Sony STR-KM5500 User manual

SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony EMCS (Malaysia) PG Tec
STR-KM5500
SPECIFICATIONS
MULTI CHANNELAV RECEIVER
9-890-520-03
2009K80-1
© 2009.11
E Model
Ver. 1.2 2009.11
• STR-KM5500 is the receiver section in HT-DDW5500.
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. © 1996-2008 DTS, Inc. All Rights Reserved.
This receiver incorporates High-Definition Multimedia Interface (HDMI ) technology.
HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks
of HDMI Licensing LLC.
TM
– Continued on next page –
Amplifier section
sReceiver (STR-KM5500)
Power Output
Models of area code SP, E51, AR, TH, SAF,
EA, MY
Stereo mode output (rated) (6 ohms, 1 kHz, 
THD 1%)
100 W + 100 W1)
90 W + 90 W2)
Surround mode output (reference)3)
RMS output
FRONT: 185 W per channel1)
170 W per channel2)
(with SS-MSP7500)
CENTER: 185 W1)
170 W2)
(with SS-CNP7500)
SURROUND: 185 W per channel1)
170 W per channel2)
(with SS-SRP7500)
SURROUND BACK:
185 W1)
170 W2)
(with SS-SRP7500)
1)Measured under the following conditions:
2)Measured under the following conditions:
Area code Power requirements
E51, SP, SAF, MY 240 V AC, 50 Hz
EA 127 V AC, 60 Hz
AR, TH 230 V AC, 50 Hz
Area code Power requirements
AR, TH 220 V AC, 50 Hz
3)Reference power output for front, center, surround
and surround back speakers. Depending on the
sound field 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
AM tuner section
Tuning range
Area code Tuning scale
10 kHz step 9 kHz step
AR, E51 530 – 
1,710 kHz
531 – 
1,710 kHz
SP, SAF, MY, TH 530 – 
1,610 kHz
531 – 
1,602 kHz
–135–AE 
1,602 kHz

STR-KM5500
2
1. SERVICING NOTES ............................................. 3
2. GENERAL .................................................................. 4
3. DISASSEMBLY
3-1. Disassembly Flow .......................................................... 11
3-2. Case................................................................................. 11
3-3. Back Panel Section,
Video Standby Supply Board Section............................. 12
3-4. Front Panel Section ........................................................ 12
3-5. Digital AB Board............................................................ 13
3-6. Main Board Section........................................................ 13
4. TEST MODE ............................................................ 14
5. ELECTRICAL CHECK ......................................... 16
6. DIAGRAMS
6-1. Block Diagram - TUNER/AUDIO Section -.................. 18
6-2. Block Diagram - DIGITALAB Section -....................... 19
6-3. Block Diagram - VIDEO Section -................................. 20
6-4. Block Diagram - HDMI SW Section -............................ 21
6-5. Block Diagram - KEY/DISPLAY Section -.................... 22
6-6. Block Diagram - POWER Section -............................... 23
6-7. Printed Wiring Board - MAIN Board -........................... 25
6-8. Schematic Diagram - MAIN Board (1/3) -..................... 26
6-9. Schematic Diagram - MAIN Board (2/3) -..................... 27
6-10. Schematic Diagram - MAIN Board (3/3) -..................... 28
6-11. Printed Wiring Board
- DIGITALAB Board (Side A) - .................................... 29
6-12. Printed Wiring Board
- DIGITALAB Board (Side B) - .................................... 30
6-13. Schematic Diagram - DIGITALAB Board (1/3) -.......... 31
6-14. Schematic Diagram - DIGITALAB Board (2/3) -.......... 32
6-15. Schematic Diagram - DIGITALAB Board (3/3) -.......... 33
6-16. Printed Wiring Boards
- VIDEO STANDBY SUPPLY Section -........................ 34
6-17. Schematic Diagram
- VIDEO STANDBY SUPPLY Section -........................ 35
6-18. Printed Wiring Board - HDMI SW Board -.................... 36
6-19. Schematic Diagram - HDMI SW Board -....................... 37
6-20. Printed Wiring Boards
-
VIDEO2 DCAC, HEADPHONE Section -.................. 38
6-21. Schematic Diagram
-
VIDEO2 DCAC, HEADPHONE Section -.................. 39
6-22. Printed Wiring Boards - DISPLAY, POWER Section -.. 40
6-23. Schematic Diagram - DISPLAY, POWER Section -...... 41
6-24. Printed Wiring Boards
-
TEMP-SENSOR, CONNECTION Section -............... 42
6-25. Schematic Diagram
-
TEMP-SENSOR, CONNECTION Section -............... 42
6-26. Printed Wiring Boards
-
AC SELECT Section - ................................................. 43
6-27. Schematic Diagram
-
AC SELECT Section - ................................................. 43
7. EXPLODED VIEWS
7-1. Case................................................................................. 55
7-1. Front Panel Section......................................................... 56
7-2. Back Panel Section ......................................................... 57
7-3. Chassis Section............................................................... 58
8. ELECTRICAL PARTS LIST .............................. 59
TABLE OF CONTENTS
Design and specifications are subject to change
without notice.
Halogenated flame retardants are not used in
the certain printed wiring boards.
• Abbreviation
AR : Argentina model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MY : Malaysia model
SAF : SouthAfrican model
SP : Singapore model
TH : Thai model
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE 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.
Antenna Loop antenna
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
HDMI Video4)5)
4)The TV output resolution will depends on the
capability of TV and component.
5)Not support Deep Color.
General
Power requirements
Area code Power requirements
SP, SAF, MY 230 – 240 V AC, 50/60 Hz
Power output (DIGITAL MEDIA PORT)
DC OUT: 5 V, 0.7 A MAX
System Control output
DC OUT: 5 V, 50mA MAX
Power consumption 200 W (STR-KM5500)
160 W (TA-KMSW500)
Power consumption (during standby mode)
0.3 W
Dimensions (width/height/depth) including
projecting parts and controls (Approx.)
Receiver 430 × 158 × 342 mm
Power amplifier 430 × 158 × 332 mm
Mass (Approx.)
Receiver 7.6 kg
Power amplifier 6.6 kg
E51 120/220/240 V AC,
50/60 Hz
AR, TH 220 – 230 V AC, 50/60 Hz
EA 120 – 127/220/240 V AC,
50/60 Hz
Ver. 1.1

