Sony STR-K665P - Receiver For Home Theater, str-k665p System Service Manual
SERVICE MANUAL
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
STR-K665P
US Model
FM STEREO FM-AM RECEIVER
— Continued on next page —
SPECIFICATIONS
Ver 1.0 2004.03
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks of
Dolby Laboratories.
“DTS” and “DTS Digital Surround” are registered trademarks of
Digital Theater Systems, Inc.
9-877-665-01
2004C1678-1
© 2004.03
• STR-K665P is the tuner and the amplifier
section in HT-DDW665.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 6 ohm loads, both channels driven, from
120 − 20,000 Hz; rated 55 watts per channel
minimum RMS power, with no more than 0.7%
total harmonic distortion from 250 milliwatts to
rated output.
Amplifier section
Power Output
1)
(6 ohms 1 kHz, THD 10%)
FRONT
2)
: 85 W/ch
CENTER
2)
: 85 W
SURR
2)
: 85 W/ch
(6 ohms 100 Hz, THD 10%)
SUB WOOFER
2)
: 85 W
1) Measured under the following conditions:
2) Depending on the sound field settings and the
source, there may be no sound output.
120 V AC, 60 Hz
Inputs (Analog)
DVD, VIDEO Sensitivity: 800 mV
Impedance: 50 kiloohms
Reproduction frequency range:
28 − 20,000 Hz
Tone
Gain levels ±6 dB, 1 dB step
Inputs (Digital)
DVD (Coaxial) Sensitivity: −
Impedance: 75 ohms
VIDEO (Optical) Sensitivity: −
Impedance: −
FM tuner section
Tuning range 87.5 - 108.0 MHz
Antenna FM wire antenna
Antenna terminals 75 ohms, unbalanced
Intermediate Frequency 10.7 MHz
2
STR-K665P
Design and specifications are subject to change without notice.
AM tuner section
Tuning range
With 10-kHz tuning scale: 530 - 1,710 kHz
3)
With 9-kHz tuning scale: 531 - 1,710 kHz
3)
Antenna Loop antenna
Intermediate Frequency 450 kHz
3) You can change the AM tuning scale to 9 kHz or
10 kHz. After tuning in any AM station, turn off the
receiver. While holding down PRESET TUNING +
or TUNING +, press ?/1. All preset stations will be
erased when you change the tuning scale. To reset
the scale to 10 kHz (or 9 kHz), repeat the procedure.
120 V AC, 60 Hz
General
Power requirements
160 W
Power consumption (during standby mode)
0.3 W
Dimensions (w/h/d) (Approx.)
430 × 145 × 301.5 mm
(17 × 5 6/8 × 11 7/8 inches)
including projecting parts
and controls
Mass (Approx.) 6.5 kg (14 lb 6 oz)
Power consumption
TABLE OF CONTENTS
1. GENERAL···································································4
2. TEST MODE······································································ 8
3. DIAGRAMS
3-1. Circuit Board Location················································· 9
3-2. Block Diagrams – MAIN Section – ··························· 10
– DISPLAY/POWER Section – ································· 11
3-3. Printed Wiring Board
– DIGITAL Board (Side A) –····································· 12
3-4. Printed Wiring Board
– DIGITAL Board (Side B) –····································· 13
3-5. Schematic Diagram – DIGITAL Section (1/2) – ······· 14
3-6. Schematic Diagram – DIGITAL Section (2/2) – ······· 15
3-7. Printed Wiring Board – MAIN Section –··················· 16
3-8. Schematic Diagram – MAIN Section (1/2) –············· 17
3-9. Schematic Diagram – MAIN Section (2/2) –············· 18
3-10. Printed Wiring Board – SUB WOOFER Board – ······ 19
3-11. Schematic Diagram – SUB WOOFER Board –········· 19
3-12. Printed Wiring Board – POWER Section – ··············· 20
3-13. Schematic Diagram – POWER Section – ·················· 21
3-14. Printed Wiring Board – FRONT PANEL Section – ··· 22
3-15. Schematic Diagram – FRONT PANEL Section –······ 23
3-16. IC Pin Function Descriptions ····································· 27
4. EXPLODED VIEWS
4-1. Front Panel Section ···················································· 29
4-2. Chassis Section ·························································· 30
5. ELECTRICAL PARTS LIST ····································· 31
3
STR-K665P
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 A C 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. Follo w 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 v oltmeter. The “limit” indication
is 0.75 V, so analog meters must ha v e an accurate lo w-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
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.
