Power Board - Sony CFD-E55 Service Manual

IC301 TA2068N
1
ALC
NAB
2
OUT1
NAB
AMP1
BUF AMP
NAB
3
A1
NF1
REC
AMP1
REC
4
OUT1
26dB
NAB
5
IN1
VREF 6
REF
AMP
7
GND
2.1
NAB
REC
8
IN2
AMP2
REC
9
OUT2
26dB
NAB
10
NF2
NAB
AMP2
NAB
11
OUT2
BUF AMP
MIC
A2
AMP1
MIC
12
NF
– POWER Board –
IC303 LA4601N
TSD
PREVENTION
PROTECTOR
OUTPUT
PRE
AMP DRIVE AMP
PRE
OUTPUT
AMP DRIVE AMP
RIPPLE
FILTER
1 2 3 4 5
LINE
TAPE
RADIO
MONITOR
BUF AMP
MUTE
AMP
B1
ON 7dB
LOGIC
ON
7dB
BUF AMP
B2
MONITOR
MUTE
AMP
RADIO
TAPE
LINE
POP NOISE
REFERENCE
AMP
CIRCUIT
INPUT
AMP
INPUT
AMP
STANDBY
SWITCH
6 7 8 9 10
IC302 BH3854AS
LINE
AGND 1
24
IN1
2
IN1
INT
23
NF1 3
EXT
RADIO
BVN1 4
22
IN1
BIN1 5
REC
21
BVO1 6
PLAY
TIN1 7
TVO1 8
PRE
20
OUT1 OUT1 9
VCC 10
19 VCC
SC 11
PRE
PORT1 12
18
OUT2
13
PORT2
RADIO
PORT3 14
17
LINE
PORT4 15
RADIO DGND 16
16
IN2
TAPE
15
TAPE
LINE
14
IN2
MIC
13
IN
– 53 –
32 FILTER
31 IN2
30 NF2
29 BVN2
28 BIN2
MATRIX
27 BVO2
SURROUND
26 TIN2
25 TVO2
VR VR
OUT2
24
23 VC
22 TC
21 BC
20 CK
19 DATA
18 LATCH
17 VREF