STR-KM5500
3
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 viscou-s (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 IC1131 ON THE DIGITAL
AB BOARD
IC1131 on the DIGITAL AB board cannot exchange with single.
When IC1131 on the DIGITAL AB board is 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
damaged by heat.
Model Part No.
Singapore and Malaysia models 4-126-472-0[]
Argentina model 4-126-472-1[]
Thai model 4-126-472-2[]
Chilean and Peruvian models 4-126-472-3[]
South African model 4-126-472-5[]
Saudi Arabian model 4-126-472-6[]
MODEL IDENTIFICATION
Part NO.
– Rear View –
Ver. 1.1

STR-KM5500
4
SECTION 2
GENERAL
Description and location of parts
Receiver
Front panel
MULTI STEREOGAME
NIGHT MODE
PHONES
MOVIE
A.F.D.
AUTO CAL MIC VIDEO L AUDIO R
VIDEO 2 IN
MASTER VOLUMEINPUT SELECTOR
MUSIC


  
   
Name Function
" /
(on/standby)
Press to turn the receiver
on or off (page 30, 37, 38,
55, 64).
#INPUT
SELECTOR
Turn to select the input
source to play back (page
35, 37, 38, 61, 63).
$Display The current status of the
selected component or a
list of selectable items
appears here (page 7).
%Remote sensor Receives signals from
remote commander.
&MASTER
VOLUME
Turn to adjust the volume
level of all speakers at the
same time (page 35, 36,
37, 38).
'VIDEO 2 IN jacks Connect to a portable
audio/video component
such as a camcorder or
video game (page 26, 35).
(AUTO CAL MIC
jack
Connects to the supplied
optimizer microphone for
the Auto Calibration
function (page 31).
)A.F.D. Press to select a sound
field (page 50).
MOVIE
MUSIC
GAME
MULTI STEREO
MULTI STEREO
lamp
Lights up when multi
stereo sound field is
activated.
*NIGHT MODE Press to enjoy sound
effects for watching movie
at night (page 41).
NIGHT MODE
lamp
Lights up when NIGHT
MODE is activated.
+PHONES jack Connects to headphones
(page 69).
This section is extracted
from instruction manual.

STR-KM5500
5
About the indicators on the display
LFE MEM D.RANGE SLEEP FM AM ST HDMI COAX OPT
LC
SL S
SB
R
SR
SW
PL II x
DTS -ES
96/24
NEO:6
D EX


RB
Name Function
"SW Lights up when the audio signal
is output from the
SUBWOOFER jack.
#LFE Lights up when the disc being
played back contains an LFE
(Low Frequency Effect)
channel and the LFE channel
signal is actually being
reproduced.
$D.RANGE
Lights up when dynamic range
compression is activated (page 42).
%SLEEP Lights up when the sleep timer
is activated.
&Input
indicators
HDMI
COAX
OPT
Light up to indicate the current
input.
The receiver recognizes a
component connected via an
HDMI IN jack.
Lights up when DVD input is
selected if INPUT MODE is set
to “AUTO” and the source
signal is a digital signal being
input through the COAXIAL
jack.
Lights up when BD input is
selected. However, “NO
INPUT” appears on the display
if no digital signal is input
through the OPTICAL jack.
“OPT”alsolightsupwhenSAT
input is selected if INPUT
MODE is set to “AUTO” and
the source signal is a digital
signal being input through the
OPTICAL jack.
'NEO:6 Lights up when DTS Neo:6
Cinema/Music decoder is
activated.
(Dolby
Pro Logic
indicators
PL
PLII
PLIIx
Lights up one of the respective
indicators when the receiver
applies Dolby Pro Logic
processing to 2 channel signals
in order to output the center and
surround channel signals.
Dolby Pro Logic
Dolby Pro Logic II
Dolby Pro Logic IIx
Note
Dolby Pro Logic IIx decoding
does not function for DTS
format signals or for signals
with a sampling frequency of
more than 48 kHz.
Name Function

