Sony CMT-EH10 / HCD-EH10 Service Manual ▷ View online
HCD-EH10
13
13
HCD-EH10
CD SECTION
Note:
1.
CD Block is basically constructed to operate without adjustment.
2.
Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3.
Use an oscilloscope with more than 10 MW impedance.
4.
Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
5.
Check the focus bias check when optical pick-up block is replaced.
FOCUS BIAS CHECK
Procedure :
1. Connect oscilloscope to TP (RFACI) and TP (VC) on the CD
board.
2. Press the
I/
1 button to turn the power ON.
3. Set disc (YEDS-18) on the tray and press the
CD
u button
to playback.
4. Confirm that oscilloscope waveform is as shown in the figure
below. (eye pattern)
A good eye pattern means that the diamond shape (
◊
) in the
center of the waveform can be clearly distinguished.
Checking Location:
+
–
–
CD board
TP (RFACI)
TP (VC)
TP (VC)
oscilloscope
(DC range)
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
TIME/DIV: 500 ns
level:
0.9
0.9
±
0.4 Vp-p
TP
(VC)
TP
(RFACI)
IC201
– CD Board (Conductor Side) –
HCD-EH10
14
14
HCD-EH10
SECTION 7
DIAGRAMS
7-1. BLOCK DIAGRAM – CD SERVO Section –
OPTICAL
PICK-UP BLOCK
(KSM-213CDP)
CH2OUTF
CH2FIN
FOCUS/TRACKING COIL DRIVER,
SLED/SPINDLE MOTOR DRIVER
IC402
12
6
CH2OUTR
11
CH1OUTR
13
CH1OUTF
14
CH3OUTF
17
CH3OUTR
18
SL–
SL+
TRK–
TRK+
FCS–
FCS+
2-AXIS
DEVICE
PD
LD
B
A
D
C
F
E
M402
(SLED)
M
CH4OUTF
16
CH4OUTR
15
CH2RIN 7
CH1RIN 5
CH1FIN 4
CH3FIN 23
CH3RIN 22
OPIN+ 2
CH4IN 24
OPOUT 27
FFDR
45
PD
67
F
51
E
50
D
60
C
59
B
58
A
57
LD
66
FRDR
46
TRDR
44
TFDR
43
SFDR
41
SRDR
42
MDP
38
SP–
SP+
M401
(SPINDLE)
M
CD DSP
IC201
SYSTEM CONTROLLER
IC701 (1/3)
XTAI 109
XTAO 108
SSTP 39
X201
16.9344MHz
S201
(LIMIT)
CD D +3.3V
CD
RFACO
AOUT1 112
AOUT2 117
70
RFACI
71
XRST
8
MUTE
20
XTACN 7
ACK-MP3 15
SO2
50
A
AUTOMATIC
POWER CONTROL
Q321
P76
34
P25
2
OCU0
11
IREQ-MP3 10
REQ-MP3 14
XLAT-MP3 13
CLK2 90
SC3
6
IC1
10
OCU1
12
SC2
49
DATA2 12
SCOR 26
AN7
43
SO3
5
SI3
7
SENS 20
XLAT 16
CLOK 11
DATA 89
SO0
31
SC0
30
TMCK
8
SI0
29
R-CH
• SIGNAL PATH
: CD PLAY
• R-ch is omitted due to same as L-ch.
