Sony CMT-EH55DAB / HCD-EH55DAB Service Manual ▷ View online
HCD-EH55DAB
HCD-EH55DAB
13
13
7-2. BLOCK DIAGRAM - MAIN Section -
SYSTEM CONTROLLER
IC701 (2/3)
3
CN104
(USB)
D+
D–
1
2
USB CONTROLLER
IC101
D/A CONVERTER
IC105
DAB TUNER MODULE
USB_DP
34
USB_DM
33
DATA 55
LRCK 53
BCK 54
DIN
1
LRCI
3
MCLK
2
VOUTL
AUDL
AUDR
S1_DIN
S1_DOUT
8
VOUTR 5
XOUT_PLL
XIN_PLL
40
41
X101
16.9344MHz
CLOCK SHIFT
IC104
MCLK
4
RESETX
1
SDA
13
SCL
12
BUSY
11
MCHNG
10
USB_SDA
49
USB_SCL
50
USB_BUSY
19
MCHING
18
USB_RESET
17
R-CH
R-CH
B
R-CH
INPUT SELECTOR,
ELECTRICAL VOLUME
IC401
28
REC1O
18
OUT1
13
SD
23 C1
21 B1
2 PB1P
19 A1
R-CH
CD-L
A
J105
AUDIO IN
CNP802
ANTENNA
DAB/FM
J102
PHONES
SPEAKER
+
–
–
–
+
R
L
J101
BIAS OSC
L501
OSC
Q507
TPR501
(REC/PB)
TAPE
MECHANISM
DECK
L-CH
SW501-1
SW501
(REC/PB)
PB
S
REC
R-CH
R-CH
POWER
AMP
IC301
33
FUNC_SDA
+
X701
32768Hz
14
13
X3
X2
92
93
X1
X0
X702
5.53MHz
SW501-2
40
TP_ST
ATE
DC
DETECT
Q123
DC_DET
AUDIO SELECT
SWITCH
IC451
LOW-PASS
FILTER
IC304
30
AUDIO_SW
31
DAB_DO
29
DAB_DI
34
AMP_ON
• SIGNAL PATH
: CD PLAY
: TAPE PLAY
: REC
: REC
• R-ch is omitted due to same as L-ch.
: USB
: AUDIO IN
: TUNER
(Page 12)
(Page 14)
HCD-EH55DAB
HCD-EH55DAB
14
14
7-3. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -
RMC
9
SYSTEM CONTROLLER
IC701 (3/3)
(AC IN)
F001
PT005
POWER
TRANSFORMER
SYS +3.3V
D702
D801, 804
D191 – 193
D372
AMP B+
RECT
D107 – 110
B+ SWITCH
Q351, 352
AC DETECT
Q371, 372
AC DETECT
Q121, 122
VOLTAGE
DETECT
Q705, 706
RECT
D111, 113
VSTBY
+9V
REGULATOR
Q101 – 103
DAB +9V
VM +7V
+9V
46
POWER_ON
42
HOLD
36
P_MONI
54
REST
REMOTE CONTROL
RECEIVER
IC703
LED DRIVE
Q707
LED701
(LCD BACK LIGHT)
LED
1
LED DRIVE
Q711, 712
LED_STBY
22
LED702
LCD702
LIQUID
CRYSTAL
DISPLAY
48 RE_VOL
2 CD OPEN/CLOSE
ROTARY
ENCODER
SW700
VOLUME
STANDBY
SW701 – 711
(FRONT PANEL KEYS)
SW750
(CD LID OPEN/CLOSE DETECT)
KEY1 – KEY3
37, 38, 41
COM0 – COM3
59 – 62
SEG0 – SEG31
63, 64, 67 – 89, 94 – 100
RESET
SWITCH
Q704
LF901
LINE FILTER
REGULATOR
Q701 – 703
+3.3V
REGULATOR
IC707
+5V
REGULATOR
IC102
+3.3V
REGULATOR
Q191
+1.2V
REGULATOR
IC601
+1.5V
REGULATOR
IC201
+1.5V
REGULATOR
IC102
VOLTAGE
DETECT
IC101
B+ SWITCH
Q713, 714
USB AVDD +3.3V
USB DVDD +3.3V
USB +1.5V
DAB +3.3V
CD +3.3V
VDD +1.5V
DAB +1.2V
24
USB_REG_ON
28
DAB_3.3V
27
DAB_1.2V
23
CD_ON
RECT
D901, 902
+5V
REGULATOR
IC901
VBUS POWER
ON/OFF SWITCH
IC103
VBUS B+
21
USB_EN
20
USB_FLG
+
B+ SWITCH
Q196 – 198
B+ SWITCH
Q194, 195
DC_DET
B
(Page 13)
HCD-EH55DAB
HCD-EH55DAB
15
15
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• f :
internal
component.