STR-KM5500
6
Name Function
)DTS(-ES)
indicators
DTS
DTS-ES
DTS 96/24
LightupwhenDTSorDTS-ES
signals are input.
Lights up when the receiver is
decoding DTS signals.
Lights up when the receiver is
decoding DTS-ES signals.
Lights up when the receiver is
decoding DTS 96/24 (96 kHz/
24 bit) signals.
Note
When playing a DTS format
disc, be sure that you have made
digital connections and that
INPUT MODE is not set to
“ANALOG” (page 59).
*Dolby Digital
Surround
indicators
D
DEX
Lights up one of the respective
indicators when the receiver is
decoding the corresponding
Dolby Digital format signals.
Dolby Digital
Dolby Digital Surround EX
Note
When playing a Dolby Digital
format disc, be sure that you
have made digital connections
and that INPUT MODE is not
set to “ANALOG”.
+Tuning
indicators
MEM
FM
AM
ST
Lights up when the receiver
tunes in radio stations, etc.
A memory function, such as
Preset Memory (page 57), etc.,
is activated.
FM band is selected.
AM band is selected.
Stereo broadcast.
Name Function
,Playback
channel
indicators
L
R
C
SL
SR
S
SB
The letters (L, C, R, etc.)
indicate the channels being
played back. The boxes around
the letters vary to show how the
receiver downmixes the source
sound.
Front Left
Front Right
Center (monaural)
Surround Left
Surround Right
Surround (monaural or the
surround components obtained
by Pro Logic processing)
Surround back (the surround
back components obtained by
6.1 channel decoding)
Example:
Recording format (Front/
Surround): 3/2.1
Sound Field: A.F.D. AUTO
LFE
LC
SL
R
SR
SW

STR-KM5500
7
$VIDEO/AUDIO INPUT/OUTPUT
section
AUDIO IN/
OUT jacks
Connects to a VCR,
DVD player, etc.
(page 19, 24, 25,
26).
VIDEO IN/
OUT* jacks
%SYSTEM CONTROL INPUT/OUTPUT
section
SYSTEM
CONTROL
OUT jack
Connects to the
power amplifier
(page 18).
White (L)
Red (R)
Yellow
OUT
DC5V
50mA MAX
SYSTEM CONTROL
&SPEAKERS section
Connects to the
supplied speakers
(page 16).
'AUDIO INPUT/OUTPUT section
AUDIO IN/
OUT jacks
Connects to a Super
Audio CD player,
etc. (page 20).
AUDIO OUT
jack
Connects to the
power amplifier
(page 18).
White (L)
Red (R)
Black
*You can watch the selected input image when you
connect the HDMI OUT or MONITOR OUT jack
to a TV (page 19).
(COMPONENT VIDEO INPUT/
OUTPUT section
Y, PB/CB,
PR/CRIN/
OUT* jacks
Connects to a DVD
player, TV, satellite
tuner, etc. You can
enjoy high quality
image (page 19, 24,
25).
)DMPORT
DMPORT
jack
Connects to a
DIGITAL MEDIA
PORT adapter
(page 60).
Green
(Y)
Blue 
(PB/CB)
Red 
(PR/CR)
Rear panel
"DIGITAL INPUT/OUTPUT section
OPTICAL
IN jacks
Connects to a DVD
player, etc. The
COAXIAL jack
provides a better
sound quality (page
24, 25).
COAXIAL IN
jack
HDMI IN/
OUT* jacks
Connects to a DVD
player, etc. The
image and the sound
are output to a TV
(page 22).
#ANTENNA section
FM
ANTENNA
jack
Connects to the
supplied FM wire
antenna (page 28).
AM
ANTENNA
terminals
Connects to the
supplied AM loop
antenna (page 28).
Y
P
B
/
C
B
P
R /
C
R
L
R



 
SAT
IN
BD
IN
OPTICAL
DVD
IN
COAXIAL
DIGITAL
DC5V
0.7A MAX
DMPORT
AUDIO
IN
AUDIO
OUT
AUDIO
IN
SA-CD / CD / CD-R
TV
SAT IN DVD IN BD IN MONITOR
OUT
COMPONENT VIDEO
ANTENNA
VIDEO
IN
VIDEO
IN
VIDEO
IN
VIDEO
OUT
VIDEO
OUT
AUDIO
OUT
AUDIO
OUT
AUDIO
IN
AUDIO
IN
AUDIO
IN
SAT DVD VIDEO 1
SUBWOOFER
MONITOR
AM
SURROUND BACK SURROUND
CENTER
LR
FRONT
R
L
SPEAKERS
FRONT: ONLY FOR SS-MSP7500
CENTER: ONLY FOR SS-CNP7500
SURROUND: ONLY FOR SS-SRP7500
OUT
DC5V
50mA MAX
SYSTEM CONTROL
ONLY FOR TA-KMSW500
HDMI
DVD IN BD IN OUT
CONNECT TO
DIGITAL
INPUT
FOR AUDIO

