Sony CMT-EP414 / HCD-EP414 Service Manual ▷ View online
25
25
HCD-EP414
6-9. Printed Wiring Boards – Power Section –
6-10. Schematic Diagrams – Power Section –
• See page 15 for Circuit Boards Location.
MX
AC
IN
IN
T901
POWER
TRANSFORMER
(SUB)
T902
POWER
TRANSFORMER
(MAIN)
6
TO
MAIN
BOARD
CNP305
(Page 21)
1
2
A
B
C
D
E
F
3
4
5
6
CN902
Ref. No.
Location
D906
B-2
D907
C-3
D908
C-3
D909
B-2
D910
A-2
D911
C-2
D912
C-2
D913
C-3
D914
C-2
D916
C-2
D917
B-2
D918
C-2
D919
B-2
D920
B-2
D921
B-2
• Semiconductor
Location
6
* D916 - D919
MX: 1N5401
EXCEPT MX: 1N5401M
RY901
LF901
C905
C908
C909
D906
D916
D919
D914
D912
D920
D921
R901
R902
D907
D908
D910
D909
CN902
T902
R911
MX
T901
C906
D917
D918
C907
C911
D911
D913
C912
C910
CN901
0.022
0.022
0.022
1SS133T-77
1N4002B
1N4002B
1SS133T-77
1SS133T-77
47k
47k
1N4002B
1N4002B
1N4002B
1N4002B
3.3M
1/2W
0.022
*
*
*
*
0.022
0.022
1N4002B
1N4002B
0.022
0.022
6P
AC IN
26
26
HCD-EP414
LEVEL SHIFT
INTERFACE
INTERFACE
INTERFACE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
21
22
23
24
25
26
27
28
19
18
17
16
15
F
R
R
F
F
R
R
F
R
R
F
F
MUTE
THERMAL
SHUTDOWN
VREFOUT
VREFIN
POWVCC
CH1FIN
CH1RIN
CH2FIN
CH2RIN
CH2OUTR
CH2OUTF
CH1OUTR
CH1OUTF
CAP
AIN1
CAP
AIN2
GND
PRFVCC
MUTE
POWVCC
CH4SIN'
CH4SIN
CH4BIN
CH3FIN
CH3RIN
CH3OUTR
CH3OUTF
CH4OUTR
CH4OUTF
CAP
A
IN3
GND
• IC Block Diagrams
IC101
CXD3017Q
IC102
BA5974FP-E2
TE
RFDC
CE
IGEN
AVSS0
ADIO
AVDD0
CLTV
FILO
AVSS3
VSS
AVDD3
DOUT
VDD
PCO
FILI
ASYO
ASYI
RFAC
BIAS
SSTP
DFCT
MIRR
MDP
LOCK
FOK
SFDR
VSS
TEST
FRDR
FE
VC
VC
COUT
SE
XTSL
TES1
SRDR
TFDR
FFDR
TRDR
TRDR
2
1
70
71
68
69
66
67
64
65
62
61
63
73
74
72
75
76
77
78
79
80
4
XRST
3
SQCK
SQSO
5
9
8
7
6
56
60
53
54
55
59
57
58
51
52
48
49
50
47
44
45
46
43
41
42
XLAT
CLOK
SENS
SYSM
DATA
XUGF
XPCK
GFS
C2PO
WFCK
10 11 12 13 14 15 16 17 18 19 20
21
22
23
24
25
26
32
33
30
31
36
37
34
35
39
40
38
28
27
29
SPOA
ATSK
SCLK
VDD
SCOR
SPOB
XLON
XTAI
XVDD
EMPH
AVDD1
AOUT1
AIN1
XTAO
XVSS
XVSS
AIN2
AOUT2
AVDD2
RMUT
LOUT2
LOUT1
BCK
LRCK
PCMD
LMUT
AVSS1
AVSS2
CPU
INTERFACE
SERVO AUTO
SEQUENCER
SERIAL IN
INTERFACE
OVER SAMPLING
DIGITAL FILTER
3rd ORDER
NOISE SHAPER
PWM
PWM
EFM
DEMODULATOR
TIMING
LOGIC
DIGITAL
OUT
D/A
INTERFACE
DIGITAL
PLL
ASYMMETRY
CORRECTOR
CLOCK
GENERATOR
MIRR, DFCT,
FOK
DETECTOR
DIGITAL
CLV
SUBCODE
PROCESSOR
SERVO
INTERFACE
SERVO DSP
FOCUS
SERVO
SERVO
TRACKING
SERVO
SLED
SERVO
PWM GENERATOR
FOCUS PWM
GENERATOR
TRACKING
PWM GENERATOR
SLED PWM
GENERATOR
16K
RAM
ERROR
CORRECTOR
INTERNAL BUS
A/D
CONVERTER
OPERATIONAL
AMPLIFIER
ANALOG SWITCH
– CD Board –
IC103
CXA2581N-T4
RW/ROM
RW/ROM
EQ ON/OFF
VOFST
VOFST
DVC
VC
VC
VC
RW/ROM
VC
DVC
30
29
28
+
–
+
–
DVC
VCC
DVC
27
26
25
24
RW/ROM
EQ
23
22
21
20
19
RFAC
VCA
VCC
+
–
DVC
+
–
+
–
RW/ROM
VC
RW/ROM
DVC
+
–
3
A
B
C
D
B
C
C
A
A
A
B
C
C
D
B
C D
D
+
–
1
2
APC AMP
5
6
7
8
9
4
RFAC
SUMMING
AMP
RW/ROM
APC-OFF
(Hi-Z)
RW/ROM
(H/L)
VOFST
VC
RW/ROM
+
–
10
11
GM
GM
18
17
16
B
D
A
C
13
14
15
12
EQ IN
LD
PD
GND
A
B
C
D
AC SUM
E
F
DVCC
DVC
RFAC
SW
DC OFST
