Sony STR-KM7600 Service Manual ▷ View online
STR-KM7600
9
SECTION 4
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 an-
1. Turn on the set.
2. Input the following signal from signal generator to FM an-
tenna input directly.
Carrier frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 1 kHz
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. Confi rm 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.
scanning stops.
STR-KM7600
10
SECTION 5
DIAGRAMS
• Circuit Boards Location
VIDEO 2 board
INSULATOR board
CONNECTION board
MAIN board
VIDEO board
DIGITAL board
TUNER (FM/AM)
HDMI PC board
STANDBY DCDC board
AC SELECT board
(for Saudi Arabia model only)
(for Saudi Arabia model only)
THERMAL SENSOR board
POWER KEY board
HP SUPPORT board
DISPLAY board
HEADPHONE board
11
11
STR-KM7600
STR-KM7600
5-1. BLOCK DIAGRAM — DISPLAY SECTION —
IC102
52
30
RSTB
53 CSB
54 CLKB
55 DIN
56 VDD
57 P1
GR1 - GR11
AD1,AD2,
SG1~SG35
VEE
10
AD_1
AD_2
11
PW_SW
13
DCAC_IN
21
DCAC
1
14
VOG_JOG_B
15
VOG_JOG_A
5
4
FL_RESET(NC)
6
FL_CLK
7
FL_DIN
FL_CS
2
NIGHT MODE (LED)
1
MULTI_ST (LED)
12
SIRCS
+3.3V (STANDBY)
+3.3V
+5V
CNS104
CNP102
FL101
VACUUM FLUORESCENT
DISPLAY
T001
8
INPUT_JOG_B
9
INPUT_JOG_A
58 P2
S107
MUSIC
S108
GAME
S109
MULTI STEREO
S101
NIGHT MODE
S102
AFD
S103
MOVIE
S110
RV102
MASTER VOLUME
RV101
INPUT SELECTOR
32,33,34,35,36,37,38,39
,40,41,42
1~31,59~64
4~27,39~51
28,29,30,31,32,33,34,35,36,
37,38
2
53
1
2
3
4
9
7
8
Q001
Q111
D106
FL DISPLAY DRIVER
Q110
D105
SIRCS
IC101
16
+5V
+3.3V
+5V REG
IC103
IC181
VIDEO BUFFER
7
IC180
MIC AMP
1
5
5
1
3
CN173
L-CH(V2)
R-CH(V2)
5
7
VIDEO
9
MIC MONO
10
RCH
RCH
D180
D181
J181
VIDEO 2 IN
AUDIO
VIDEO
R
L
V
AUTO CAL MIC
J180
: VIDEO
: AUDIO
SIGNAL PATH
R-ch is omitted due to same as L-ch.
?/1
DIGITAL SECTION
(1/2)
(Page 15)
A
MAIN SECTION
(Page 18)
C
VIDEO SECTION
(Page 12)
F
RCH
RCH
12
12
STR-KM7600
STR-KM7600
5-2. BLOCK DIAGRAM — VIDEO SECTION —
PS(V-MUTE)
COMP_S2
COMP_S1
V_SW1
1
3
4
2
V_SW2
V_SW3
V_SW4
DMPORT V
5
7
9
6
CN202
+R3(15V)
-R3(-15V)
1
5
CN200
VIDEO
2
CNP201
IC220
COMPONENT VIDEO SELECT
23
4
2
20
22
PS
CH3 OUT
CH2 OUT
24
CH1 OUT
17
CH3 IN1
8
CH2 IN1
1
CH1 IN1
15
CH3 IN2
10
CH2 IN2
3
CH1 IN2
13
CH3 IN3
12
CH2 IN3
5
CH1 IN3
SW2
SW1
18 V-2
7 V+1
IC210
INPUT SELECT
D210
D211
14
2
10
SW1
SW5
SW2
4 SW3
6 SW4
7 VIN3
9 VIN2
8 V-
16 V+
J200
MONITOR
VIDEO OUT
VIDEO IN
J201
VIDEO1
SAT
BD
VIDEO OUT
VIDEO IN
VIDEO IN
J202
J203
MONITOR OUT
P
Y
B
/C
B
P
R
/C
R
VIDEO 1 IN
P
Y
B
/C
B
P
R
/C
R
DVD IN
P
Y
B
/C
B
P
R
/C
R
SAT IN
P
Y
B
/C
B
P
R
/C
R
1
VOUT1
13
VIN1
15
VOUT2
3
VIN5
5
VIN4
IC201
-5V REG
IC202
+5V REG
CONNECTION
SECTION
(Page 17)
I
STANDBY
SECTION
(Page 14)
O
DISPLAY
SECTION
(Page 11)
F
COMPONENT VIDEO
SLJQDO SDWK
: VIDEO
R-FK LV RPLWWHG GXH WR VDPH DV L-FK
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