STR-KM5500
8
You can use the supplied remote to operate the
receiver and to control the Sony audio/video
components that the remote is assigned to
operate. For details, see “Changing button
assignments” (page 64).
RM-AAU027
Remote commander
123
46
78
0/10 ENTER
9
SYSTEM STANDBY
TV INPUT
SLEEP DMPORT
VIDEO1 VIDEO2 BD DVD
2CH A.F.D.
TV CH –
PRESET –
TV CH +
PRESET +
TUNING –
TV
TUNING +
FM MODE
MOVIE MUSIC
AMP MENU
CLEAR
DISPLAY MUTING
TV VOL
MASTER VOL
DVD/BD
MENU
AUTO CAL
D.TUNING
D.SKIP
SAT TV SA-CD/CD TUNER


).N
9Y
 

5
REPLAY ADVANCE
MEMORY
0
RETURN/EXIT
>10/
-/--
RH
RK
RL
RI
RM
X
XB
RG







R

RE
RT
RB

TV

AV

TOOLS/
OPTIONS
MENU/HOME
Name Function
"TV /
(on/standby)
Press TV /and TV (/)at
thesametimetoturntheTVon
or off.
AV /
(on/standby)
Press to turn on or off the Sony
audio/video components that
the remote is assigned to
operate.
If you press /(#)atthe
same time, it will turn off the
receiver and other components
(SYSTEM STANDBY).
Note
The function of the AV /
switch changes automatically
each time you press the input
buttons ($).
# /
(on/standby)
Press to turn the receiver on or
off.
To turn off all components,
press /and AV /(")at
the same time (SYSTEM
STANDBY).
$Input
buttons
Press one of the buttons to
select the component you want
to use. When you press any of
the input buttons, the receiver
turns on. The buttons are
factory assigned to control Sony
components. You can change
the button assignments
following the steps in
“Changing button assignments”
on page 64.
%2CH Press to select a sound field.
A.F.D.
MOVIE
MUSIC
&DVD/BD
MENU
Press to display the menu of the
DVD or Blu-ray disc on the TV
screen. Then, use 7,W,#,Cand
(1) to perform menu
operations.
'AUTO CAL Press to activate the Auto
Calibration function (page 32).
(D.TUNING Press to enter direct tuning
mode.
D.SKIP Press to skip a disc when using
a multi-disc changer.

STR-KM5500
9
Name Function
)AMP MENU Press to display the menu of
the receiver. Then, use 7,W,
#,Cand (1) to perform
menu operations.
*ENTER Press to enter the value after
selecting a channel, disc or
track using the numeric
buttons of the TV, VCR or
satellite tuner.
MEMORY Press to store a station.
+MUTING Press to turn off the sound
temporarily.
Press MUTING again to
restore the sound.
Press MUTING and TV (/)
at the same time to activate
the TV’s muting function.
,TV VOL 
+a)/–
Press TV VOL +/– and TV
(/) at the same time to adjust
the TV volume level.
MASTER
VOL +a)/–
Press to adjust the volume
level of all speakers at the
same time.
-MENU/HOME Press to display the menu of
the VCR, DVD player,
satellite tuner or Blu-ray disc
player on the TV screen.
Press MENU/HOME and TV
(/) at the same time to
display the TV’s menu. Then,
use 7,W,#,Cand (1)to
perform menu operations.
./b) Press to skip a track of the CD
player, DVD player or Blu-
ray disc player.
REPLAY /
ADVANCE
Press to replay the previous
sceneorfastforwardthe
current scene of the VCR,
DVD player or Blu-ray disc
player.
N/.b) Press to
– search tracks in the forward/
reverse direction of the
DVD player.
– start fast forward/rewind of
the VCR, CD player or 
Blu-ray disc player.
)a)b) Press to start playback of the
VCR, CD player, DVD player
or Blu-ray disc player.


Name Function
9b) Press to pause playback or
recording of the VCR, CD
player, DVD player or Blu-
ray disc player. (Also starts
recording with components in
recording standby.)
Yb) Press to stop playback of the
VCR, CD player, DVD player
or Blu-ray disc player.
TV CH +/– Press TV CH +/– and TV (/)
atthesametimetoselect
preset TV channels.
PRESET +/– Press to select
– preset stations.
– preset channels of the VCR
or satellite tuner.
TUNING +/– Press to scan a station.
FM MODE Press to select the FM
monaural or stereo reception.
/TV Press TV and the button with
orange printing at the same
time to enable the TV
operation.
0RETURN/
EXIT 0
Press to
– return to the previous menu.
– exit the menu while the
menu or on-screen guide of
the VCR, DVD player,
satellite tuner or Blu-ray
disc player is displayed on
the TV screen.
Press RETURN/EXIT 0
and TV (/)atthesametime
to return to the previous menu
or exit the TV’s menu while
the menu is displayed on the
TV screen.
1

7/W/#/C
After pressing DVD/BD
MENU (&), AMP MENU
()) or MENU/HOME (-),
press 7,W,#or Cto select the
settings. Then, press to
enter the selection if you have
pressed DVD/BD MENU or
MENU/HOME previously.
Press also to enter the
selection of the receiver,
VCR, satellite tuner, CD
player, DVD player or Blu-
raydiscplayer.

