XR-4880 Datasheet, PDF (2/7 Pages) Sony Corporation – AEP Model UK Model

• IC Block Diagrams – MAIN Board –
IC21 TB2118F (EL)
SECTION 6
DIAGRAMS
24 23 22 21 20
19
18
17
16 15 14 13
VCC
REGULATOR
+
–+
AMP
4BIT SWALLOW
COUNTER
VDD
AMP
SEEK/RECP
SEEK/RECP
PRESCALLER
+
PHASE
COMPARATOR
SIG
12BIT
PROGRAMMABLE
COUNTER
OSCILLATOR
REFERENCE
DIVIDER
ON/OFF
40BIT SHIFT
REGISTER
18BIT
18BIT
20BIT
IF COUNTER
22BIT
BUFFER
SERIAL
INTERFACE
I/O
PORT
OUTPUT
PORT
1
2
3456
7 89
10 11 12
IC351 LB1930M-TLM
VCC 1
NC 2
IN1 3
BUFFER
IN2 4
S-GND 5
BUFFER
CONTROL
CIRCUIT
10 NC
MOTOR
DRIVE
CIRCUIT
9 OUT1
8 NC
7 OUT2
6 P-GND
IC301 CXA2509AQ-T4
30
29 28 27 26
25 24 23 22 21
PBFB2 31
PBRIN2 32
PBREF2 33
PBFIN2 34
VCT 35
PBGND 36
PBFIN1 37
PBREF1 38
PBRIN1 39
PBFB1 40
120µ/70µ
–+
X1
F2
VCT
+
F1
X1
24dB
T2
+–
NR BIAS
TAPE/AUX
TAPE EQ
FWD/RVS
MS
MODE
20 MSMODE
19 DRSW
18 TAPESW
17 INSW
16 NC
VCC
LPF
+
–
F3
MS ON/ ^{15 NC}
OFF
DETECT
14 MSOUT
13 DGND
12 MSTC
T1
11 G1FB
120µ/70µ
24dB
1
2 3 45
6 7 8 9 10
IC331 TDA7462D
SE1L 1
SE1R 2
MD+ 3
MD– 4
CDL+ 5
CDL– 6
CDR– 7
CDR+ 8
PDR 9
PDGND 10
PDL 11
SE2L 12
SE2R 13
CREF 14
PAUSE
DETECT
INPUT
GAIN &
AUTO
ZERO
LOUDNESS
CONTROL
CIRCUIT
VOLUME
CONTROL
CIRCUIT
SOFT
MUTE
TREBLE/
BASS
CONTROL
CIRCUIT
COMPANDER
INPUT
GAIN
LOUDNESS
CONTROL
CIRCUIT
BEEP
DIGITAL CONTROL CIRCUIT
IC661 BA3918-V2
VOICE BANDPASS
HP
LP
FRONT
FADER
FRONT
FADER
REAR
FADER
REAR
FADER
SUBWOOFER
LP
FADER
SUBWOOFER
OUT
SDA
IIC
BUS
SCL
POWER
SUPPLY
28 SE3L
27 SE3R
26 MUTE
25 SDA
24 SCL
23 PAUSE
22 OUT FL
21 OUT FR
REGULATOR
OVER VOLTAGE
PROTECT
–
+
20 OUT RL
1 234
5 6 7 89
10
11
12
19 OUT RR
IC751 TDA7385
18 SUBOUT+
17 SUBOUT–
16 VDD
15 GND
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
– 17 –
– 18 –