HT-DDW830, STR-DE575, STR-K502, STR-K502P — Sony Audio Service Manual (repair manual)

Model
HT-DDW830 STR-DE575 STR-K502 STR-K502P
Pages
43
Size
14.35 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
ht-ddw830-str-de575-str-k502-str-k502p.pdf
Date

View Sony HT-DDW830 / STR-DE575 / STR-K502 / STR-K502P Service Manual online

STR-DE575/K502/K502P
US Model
STR-DE575/K502/K502P
Canadian Model
STR-DE575/K502P
E Model
Australian Model
STR-K502P
SERVICE MANUAL
FM STEREO FM-AM RECEIVER
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-873-862-12
2002G1600-1
© 2002.07
— Continued on next page —
SPECIFICATIONS
Ver 1.1  2002. 07
Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol ;  “AC-3” and “PRO LOGIC”
are trademarks of Dolby Laboratories Licensing Corporation.
AUDIO POWER
SPECIFICATIONS
POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION:
With 8 ohm loads, both
channels driven, from 20 -
20,000 Hz; rated 100
 
watts
per channel minimum RMS
power, with no more than
0.09% total harmonic
distortion from 250
milliwatts to rated output
(USA model only).
Amplifier section
(8 ohms 20 Hz - 20 kHz,
THD 0.09%)
100 W + 100 W
(8 ohms at 1 kHz, THD
0.7%)
Front
1)
: 100 W/ch
Center
1)
: 100 W
Surround
1)
: 100 W/ch
1) Depending on the sound field settings and
sources, there may be no sound output.
MULTI CH IN, CD,
MD/TAPE, DVD/
LD, TV/SAT,
VIDEO*, AUX:
10 Hz - 50 kHz +0.5/
–2 dB (with sound
field and equalizer
bypassed)
MULTI CH IN, CD,
DVD/LD, MD/
TAPE, TV/SAT,
VIDEO*, AUX:
Sensitivity:  250 mV
Impedance:  50
kilohms
S/N
a)
:  96 dB (A, 250
mV
b)
)
a) Input short.
b) Weighted network, input level.
DVD/LD (coaxial):
Sensitivity:  –
Impedance:  75 ohms
S/N:  100 dB (A, 20
kHz LPF)
(Optical):
Sensitivity:  –
Impedance:  –
S/N:  100 dB (A, 20
kHz LPF)
MD/TAPE, (OUT);
VIDEO*,
(AUDIO OUT):
Voltage:  250 mV,
Impedance:  10
kilohms
SUB WOOFER:
Voltage: 2 V
Impedance:  1
kilohms
PHONES:
Accepts low- and
high-impedance
headphones
±6 dB
DVD/LD, TV/SAT
48 kHz (TV/SAT, MD/
TAPE OPTICAL IN)
96 kHz (DVD/LD
OPTICAL IN,
COAXIAL IN)
Sampling Frequency
EQ
Outputs
Frequency response
Inputs (Analog)
Inputs (Digital)
Reference Power Output
Rated Power Output at Stereo mode
Photo : STR-DE575
2
STR-DE575/K502/K502P
0.5 % (50 mV/m, 400
kHz)
At 9 kHz:  35 dB
At 10 kHz:  40 dB
c) You can change the AM tuning interval to 9
kHz. After tuning in any AM station, turn
off the receiver. Hold down the TUNING +
button and press the 
?/1 button. All preset
stations will be erased when you change the
tuning interval. To reset the scale to 10 kHz,
repeat the procedure.
Video section
Video: 1 Vp-p 75 ohms
S-video***:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
Video: 1 Vp-p 75 ohms
S-video***:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
General
Tuner section:
PLL quartz-locked
digital synthesizer
system
Preamplifier section:
Low-noise NF type
equalizer
Power amplifier
section:
Pure-complementary
SEPP
FM tuner section
87.5 - 108.0 MHz
75 ohms, unbalanced
10.7 MHz
Mono: 18.3 dBf,
2.2 
µV/75 ohms
Stereo: 38.3 dBf
22.5 
µV/75 ohms
11.2 dBf, 1 
µV/75 ohms
Mono:  76 dB
Stereo:  70 dB
Mono:  0.3%
Stereo:  0.5%
45 dB at 1 kHz
30 Hz - 15 kHz +0.5/–2
dB
60 dB at 400 kHz
AM tuner section
With 10-kHz tuning
scale:
530 - 1710 kHz
c)
With 9-kHz tuning
scale:
531 - 1710 kHz
c)
Loop antenna
450 kHz
50 dB/m (at 1,000 kHz
or 999 kHz)
54 dB (at 50 mV/m)
120 V AC, 60 Hz
Models of area code U:
220W
In standby condition:
1 W
Models of area code CA:
315 VA
In standby condition:
1 W
1 switched, total
120 W/1A Max
430 
× 308.5 × 157.5 mm
(14.5 
× 10.4 × 5.3 in.)
including projecting
parts and controls
7.5 kg (16 lbs. 9 oz.)
7.4 kg (16 lbs. 6 oz.)
Design and specifications are subject
to change without notice.
• FM wire antenna (1)
• AM loop antenna (1)

