Ic Block Diagrams - Sony HCD-EC68 Service Manual

HCD-EC68/EC78

• IC Block Diagrams

– CD Board –
IC201 TK63115SCL-G@GT
VIN 1
THERMAL &
OVER CURRENT
PROTECTION
VOLTAGE
GND 2
REFERENCE
ON/OFF
VCONT 3
CONTROL
– MAIN Board –
IC602 BD3499FV-E2
A1 1
A2 2
B1 3
B2 4 INPUT
INPUT
GAIN
SELECTOR
C1 5
C2 6
D1 7
D2 8
SEL2 9
INVERTER
SEL1 10
VOL1 11
VOLUME
VOL2 12
TC2 13
TC1 14
TREBLE/
BASS
38
–
+
5 VOUT
4 NC
28 FIL
27 GND
PC BUS 26 SDA
LOGIC
25 SCL
24 VCC
23 OUT1
SURROUND
22 SB1
21 SR
20 SB2
19 OUT2
18 BCB1
17 BCA1
16 BCA2
15 BCB2
IC401 BA5826SFP-E2
1
VO1(–)
D.BUFF
2
VO1(+)
LEVEL
D.BUFF
SHIFT
3
IN1
4
RESET
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
REGB 5
6
REGOUT
MUTE 7 MUTE
GND 8
9
IN2'
IN2 10
LEVEL
SHIFT
D.BUFF
VO2(+)
11
D.BUFF
VO2(–)
12
GND 13
OPOUT
14
28 GND
27
VO4(–)
D.BUFF
26 VO4(+)
D.BUFF
LEVEL
SHIFT
25
IN4
24 IN4'
23 BIAS
22 VCC
VCC
VCC 21 VCC
20
IN3'
19 IN3
LEVEL
SHIFT
D.BUFF
VO3(+)
18
D.BUFF
17 VO3(–)
16 RESETt
15 OPIN