STR-KM5500
10
a)The tactile dot is attached to these buttons (The
number 5, MASTER VOL +/TV VOL +, )).
Use as a mark of operation.
b)This button is also available for DIGITAL
MEDIA PORT adapter operation. For details on
the function of the button, see the operating
instructions supplied with the DIGITAL MEDIA
PORT adapter.
Notes
• Some functions explained in this section may not
work depending on the model.
• The above explanation is intended to serve as an
example only. Therefore, depending on the
component, the above operation may not be
possible or may operate differently than described.
Name Function
2DISPLAY Press to select information
displayed on the TV screen of
the VCR, satellite tuner, CD
player, DVD player or Blu-
ray disc player.
Press DISPLAY and TV (/)
at the same time to display
TV’s information on the TV
screen.
3TOOLS/
OPTIONS
Press to display and select the
options of the DVD player or
Blu-ray disc player.
Press TOOLS/OPTIONS and
TV (/) at the same time to
display options applicable to
the Sony TV.
4-/-- Press to select the channel
entry mode, either one or two
digits of the VCR.
Press -/-- and TV (/)atthe
same time to select the
channel entry mode, either
one or two digits of the TV.
>10/YPress to select
– track numbers over 10 of the
VCR, satellite tuner or CD
player.
– channel numbers of the
Digital CATV terminal.
CLEAR Press to clear a mistake when
you press the incorrect
numeric button.
5Numeric
buttons
(number 5a))
Press to
– preset/tune to preset
stations.
– select track numbers of the
CD player, DVD player or
Blu-ray disc player. Press 
0/10 to select track number
10.
– select channel numbers of
the VCR or satellite tuner.
Press the numeric buttons and
TV (/) at the same time to
select the TV channels.
6TV INPUT Press TV INPUT and TV (/)
at the same time to select the
inputsignal(TVinputor
video input).
SLEEP Press to activate the Sleep
Timer function and the
duration which the receiver
turns off automatically.

STR-KM5500
11
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE
SET
3-5. DIGITAL AB BOARD
(Page 13)
3-6. MAIN BOARD SECTION
(Page 13)
3-2. CASE
(Page 11)
3-3. BACK PANEL SECTION
(Page 12)
3-4. FRONT PANEL SECTION
(Page 12)
Atwo screws
(+BVST 4 ×8) (black) Cthree screws
(+BVTP 3 ×8)
Dcase
Btwo screws
(+BVST 4 ×8) (black)

STR-KM5500
12
3-3. BACK PANEL, VIDEO STANDBY SUPPLY BOARD, AC SELECT BOARD
3-4. FRONT PANEL SECTION
ACNP901 (2P)
DCNP240 (3P)
BCNP902 (2P)
3
CNP940 (3P)
RBACK PANEL
KCNS203 (6P)
MVIDEO STANDBY
SUPPLY board
LCNS271 (18P)
Econnector, FFC (9P)
(CNS507)
Fconnector, FFC/FPC (9P)
(CNS510)
Gfive screws
(+BVTP 3 ×8)
Hfive screws
(+BVTP 3 ×8)
Ifour screws
(+BVTP 3 ×8)
Jfour screws
(+BVTP 3 ×8)
(Chilean and Peruvian,
Saudi Arabia model only)
Oconnector
(CNP903)
Pconnector
(CNP905)
QAC SELECT board
Ntwo screws
(+BVTP 3 ×8)
Ffront panel section
Aclip
BCNP790 (4P)
CCNP432 (6P)
Efive screws
(+BVTP 3 x 8)
Dconnector, FFC/FPC (21P)
(CNS503)

STR-KM5500
13
3-5. DIGITAL AB BOARD
CDIGITAL AB board
BCNP410 (16P)
ACNP411 (15P)
3-6. MAIN BOARD SECTION, TEMP-SENSOR BOARD
1 pt
HMAIN board section
CCNP510 (5P)
Etwo screws
(+BVTP 3 x 8)
ACNP920 (5P)
BCNP910 (4P)
Dtwo screws
(+BVTP 3 x 8)
Fscrew
(+BVTP 3 x 8)
GTEMP-SENSOR board

