Sony WRR-855B, Service Manual, Page: 62 / 84

5-4
WRR-855B
IC
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
+
_
G
G
V
CC
NE575
OP AMP
OP AMP
SUM
AMP
SUM
AMP
V
REF
10k
10k
GAIN CELL
GAIN CELL
10k
10k
RECTIFIER
3.9k
3.9k
RECTIFIER
GND
+ V
IN
1
_ V
IN
1
V
OUT
1
RECT.
IN
1
C
RECT
1
SUM
OUT
1
COMP.
IN
1
V
REF
GAIN CELL
IN
1
+ V
IN
2
_ V
IN
2
V
OUT
2
RECT.
IN
2
C
RECT
2
SUM
OUT
2
COMP.
IN
2
SUM NODE 2
GAIN CELL
IN
2
+
_
+
_
+
_
LOW VOLTAGE COMPANDOR
—TOP VIEW—
SA575DK-T (PHILIPS)
TA31161FN (EL) (TOSHIBA)
1
OSC
IN
2
OSC
OUT
3
BS
4
MIX
OUT
5 6
DEC
8
15 14
AF
OUT
13
QUAD
12
IF
OUT2
11
IF
OUT1
10
RSSI
9
7
IF
IN
MIX
IN
LOCAL
OSC
MIXER
DETECTOR
GND
GND Vcc1
Vcc2
RSSI
IF AMP
IF DETECTOR
—TOP VIEW—
: LOCAL OSC INPUT
; BATTERY SAVE
; MIXER OUTPUT
; BIAS FOR IF INPUT
; IF INPUT
; RSSI OUTPUT
; IF LIMITTER OUTPUT
; PHASE INPUT FOR FM DETECTOR
; DEMODULATION SIGNAL OUTPUT
; MIXER INPUT
OSC IN, OUT ;
BS
MIXER OUT
DEC
IF IN
RSSI
IF OUT1, 2
QUAD
AF OUT
MIX IN
16
TA75S01F (TE85L) (TOSHIBA)
OUT
IN ( + ) IN ( _ )
V
CC
V
EE
+
_
5
4
1 2 3
SINGLE OPERATIONAL AMPLIFIER
—TOP VIEW—
TA75S393F-TE85R (TOSHIBA)
V CC
1 3
OUT
2
5 4
IN ( + ) IN ( _ )
V
EE
_
+
SINGLE COMPARATOR
—TOP VIEW—
TA75S558F (TE85R) (TOSHIBA)
OUT
IN ( + ) IN ( _ )
V
CC
V
EE
+
_
5 4
1 2 3
SINGLE OPERATIONAL AMPLIFIER
—TOP VIEW—
TA8122AF (J.TP1) (TOSHIBA)
1 SIN
2 CK
3 LATCH
4 SOUT
5
EN
6 RST
7
8
9
18
17 OUT1
16 OUT2
15 OUT3
14 OUT4
13 OUT5
12 OUT6
11 OUT7
10 OUT8
GND
GND
GND
V
DD
CMOS SHIFT RESISTOR WITH LATCH
SIN
CK
LATCH
SOUT
EN
RST
OUT1 - OUT8
: SERIAL DATA INPUT
: SHIFT CLOCK INPUT
: LATCH INPUT
: SHIFT RESISTOR (FINAL STAGE)
OUTPUT
: ENABLE INPUT
: RESET INPUT
: SHIFT RESISTOR LATCH OUTPUT1-8
5
EN
3
LATCH
1
SIN
2
CK
6
RST
4
SOUT
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
D Q
C OB
R
OUT1
17
OUT2
16
OUT3
15
OUT4
14
OUT5
13
OUT6
12
OUT7
11
OUT8
10
—TOP VIEW—
TC4SU69F (TE85R) (TOSHIBA)
1
2
GND 3
5 V
DD
4
A A
Y =
2 4
Y
A
0
1
Y
1
0
0 : LOW LEVEL
1 : HIGH LEVEL
Y = A
C-MOS INVERTER
—TOP VIEW—
1
INH
0
0
1
A
0
1
x
ch0
ch1
OPEN
2
3
OPEN
INH V
EE
ch1
ch0
2 3
C
A
6
7 1
5
GND 4
8 V
DD
6
7
5
ON
CHANNEL
CONT. INPUT
C-MOS 2-CHANNEL MULTIPLEXER/DEMULTIPLEXER
—TOP VIEW—
0
1
x
: LOW LEVEL
: HIGH LEVEL
: DON’T CARE
TC4W53FU (TE12R) (TOSHIBA)