RFDCI
RFDCO
VC
RFC
VFC
BST
RFG
VCC
CEI
CE
TE BAL
TE
FEI
FE
27
HCD-EP414
REC-O_L
REC-O_R
TUNER-R
TUNER-L
CD-L
A
UX-L
OUT
-L
OUT
-R
T
ON_L-L
T
ON_L-R
A
UX-R
CD-R
VSS
T
ON_H-R
T
ON_H-L
T
APE-L
T
APE-R
IC302
BD3881FV
– MAIN Board –
IC303
LA4663N
FILTER
IN1
PRE GND
IN2
STANDBY
SIGNAL MUTE
VCC1
VCC2
–OUT2
+OUT2
POWER GND1
POWER GND2
+OUT1
–OUT1
+
–
+
–
INPUT
AMP
INPUT
AMP
OUTPUT
AMP
OUTPUT
AMP
1 2 3
4 5
6 7 8 9 10 11 12 13 14
NC
15
28
HCD-EP414
6-11. IC Pin Function Description
• IC801
LC877356A-51E1 (SYSTEM CONTROLLER)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45 to 53
54
55
56 to 79
80 to 82
83 to 86
I/O
O
O
O
I
O
O
I
I
O
O
I
I
O
—
I
O
—
I
I
I
I
I
I
I
O
I
I
O
I
O
O
O
O
O
O
I
I
I
I
O
O
O
O
—
O
—
—
O
—
O
Pin Name
TU MUTE
MD LED
TU DO
TU DI
TU CLK
TU CE
RDS DATA
TA ENDSW
CD PWM1
CD PWM2
RESET
XT1
XT2
VSS1
CF1
CF2
VDD1
I POWER MONITOR
KEY0
KEY1
AREA
VOL ENCODER
I POWER DOWN
TA-SW
CLK SHIFT
RDS CLOCK
CD SCOR
TA SOL
RMC
TA R/P
CD DATA
CD XLT
CD CLK
CD ON
CD SQCK
CD SENS
CD SQSO
TU STEREO
TA PLAYSW
ST/BY
TA LED
TU LED
CD LED
NC
SEG
VDD2
VSS2
SEG
LCD BIAS3 to 1
LCD COM0 to 3
Description
Muting signal output to the tuner
MD LED control signal output (not used)
Data output to the tuner
Data input from the tuner
Clock signal output to the tuner
Tuner chip enable signal output to the tuner
RDS data input from the tuner
Tape deck reel switch signal input
PWM1 signal output to the CD unit
PWM2 signal output to the CD unit
Reset signal input from the reset IC (IC803)
Resonator terminal (32.768kHz)
Resonator terminal (32.768kHz)
Ground terminal
Resonator terminal (8.64MHz)
Resonator terminal (8.64MHz)
Power supply terminal
AC power detection signal input
Key AD input 0
Key AD input1
Destination setting terminal
Encoder signal input from the volume encoder
Power down detection signal input
Tape switch status signal input from the tape deck
Clock shift control signal output
RDS clock input from the tuner
SCOR (SUBQ request) signal input from the CD unit
Solenoid control signal output to the tape deck
Remote sensor signal input
REC/PLAY control signal output to the REC/PLAY switch circuit
Data output to the CD unit
Latch signal output to the CD unit
Clock output to the CD unit
CD power supply control signal output
SUBQ clock output to the CD unit
SENS signal input from the CD unit
SUB-Q data input from the CD unit
Stereo/mono detection signal input from the tuner
Play switch signal input from the tape deck
STANDBY LED control signal output
TAPE LED control signal output (not used)
TUNER LED control signal output (not used)
CD LED control signal output (not used)
Not used (open)
Segment signal output to the liquid crystal display module
Power supply terminal
Ground terminal
Segment signal output to the liquid crystal display module
Output bias power supply terminal for the liquid crystal display module
Common signal output to the liquid crystal display module
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