Ic Block Diagrams - Sony HCD-EH15 Service Manual

• 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 –
IC101 TK70540SCL-G
5
CONTROL
OVER HEAT &
CIRCUIT
OVER CURRENT
PROTECTION
–
+
BANDGAP
REFERENCE
1 2 3
–
+
5 VOUT
4 NC
IC301 LA4631-E
4
IC401 BA5826SFP-E2
1
VO1(–)
D.BUFF
2
VO1(+)
D.BUFF
3
IN1
4
RESET
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
REGB 5
6
REGOUT
MUTE 7 MUTE
GND 8
9
IN2'
IN2 10
D.BUFF
VO2(+)
11
D.BUFF
VO2(–)
12
GND 13
OPOUT
14
REFERENCE
AMP
INPUT
AMP
INPUT
AMP
RIPPLE STANDBY
FILTER SWITCH
1 2 3 4 5
HCD-EH15
D.BUFF
LEVEL
SHIFT
D.BUFF
LEVEL
SHIFT
VCC
VCC
LEVEL
LEVEL
SHIFT
D.BUFF
SHIFT
D.BUFF
THERMAL
POP NOISE
SHUT DOWN
PREVENTION
PROTECTOR
CIRCUIT
OUTPUT
PRE
AMP
DRIVE AMP
PRE OUTPUT
DRIVE AMP AMP
6 7 8
28 GND
27
VO4(–)
26 VO4(+)
25
IN4
24 IN4'
23 BIAS
22 VCC
21 VCC
20
IN3'
19 IN3
VO3(+)
18
17 VO3(–)
16 RESETt
15 OPIN
9 10 11 12 13
21