STR-KM5500
14
SECTION 4
TEST MODE
TUNER AM STEP CHANGE (9 kHz/10 kHz) MODE
(Chiliean and Peruvian models only)
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [?/1] button to turn on the main power.
2. Press [TUNER] repeatedly to select “AM”.
3. Press [AMP MENU].
“1-LEVEL” appears on the display.
4. Press [V/v] repeatedly to select “4-TUNER”.
5. Press [ ] or [b] to enter the menu.
6. Press [V/v] repeatedly to select “AM STEP”.
7. Press [ ] or [b] to enter the parameter.
8. Press [V/v] repeatedly to select the “AM” tuning scale you
want.
Note
All AM preset stations will be erased when you change the tuning scale.
FL CHECK MODE
All fluorescent segments are tested. When this test is activated, all
segments turn on at the same time, then each segment turns on one
after another.
Procedure:
1. When pressing the [MULTI STEREO] and [A.F.D.] buttons,
press the [?/1] button to turn on the main power.
2. All segments turn on.
L
SP B
EQ
S-AIR MEM RDS D.RANGE SLEEP FM AM
m ft.
CR
SL
S SR
SB SBRSBL
SW
LFE
SP A
 DEX
 PL II x
ST HDMI
SAT CAT
OPTCOAX
ANALOG
k Hz DTS-ES
NEO:696/24
dB
MHz
3. Turn the [INPUT SELECTOR] dial.
4. Test pattern 1 turn on.
EQ
MEM D.RANGE FM
m
SR
SB SBRSBL
SW
LFE
 DEX
II x
ST
SAT CAT
OPT
DTS
96/24
dB
MHz
5. Turn the [INPUT SELECTOR] dial once again.
6. Test pattern 2 turn on.
L
SP B
S-AIR RDS SLEEP AM
ft.
CR
SL
S
SP A
 PL
HDMI COAX
ANALOG
k Hz -ES
NEO:6
7. Turn the [INPUT SELECTOR] dial once again. All segments
turn off.
8. Every turning of the [INPUT SELECTOR] dial turns on each
segment one after another on the same order.
S.F. CLEAR MODE
The preset sound filed is cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
1. While pressing the [A.F.D.] button, press the [?/1] button to
turn on the main power.
2. The message “S.F CLR.” appears and initialization is per-
formed.
VERSION CHECK MODE
When this mode is used the model, the destination and the software
version number are displayed.
Procedure:
1. While pressing the [NIGHT MODE] and [GAME] buttons, press
the [?/1] button to turn on the main power.
2. The model, the distination and the software version number
appear.
KEY CHECK MODE
This mode is used to check the key.
Procedure:
1. While pressing the [MUSIC] and [MOVIE] buttons, press the
[?/1] button to turn on the main power.
2. The message “REST 06” appears.
3. Every pressing of any button other than the [?/1] button counts
down the buttons. The buttons which are already counted once
are not counted again.
4. When all buttons are pressed, the message “REST 00” ap-
pears.
SWAP ALL MODE
When this mode is used, output the audio signal of front L/R chan-
nel to all channel.
Procedure:
1. While pressing the [MULTI STEREO] and [MOVIE] buttons,
press the [?/1] button to turn on the main power.
2. The message “SWP. ALL” appears.
3. After a few seconds, “SWAP” appears. (No change while dis-
played.)
SHIPMENT MODE
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. While pressing the [NIGHT MODE] and [MULTI STEREO] but-
tons, press the [?/1] button to turn on the main power.
2. The message “CLEARING” appears.
DCAC FACTORY TEST MODE
DCAC Factory Test mode have two stages:
1. DCAC DSP Data Line Checking
2. DCAC board Checking
DSP Data Line
Check
Start Pass Pass
Auto Cal Mic
Check END
Factory Test System Setup
SPK Front Left
DCAC MIC
Receiver
1. When power off :
While pressing the [GAME] and [MOVIE] buttons, press the
[?/1] button to turn on the main power .
“DCAC FTM” appears.
Afterward, press the [NIGHT MODE] to start DCAC factory
test mode.

STR-KM5500
15
1. DCAC DSP Data Line Checking
After press the [TUNING MODE] button, DCAC Factory test
mode will start, below display will show:
“DCAC x” x = 1, 2, 3, 4
If there is error happen, below display will show:
“ERR SD0x” x = 1 →D1501 or R1530 problem
x = 2 →D1502 problem
x = 3 →D1503 problem
x = 4 →D1504 problem
2. DCAC board Checking
Connect front left speaker of the receiver and AUTO CAL
microphone. Turn [MASTER VOLUME] jog, there will be test
tone sound output from front left speaker, and the display will
change accordingly.
“AD - xxx” xxx = 0 to 255 (depends on loudness of test tone)
Note
When the value reaches more than 222, the test tone will muted
(for production line checking). Thus, the AD value will drop to 0.
To check the AD value again, power off the receiver and re-enter
the test mode.
VACS CONTROL TEST MODE
The VACS feature of the amplifier is turned off purposely.
Procedure:
1. While pressing the [MUSIC] and [A.F.D.] buttons, press the
[?/1] button to turn on the main power.
2. The message “VACS OFF” appears.
HISTORY MODE
The state that the set is used is memorized.
Procedure:
1. While depressing the [GAME] and the [A.F.D.] buttons
simultaneously, press the [?/1] button to turn on the main
power.
2. “HISTORY” appears.
3. Each time the [V] / [v] buttons on the remote commander is
pressed, the item is switched in order as follows.
Items
Protector Count COUNT XX
Total single power on time SXXXHXXM
Sound Field SND FLD
Input function FUNCTION
Input Mode INP MODE
Digital Select DIGI IN
Stream information STREAM
Signal configuration CO XXXXX
Headphone HP XXX
Volume VOL XXX
Bass Setting BASS XXX
Treble Setting TREB XXX
Front Level Setting F XXX
Center Level Setting CT XXX
Surround Left Level Setting SL XXX
Surround Right Level Setting SR XXX
Surround Back Level Setting SB XXX
Subwoofer Level Setting SW XXX
Total power on time TXXXHXXM
Muting status MUTE XXX
Power on counter (Rebox test mode) P.W. XXX
Protector Type PRT XXXX
Temperature when protect TEM XXXC
PROTECTOR AUTO OFF
*To disable auto off after protector occur.
Procedure:
1. While depressing the [NIGHT MODE] and the [MUSIC]
buttons simultaneously, press the power [?/1] button to turn
on the main power.
2. “PROTEVER” appears.

