DOWNLOAD Sony HT-DDW7500 / HT-DDW8500 / STR-KM7500 Service Manual ↓ Size: 6.95 MB | Pages: 80 in PDF or view online for FREE

2010G08-1

© 

2010.07

•  STR-KM7500 is the receiver section in HT-DDW7500/DDW8500.

– Continued on next page –

Amplifi er section
Power Output
Models of area code SAF, AUS, E51, EA, CND
Stereo mode output (rated) (6 ohms, 1 kHz,
THD 1%)
 

100 W + 100 W

1)

Surround mode output (reference)

2)

 RMS 

output

FRONT: 

185 W per channel

1)

(with SS-MSP7500)

CENTER: 185 

W

1)

(with SS-CNP7500)

SURROUND: 

185 W per channel

1)

(with SS-SRP7500)

SURROUND BACK: 185 W per channel

1)

(with SS-SRP7500)

1)

 Measured under the following conditions:

E51, SAF

240 V AC, 50 Hz

EA

127 V AC, 60Hz

AUS

230 V AC, 50 Hz

CND

120 V AC, 60Hz

2)

  Reference power output for front, center, sur-

round and surround back speakers. Depending 
on the sound fi eld settings and the source, there 
may be no sound output.

Inputs
  Analog 

Sensitivity: 800 mV/50 
kohms

  Digital (Coaxial) 

Impedance: 75 ohms

Outputs (Analog)
  AUDIO OUT 

Voltage: 800 mV/10 kohms

  SUBWOOFER 

Voltage: 2 V/1 kohm

Tone
  Gain levels 

±6 dB, 1 dB step

Reproduction frequency range:
   

28 – 20,000 Hz

FM tuner section
Tuning range 

87.5 – 108.0 MHz

Antenna 

FM wire antenna

Antenna terminals 

75 ohms, unbalanced

Intermediate frequency
  

10.7 MHz

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; 7,003,467; 7,212,872 & other 

U.S. and worldwide patents issued & pending. DTS, DTS Digital Surround, ES, and Neo:6 are registered trademarks and the DTS logos, Symbol and 
DTS 96/24 are trademarks of DTS, Inc. © 1996-2007 DTS, Inc. All Rights Reserved.

This receiver incorporates High-Defi nition Multimedia Interface (HDMITM) technology.
HDMI, the HDMI logo and High-Defi nition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.

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

“BRAVIA” and 

 are trademarks of Sony Corporation.

AM tuner section
Tuning range

10 kHz step        9 kHz step

E51, AUS, CND

530 –                  531 –
1,710 kHz          1,710 kHz

SAF

530 –                  531 –
1,610 kHz          1,602 kHz

EA

531 –
1,602 kHz

Antenna (aerial) 

Loop antenna (aerial)

Intermediate frequency

450 kHz

Video section
Inputs/Outputs
Video: 

1 Vp-p, 75 ohms

COMPONENT VIDEO:

Y: 1 Vp-p, 75 ohms
PB/CB: 0.7 Vp-p, 75 ohms
PR/CR: 0.7 Vp-p, 75 ohms
80 MHz HD Pass Through

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 

Design and specifi cations are subject to change 
without notice.

The area code of the receiver you purchased is
shown on the lower right 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”.

DVD IN

BD IN

OUT

DCSV
50mA MAX

OUT

OUT

D BACK

SURROUND

FRONT

Area code

General
Power requirements

AUS

230 V AC, 50 Hz

SAF

230 – 240 V AC, 50/60 Hz

E51

120/220/240 V AC, 50/60 Hz

CND

120 V AC, 60Hz

EA

120 – 127/220/
230 – 240 V AC 50/60Hz

Power output (DIGITAL MEDIA PORT)
  DC OUT: 

5 V, 0.7 A MAX

System Control output
  DC OUT: 

5 V, 50mA MAX

Power consumption  

• STR-KM7500
Area code

Power consumption

AUS, E51, CND, SAF,

EA

220W

• TA-KMSW500
Area code

Power consumption

AUS, E51,SAF, EA

160W

CND

190W

Power consumption (during standby mode)

0.3 W (when “CTRL:
HDMI” in HDMI menu is 
set to “CTRL OFF”)

Dimensions (width/height/depth) including 
projecting parts and controls (Approx.)
  Receiver 

430 × 158 × 342 mm
(17 × 6 1/4 × 13 1/2 in)

