Panasonic SC-HC55EG Service Manual ▷ View online
113
15 Schematic Diagram
15.1. Schematic Diagram Notes
(All schematic diagrams may be modified at any time with
the development of new technology)
Notes:
the development of new technology)
Notes:
• Important safety notice:
Components identified by
mark have special characteris-
tics important for safety.
Furthermore, special parts which have purposes of fire-retar-
dant (resistors), high quality sound (capacitors), low-noise
(resistors), etc are used.
When replacing any of components, be sure to use only
manufacturer’s specified parts shown in the parts list.
Furthermore, special parts which have purposes of fire-retar-
dant (resistors), high quality sound (capacitors), low-noise
(resistors), etc are used.
When replacing any of components, be sure to use only
manufacturer’s specified parts shown in the parts list.
• In case of AC rated voltage Capacitors, the part no. and val-
ues will be indicated in the Schematic Diagram.
AC rated voltage capacitors:
C702, C710, C725, C727, C728
AC rated voltage capacitors:
C702, C710, C725, C727, C728
• Resistor
Unit of resistance is OHM [
Ω] (K=1,000, M=1,000,000).
• Capacitor
Unit of capacitance is
μF, unless otherwise noted. F=Farads,
pF=pico-Farad.
• Coil
Unit of inductance is H, unless otherwise noted.
•
*
REF IS FOR INDICATION ONLY.
• Voltage and signal line
S641:
LEFT switch.
S642:
RIGHT switch.
S643:
CENTRE switch.
S644:
INTERLOCK switch.
S645:
switch.
S901:
POWER switch (POWER
).
S902:
IPOD OPEN/CLOSE switch.
S903:
IPOD switch.
S904:
CD switch.
S905:
RADIO/AUX switch.
S906:
STOP/CALL switch (Q).
S907:
PLAY/PAUSE/CANCEL CALL switch (
/
).
S911:
REV SKIP switch (
).
S912:
FWD SKIP switch (
).
S913:
VOL- switch.
S914:
VOL+ switch.
S915:
CD OPEN/CLOSE switch (
).
S7201:
REST switch.
: +B Signal Line
: -B Signal Line
: CD Audio Input Signal Line
: CD Audio Input Signal Line
:Tuner/Bluetooth/AUX/MIC Audio Input
SIGNAL LINE
: Audio Output Signal Line
SIGNAL LINE
: Audio Output Signal Line
: iPod/iPhone/USB SIGNAL LINE
: FM SIGNAL LINE
: AM SIGNAL LINE
114
115
15.2. CD SERVO CIRCUIT (1/2)
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C
D
B
E
G
H
F
A
CD SERVO CIRCUIT
SCHEMATIC DIAGRAM - 1
TO CD SERVO
CIRCUIT (2/2)
: +B SIGNAL LINE
1
2
3
4
P1
TO OPTICAL
PICK UP UNIT
: CD AUDIO INPUT SIGNAL LINE
