Sony CMT-EX100 / HCD-EX100 Service Manual ▷ View online
13
HCD-EX100
Note:
1. CD Block is basically constructed to operate without adjustment.
1. CD Block is basically constructed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M
3. Use an oscilloscope with more than 10M
Ω 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.
checks.
S Curve Check
Procedure :
1. Connect the oscilloscope to test points TP (FE) and TP (VC).
2. Connect TP (FEI) and TP (VC) of the MAIN board with lead
1. Connect the oscilloscope to test points TP (FE) and TP (VC).
2. Connect TP (FEI) and TP (VC) of the MAIN board with lead
wires.
3. Press the
1/u button to turn the set ON.
4. Press the
^ button, load and eject the disc (YEDS-18) to
perform focus search.
5. Check the symmetry and peak to peak level of the oscilloscope
waveform (S curve) at this time.
S-curve waveform
6. After check, remove the lead wire connected in step 2.
Note: • Try to measure several times to make sure than the ratio of
Note: • Try to measure several times to make sure than the ratio of
A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the bright-
ness to obtain best waveform.
Checking Location : MAIN board
RF Level Check
Procedure :
1. Connect oscilloscope to test point TP (RF) and TP (VC) on MAIN
1. Connect oscilloscope to test point TP (RF) and TP (VC) on MAIN
board.
2. Press the
1/u button to turn the set ON.
3. Put disc (YEDS-18) in and playback No.5track.
4. Confirm that oscilloscope waveform is clear and check RF sig-
4. Confirm that oscilloscope waveform is clear and check RF sig-
nal level is correct or not.
oscilloscope
MAIN board
TP (FE)
TP (VC)
TP (VC)
+
–
–
symmetry
A
B
Within 3.8
± 1 Vp-p
oscilloscope
MAIN board
TP (RF)
TP (VC)
TP (VC)
+
–
–
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
level : 1.2
± 0.2 Vp-p
0V
Center of the waveform
B
Symmetry
A (DC voitage)
level : 1.3
± Vp-p
+0.6
–0.7
–0.7
oscilloscope
MAIN board
TP (TE)
TP (VC)
TP (VC)
+
–
–
Note: Clear RF signal waveform means that the shape “
◊” can be
clearly distinguished at the center of the waveform.
RF signal waveform
Checking Location : MAIN board
E-F Balance (1 Track Jump) check
Procedure:
1. Connect oscilloscope to test point TP (TE) and TP (VC) on MAIN
1. Connect oscilloscope to test point TP (TE) and TP (VC) on MAIN
board.
2. Press the
1/u button to turn the unit ON.
3. Put disc (YEDS-18) in and playback No.5track.
4. Press the
4. Press the
^ button, to pause.
5. Check the level (B) of the oscilloscope's waveform and the DC
voltage (A) of the center of the Traverse waveform.
Confirm the following:
Confirm the following:
• A/B x 100 = less then
± 22 (%)
• B = 1.3
±
Vp-p
1 track jump waveform
SECTION 4
ELECTRICAL ADJUSTMENT
+0.6
–0.7
–0.7
Checking Location : MAIN board
[ MAIN BOARD ] — SIDE A —
TP
(VC)
(VC)
TP
(FEI)
(FEI)
TP
(RF)
(RF)
TP
(FE)
(FE)
TP
(TE)
(TE)
IC303
IC301
14
HCD-EX100
SECTION 5
DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION
MAIN BOARD
AMP BOARD
REG BOARD
SW BOARD
POWER BOARD
PANEL BOARD
LED BOARD
EJECT BOARD
LOADING BOARD
HCD-EX100
15
15
• Indication of transistor
C
These are omitted
E
B
Q
C
These are omitted
E
B
IC303 #ª FE
1
2
3
4
WAVEFORMS
– MAIN (1/3) SECTION –
– MAIN (1/3) SECTION –
IC304 6 XTO
IC303 %º RF AC
IC303 $¡ TE
4.8Vp-p
16.9MHz
1.1Vp-p
(PLAY)
2.3V
APPROX 500mVp-p (PLAY)
2.3V
APPROX 200m Vp-p (PLAY)
5
6
IC7010XT2
IC701 7 XOUT
– MAIN (3/3) SECTION –
5MHz
5Vp-p
32.768kHz
5Vp-p
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in
• All capacitors are in
µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• 5 : fusible resistor.
• C : panel designation.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
•
• X : parts extracted from the component side.
•
®
: Through hole.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
(The other layers' patterns are not indicated.)