• STR-DE575 only
• STR-K502 only
• Model of area code U only
   - Remote commander RM-U305 (remote) (1)
• Model of area code CA only
   - Remote commander RM-PP505 (remote) (1)
• Remote commander RM-U305 (remote) (1)
R6 (size-AA) batteries (2)
*** STR-DE575 only
Tuning range
Antenna terminals
Intermediate frequency
Sensitivity
Usable sensitivity
S/N
Harmonic distortion at 1 kHz
Separation
Frequency response
Selectivity
Tuning range
Antenna
Intermediate frequency
Usable sensitivity
S/N
Harmonic distortion
Selectivity
Inputs
Outputs
System
Supplied accessories
Mass (Approx.)
Dimensions
AC outlets 
Power consumption
Power requirements
3
STR-DE575/K502/K502P
SAFETY-RELATED COMPONENT WARNING!!
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 WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
    After correcting the original service problem, perform the
following safety checks 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
    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 2V AC range are suitable. (See
Fig. A)
SAFETY  CHECK-OUT
Parts No.
MODEL IDENTIFICATION
— BACK PANEL —
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS 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 PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
PARTS No.
4-232-240-0s
4-232-240-1s
4-232-240-3s
4-232-240-4s
4-232-240-5s
4-232-240-6s
4-232-240-7s
4-232-240-8s
MODEL
DE575 : US
DE575 : Canadian
K502P : US
K502P : Canadian
K502P : Australian
K502P : Singapore
K502P : Mexican
K502
: US
To Exposed Metal 
Parts on Set
0.15 
µF
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
4
STR-DE575/K502/K502P
TABLE OF CONTENTS
1. GENERAL
·········································································· 5
2. TEST MODE
······································································ 7
3. DIAGRAMS
3-1.
Circuit Boards Location ..................................................... 9
3-2.
Block Diagrams ................................................................ 10
• Main Section .................................................................. 10
• Display/Power Section ................................................... 11
3-3.
Printed Wiring Board – Digital Section – ........................ 12
3-4.
Schematic Diagram – Digital Section (1/3) – .................. 13
3-5.
Schematic Diagram – Digital Section (2/3) – .................. 14
3-6.
Schematic Diagram – Digital Section (3/3) – .................. 15
3-7.
Printed Wiring Board – Main Section – ........................... 16
3-8.
Schematic Diagram – Main Section (1/3) – ..................... 17
3-9.
Schematic Diagram – Main Section (2/3) – ..................... 18
3-10. Schematic Diagram – Main Section (3/3) – ..................... 19
3-11. Printed Wiring Board – Display Section – ....................... 20
3-12. Schematic Diagram – Display Section – .......................... 21
3-13. Printed Wiring Board – Video Section – .......................... 22
3-14. Schematic Diagram – Video Section – ............................. 23
3-15. Schematic Diagram – Power Section – ............................ 24
3-16. IC Block Diagrams ........................................................... 25
3-17. IC Pin Function Description ............................................. 27
4. EXPLODED VIEWS
4-1.
Front Panel Section .......................................................... 29
4-2.
Chassis Section ................................................................. 30
5. ELECTRICAL PARTS LIST
······································· 32
5
STR-DE575/K502/K502P
SECTION 1
GENERAL
MULTI CHANNEL DECODING
INPUT MODE
MUTING
VIDEO 1
MD/TAPE
VIDEO 2
CD
DVD/LD
TUNER
TV/SAT
AUX
DISPLAY
DIMMER
PHONES
SPEAKERS
MEMORY
SHIFT
FM MODE
FM
AM
EQ
SURR
LEVEL
SET UP
NAME
A
ENTER
A.F.D.
SOUND FIELD
MULTI CH IN
EQUALIZER
CINEMA STUDIO EX
MODE
2CH
PRESET
TUNING
TUNING
+
+
B
C
MASTER VOLUME
+
8
9
0
qa
qs
1
qd
qf
2 3
4
5
6
7
m
1
?/1
 switch
Press to turn the receiver on and off.
2
DISPLAY button
Press repeatedly to change the information on the
display window as follows:
Index name of the component or the preset station*
m
FUNCTION button indication or frequency**
m
Sound field applied to the program source
* Index name appears only when you have assigned one to the
component or preset station (see page 41). Index name does not
appear when only blank spaces have been entered, or it is the
same as the function button.