STR-KM5500
16
SECTION 5
ELECTRICAL CHECK
FM AUTO STOP CHECK
signal
generator 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 : 1 kHz
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 with
automatic 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.

STR-KM5500
17
SECTION 6
DIAGRAMS
• Circuit Boards Location
VIDEO 2 DCAC board
POWER KEY board
HP SUPPORT board
HEADPHONE board
DISPLAY board
DIGITAL AB board
MAIN board
HDMI SW board
VIDEO STANDBY SUPPLY board
CONNECTION board
AC SELECT board
(Chilean and Peruvian,
Saudi Arabia model only)
TEMP-SENSOR Board

STR-KM5500
STR-KM5500
1818
6-1. BLOCK DIAGRAM – TUNER/AUDIO Section –
C-CH
SR-CH
FR-CH
SL-CH
FL-CH
R-IN
L-IN
SW
SEL
C
SEL
SL
SEL
R-CH
R-CH
R-CH
DIR
FUNCTION SELECT
IC400
VCCVEE
+7V
SEL
SW
MCU
I/F
-7V
SW OUT
C OUT
SLOUT
FLOUT
78
92
89
SYSTEM
CONTROL
IC1101 (1/6)
SLATCH
91 TUNER_DATA
90 TUNER_CLK VOL_IC_DATA
VOL_IC_CLK
TUNER_SD
DO/SD/ST 24
DMPORTAMP
IC501
25
DMPORT_DET 26
63
64
12 8
10
11
75
14
13
18
17
SW-CH
16
71 70 68 69
SR OUT
FR OUT
72 72
56
55
44
43
48
47
35
34
52
51
15
SB
SEL
SB OUT
SB-CH
66
20
20
76
25
26
29
30
L
SEL
DMPORT_TX DMPORT_RX
DMPORT_TX
DET
L+
L–
DBUS+5V
3
21
R+
R– 5
67
+5.8V
42
59
60
+5V REG
IC1906
VIDEO+5V
R-CH 38
20
L-CH 39
1
23
7
MICAMP
IC181 J181
65
AM
TN1
FM/AM TUNER UNIT
L-CH
SD
CE
DO
DI
CL
TU+9V
FM 75Ω
COAXIAL
ANTENNA
R-CH
AUDIO IN
LR
VIDEO TVSA-CD/CD/CD-R
LR
J404 (1/2) J403 J401 (1/2)
-3 -4 -5 -6-1 -2 -3 -4-3 -4
IN IN
LR
AUDIOAUDIO DVDSAT
LR
IN IN
LR
J1302
DC5V
0.7AMAX
DMPORT
5
6
7
13
11
2
14
12
4
AUDIO OUT
LR
J404 (2/2)
VIDEO
-1 -2
AUDIO OUT
LR
J401 (2/2)
SA-CD/CD/CD-R
-1 -2
R
L
V
Video
• Signal path
:AUDIO (ANALOG)
: TUNER
• R-ch is omitted due to
same as L-ch.
DISPLAY
SECTION
(Page 22)
DIGITALAB
SECTION
(Page 19)
DIGITALAB
SECTION
(Page 19)
POWER
SECTION
(Page 23)
%
#
"
$