Unleaded solder
Boards requiring use of unleaded solder are printed with the leadfree 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 flo w) 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.
To Exposed Metal
Parts on Set
0.15 µF
1.5 kΩ
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
4
STR-K665P
SECTION 1
GENERAL
This section is extracted
from instruction manual.
A.F.D. (button/indicator) 7 (17,
18, 19, 30)
AM ws (13, 14)
DIMMER 3 (15)
DISPLAY 2 (15, 31)
Display 5 (15)
DVD wf (13)
ENTER qa (10, 24)
FM wd (13, 14)
FM MODE w; (13)
Input buttons qh (13, 20, 23, 24)
INPUT MODE qs (20)
(receptor) 4 (25, 31)
MAIN MENU qg (11, 20, 22, 24)
MASTER VOLUME −/+ q; (12,
13, 30)
MEMORY ql (14)
MOVIE (button/indicato r) 8
(18, 30)
MUSIC (button/indicator ) 9 (19,
30)
PHONES (jack) wa (13, 16, 30)
PRESET TUNING −/+ qj (14,
33)
TUNING −/+ qk (13, 33)
VIDEO wg (13)
2CH (button/indicator) 6 (17,
19, 21)
+/− qd (11, 20, 22, 24)
</> qf (11, 20, 22, 24)
?/1 (power) 1 (10, 12, 33)
ALPHABETICAL ORDER
A - L
M - Z
NUMBERS AND SYMBOLS
423
5
1
qhw; qk qjql qsqaqd q;
6789
wa qfqg
wg wf wd ws
5
STR-K665P
Remote
Button
Operations Function
AM wj Receiver To select the AM band.
ANT 4
DVD PLAYE R/
VIDEO
CASSETTE
RECORDER
(VIDEO mode)
Selects output signal
from the antenna
terminal: TV signal or
VCR program.
AUDIO wd
DVD PLAYE R/
VIDEO
CASSETTE
RECORDER
Changes the sound to
Multiplex or Bilingual.
AV ?/1
e;
DVD PLAYE R/
VIDEO
CASSETTE
RECORDER
Turns the audio and
video components on or
off.
CH/ Receiver Selects preset stations.
PRESET/
TRACKING
+/– ws
DVD PLAYE R/
VIDEO
CASSETTE
RECORDER
(VIDEO mode)
Selects preset channel.
DVD PLAYE R/
VIDEO
CASSETTE
RECORDER
(VIDEO mode)
Adjusts the tracking
when distortion occur s.
CLEAR wa
DVD PLAYE R/
VIDEO
CASSETTE
RECORDER
(DVD mode)
Press if you make a
mistake when you press
the numeric button or
press to return to
continuous play etc.
DISPLAY
9
DVD PLAYE R/
VIDEO
CASSETTE
RECORDER
Selects information
displayed on the TV
screen.
D.TUNING qlReceiver Enters direct tuning
mode.
DVD 2 Receiver To watch DVD
PLAYER/VIDEO
CASSETTE
RECORDER (DVD
mode).
ENTER 9 Receiver/
DVD PLAYE R/
VIDEO
CASSETTE
RECORDER
Enters the selection.
The tables below show the settings of each
button.
Remote button
description
Remote
Button
Operations Function
A.F.D. wh Receiver Selects the decoding
mode for audio sound.
H
X
.
>
0/10
>10/11 12
Mm
DVD VIDEO
SYSTEM STANDBYSELECT
TV ?/1 AV ?/1
FM AM
2CH
A.F.D.
ANT
MOVIE/MUSIC T.TONE
TOP MENU
MUTING
MASTER
VOL
DISPLAY
TV VOL TV CH
WIDE SET UP
TV/
VIDEO
MAIN
MENU
RETURN
SCAN/SLOW
y
SHIFT
D.TUNING
1
23
45
6
7
8
9
ENTER CLEAR
AUDIO
CH/PRESET/
TRACKING
x
?/1
O
f
F
G
g
MENU
1
wl
wk
wj
e;
2
wg
wh
ws
wd
wf
wa
w;
7
qk
ql
qj
qh
9
8
3
4
5
q;
qa
6
qg
qf
qd
qs
ENTER
6
STR-K665P
Remote
Button
Operations Function
ENTER/12 w;DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Enters the selection.