• C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• Voltages and waveforms are dc with respect to ground
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
– CD board –
no mark : CD PLAY
– USB board –
no mark : USB
– Other board –
no mark : TUNER
( ) : CD PLAY
‹‹ ›› : USB
[ ] : TAPE PLAY
{ } : REC
no mark : CD PLAY
– USB board –
no mark : USB
– Other board –
no mark : TUNER
( ) : CD PLAY
‹‹ ›› : USB
[ ] : TAPE PLAY
{ } : REC
*
: Impossible to measure
• Voltages are taken with VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
TUNER
J
: CD PLAY
N :
USB
E :
TAPE
PLAY
j :
REC
h :
AUDIO
IN
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• W : indicates side identifi ed with part number.
• f :
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• W : indicates side identifi ed with part number.
• f :
internal
component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C E
Q
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
fro—m the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
fro—m the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Circuit Board Location
MAIN board
PANEL board
CD board
PT-VBUS board
USB board
MODULE
(DAB tuner)
(DAB tuner)
HCD-EH55DAB
HCD-EH55DAB
16
16
•
: Uses unleaded solder.
• See page 15 for Circuit Boards Location.
7-4. PRINTED WIRING BOARD - CD Board -
R150
R149
R148
R108
R154
R153
C148
C1
10
C109
C301
C30
3
C302
C104
R1
10
C1
16
C404
R203
R204
R205
R206
R207
R208
R209
R210
R219
R223
R222
R147
R221
R218
R146
R145
C150
R113
C403
R202
C151
C108
C105
C147
C146
C145
C152
C1
18
C1
17
C144
C101
C125
CN201
C143
C12
0
R144
R157
C142
C141
C140
C100
C107
R408
R156
C124
C127
C126
CN301
R101
C1
19
C102
R415
R414
C103
R405
C113
R102
R402
R105
R106
C132
C138
C137
R135
R134
R136
R13
0
R12
8
R12
9
R143
R139
C13
6
R120
R114
C153
C112
R125
R126
C149
C139
R127
R1
18
R140
R151
C122
C123
R220
R104
S201
R155
C128
C106
C201
R304
R302
C30
9
C205
C207
C307
R303
C133
R111
R112
C115
R21
1
Q301
R301
C204
C202
C20
6
C306
R212
C40
1
C130
C405
IC201
IC401
IC101
R201
R142
CD BOARD
(COMPONENT SIDE)
CD BOARD
(CONDUCTOR SIDE)
3
1
4
5
1
7
8
14
28
22
21
15
TP124
(VC)
TP122
(RFEQO)
1
25
26
50
51
75
76
100
1
21
A
PANEL
BOARD
CNP701
16
1
1-872-135-
11
(11)
1-872-135-
11
(11)
OPTICAL PICK-UP BLOCK
(KSM-213CDP)
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
E
(LIMIT)
M401
(SPINDLE)
M402
(SLED)
M
M
X102
(Page 20)
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