SONY STR KM7500 Service Manual
21 21
STR-KM7500
STR-KM7500
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A
B
C
D
E
F
G
H
I
J
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
2SA1163L-TE85L
Q603
2SA1163L-TE85L
Q602
L600
123
MN2488-OPY-MK
IC604
SBR +VE
BCE
123
BCE
2SA1115TP-EF
Q600
CP600
R652
10
1.5k
R648
15k
R649
MP1620-OPY-MK
IC605
SBR -VE
R651
4.7
2.2k
R641
47k
R653
220p
C653
560
R643
68k
R650
6.2k
R647
C654
0.022
4.7k
R646
82k
R642
25V
47
C650
47p
C652
C651
47p
2SA1163L-TE85L
Q606
560
R669
500V
47p
C657
C661
47p
2SA1115TP-EF
POWER AMP
POWER AMP
Q604
123
MN2488-OPY-MK
IC608
C +VE
BCE
6.2k
R673
R679 47k
2.2k
R667
25V
47
C655
2SA1163L-TE85L
Q611
1.5k
R674
2SA1115TP-EF
Q608
82k
R655
L601
1.5k
R661
4.7k
R659
560
R656
0.022
C664
82k
R668
220p
C658
4.7k
R672
R664
4.7
0.022
C659
2SA1163L-TE85L
Q610
68k
R676
123
MP1620-OPY-MK
IC607
SBL -VE
BCE
25V
47
C660
123
MN2488-OPY-MK
IC606
SBL +VE
BCE
10
R678
R665
10
15k
R662
123
MP1620-OPY-MK
IC609
C -VE
BCE
47k
R666
L602
15k
R675
CP602
Q607
2.2k
R654
CP601
6.2k
R660
220p
C663
68k
R663
47p
C662
R677
4.7
1000V
3p
C613
3p
C620
1k
R610
50V
C609
10
68k
R613
100p
C610
100p
C619
100p
C612
50V
C616
10
1k
R616
100p
C617
68k
R619
68k
R617
MA2J1110GLS0
D602
MA2J1110GLS0
D601
MA2J1110GLS0
D600
100p
C606
68k
R605
1k
R604
3p
C607
100p
C604
R607
68k
50V
C603
10
FOR STK
100
R671
100
R670
100
R645
100
R644
100
R658
100
R657
R606
2.2k
2.2k
R618
2.2k
R612
500V
C656
47p
JW600
JW601
JW602
JW603
68k
R611
10V
C614
220
10V
C608
220
FOR STK
10V
C621
220
47k
R732
47k
R733
47k
R735
0.01
C685
0.01
C686
0.01
C688
MA2J1110GLS0
D607
MA2J1110GLS0
D608
MA2J1110GLS0
D610
100k
R739
100k
R740
100k
R742
25V
47
C692
MAZ8056GMLS0
D614
15k
R747
18k
R748
MA2J1110GLS0
D617
0.01
C693
15k
R751
100k
R752
*D571
MAZ8030G0LSO
*R571
6.8k
*R573
22k
*C571
220
*R572
0
100p
C618
1000V
1000V
1000V
50V
100p
C605
1000V
1000V
100p
C611
1987654 3215 14 13 12 11 10 19876543215 14 13 12 11 10
STK350-530T-E
PRE DRIVER
IC600
MUTE
-VOUT1
+VOUT1
COMP1
NF1
IN1
GND
IN2
NF2
COMP2
-VOUT2
+VOUT2
VCC
VCC
VEE
STK350-530T-E
IC601
MUTE
+VOUT1
-VOUT1
COMP1
NF1
IN1
GND
IN2
NF2
COMP2
-VOUT2
+VOUT2
VCC
VCC
VEE
68k
R755
Q601
2SD2144S-TP-V
Q609
Q605
0
*R756
10k
*R746
PROTECTOR
Audio-GND
[SBR]
[SBL]
[C]
VACS
SL_OUT
SBR_OUT
SW/SBSBL_OUT
IC604
IC605
IC608 IC609 IC606 IC607
IC600
IC B/D
PRE DRIVER
IC601
2SD2144S-TP-V
2SD2144S-TP-V
POWER AMP
POWER AMP
POWER AMP
POWER AMP
OVERLOAD DETECT
OVERLOAD DETECT
OVERLOAD DETECT
OVERLOAD DETECT
A1
A2
AA1
AA2
-55.3 55.3 55.3 1.2 -1.1 54.8 -0.3 -0.2
-55.3
55.3
55.3
1.2
-1.1
54.8
-0.3
-0.2 -0.2 -0.3 55 -1.1 1.2 0
1.2 55.5 0
1.2
-1.1
1.2
-1.1
1.2
-1.1
0
00
0
-44.70
0
00
0
-44.70
0
00
0
-44.70
1.2 55.5 0 1.2 55.5 0
-1.1 -55.7 0 -1.1 -55.7 0 -1.1 -55.7 0
IC B/D
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
10V
500V
500V
500V
500V
OVERLOAD DETECT
2SA1163L-TE85L
*1*1*1
*1
ENCAPSULATED COMPONENT
OVERLOAD DETECT
MAIN BOARD (1/4)
MAIN BOARD
(3/4)
(Page 23)
2
MAIN BOARD
(2/4)
(Page 22)
1
5-10. SCHEMATIC DIAGRAM — MAIN BOARD (1/4) — • See page 11 for Block Diagram • Refer to page 49 IC Block Diagrams.
Ver. 1.2
Por ALEXIS FLORES fecha 15:09 , 24/02/2012
19 19
STR-KM7500
STR-KM7500
Ver. 1.1
• Waveforms
– DIGITAL Board – – HDMI RE Board –
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
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
specifi ed.
• f : internal component.
• 2 : nonfl ammable resistor.
• 5 : fl usible resistor.
• C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
• 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.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
L : VIDEO
F : AUDIO
E : TUNER
• Abbreviation
AUS : Australian model
CND : Canadian model
EA : Saudi Arabia model
E51 : Chilean and Peruvian models
SAF : South African model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• f : Internal component.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
CEB
These are omitted.
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component
Side)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Abbreviation
AUS : Australian model
CND : Canadian model
EA : Saudi Arabia model
E51 : Chilean and Peruvian models
SAF : South African model
C
Q
B
E
These are omitted.
IC2015 RI (RMCK)
12.35 MHz
1 V/DIV, 50 nsec/DIV
IC2015 RK (RBCK)
3.086 MHz
1 V/DIV, 20 nsec/DIV
8.A Vp-p
3.4 Vp-p
IC3511 JG (XTALOUT)
28.322 MHz
1 V/DIV, 20 nsec/DIV
IC3519 RB (XOUT)
10 MHz
1 V/DIV, 50 nsec/DIV
IC2015 XL (XOUT)
2.5 Vp-p
3.4 Vp-p
12.288 MHz
1 V/DIV, 50 nsec/DIV
IC2006 [WD (XTAL)
25 MHz
1 V/DIV, 20 nsec/DIV
IC2007 UK (X1)
12.5 MHz
1 V/DIV, 50 nsec/DIV
3 Vp-p
1.2 Vp-p
3.1 Vp-p
SECTION 4
ELECTRICAL CHECK
FM AUTO STOP CHECK
signal
generator
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
Use 75 ohm coaxial cable to connect signal generator and the set.
Note:
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. Confi rm that input frequency of A, B and C are detected and
automatic scanning stops.
set
STR-KM7500
When the station signal is received in good condition, automatic
scanning stops.
9
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