HT-SS380, STR-KS380 - Sony Audio Service Manual (repair manual)

2011A08-1

© 

2011.01

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; 6,226,616; 6,487,535; 

 

7,212,872; 7,333,929; 7,392,195;

 

7,272,567 & other U.S. and 

 

worldwide patents issued & pending.

 

DTS, DTS-HD and the Symbol are

 

registered trademarks, & DTS-HD

 

Master Audio, and the DTS logos are

 

trademarks of DTS, Inc. Product

 

includes software. © DTS, Inc. All 

 

Rights Reserved.

This receiver incorporates High-Defi -
nition Multimedia Interface (HDMI

TM

) 

technology. HDMI, the HDMI Logo, and 
High-Defi nition Multimedia Interface are 
trademarks or registered trademarks of 
HDMI Licensing LLC in the United
States and other countries.

“x.v.Color (x.v.Colour)” and “x.v.Color
(x.v.Colour)” logo are trademarks of Sony
Corporation.

“BRAVIA” is a trademark of Sony 
Corporation.

“PlayStation” is a registered trademark of 
Sony Computer Entertainment Inc.

iPhone

®

, iPod

®

, iPod classic

®

, iPod nano

®

, 

and iPod touch

®

 are trademarks of Apple 

Inc., registered in the U.S. and other 
countries.

All other trademarks and registered 
trademarks are of their respective holders. 
In this manual, ™ and ® marks are not 
specifi ed.

“Made for iPod” and “Made for iPhone” 
mean that an electronic accessory has 
been designed to connect specifi cally to 
iPod or iPhone, respectively, and has been 
certifi ed by the developer to meet
Apple performance standards.

Apple is not responsible for the opera-
tion of this device or its compliance with 
safety and regulatory standards. Please 
note that the use of this accessory with 
iPod or iPhone may affect wireless 
performance.

Amplifi er section
POWER OUTPUT AND TOTAL 
HARMONIC DISTORTION:
(FTC)
(USA model 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.

(Other models)
POWER OUTPUT (rated)
FRONT L + FRONT R

  

108 W + 108 W 

   

(at 3 ohms,

   

1 kHz, 1% THD)

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/50kohms

  Digital (Coaxial) 
   

Impedance: 75 ohms

FM tuner section
Tuning range
CND and US models

  

87.5 MHz – 108.0 MHz

   

(100 kHz step)

Other models 

87.5 MHz – 108.0 MHz

   

(50 kHz step)

Antenna  

FM wire antenna (aerial)

Antenna terminals  
   

75 ohms, unbalanced

General
Power requirements

CND, US

120 V AC, 60 Hz

AR, AEP

220 V AC - 240  V AC,
50/60 Hz

Power output (DMPORT)
 

DC OUT:   5 V, 1 A MAX

Power consumption

CND, AR,
AEP, US

110 W

Power consumption (during standby mode)
 

 

0.3 W (When Control for

 

 

HDMI is set to off)

Dimensions (w/h/d) (Approx.)
 

 

430 mm × 65 mm × 

 

 

306 mm

 

 

(17 in × 2 5/8 in × 

 

 

12 1/8 in)

 

 

including projecting parts  

 

 

and controls

Mass (Approx.)  3.0 kg (6 lb 10 oz)

• Abbreviation
 

CND 

: Canadian model

 

AR 

: Argentina model

COMPONENTS  IDENTIFIED  BY  MARK  0  OR  DOTTED  LINE  
WITH  MARK  0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS 

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 245 

digital 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)

NOTES  ON  CHIP  COMPONENT  REPLACEMENT
• 

Never reuse a disconnected chip component.

• 

Notice that the minus side of a tantalum capacitor may be da-

 

maged by heat.

 ..............................................   3

 .........................................................  

4

2-1.  Disassembly F low ...........................................................  

4

2-2. 

Case .................................................................................  

4

2-3.  Front Panel Block ...........................................................   5
2-4.  MAIN B oard ...................................................................  

5

 .............................................................   6

 ..........................................  

7

 ................................................................   8

5-1.  Block Diagram - MAIN Section - ...................................   9
5-2.  Block Diagram - HDMI PC Section - .............................   10
5-3.  Block Diagram - DISPLAY Section - .............................   11
5-4.  Block Diagram- AMP Section - ......................................   12
5-5.  Block Diagram - SMPS Section - ...................................   13
5-6.  Printed Wiring Board 

- MAIN Board (Component Side) - ................................   15

5-7.  Printed Wiring Board 

- MAIN Board (Conductor Side) - ..................................   16

5-8.  Schematic Diagram - MAIN Board (1/5) - .....................   17
5-9.  Schematic Diagram - MAIN Board (2/5) - .....................   18
5-10.  Schematic Diagram - MAIN Board (3/5) - .....................   19
5-11.  Schematic Diagram - MAIN Board (4/5) - .....................   20
5-12.  Schematic Diagram - MAIN Board (5/5) - .....................   21
5-13.  Printed Wiring Board- DCDC Board - ...........................   22
5-14.  Schematic Diagram - DCDC Board - .............................   22
5-15.  Printed Wiring Board 
 

- HDMI PC Board (Component Side)- ...........................   23

5-16.  Printed Wiring Board 
 

- HDMI PC Board (Conductor Side) - ............................   24

5-17.  Schematic Diagram - HDMI PC Board (1/2) - ...............   25
5-18.  Schematic Diagram - HDMI PC Board (2/2) - ...............   26
5-19.  Printed Wiring Board - DISPLAY and 
 

KEY-POWER Board - ....................................................   27

5-20.  Schematic Diagram - DISPLAY and 
 

KEY-POWER Board - ....................................................   28

5-21.  Printed Wiring Board- SMPS Board - ............................   29
5-22.  Schematic Diagram - SMPS Board - ..............................   30

 ...............................................   44

6-1. 

Case S ection ....................................................................   44

6-2.  Front Panel Section .........................................................   45
6-3.  Chassis Section ...............................................................   46

 ...............................   47

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE 
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS 
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT 
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS 
PUBLIÉS PAR SONY.

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)

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 fl ow) 
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 IC4500 ON THE DCDC 
BOARD
IC4500 on the DCDC board cannot exchange with single. When 
these parts on the DCDC board are damaged, exchange the
entire mounted board.

NOTE OF REPLACING THE IC3500 AND IC3501 ON THE 
HDMI RE MOUNT PC BOARD
IC3500 and IC3501 on the HDMI RE MOUNT PC board cannot 
exchange with single. When these parts on the HDMI RE MOUNT 
PC board are damaged, exchange the entire mounted board.

US

4-258-284-0[]

Canadian

4-258-284-1[]

AEP

4-258-284-2[]

Argentina

4-258-284-3[]

• 

This set can be disassembled in the order shown below.

Note: Follow the disassembly procedure in the numerical order given.

2  one screw
 (TAPPING)

2  one screw
 (TAPPING)

4  Lift up the case
 

1  four screws
 (TAPPING)

6 case

3

3

5