** Frequency appears only when the tuner is selected.
3
DIMMER button
Press repeatedly to adjust the brightness of the
display. When you want to turn off the display, set in
the “DIM.RANGE” parameter in the SET UP menu
(page 45).
4
5
The following buttons operate the built-in tuner. For
details, see “Receiving Broadcasts” starting from page 38.
PRESET TUNING +/– buttons
Scan all preset stations.
TUNING +/- buttons
Scan all the available radio stations.
MEMORY button
Press to memorize a preset station.
SHIFT button
Selects a memory page for preset stations.
FM MODE button
If “STEREO” flashes in the display and the FM stereo
reception is poor, press this button. You will not have
the stereo effect but the sound is improved.
FM button
Selects the FM band.
AM button
Selects the AM band.
MULTI CHANNEL DECODING indicator
This indicator lights up when the unit is decoding
signals recorded in a multi channel format.
6
Use the CINEMA STUDIO EX buttons to enjoy the
CINEMA STUDIO EX sound effects.
A/B/C buttons
Press to activate the CINEMA STUDIO EX A, B or C
sound field (page 29).
7
Use the SOUND FIELD buttons to enjoy surround
sound. For details, see “Enjoying Surround Sound”
starting from page 27.
A.F.D. button / indicator
Press to set the receiver to automatically detect the
type of audio signal being input and perform proper
decoding (if necessary).
MODE button / indicator
Press to activate the sound field selection mode (page 28).
2CH button / indicator
Press to output sound from only the front (left and
right) speakers.
8
INPUT MODE button
Press to select the input mode for your digital
components (DVD/LD, TV/SAT).
Each press switches the input mode of the currently
selected component.
Select
To
AUTO
Give priority to digital signals
when there are both digital and
analog connections. If there are no
digital signals, analog is selected
DIGITAL (OPTICAL)
Specify the digital audio signals
input to the DIGITAL OPTICAL
input jacks
DIGITAL (COAXIAL)
Specify the digital audio signals
input to the DIGITAL COAXIAL
input jacks (DVD/LD only)
ANALOG
Specify the analog audio signals
input to the AUDIO IN (L and R)
jacks
Note
If 96 kHz digital signal is input, the tone, sound field and
surround parameters do not function.
9
Function buttons
Press one of the buttons to select the component you
want to use.
To select
Press
VCR
VIDEO
DVD or LD player
DVD/LD
TV or satellite tuner
TV/SAT
MD or Tape deck
MD/TAPE
CD player
CD
Built in tuner
TUNER
An audio component
AUX
After selecting the component, turn on the component
you selected and play the program source.
• After selecting VCR, DVD player, or LD player, turn on the
TV and set the TV’s video input to match the component
you selected.
0
MASTER VOLUME control
After turning on the component you selected, rotate to
adjust the volume.
qa
MUTING button
Press to mute the sound. MUTING appears in the
display when the sound is muted.
qs
 EQUALIZER button 
Press to turn the equalizer on or off. The EQ indicator
in the display lights when the equalizer is turned on.
When you adjust the equalizer using the EQ
parameters (page 36) the settings are stored
automatically and can be reproduced wherever you
turn on the equalizer.
• The equalizer is not compatible with 96 kHz digital audio
signals and during MULTI CH IN input.
z
When you want to listen to an analog source
without any digital processing
Do the following to bypass the sound field and equalizer
circuits.
1 Press 2CH.
2 Press EQ to turn off the EQ indicator.
The result will be a sound that is highly faithful to the
program source.
qd
MULTI CH IN button
Press to enjoy the audio source connected to the
MULTI CH IN jacks with the video from the selected
component. Press again to cancel MULTI CH IN.
• When the MULTI CH IN is selected, the tone, equalizer,
and sound field effects do not function.
qf
SPEAKERS button
Press SPEAKERS button to ON.
PHONES jack
Connects headphones.
• When you connect the headphones, no sound will come
from the speakers.
This section is extracted
from instruction manual.

Download Sony HT-DDW830 / STR-DE575 / STR-K502 / STR-K502P Service Manual (Repair Manual)

Here you can view online or download Sony HT-DDW830 / STR-DE575 / STR-K502 / STR-K502P Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony HT-DDW830 / STR-DE575 / STR-K502 / STR-K502P Audio. Information contained in Sony HT-DDW830 / STR-DE575 / STR-K502 / STR-K502P service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).