Sony XR-C5120 Service Manual page 5

• 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
IC301 CXA2509AQ-T4
30 29 28 27 26 25 24 23 22 21
24dB
120µ/70µ
T2
+ –
– +
NR BIAS MS
PBFB2 31
X1 MODE
PBRIN2 32
TAPE/AUX
33 F2
PBREF2
TAPE EQ
PBFIN2 34
FWD/RVS
VCT 35
VCT
PBGND VCC
36
+ LPF
+
DETECT
–
PBFIN1 37
F3
F1
PBREF1 38
X1
PBRIN1 39
PBFB1 40
T1
120µ/70µ
24dB
1 2 3 4 5 6 7 8 9 10
16 15 14 13
VDD
AMP
20BIT
IF COUNTER
OUTPUT
PORT
10 11 12
20 MSMODE
19 DRSW
18 TAPESW
17
INSW
16 NC
15 NC
MS ON/
OFF
14
MSOUT
13 DGND
12 MSTC
11 G1FB
– 27 –
IC331 TDA7462D
PAUSE
DETECT
INPUT
LOUDNESS VOLUME
GAIN &
CONTROL CONTROL
SE1L 1
AUTO
CIRCUIT CIRCUIT
SE1R 2
ZERO
MD+ 3
MD– 4
CDL+ 5
CDL– 6
COMPANDER
CDR– 7
CDR+ 8
PDR 9
PDGND
10
PDL 11
LOUDNESS
SE2L 12
INPUT
CONTROL
SE2R 13
GAIN
CIRCUIT
BEEP
DIGITAL CONTROL CIRCUIT
CREF 14
IC351 LB1930M-TLM
VCC 1 10 NC
NC 2 BUFFER
OUT1
IN1 3 9
MOTOR
CONTROL
DRIVE 8 NC
CIRCUIT
CIRCUIT
IN2 4 7 OUT2
BUFFER
S-GND 5 6 P-GND
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
4
CLK
5
VREF
DATA 6 9 DATA IN
GND 7 8 DATA OUT
FRONT
TREBLE/
VOICE BANDPASS
FADER
SOFT BASS
MUTE CONTROL
HP LP
CIRCUIT
FRONT
FADER
REAR
FADER
REAR
FADER
SUBWOOFER
FADER
LP
SUBWOOFER
OUT
SDA
IIC
SCL
BUS
POWER
SUPPLY
IC611 BA3918-V2
REGULATOR
OVER VOLTAGE
PROTECT
–
+
2 3 4 5 6 7 8 9 10
1
– 28 –
SE3L
28
27 SE3R
26 MUTE
25 SDA
24 SCL
23 PAUSE
22 OUT FL
21 OUT FR
20 OUT RL
19 OUT RR
18 SUBOUT+
17 SUBOUT–
VDD
16
GND
15
11 12