FM wk Receiver To select the FM band.
MAIN
MENU qf
Receiver Selects the menu of the
receiver.
MASTER
VOL +/– qh
Receiver Adjusts the master
volume of the receiver.
MENU 9
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Displays menu.
MOVIE/
MUSIC wg
Receiver Selects the pre-
programmed sound
fields for movie and
music.
MUTING qjReceiver Mutes the sound from
the receiver.
RETURN/
O 9
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
(DVD mode)
Returns to the pr evious
menu or exits the menu.
SCAN/
SLOW y
ql
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Playback in slow
motion.
SET UP qd
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Selects the SET UP
MENU.
SHIFT 6 Receiver Selects a memory page
for presetting radio
stations or tuning to
preset stati o ns.
SHUTTLE
6
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Changes the playback
speed.
SYSTEM
STANDBY
(Press AV
?/1 e; and
?/1 wl at
the same
time)
Receiver/TV/
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Turns off the receiver
and other Sony audio/
video components.
T.TONE wf Receiver Outputs test tone .
Remote
Button
Operations Function
TOP MENU 9VIDEO
CASSETTE
RECORDER
(DVD mode)
Displays DVD title.
TV CH +/– qaTV Selects preset TV
channels.
TV/VIDEO qgTV Selects input signal:
TV input or video
input.
TV VOL
+/– q;
TV Adjusts the volume of
the TV.
TV ?/1 1 TV Turns the TV on or off.
VIDEO 2 Receiver To watch DVD
PLAYER/VIDEO
CASSETTE
RECORDER (VIDEO
mode).
WIDE qs TV Selects the wide picture
mode.
?/1 wl Receiver Turns the receiver on or
off.
2CH 3 Receiver Selects 2CH STEREO
mode.
V/v 9 Receiver Selects a menu item.
B/b 9 Receiver Makes adjustm en t or
change the setti ng.
V/v/B/b 9
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Selects a menu item.
1-9 and 0/10 5Receiver Use with SHIFT to
preset radio station or
tuning to preset stations
and with D.TUNING
for direct tuning.
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
(VIDEO mode)
Selects channel
numbers.
7
STR-K665P
Notes
•The above explanation is intende d to se r ve as an
example only. Therefore, depe nd ing on the
component the above operation may not be possible
or may operate differently than desc r ibe d.
•When you press input buttons (VIDEO or DVD), the
input mode of the TV might not sw itch to the
corresponding input mode that you want. In this case,
press the TV/VIDEO button to switch the input mode
of the TV.
•The >10/11 is not available.
Remote
Button
Operations Function
./> 6DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Skips tracks.
m/M
ql
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
(DVD mode)
Searches tracks in the
forward or backward
direction.
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
(VIDEO mode)
Fastforwards or rewinds .
H 7
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Starts playblack.
X 8
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Pauses playblack or
record. (Also starts
recording with
components in recording
standby.)
x qk
DVD PLAYER/
VIDEO
CASSETTE
RECORDER
Stops playback.
8
STR-K665P
SECTION 2
TEST MODE
FACTORY PRESET MODE
• All preset contents are reset to the default setting.
• Procedure:
While depressing the MAIN MENU and the PRESET TUNING−
buttons simultaneously , press the
?/1
button again. The message
“FACTORY” appears and the present contents are reset to the
default values.
AM CHANNEL STEP 9 KHz/10 KHz
SELECTION MODE
• Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
• Procedure:
Set the FUNCTION to AM. Turn off the main power.
While depressing the TUNING+ button or the
PRESET TUNING + button, press the
?/1
button to turn on
the main power . Either the message “9 k STEP” or “10 k STEP”
appears. Select the desired step.
FLUORESCENT INDICATOR TUBE TEST 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:
While depressing the MOVIE and the > buttons simultaneously ,
press the
?/1
button to turn on the main power.
