -
1 2 3 4 5 6 7
B
E Q 2 0 1
B
E
Q200
R 2 1 0
R 2 1 1
R 2 1 6
R 2 1 7
R218
R 2 1 9
R 2 2 0
R 2 2 3
R 2 2 4
R225
R226
R229
R230
R231
R232
C201
R241
R 2 4 2
R 2 4 3
R252
C216
R 2 5 3
C217
R254 R 2 5 5
R256
R257
R258
C220
C221
JL205
JL207
C 2 2
3
JL208
JL209
R 2 6 2 R
2 6 3
C227
R 2 6 4
C228
R265
C229
R 2 6 6
R 2 6 7
R268
JL211
R269
JL212
JL213
JL214
C230
JL215 JL216
J L 2 1 7
JL218
R270
R271
R 2 7 2
R273
R 2 7 4
R275
R 2 7 6
R 2 7 7
JL225
JL226
JL227
JL228
JL229
R 2 8 1
R 2 8 6
R287JL230
R288
R 2 8 9
JL234 JL235
JL236 JL237
J L 2 3 8
R 2 9 0
C 2 5 4
JL239
R 2 9 2
C256
R 2 9 3
R294
R 2 9 5
C259
R 2 9 6
R297
JL240
JL241
JL242
C260
C 2 6 1
C 2 6 3
C265
C272
C273
C 2 8 0
C283
C284
1 4
58
IC209
9 16
18
IC210IC211
12 1
13 24
IC212
R 2 0 0
R201
R 2 0 6R207
R208 R 2 0 9
FB202
F B 2 0 0
F B 2 0 1
C285JL204
C291FB203
C206
1 2
8 9
CNS250
C214
C222
C233 C234C235 C236
C253
C255
C257
C258
JW206
C262
JW212
J W
2 1 5
C278
C281
C282
OVCC OVCCIC203
JW242
JW279
J W 3 0 0
2 4
2
2
5
1
CNS200
C219
JW296
JW295
JW298
J W 2 6 6
JW200
JW283
J W 2 3 5
J W 2 3 4
JW297
J W 2 8 9
J W 2 9 0
J W 2 9 4
J W 2 9 3
JW243
JW277
JW281
J W 2 3 1
J W 2 2 4
J W 2 0 9
J W 2 2 8
J W 2 2 5
JW210
JW253
C208
JW271
TUNER
(FM/AM)
FM75W
COAXIAL
ANTENNA
AM
CMAIN BOARD
CNS201
(PAGE 17)
IO BOARD
S-AIR BOARD
1-881-005-
1-881-004-
IC202
R 1 0 3
R108
R 1 0 2
R101
R100
R105
R 1 0 7 R
1 0 6
C107 C106
JL114
J L 1 1 6
J L 1 0 7
JL105
JL112
J L 1
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