AMP-STBY
B
(Page 16)
(Page 16)
HCD-EH10
15
15
HCD-EH10
7-2. BLOCK DIAGRAM – TUNER Section –
FM MIX
AMP
Q803
FM/AM TUNER,
FM/AM PLL
IC801
RDS DECODER
IC861
36 FMRF-IN
8 FMIF-IN
22 MPX-IN
1 AMRF-IN
31 AM-OSC
33
SI1
56
V1
55
V0
57
V2
39
AN3
SYSTEM CONTROLLER
IC701 (2/3)
+4V
REGULATOR
Q862
VM +9V
RDS +4V
X801
75kHz
20
19
XIN
XOUT
16
DI
17
CL
15
CE
18
DO
25
AGC
1
CNP802
ANTENNA
FM/AM
3
BAND-PASS
FILTER
BPF801
AM
TRACKING
L851
AM-RF
AM VT
VOLTAGE
L852
AM-LO
D851
CF801
7 AMIF-IN
L803
AM-IFT
34 FMRF-OUT
FM
TRACKING
L804
FM-RF
32 FM-OSC
FM VT
VOLTAGE
L805
FM-LO
VM +9V
11 FM-DET
FM
DETECTOR
L806
FM-DET
3
FM-MIX
30
BO2
29
BO1
23
FMDET-OUT
12
L-OUT
13
R-OUT
R-CH
TUNER
5
AM-MIX
24
AMDET-OUT
CF802
CF803
10 TEST
4
FIN
DET AMP
Q861
27
TIN2
2
D0
45
INT3
16
CL
X861
4.332MHz
14
13
XIN
XOUT
C
• SIGNAL PATH
: AM
• R-ch is omitted due to same as L-ch.
: FM
(AEP, East European, Russian, UK)
(AEP, East European, Russian, UK)
US, Canadian, Australian, Singapore,
Taiwan, Argentina, Korean
(Page 16)
Ver. 1.5
HCD-EH10
16
16
HCD-EH10
7-3. BLOCK DIAGRAM – MAIN Section –
R-CH
+
INPUT SELECT,
ELECTRICAL VOLUME
IC401
28
REC1O
18
OUT1
13
SD
23 C1
21 B1
2 PB1P
19 A1
R-CH
CD
A
TUNER
• SIGNAL PATH
: CD PLAY
: TAPE PLAY
: REC
• R-ch is omitted due to same as L-ch.
: TUNER
J105
AUDIO IN
: AUX IN
J102
PHONES
SPEAKER
+
–
–
–
+
R
L
J101
BIAS OSC
L501
OSC
Q507
HR501
(REC/PB)
TAPE
MECHANISM
DECK
L-CH
SW501-1
SW501
(REC/PB)
PB
r
REC
R-CH
R-CH
POWER
AMP
IC301
4
P27
IC0
9
SYSTEM CONTROLLER
IC701 (3/3)
+
(AC IN)
F001
F002
POWER
TRANSFORMER
PT005
SYS +3.3V
D702
D191, 192
D112, 114
D372
AMP B+
+4V
REGULATOR
Q701 – 703
RECT
D107 – 110
B+ SWITCH
Q351, 352
AC DETECT
Q371, 372
AC DETECT
Q121, 122
VOLTAGE
DETECT
Q705, 706
+1.8V
REGULATOR
IC202
CD +1.8V
RECT
D111, 113
VSTBY
+9V
REGULATOR
Q101 – 103
VM +9V
+3.3V
REGULATOR
Q192
+3.3V
REGULATOR
Q191
CD D +3.3V
CD A +3.3V
VM +7V
+5V
REGULATOR
Q802
TUNER +5V
+3.1V
REGULATOR
Q801
TUNER +3.1V
AC DETECT
Q193
1
P24
42
AN6
36
AN0
54
RSTX
REMOTE CONTROL
RECEIVER
IC703
LED DRIVE
Q707
LED701
(LCD BACK LIGHT)
LED0
17
SC1
46
LED702
X701
32.768kHz
14
13
X1A
X0A
92
93
X702
4.19MHz
X1
X0
LCD702
LIQUID
CRYSTAL
DISPLAY
48 SI2
28 PPG1
ROTARY
ENCODER
SW700
VOLUME
STANDBY
SW701 – 705,
SW711 – 716
(FRONT PANEL KEYS)
SW750
(CD LID OPEN/CLOSE DETECT)
AN1, AN2, AN5
37, 38, 41
COM0 – COM1
59 – 62
SEG0 – SEG31
63, 64, 67 – 89, 94 – 100
RESET
SWITCH
Q704
C
AMP-STBY
B
SW501-2
40
AN4
DC
DETECT
Q123
(Singapore)
(EXCEPT Singapore)
VOLTAGE
SELECTOR
S901
(Singapore)
(EXCEPT Singapore)
(Page 14)
(Page 15)
(Page 14)
Ver. 1.3
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