1. All segments turn on.
2CH , A. F. D. , MOVIE and MUSIC LED turn on.
2. Press the VIDEO button, confirm display.
A.F.D. and MUSIC LED turn on.
3. Press the VIDEO button, confirm display
2CH and MOVIE LED turn on.
4. Press the VIDEO button, All se gments and all LEDS turn off.
5. Every pressing of the VIDEO button turns on each segment
and LED one after another in the same order.
SOUND FIELD CLEAR MODE
• The preset sound field is cleared when this mode is activated.
Use this mode before returning the product to clients upon
completion of repair.
C
SL SR
SBL SBR
SP A
SP B SLEEP OPT COAX MULTI CH IN 96/24
DIGITALEX PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS
D.RANGE EQ STEREO MONO
D
D
D
D
kHz
mft.
MHz
MEMORY
DIRECT
L
SW
CR
SL S SR
SBL SB SBR
LFE
SP A
SP B SLEEP OPT COAX MULTI CH IN 96/24
DIGITALEX PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS
D.RANGE EQ STEREO MONO
D
D
D
D
dB
kHz
mft.
MHz
MEMORY
DIRECT
LSWR
S
SB
LFE
SP A
SP B SLEEP OPT COAX MULTI CH IN 96/24
DIGITALEX PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS
D.RANGE EQ STEREO MONO
D
D
D
D
dB
kHz
mft.
MHz
MEMORY
DIRECT
• Procedure:
While depressing the 2CH button, press the
?/1
button to turn
on the main power.
The message “SF . CLR.” appears and initialization is performed.
SOFTWARE VERSION DISPLAY MODE
• The software version is displayed.
• Procedure:
While depressing the FM MODE and the DISPLAY buttons
simultaneously, press the
?/1
button to turn on the main power .
The model name, destination and the software version are
displayed.
KEY CHECK MODE
• Button check
• Procedure:
While depressing the A.F .D. and the AM buttons simultaneously ,
press the power
?/1
button to turn on the main power.
“REST 23” appears.
Every pressing of any button other than ?/1 counts down the
buttons. The buttons which are already counted once are not
counted again. When all buttons are pressed “REST 00” appears.
COMMAND MODE SELECTION MODE
• The command mode (AV1 or AV2) of the remote commander can
be selected.
• Procedure:
1. While depressing the ENTER button, press the ?/1 button
to turn on the main power.
2. The message “C.MODE.AV 1” or “C.MODE.AV 2” appears
for a moment. Select the desired mode.
99
STR-K665P
• Waveforms
DIGITAL Board
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
4
W or less unless otherwise
specified.
•%: indicates tolerance.
•f: internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
•Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
* : Imposible to measure
•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
•Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
J : ANALOG INPUT
c : DIGITAL INPUT
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side B) the parts face are indicated.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
•
a
: Through hole.
•
f
: internal component.
• : Pattern from the side which enables seeing.
C
B
These are omitted.
E
Q
B
These are omitted.
CE
1 IC1101 wa (XOUT)
4.7 Vp-p
1V/div, 40ns/DIV
81.4ns
(12.288MHz)
2
IC1201 9 (MCLK1)
2.8 Vp-p
73.6ns (13.59MHz)
1V/div, 40ns/DIV
3 IC1601 id (XI)
3.5Vp-p
62.5ns (16MHz)
1V/div, 40ns/DIV
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
3-1. CIRCUIT BOARD LOCATION
DIGITAL board
MAIN board
DISPLAY board
HEADPHONE board
POWER board
TUNING board
STANDBY board
SUB WOOFER board
SECTION 3
DIAGRAMS
1010
STR-K665P
3-2. BLOCK DIAGRAMS – MAIN SECTION –
• Signal Path
: FM
: ANALOG INPUT
: DIGITAL INPUT
• R-CH is omitted due to same as L-CH.
