Sony HCD-EC68USB / MHC-EC68USB Service Manual ▷ View online
HCD-EC68USB
HCD-EC68USB
21
21
6-2. BLOCK DIAGRAM - USB Section -
BUS1
BUS0
BUS2
BUS3
BUS3
BUCK
CCE
REQ
LB
I/O0 – I/O15
D0 – D15
S-RAM
IC921
39
UB 40
OE 41
WE 17
CE 6
79 D+
80 D–
77 USBOC
USB CONTROLLER
IC901
31 O-USB-RXD/O-DMP-RXD
SYSTEM CONTROLLER
IC301 (2/3)
CN902
(USB)
3
2
1
D+
D–
78 USBPON
70 CS2
64 RD
65 WR
66 SRLLB
67 SRLUB
64 RD
65 WR
66 SRLLB
67 SRLUB
VBUS
DATA, CLOCK,
A-IN, BCK, LRCK,
GATE, ST-REQ
A-IN, BCK, LRCK,
GATE, ST-REQ
BUS0 – BUS3,
BUCK, CCE, REQ
BUCK, CCE, REQ
VBUS POWER
ON/OFF SWITCH
IC915
5
1
4
OUT
EN
3
FLG
IN
VBUS
+5V
93
DATA
92
BCK
BCK
A-IN
LRCK
GATE
GATE
ST-REQ
71
LRCK
94
GATE
97
ST-REQ
55
BUS0
56
BUS1
88
RXD1
29 I-USB-TXD/I-DMP-TXD
87
TXD1
34 O-USB-DI/5V-ON/O-TP-REC-MUTE
2
DI
30 I-USB-DO/I-DMP-5V-DET
84
DO
45 I-DMP-DET/O-USB-RST
1
/RESET
57
BUS2
58
BUS3
59
/BUCK
60
/CCE
96
REQ
7 – 10, 13 – 16,
29 – 32, 35 – 38
18 – 25, 28 – 35
A0 –
A15
A1 –
A16
44 – 42, 27 – 24,
21 – 18, 5 – 1
37 – 43, 46 – 54
73
X2
75
X1
X901
9MHz
: USB
CLOCK
DATA
85
DATA
86
CLOCK
: CD PLAY
SIGNAL PATH
R-ch is omitted due to same as L-ch.
C
D
(Page 20)
(Page 20)
HCD-EC68USB
HCD-EC68USB
22
22
SYSTEM CONTROLLER
IC301 (3/3)
INPUT SELECTOR,
ELECTRICAL VOLUME
IC602
4
19
TUNER-L
OUT-L
9
SEL-L
12
VOL-L
TUNER-L
A
6 CD-L
8 AUDIO-L
CD-L
B
M601
(FAN)
I-RST 54
I-HOLD 42
49
I/O-I2C-DA
TA
50
I/O-I2C-CLK
26
SDA
TA
25
SCLK
3
O-POWER
• SIGNAL PATH
: CD PLAY
• R-ch is omitted due to same as L-ch.
: FM
: AUDIO IN
FAN MOTOR
DRIVE
Q601, 602
PROTECT
DETECT
Q603
4
O-CD-ON
RELAY
DRIVE
Q619
PROTECT
DETECT
Q611, 612
PROTECT
DETECT
Q605, 606
OVER LOAD
DETECT
Q101, 102
D103
POWER AMP
IC101
+1.5V
REGULATOR
IC201
CD +1.5V
+9V
REGULATOR
IC601
+9V
+5V
REGULATOR
IC701
VBUS +5V
RELAY B+
+3.3V
REGULATOR
Q624
REGULATOR
CONTROL
Q622
VOLTAGE
DETECT
Q305, 306
+4V
REGULATOR
Q302 - 304
D631
+9V
CD +3.3V
+3V
REGULATOR
Q801
TUNER +3V
+5V
REGULATOR
Q802
TUNER +5V
SYSTEM +3.3V
D601
R-CH
D303
D055
D617
D628
D602, 606
M
M
DC DETECT
Q618
STANDBY
SWITCH
Q608
J492
RY602
R-CH
PHONES
J491
AUDIO IN
SPEAKER
IMPEDANCE
USE 6
Ω
+
–
–
–
+
R
L
TB602
R-CH
R-CH
2
O-AMP-ON
RY001 (AEP)
RY002 (EXCEPT AEP)
PT001 (AEP)
PT002 (EXCEPT AEP)
SUB POWER TRANSFORMER
PT003 (EXCEPT AEP)
PT004 (AEP)
MAIN POWER
TRANSFORMER
VSTBY
+VH
-VH
(AC IN)
RECT
D051, 052
RECT
D607 - 610
RECT
D629, 630
I-P-MONI 36
RELAY
DRIVE
Q604
• Abbreviation
AR :
Argentina
model
E2 : 120V AC area in E model
E51 : Chilean and Peruvian model
MX : Mexican model
E51 : Chilean and Peruvian model
MX : Mexican model
X302
6MHz
X1
X0
92
93
X301
32.768kHz
X1A
X0A
14
13
I-RMC
9
REMOTE CONTROL
RECEIVER
IC302
LED DRIVE
Q301
LED301
O-LED-STBY
28
LCD301
LIQUID
CRYSTAL
DISPLAY
ROTARY
ENCODER
S301
VOLUME
SW301, 303 - 308,
SW309, 310
SW311 - 319
(FRONT PANEL KEYS)
I-KEY1, I-KEY2, I-KEY-WAKEUP/VOL
37, 38, 41
COM0 - COM1
59 - 62
SEG0 - SEG32
63, 64, 67 - 89, 94 - 100, 1
I/
STANDBY
VOLTAGE
SELECTOR