 Power 

amplifi er 

430 × 158 × 332 mm
(17 × 6 1/4 × 13 1/8 in)

Mass (Approx.)
  Receiver 

8.0 kg (17 lb 11 oz)

 Power 

amplifi er 

6.6 kg (14 lb 9 oz)

• Abbreviation
  AUS   : Australian model
  CND  : Canadian model
  EA 

: Saudi Arabia model

  E51   : Chilean and Peruvian models
  SAF  : South African model

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 viscou-s (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  IC3511  AND  IC3513  ON  
THE  HDMI  BOARD
IC3511 and IC3513 on the HDMI board cannot exchange with sin-
gle. When IC3511 and IC3513 on the HDMI board are damaged, 
exchange the entire mounted board.

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.

SERVICING  NOTES............................................. 3

2-1.   Disassembly Flow .............................................................. 4
2-2.   Case .................................................................................... 4
2-3.   Back Panel Block ............................................................... 5
2-4.   Front Panel Block .............................................................. 5
2-5.   Main Block ........................................................................ 6
2-6.   Heatsink Block, Main Board ............................................. 6

TEST  MODE .......................................................... 7

ELECTRICAL  CHECK ......................................... 9

5-1.  Block Diagram — Display Section — .............................11
5-2.  Block Diagram — Video Section — ............................... 12
5-3.  Block Diagram — HDMI Section — .............................. 13
5-4.  Block Diagram — Standby dcdc Section — ................... 14
5-5.  Block Diagram — Digital (1/2) Section — ..................... 15
5-6.  Block Diagram — Digital (2/2) Section — ..................... 16
5-7.  Block Diagram — Connection Section — ...................... 17
5-8.  Block Diagram — Main Section — ................................ 18
5-9.  Printed Wiring Board — Main Board — ......................... 20
5-10.  Schematic Diagram — Main Board (1/4) — ................... 21
5-11.  Schematic Diagram — Main Board (2/4) — ................... 22
5-12.  Schematic Diagram — Main Board (3/4) — ................... 23
5-13.  Schematic Diagram — Main Board (4/4) — ................... 24
5-14.  Printed Wiring Board — Video Board — ........................ 25
5-15.  Schematic Diagram — Video Board — ........................... 26
5-16.  Printed Wiring Board — Video 2 Board —. .................... 27
5-17.  Schematic Diagram — Video 2 Board — ........................ 28
5-18.  Printed Wiring Board — HDMI Board (1/2) — .............. 29
5-19.  Printed Wiring Board — HDMI Board (2/2) —  ............. 30
5-20.  Schematic Diagram — HDMI Board (1/2) — ................. 31
5-21.  Schematic Diagram — HDMI Board (2/2) — ................. 32
5-22.  Printed Wiring Board — Standby DCDC Board — ........ 33
5-23.  Schematic Diagram — Standby DCDC Board — ........... 34
5-24.  Printed Wiring Board — Display Board — ..................... 35
5-25.  Schematic Diagram — Display Board — ........................ 36
5-26.  Printed Wiring Board — Digital Board (1/2) — ............. 37
5-27.  Printed Wiring Board — Digital Board (2/2) — ............. 38
5-28.  Schematic Diagram — Digital Board (1/4) — ................ 39
5-29.  Schematic Diagram — Digital Board (2/4) — ................ 40
5-30.  Schematic Diagram — Digital Board (3/4) — ................ 41
5-31.  Schematic Diagram — Digital Board (4/4) — ................ 42
5-32.  Printed Wiring Board — Connection Board — ............... 43
5-33.  Schematic Diagram — Connection Board — .................. 44
5-34.  Printed Wiring Board — Headphone Board — ............... 45
5-35.  Schematic Diagram — Headphone Board — .................. 45
5-36.  Printed Wiring Board — Power Key Board — ............... 45
5-37.  Schematic Diagram — Power Key Board — .................. 45
5-38.  Printed Wiring Board — Thermal Sensor Board — ........ 46
5-39.  Schematic Diagram — Thermal Sensor Board — ........... 46
5-40.  Printed Wiring Board — AC Select Board — ................. 47
5-41.  Schematic Diagram — AC Select Board — .................... 47

6-1.  Front Panel Section .......................................................... 61
6-2.  Back Panel Section .......................................................... 62
6-3. Main 

Section 

.................................................................... 63

•  This set can be disassembled in the order shown below.

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

1

u 8)

4

2

u 8)

2

u 8)

3

3