: iPod/iPhone/USB SIGNAL LINE
SC-HC55EG
CD SERVO
CIRCUIT
2/2
1/2
CN7001
OUTR
AV
REF
AVSS
1
AV
DD1
RFOUT
AVSS2
TRP
FOP
VREF
CENV
AVDD2
RFOENV
TRVP
SPINDER
SPOUT
OSCIN
CTRCRS
TRVP2
TRACKING
TRAVERSE
IO
V
DD
D
V
DD
R
A
M_CLK
DVSS
DSLF
PLLF
IREF
ARFFB
RFIN
ARFIN
ARFOUT
TE
S
T0
DGND1
ARFDC
[144]VCOF
[1]OUTL
B
D
A
C
E
F
LD
PD
[143]PLFO
A5
A4
A4
[108]A7
A6
A3
[74]EECS
EED
A
T
A
CP_R
S
T
CP_
S
D
A
CP_
S
CL
A
9
D
2
D
6
D0
D1
A
8
NC
NC
S
R
A
M
V
DD1
S
R
A
M
V
DD
2
REGION
D5
D4
D
7
MCLK
MD
A
T
A
S
T
A
TU
S
D3
S
REGOUT
S
REG
V
DD
N
S
T
A
NDB
Y
NC
IO
V
DD4
D
VSS6
D
V
DD5
NPWNDOWN
PC
A11
[36]A10
A
1
A
0
A2
D
V
DD
D
VSS
TE
S
T1
DEBUG-SDATA
DVDD
IOVDD
MN947_REQ_OUT
MN16K_REQUEST_IN
DVSS
TE
DVSS
NRST
[73]EECLK
BA0
TX
BA1
DVDD
VDD3
VDD18
RESTW
IOVDD
VPPEX
USBIN
TRCCLK / NC
TRCD3 / NC
TRCD1 / NC
TRCD2 / NC
TRCST / NC
TRCDO / NC
DEBUG-SCLK
DEBUG-EXTGO
NWE
BCLK
LRCK
IPOD_DET
DIGITAL
DATA
AUDIO
SRDATA
NCAS
NRAS
MODEL_
S
EL
IPOD_CTRL_SW
IPOD_ACC/VTUNER
X
1
M
X2
M
X
1
D
V
DD
D
VSS
D
V
DD
D
VSS
REGON
U
S
BDP
IO
V
DD
X2
D
VSS
C
S
EL
U
S
B_OE
IO
V
DD
IPOD_PCONT
U
S
BDM
IO
V
DD
U
S
BNPP
U
S
B
AV
DD
U
S
BNOC
1
6
.9344M CLK
U
S
B_sel
MN6627947RB
IC7001
SERVO PROCESSOR
C0GBY0000117
IC7002
MOTOR DRIVER
M7302*
SPINDLE MOTOR
M7301*
TRAVERSE MOTOR
0
R7702
C7755
10
C7752
0.01
C7753
10
C7265
0.1
A6
A
5
A
4
A
3
R7111
10K
1000P
C
7
340
+
F-
B0ECKM000016
D7343
1K
R
7
340
10
C7341
R
7
341
1.
2
K
B0ECKM000016
D7342
1K
R
7
315
R7332
12K
4.7K
R7329
3.3K
R7323
0.015
C
7
338
5.6K
R7327
R
7
3
2
1
1.5K
47K
R7331
C
7
315
0.15
R
7
3
22
5.
6
K
27K
R7328
1
2
00P
C
7
35
2
1800P
C
7
339
100K
R7349
R
7
3
2
5
100
LID_LEFT
LID_RIGHT
R7336
10
R7335
100
0.01
C7741
K7724
0
C7335
0.01
10V100
C7334
M-
M+
0
R7707
C7615
10
10
C7616
0.1
C7613
USBIN
SDATA
EXTG0
SCLK
D
6
D
7
D1
A
8
R-CLK
A
9
A7
D0
D4
D5
D
2
D3
0.1
C
72
3
7
S
T
A
TU
S
MD
A
T
A
0.1
C
72
38
0.1
C7163
0.1
C
72
34
10
C
72
35
EEC
S
EECLK
IPHONE_R
S
T
IPHONE_CLK
EED
A
T
A
IPHONE_
S
D
A
REGION
MCLK
REGION
NRST
DVDD-1.2
C7269
1
C7268
0.01
C7263
0.1
REST_SW
C7216
680P
680P
C7161
0.1
R
72
1
2
8
2
0
1000P
C
72
41
0.08
2
C
72
18
C7226
1000P
1000P
C7225
1K
R
72
18
R
72
1
7
1K
C
72
3
6
10
0.01
C7230
10
C7239
R
72
14
4
7
0
C7152
0.1
1M
R7220
0.1
C7162
R
7267
1K
R7221
100
GND
3
1
2
X7201
U
S
BDP
U
S
BDM
2
.7
K
R
72
13
0.33
C
72
13
R7712
0
R7717
0
K7102
0
0
R7721
R7211
82K
C7244
0.015
0.1
C7217
C7223
10
4.