STR-KM5500
STR-KM5500
1919
6-2. BLOCK DIAGRAM – DIGITAL AB Section –
DSPIB DPSOA_DAI_P6
DPSOC_DAI_P8
DPSOB_DAI_P7
DOUT 979 DSPIA
78
NONAUDIO
AUDIO 33
XMCK
27
RMCK
16
97
DPFSCK
94
BCK IN
RBCK 17 89
LRCK IN
RLRCK 20 88
RDATA
64
70
65
DPSOB_DAI_P9 71
X1301
12.288MHz
CLKIN 142
XTAL 143
BCK OUT 87
LRCK OUT 86
99 20 18819
FLAG1
RERR
28
29
SCKI
6
BCK
8
LRCK
7
95 96 97 98
40 39 38 37 34
INPUT DATA
DEMODULATOR
Pa,Pb DETECTION LOCK
DETECTION
MICROPROCESSOR
I/F
C bit DETECTION 36 16
21
1
OUT
OPTICAL
RECEIVER
IC1352
IC1303
DIGITALAUDIO
I/F RECEIVER
IC1201
23 WAVE
SHAPER
IC1905
13 +3.3V
REG
IC1002
13 +1.2V
REG
SWITCH
IC1014
51
+1.2V VDDI
+3.3VVDDE
+3.3V
DIR
Temp Sensor 1
VDD
L-IN
+3.3V
+1.2V
+5.8V
IC2210
54 +5V
REG
+5V +7V
DIGITAL
DECIM.
FILTER
ADC
IC1401 DSP EX3
IC1501
ERROR
1
DATA0
DSP SPIDS
DSP SPICLK
DSP INT
MISO MOSI
CLK
CE
DI
DO
CL CE DI DO CKST
93
41
XMODE
94
CKSEL1
XMODE
5
8
2
TEMP
SENSOR
IC4903
46
Temp Sensor 2
2
TEMP
SENSOR
IC4902
44
XOUT
RX3
RX4
1
OUT
OPTICAL
RECEIVER
IC1351
10 RX6
XIN
D1101
SYSTEM
CONTROL
IC1101 (2/6)
ΔΣ
MOD.
XRST
1114
1215
MUTE
57
DCAC_INT
MDI
MC
ML
MUTE ML
12
13
MC
13
14
MD
DIN3 FLOUT
R-CH
VO3L
VO3R
VO1L
VO1R
VO2L
VO2R
926
25
8
7
2MCK
3BCK
LRCK
4
6CH DAC
IC1452
DAC
DIN2 SLOUT
R-CH
22
21
DAC
DIN1
10 DNC
C OUT
23
SW OUT
24
DAC
VO4L SB OUT
19
DAC
13 VINL
R-IN 14 VINR
CK Q
DAC
125 126121 127 15122
SPIDS RESET SPICLK FLAG0 MISO MOSI
4721
D1501 D1503 D1504 D1502
DVD
IN
DIGITAL
(COAXIAL)
BD IN
(OPTICAL)
J1301
SAT
IN
(OPTICAL)
X1302
25MHz
• Signal path
:AUDIO (ANALOG)
:AUDIO (DIGITAL)
• R-ch is omitted due to
same as L-ch.
TUNER/
AUDIO
SECTION
(Page 18)
TUNER/
AUDIO
SECTION
(Page 18)"
#

STR-KM5500
STR-KM5500
2020
6-3. BLOCK DIAGRAM – VIDEO Section –
CH1 IN1
CH2 IN1
CH3 IN1
CH1 IN2
CH1 IN3
CH2 IN2
CH3 IN2
CHI OUT
CH2 OUT
CH3 OUT
3
5
8
10
17
15
2 4
SW1 SW2
COMPONENT
SW1 COMPONENT SW2
24
75Ω
DRIVER
6dBAMP
22
75Ω
DRIVER
6dBAMP
20
75Ω
DRIVER
6dBAMP
23
PS
PS(V-MUTE)
614 4
13
5
3
1
75Ω
DRIVER
6dBAMP
15
3 1
75Ω
DRIVER
6dBAMP
+5V
REG
IC201
+5V-3
3 2
-5V
REG
IC202
-5V-3
COMP_S1
COMP_S2
V_SW2
V_SW3
V_MUTE
V_SW1
COMPONENT SW1
COMPONENT SW2
COMPOSITE SW2
COMPOSITE SW3
COMPOSITE SW4
PS(V-MUTE)
COMPOSITE SW1
SYSTEM CONTROL
IC1101 (3/6)
-5V -5V-3
+5V +5V-3
+15V
-15V
VOUT1
VOUT2
V-1,-2 -5V-3
V+1,+2+5V-3
VIN1
VIN4
VIN5
COMPOSITE SW4
COMPOSITE
SW1
COMPOSITE SW2 COMPOSITE SW3
SW4 SW1
2
SW5
10
SW2 SW3
INPUT SELECT
IC210
COMPONENT VIDEO SELECT
IC220
4
3
2
5
6
7V_SW4
9
1
CH2 IN3
12
CH3 IN3
13
Y
PB/CB
PR/CR
Y
PB/CB
PR/CR
J220 (1/2)
J221
BD
IN
DVD
IN
COMPONENT
VIDEO -5
-6
-7
-1
-2
-3
Y
PB/CB
PR/CR
SAT
IN
-1
-3
-4
J210 (1/2)
J211 (1/2)
VIDEO
IN
VIDEO
IN
-1
VIDEO
SAT
DVD
-1
VIDEO
IN
-2
D211
D210
Y
PR/CR
PB/CB
J220 (2/2)
MONITOR
OUT COMPONENT
VIDEO
-9
-10
-11
-2
J210 (2/2)
J211 (2/2)
VIDEO
OUT
VIDEO
-3
VIDEO
OUT
MONITOR
• Signal path
: VIDEO