Read Sony CMT-EH15 / HCD-EH15 Service Manual online
HCD-EH15
21
• IC Block Diagrams
– CD Board –
– CD Board –
IC201 TK63115SCL-G@GT
THERMAL &
OVER CURRENT
PROTECTION
VOLTAGE
REFERENCE
ON/OFF
CONTROL
VIN 1
GND 2
VCONT 3
NC
4
VOUT
5
+
–
1
2
3
4
5
6
7
8
9
10
11
12
13
13
14
28
27
26
24
23
22
21
20
19
18
17
16
15
25
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT-DOWN
REGULATOR
REGULATOR
BIAS TRAP
LEVEL
SHIFT
MUTE
LEVEL
SHIFT
D.BUFF
D.BUFF
D.BUFF
GND
IN4
IN4'
BIAS
VCC
VCC
IN3'
IN3
VO3(+)
VO3(–)
VO4(–)
VO4(+)
RESETt
OPIN
VO1(–)
REGB
VO1(+)
IN1
RESET
REGOUT
MUTE
GND
IN2'
IN2
VO2(+)
VO2(–)
GND
OPOUT
D.BUFF
D.BUFF
D.BUFF
D.BUFF
D.BUFF
REGULA
TOR
VCC
VCC
OVER HEAT &
OVER CURRENT
PROTECTION
BANDGAP
REFERENCE
CONTROL
CIRCUIT
GND
VIN
2
5
VOUT
4
NP
3
VCONT
1
+
–
OUT1
VCC
OUT2
IN2
PRE GND
IN1
P.
P.
ST
ANDBY
2
FIL
TER
1
3
4
5
6
7
8
11
13
POWER GND
10
9
12
PRE
DRIVE AMP
INPUT
AMP
STANDBY
SWITCH
THERMAL
SHUT DOWN
PROTECTOR
POP NOISE
PREVENTION
CIRCUIT
REFERENCE
AMP
RIPPLE
FILTER
OUTPUT
AMP
PRE
DRIVE AMP
INPUT
AMP
OUTPUT
AMP
IC401 BA5826HFP-E2
– MAIN Board –
IC101 TK70540SCL-G
IC301 LA4631-E
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