7
R
76
01
B1ADCF000001
LASER DRIVE
Q7601
0.01
C
767
0
10
C
76
01
R7650
5.6
U
S
B_
S
EL
0
R7731
0.01
C
72
04
10
C
72
08
R7761
2.2M
C7102
0.47
C7754
10
0.022
C7107
3300P
C7142
NCAS
VTUNER
CD_IIS_LRCK
NWE
CD_IIS_BCLK
CD_IIS_SRDATA
NRAS
C7206
27P
27P
C7205
X7205
C
7
151
0.1
R
72
0
7
10K
R7208
0
0
R7151
1K
R
72
05
VCC
A10
3.3V
A0
A1
A2
A1
A2
A11
DVSS
C7267
0.1
CD_IIS_MCLK
MLD
BLKCK
C7264
0.1
109
72
107
84
85
80
81
77 76
78
74 73
75
79
83 82
93
94
92
96 95
89
90
87
88
91
99
97
98
86
105
101
102
100
104 103
106
108
114
113
115
111
112
129
127
126
128
130
123
122
125
124
142
140
141
144
143
138
136
134
132
131
133
135
137
139
117
116
119
118
120
121
110
66
62
60
58
56
54
52
53
55
57
59
61
64
63
48
46
45
47
49
40
42
41
38
37
36
39
34 35
44
43
32
30
29
31
33
51
50
27 28
25
23
21
20
19
22
24
26
65
5
6
3
1
2
4
13 14
11 12
18
16
15
17
9
8
7
10
71
69
68
67
70
F+
D7341
B0ECKM000016
T-
T+
19
18
17
20
15
16
14
12
11
10
13
22
30
21
9
28
27
24
25
2
1
6
29
7
8
3
4
5
F+
T-
T+
F-
6
7
5
9
13
15
14
11
10
12
21
22
18
16
17
20
19
8
1
3
4
2
24
23
NOTE: “ * ” REF IS FOR INDICATION ONLY
LD-GND
GND(PD)
VCC(5V)
D
A
F-
F+
C
T+
T-
E
B
NC
CD/DVD SW
VREF (2.1V)
IN1
IN
2
NC
NC
NC
NC
NC
V
REF
MUTE
FC-IN
F+
PGND
2
GND
D-
D+
F-
P
V
CC
NC
GND
TR-
V
IN_TR
AV
.
Tr
aY
_TL
RE
V
FWD
V
CC
+
D1-
T-
TR+
D1+
MD / LPD
CD-LD
NC
NC
NC
NC
F
GND
NC
T+
64
TP
63
TP
37
TP
36
TP
38
TP
39
TP
33
TP
34
TP
71
TP
25
TP
46
TP
30
TP
29
TP
28
TP
27
TP
26
TP
44
TP
45
TP
47
TP
49
TP
24
TP
94
TP
13
TP
4
TP
32
TP
31
TP
1
71
TP
TL
51
TP
50
TP
23
TP
90
TP
K7101
0
DGND
D7650
B0BC5R6A0266
LDSW
23
26
21
TP
48
TP
K7001
0
K7011
0
116
15.3. CD SERVO CIRCUIT (2/2)
15
16
17
18
19
20
21
22
23
24
25
26
27
28
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A
C
D
B
E
G
H
F
A
SCHEMATIC DIAGRAM - 2
TO CD SERVO
CIRCUIT (1/2)
CIRCUIT (1/2)
: +B SIGNAL LINE
CD SERVO CIRCUIT
1
3
2
4
P1
TO
MAIN CIRCUIT
(CN7002)
IN SCHEMATIC
DIAGRAM - 6
MAIN CIRCUIT
(CN7002)
IN SCHEMATIC
DIAGRAM - 6
27
1
SC-HC55EG
CD SERVO
CIRCUIT
2/2
1/2
TO
MAIN (USB/iPod)
CIRCUIT
(CN7902*)
IN SCHEMATIC
DIAGRAM - 9
MAIN (USB/iPod)
CIRCUIT
(CN7902*)
IN SCHEMATIC
DIAGRAM - 9
FOR DEBUG
: CD AUDIO INPUT SIGNAL LINE
: iPod/iPhone/USB SIGNAL LINE
A2
A
5
A
4
V