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages and waveforms are dc with respect to ground in
service mode.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : RADIO, CD STOP
( ) : CD PLAY
tion tolerances.
no mark : RADIO, CD STOP
( ) : CD PLAY
• Circled numbers refer to waveforms.
• Signal path.
J
: CD
c
: digital out
• Abbreviation
CND : Canadian model.
SP
SP
: Singapore model.
HK
: Hong Kong model.
KR
: Korea model.
CH
: Chinese model.
Note:
The components identi-
fied by mark
The components identi-
fied by mark
! or dotted
line with mark
! are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
! sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• Abbreviation
CND : Canadian model.
SP
SP
: Singapore model.
HK
: Hong Kong model.
KR
: Korea model.
CH
: Chinese model.
HCD-EX100
16
16
A
AMP
SECTION
B
AMP
SECTION
: FM
: CD
• Signal Path
• RCH is omitted
: DIGITAL OUT
TUNER PACK
7
FM_DET_OUT
4
R_OUT
6
L_OUT
1
STREO
2
TUNED
3
MUTING
12
DO
DI
13
CL
14
15
CE
ST
CL
DI
TUN
MUT
DO
CE
MUX
4
XO
14
XI
13
2
DATA
16
INT
RDS DECODER
IC451
X601
4.332MHz
CKO
4
XTI
5
XTO
6
27
CLOK
16
LOUT
26
DATA
D/A CONVERTER
IC304
28
MLAT
X361
16.9344MHz
RDS_DATA
17
RDS_CLK
14
PLL_CE
2
ST_MUTE
46
STEREO
100
TUNED
1
PLL_CLK
5
PLL_DATAO
4
PLL_DATAI
3
MASTER CONTROL
IC701(1/2)
DO
MUT
ST
TUN
CL
CE
DI
OPTICAL PICK-UP
BLOCK
KSM-770ACA
A
B
C
D
E
F
LD
VC
A+5V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
Q301
RF AMP
IC301
VC
12
A
5
B
6
C
7
D
8
E
11
F
10
LD
3
PD
4
IC302
MOTOR DRIVER
CH1
OUT R
OUT R
13
CH1
OUT F
OUT F
14
CH2
OUT R
OUT R
11
CH2
OUT F
OUT F
12
CH3
OUT R
OUT R
18
CH3
OUT F
OUT F
17
M
SLED
MOTOR
CH4
OUT R
OUT R
16
CH4
OUT F
OUT F
15
M
SPINDLE
MOTOR
F+
F-
T-
T+
SD-
SD+
SP-
SP+
3
CH1
R IN
2
CH1
F IN
6
CH2
R IN
5
CH2
F IN
23
CH3
R IN
24
CH3
F IN
25
CH4
S IN
S IN
20
MUTE
MDP
25
SRDR
29
SFDR
30
TFDR
31
TRDR
32
FFDR
33
FRDR
34
DIGITAL SIGNAL PROCESSOR
D/A CONVERTER
IC303
DIGITAL SERVO
64
D OUT
MNT0
MNT1
MNT2
MNT3
RFAC
50
17
RFI
16
RFO
14
FE
13
TE
22
LD ON
21
HOLD SW
RFDC
43
FE
39
TE
41
SE
40
XUGF
11
XPCK
12
GFS
13
C2PO
14
71
XTAI
BCLK
3
67
BCLK
DATA
2
66
PCMD
LRCK
1
65
LRCK
DIGITAL
OUT
OPTICAL
CD
DIGITAL OUT
OPTICAL
IC391
4
DATA
CD-L
CD-R
13
ROUT
R-CH
TU-L
TU-R
R-CH
6
CLOK
5
XLAT
77
SQCK
8
SCLK
76
SQSO
15
SCOR
26
SSTP
2
XRST
LIMIT
IN SW
39
SCLK
RIN
FIN
OUT1
OUT2
CD DAT
31 DA LAT
24
XLAT
32
SERVO_CK
21
SUB_Q
19
SCOR
16
XRST
23
LPH
32
LDON
33
35
OPEN_SW
34
CLOSE_SW
41
OPEN
OPEN/CLOSE
S351
42
CLOSE
9
7
4
2
M
IC351
M+7V
MOTOR DRIVER
M351
LOADING
MOTOR
26
CD_POWER
7
SENS
SENSE
18
RDS
BUFFER
Q401
SWITCH
Q781,782
CN303
CHECK
CONNECTOR
5
4
3
2
+7V
CD+7V
5-2. BLOCK DIAGRAMS – TUNER/CD SECTION –
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