AUDIO IN
AUDIO IN
PROCESSOR
INL6
74
54
L OUT
INL5
76
41
SL OUT
36
C OUT
35
SW OUT
MUTING
Q361
DATA
28
CLK
27
LATCH
29
MUTING
Q365
MUTING
Q363
MUTING
Q364
15
CLK
SDA
SCL
16
LATCH
14
DATA
SYSTEM CONTROL
IC1601(2/3)
DVD
IN
VIDEO
IN
J1101
35
62
IC1102
DIGITAL AUDIO
I/F RECEIVER
IC1101
L
DIN2
5
DO
35
DI
36
CLK
38
CE
37
ERROR
34
XSTATE
17
XMODE
48
13
CK OUT
14
BCK
15
LRCK
16
DATAO
IC1102
X1101
12.288MHz
AUDIO DSP
IC1201
KFSI0
22
SDI2
30
HCLK
34
HCS
36
HACN
32
PM
113
BST
56
XRST
2
23
SDO1
24
SDO2
25
SDO3
BCKI2
29
LRCKI2
28
IC1202
SRAM
AUDIO CODEC
IC1501
MCLKI
39
CDT1
43
CCLK
42
CS
41
PD
17
S.MUTE
3
27
L OUT1
BCLK
4
LRCK
5
SDTO
9
SDTI1
6
SDTI2
7
SDTI3
8
25
L OUT2
23
L OUT3
24
R OUT3
LIN
31
ANALOG SOUND
SL
BAL L+
14
SWSELOUT
33
SWVIN
34
LIN2
20
23
24
25
SL
DISPLAY
/ POWER
SECTION
C
SW
SLIN2
CIN2
SWIN2
A
98 97 95 96 99 100 94 1
DO
DI
CLK
CE
ERROR
XSTATE
CKSEL1
DATA0
20
HCLK
4
HCS
5
HACN
7PM3
BST
6
XRST
10
CDT1
12
SCL
13CS8PD9
SMUTE
24
ANA/DIG
MUTING
CONT
Q1601,1602
21
5 6
34 33
F.MUTING
MUTING
SWITCH
Q379
J403
DVD
VIDEO
OPTICAL
IN
IC1104
DIN0
3
22 21
XIN XOUT
93
XMODE
CKSEL1
47
GP9
68
HD OUT
35
HD IN
33
2
GP9
18
HD OUT
19
HD IN
9
MCLK1
12
MCLK2
X1201
13.5MHz
14
SCK OUT
20
BCKO
19LRCKO
18SDI1
24AUDIO
GP8
69
EXLOCK
59
INL1
4
TUNER PACK
FM
75 Ω
COAXIAL
AM
R-CH
ST-DI
ST-DO
CLK
CE
STEREO
TUNED
MUTING
FM
AM
R CH
L CH
SYSTEM CONTROL.
IC1601(1/3)
DO
76
SLATCH
78
STEREO
74
TUNED
73
MUTING
75
COAXIAL
OPTICAL
DIGITAL
D1101
IC201
D1601
SDA SCL
EEPROM
IC1604
(ANALOG SIGNAL)
76
13
IC502
IC502
1111
STR-K665P
– DISPLAY/POWER SECTION –
• R-CH is omitted due to same as L-CH
IN2
8
12
+V OUT2
POWER AMP
IC701
POWER AMP
IC702
9
NF2
LIMITER
Q701,702
11
-V OUT2
IN2
12
+V OUT2
9
NF2
11
-V OUT2
BOOSTER
Q703
BOOSTER
Q704
CURRENT
DETECT
Q705,706
AF POWER
PROTECT
Q740
LIMITER
Q651,652
BOOSTER
Q653
BOOSTER
Q654
CURRENT
DETECT
Q655,656
IN+
1
6
+V OUT
POWER AMP
IC501
2
IN-
LIMITER
Q501,502
5-V OUT
BOOSTER
Q503
BOOSTER
Q504
CURRENT
DETECT
Q505,506
IN+
1
6
+V OUT
WOOFER AMP
IC503
2
IN-
LIMITER
Q572
5-V OUT
BOOSTER
Q573
BOOSTER
Q574
CURRENT
DETECT
Q575,576
D721
PROTECT
SWITCH
Q722,723,725
RELAY
DRIVE
Q790
RY791
RELAY
DRIVE
Q710
RY701
D731
RELAY
DRIVE
Q610
RY601
D733
RELAY
DRIVE
Q550
RY501
D734
L
R
SR
SL
SW
C
R-CH
R-CH
R-CH
PHONES
TM601
TM602
66
PROTECTOR
67
HEADPHONE RELAY
71
PREOUT/FRONT RELAY
