Sony XR-C6120 Service Manual page 22

Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
– MAIN Board –
IC21 TB2118F-EL-S
24 23 22 21 20 19 18 17
+
AMP
VCC
–
+
4BIT SWALLOW
REGULATOR COUNTER
SEEK/RECP SEEK/RECP
+
PRESCALLER
12BIT
PHASE SIG
PROGRAMMABLE
COMPARATOR
COUNTER
40BIT SHIFT
REFERENCE
REGISTER
OSCILLATOR
DIVIDER
18BIT
22BIT
18BIT
ON/OFF
BUFFER
I/O
SERIAL
PORT
INTERFACE
2 3 4 5 6 7 8 9
1
T E
L 1 3 9 4 2 2 9 6 5 1 3
IC301 CXA2510AQ-T4
30 29 28 27 26 25 24 23 22
120µ/ NR
70µ
T2
+ –
– +
NR BIAS
PBFB1 31
X1
PBRIN1 32
TAPE/AUX
33 F2
PBREF1
TAPE EQ
PBFIN1 34
FWD/RVS
VCT 35
VCT
PBGND VCC
36
+ LPF
+
–
PBFIN2 37
F3
F1
PBREF2 38
X1
PBRIN2 39
PBFB2 40 w w w
OFF/B
T1
120µ/
NR
70µ
1 2 3 4 5 6 7 8 9 10
16 15 14 13
VDD
AMP
20BIT
IF COUNTER
OUTPUT
PORT
10 11 12
21
20 MSMODE
MS
19 DRSW
MODE
18 TAPESW
17
INSW
NR
16 NRSW
MODE
15 NC
MS ON/
OFF
DETECT
14
MSOUT
13 DGND
12 MSTC
11 FF
x a o
. i
– 27 –
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IC331 TDA7462D
PAUSE
DETECT
INPUT
GAIN &
SE1L 1
AUTO
SE1R 2
ZERO
MD+ 3
MD– 4
CDL+ 5
CDL– 6
CDR– 7
CDR+ 8
PDR 9
PDGND 10
PDL 11
SE2L 12
INPUT
SE2R 13
GAIN
BEEP
Q Q
CREF 14 3 7 6
IC351 LB1930M-TLM
VCC 1
NC 2 BUFFER
IN1 3
MOTOR
CONTROL
DRIVE
CIRCUIT
CIRCUIT
IN2 4
BUFFER
S-GND 5
IC581 BA8270F-E2
BUS ON
14 VCC
BUS ON
1
SWITCH
RESET
RST 2 13 RST
SWITCH
12 BUS ON
11 CLK IN
BATTERY
BATT BU IN
3 10
SWITCH
u 1 6 3
y
4
CLK
5
VREF
DATA 6 9 DATA IN
GND 7 8 DATA OUT
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2 4
8 9 9
TREBLE/
LOUDNESS VOLUME VOICE BANDPASS
SOFT BASS
CONTROL CONTROL
MUTE CONTROL
CIRCUIT CIRCUIT
CIRCUIT
COMPANDER
LOUDNESS
CONTROL
CIRCUIT
SUBWOOFER
DIGITAL CONTROL CIRCUIT
3 1 5 1 5 0 8 9
IC611 BA3918-V2
10 NC
OUT1
9
REGULATOR
8 NC
7 OUT2
6 P-GND
OVER VOLTAGE
PROTECT
–
+
2 3 4 5 6 7
1
m
c o
.
– 28 –
2
8 9 9
SE3L
28
27 SE3R
26 MUTE
25 SDA
24 SCL
23 PAUSE
FRONT
22 OUT FL
FADER
HP LP
FRONT
21 OUT FR
FADER
REAR
20 OUT RL
FADER
REAR
19 OUT RR
FADER
FADER
LP
18 SUBOUT+
SUBWOOFER
OUT
17 SUBOUT–
SDA
IIC
SCL
BUS
VDD
16
POWER
2 4 9 8 2 9 9
SUPPLY
GND
15
8 9 10 11 12