DD
A
3
D
Q
15
VSS
D
Q
1
D
Q
14
V
DD
D
Q
0
NC
D
Q
8
D
Q
9
NC
A6
A
8
A
9
CLK
CKE
A7
D
Q
13
D
Q7
V
DD
D
Q2
D
Q
3
VSSQ
D
Q
5
D
Q6
/LDOM
D
Q
4
V
DD
Q
B
A
0
A
10/
A
P
/C
AS
/WE
/C
S
A
1
A
0
/R
AS
VSSQ
V
DD
Q
D
Q
1
2
D
Q
10
UD
Q
M
VSSQ
D
Q
11
V
DD
Q
VSSQ
NC
NC
NC
GND
EE_DAT
VCC
EE_CLK
WP
C3ABMY000027
IC7704
SDRAM
C3EBFC000042
IC7851
EEPROM
MFI341S2164
IC7501
MICRO-CONTROLLER
R7265
100
R7266
100
C
72
33
0.01
0
33
BLKCK
NRST
STATUS
CD_IIS_LRCK
R7264
100
R7253 100
MDATA
R7262
100
K7202
100
C
7626 10
0.01
C
7
1
66
MCLK
MLD
CD_IIS_SRDATA
USBIN
R
7
504
10K
R
7
503
10K
R
7
505
10K
R
7
50
2
100
R
7
501
100
C
7
50
2
0.01
330P
C
7
501
1K
R7254
C7243
0
4
3
1
2
S7201
D
6
NC
AS
A
1
A
0
A
3
A2
NR
AS
A
10
A
11
D
7
NWE
C
7
1
6
0
0.1
A
9
D
2
D4
D3
C
7
159
0.1
1
C
7
15
6
D1
D0
D5
C
7
155 1
D1
D0
C
7
150
0.1
EEC
S
C
7
85
2
330P
2
1
7
8
4
5
3
6
E
X
TG0
NR
S
T
S
CLK
S
D
A
T
A
R-CLK
R
7
158
33
2
3
1
5
4
CN7801
D
7
C
7
158 0.1
0.1
A
5
A6
A
4
A
8
A
9
A7
2
1
49
11
12
10 9
40
39
41
13
38
6
4
5
45
47
46
8
7
43
42
44
27
26
24
25
15 14
16
17
19
20
22
18
21
30
29
34
33
35 36 35
31 32
23
28
3
48
50
D3
D4
D
2
C
7
154
D
6
C
7
15
7
0.01
D5
IPHONE_SDA
IPHONE_CLK
2
1
20
19
15
14
17
16
18
6
7
4
3
5
12
13
10
11
8
9
IPHONE_RST
0.01
C
7
851
C7853
330P
EED
A
T
A
R7853
3.3K
EECLK
REST_SW
10K
R7255
K7268
0
10
C7207
M+
M-
LID_LEFT
LID_RIGHT
VTUNER
DVSS
DGND
DGND1
3.3V
C
72
53
CD_IIS_BCLK
K7701
CD_IIS_MCLK
K7702
K7705
K7703
K7704
J0JBC0000012
J0JBC0000012
J0JBC0000012
J0JBC0000012
1
6
7
5
9
12
13
10
11
18
25
26
23
24
27
20
19
22
21
16
14
15
17
8
2
4
3
C7704
15P
LDSW
NC
NC
NC
I2C_SCL
NC
NC
MODE0
I2C_SDA
NC
NC
NC
NC
VSS
NC
5V
5V
N
MODE1
VCC
9V
NC
NRESET
NC
DGND
PGND
LOADING
OPEN_SW
REST SW
CD_SI/ MDATA
CD_SO/ STAT
CD_RESET/ RST
LDSW
USB_IN
CD_SREQ/ BLKCK
CD_SCLK/ MCLK
CD_MREQ/ MLD
DGND
CD_IIS_MCLK
3.3V
M+
M
VTUNER_IN
LID_LEFT
LID_RIGHT
5V
CD_IIS_LRCK
CD_IIS_BCLK
CD_IIS_SRDATA
RESET SW
OCD_SCL
VSS
OCD_SDA
STBY3.3V
NRST
CN7002
1
TP
11
TP
10
TP
18
TP
14
TP
20
TP
12
TP
7
TP
8
TP
9
TP
2
TP
3
TP
USBDM
USB_SEL
CN7901
USBDP
1K
R7896
C
7
903
0.01
R7904
33
R7902
33
R7901
R7903
2
3
1
5
4
D-
D+
DGND
IPOD_DET
VBUS
22K
22K
16
TP
VSS
-
52
TP
CP3 CP4
CP31
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