Sony STR-WX7 Service Manual ▷ View online
25
4-17. SCHEMATIC DIAGRAM TRANS SECTION
14
16
6.3
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
STR-WX7
26
4-18. IC BLOCK DIAGRAMS
• MAIN (2/2) SECTION
IC112 MC14052BCP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
2X0
X2
VDD
X1
XCOM
X0
X3
A
B
VSS
VEE
INH
2X1
2X3
2XCOM
2X2
IC402 MC14053BCP
1
2
3
4
5
6
7
8
B1
B0
C.COM
CO
INH
VEE
VSS
VDD
B.COM
A.COM
A1
A0
A
B
C
C1
9
10
11
12
13
14
15
16
OPEN
OPEN
OPEN
• MAIN (1/2) SECTION
IC401 M65850P
OSCILLATOR
1/2 VCC
AUTO
RESET
LPF1
MAIN
CONTROL
A/D
20KBIT
SRAM
LPF2
D/A
1
2
3
4
5
6
7
8
9
10
14
13
12
11
CLOCK
RESET
MO
MI
D1
DO0
DO1
VCC
CLOCK
REF
OP2IN
OP2OUT
LPF2IN
LPF2OUT
LPF1IN
LPF1OUT
OP1OUT
OP1IN
CC1
CC2
GND
1
2
3
4
5
6
7
8
OVER LOAD DET
F/F
OFFSET DET
LATCH/
AUTORESET
V
CC
ON
MUTE
AC OFF
DET
V
CC
IC851 uPC1237HA
27
• DISPLAY SECTION
IC505 MC14053BCP
2
3
14
1
f04
13 f
12 VCC
11 NC
10 NC
15 f03
5
GND
6
BIAS
C
7
NC
8
NC
9
NC
4
16 f02
17 f01
18 RESET
RESET
C
PREF
LINE
NF
LINE
IN
REFFERENCE
CURRENT
BPF
DET
BPF
DET
BPF
DET
BPF
DET
DET
RESET
Bias
1
2
3
4
5
6
7
8
B1
B0
C.COM
CO
INH
VEE
VSS
VDD
B.COM
A.COM
A1
A0
A
B
C
C1
9
10
11
12
13
14
15
16
OPEN
OPEN
OPEN
• SLIDING PANEL SECTION
IC891 LB1641
IC506 BA3833F
1
2
3
4
5
6
7
8
9
10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1
VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D
O.C.P
FWD/REV/STOP
CONTROL LOGIC
28
• Abbreviation
FL : Fluorescent indicator tube
4-19. IC PIN FUNCTION
• IC501 SYSTEM CONTROL (uPD780016AYGF-012-3BA) PANEL BOARD
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
I/O
O
O
O
O
O
O
O
—
—
O
I
—
O
I
I
I
I
I
I
I
I
O
—
—
I
I
I
I
I
I
I
I
—
—
O
O
O
O
—
—
Description
Not used
Surround level A signal output
Surround level B signal output
Not used
DBFB level 2 signal output
DBFB level 1 signal output
Mute signal output
Ground
Test terminal (Connected to ground)
X’ tal (5MHz)
Power supply (+5V)
X’ tal (32kHz)
Reset signal input
RDS clock input
RDS data input
Rotary encoder (VOLUME) pulse input
Rotary encoder (MULTI JOG STATION) pulse input
Spectrum analyzer control output
Power supply (+5V)
Analog power supply (+5V)
Audio input for VACS control
Spectrum analyzer data input
Key data input
Back up signal input
Analog ground
Ground
FL data output
FL clock output
FL latch output
FL reset output
Ground
Ground
Pin Name
CLK
LEVEL A
LEVEL B
PROLOGIC RLY
DBFB B2
DBFB B1
TA MUTE
GND
TEST
X2
X1
VDD
XT2
XT1
RESET
RDS CLK
RDS DATA
VOL A
VOL B
JOG A
JOG B
SPEANA CONT
VDD
A VDD
VACS
SPEANA0
SPEANA1
KEY0
KEY1
KEY2
KEY3
ACCUT
A VSS
GND
FL DATA
FL CLK
FL LAT
FL RESET
GND
VSS
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