69
REAR RELAY
70
CENTER RELAY
RV102
ENCODER
3 1
VOL(B)59VOL(A)
60
POWER KEY
56
?/1
S152
77
RSTX
48
STOP
54
SIRCS
55
FUSE DETECT
REMOTE
CONTROL
RECEIVER
1
IC102
D910-913
AC
IN
T902
RY901
D915
F901
D914
RELAY
DRIVE
Q901
D820-823
23
VCC5
84
VCC3
-7V
REG
3 2
+7V
REG
1 3
AUDIO
+7V
IC801
IC802
POWER RELAY
65
RELAY
+B
D812-815
82 83
X0
X1
X1601
16MHz
F1
F2
L
SLSL
C
SW
A
J791
FLUORESCENT
INDICATOR TUBE
FL101
61
DIN
62
CLK
63
FL_STB
7
DIN8CLK9STB
14 29
SEG1-16
42 31
GRID1-12
F1 F2
1
SW1
2
SW2
3
SW3
4
SW4
FL DRIVE
IC100
D102-105
FUNCTION
KEY
A/D0
38
S100-104,
S108
S131-135,
S151
FUNCTION
KEY
A/D1
39
FUNCTION
KEY
A/D2
40
S122-123,
S126-128
FUNCTION
KEY
A/D3
41
S110-115
SYSTEM CONTROL
IC1601(3/3)
• Signal Path
: FM
AF POWER
PROTECT
Q640
AF POWER
PROTECT
Q540
IC601
21
FRONT
SURROUND
SUB
WOOFER
CENTER
IC601
57
25
HP DETECT
BUFFER
IC101
35
AVCC
+3.3V
REG
3 1
IC1904
AUDIO
-7V
+10V
REG
3 1
TUNER
+10V
IC1902
T901
+3.3V REG
Q471
Q921
AC DET
1 2
IC1602
+3.3V
D802
+B
-B
-B
SWITCH
Q691,692
-30V REG
Q801
FL101
-30V
POWER AMP
-B
+5V
REG
3 1
IC1903
+5V
+2.5V
REG
5
+2.5V
+3.3V
REG
2
4
IC1901
+3.3V
+5V
REG
3 1
IC1503
AUDIO
+5V
SPEAKERS
MASTER
VOLUME
8
RESET
+3.3V(STBY)
MAIN
SECTION
1212
STR-K665P
• See page 9 for Circuit Boards Location.
3-3. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE A) –
• : Uses unleaded solder.
Ref. No. Location
D1101 E-4
D1601 G-7
IC1101 C-3
IC1102 D-2
IC1201 E-5
IC1202 C-5
IC1501 F-3
IC1601 F-7
IC1602 G-8
IC1604 F-8
Q1601 G-7
Q1602 G-7
• Semiconductor
Location
IC1501
IC1102
IC1101
IC1202
IC1201
IC1601
IC1602
IC1604
11 1
23
22
12
34
44
33
E
E
135
4
G1101
1313
STR-K665P
IC1902
IC1901
IC1903
IC1904
IC1503
IC1104
3
1
1
13
1
1
3
3
3
45
18
1
1
3
13
15 14
111
210
1
3
A
STANDBY BOARD
CNP912
(Page 20)
K
DISPLAY BOARD
CNS100
(Page 22)
I
MAIN BOARD
CNP502
(Page 16)
H
MAIN BOARD
CNP501
(Page 16)
B
STANDBY BOARD
CNP802
(Page 20)
J
MAIN BOARD
CNP911
(Page 16)
TUNER UNIT
AM
FM 75
COAXIAL
OPTICAL
VIDEO IN
DVD IN
COAXIAL
DIGITAL
• See page 9 for Circuit Boards Location.
3-4. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE B) –
• : Uses unleaded solder.
Ref. No. Location
D1001 E-8
D1501 E-8
D1502 E-9
IC1104 C-10
IC1503 G-6
IC1901 C-3
IC1902 B-3
IC1903 D-3
IC1904 D-3
• Semiconductor
Location
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