S001
(E2, E51)
(AEP, MX, AR)
(Page 20)
(Page 20)
6-3. BLOCK DIAGRAM - MAIN Section -
Ver. 1.1
HCD-EC68USB
HCD-EC68USB
23
23
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specifi ed.
• f :
internal
component.
• 2 : nonfl ammable resistor.
• C : panel designation.
• 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.
• B : B– Line.
• C : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• C : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark : CD PLAY
– Other Boards –
no mark : TUNER (FM/AM)
• Voltages are taken with a VOM (Input impedance 10
no mark : CD PLAY
– Other Boards –
no mark : TUNER (FM/AM)
• Voltages are taken with a 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 :
FM
f :
AM
J
: CD PLAY
i : AUDIO IN
d :
d :
USB
• Abbreviation
AR :
AR :
Argentina
model
E2
: 120V AC area in E model
E51
: Chilean and Peruvian models
MX
: Mexican model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• W : indicated side identifi ed with part number.
• f : Internal component.
•
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• W : indicated 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
• Circuit Boards Location
KEY POWER board
PANEL board
MAIN board
LOW AMP board
PT board
REG board
JACK board
USB CONN board
KEY CD board
USB board
CD board
B
These are omitted.
C E
Q
The components identifi ed by mark 0 or dotted line with
mark 0 are critical for safety.
Replace only with part number specifi ed.
mark 0 are critical for safety.
Replace only with part number specifi ed.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
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 from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Ver. 1.1
HCD-EC68USB
HCD-EC68USB
24
24
R402
C404
C403
R405
R408
IC401
R108
R109
C136
C135
R128
R130
R134
R135
R136
R129
R139
R143
R142
R140
C124
C125
C122
C123
R151
C138
C137
C140
C139
C142
C141
C143
R144
C100
C107
R414
C144
C146
C145
C147
C148
C149
C150
R148
R146
C105
C104
R145
R147
R147
R149
R150
R150
C118
C117
CN301
C303
C302
C301
R102
C127
C126
R101
C103
C113
C102
C101
C1
19
C120
R105
R106
C132
R104
R154
C1
16
R153
C109
C110
R110
IC101
R210
R209
R218
R208
C217
R219
R207
R220
R206
R221
R205
R222
R204
R223
R203
R157
R156
R202
CN202
C152
C151
R224
M401
S201
M402
C405
C401
R415
R114
C153
R118
R212
R213
C106
C306
R303
R304
R302
R301
C307
Q301
C309
C128
C130
R155
C115
R111
R112
C133
R119
C112
C108
R214
R216
R121
R121
C201
C202
C204
C205
R201
C206
IC201
C207
R211
C212
X102
A
B
C
D
E
F
G
1
2
3
4
5
6
7
8
9
10
CD BOARD
(CONDUCTOR SIDE)
1-872-620-
11
(11)
(LIMIT)
M
(SPINDLE)
M
(SLED)
S
USB BOARD
CN906
TP124(VC)
TP121
(RFI)
OPTICAL PICK-UP
BLOCK
(KSM-213DCP)
1
3
5
4
CD BOARD
(COMPONENT SIDE)
1-872-620-
11
(11)
E
X102
6-4. PRINTED WIRING BOARD - CD Board -
• See page 23 for Circuit Boards Location.
•
: Uses unleaded solder.
(Page 26)
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