Sony CMT-GS10 / CMT-GS30DAB / HCD-GS10 / HCD-GS30DAB Service Manual ▷ View online
17
HCD-GS10/GS30DAB
Checking Location:
+
–
–
BD90 board
TP (RFI)
TP (VC)
TP (VC)
oscilloscope
(DC range)
Procedure :
1. Connect oscilloscope to TP (RFI) and TP (VC) on the BD90
board.
2. Press the
I/
1 button to turn the power ON, and press
the Z (CD) button to open the CD disc tray.
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 (
A good eye pattern means that the diamond shape (
◊
) in the
center of the waveform can be clearly distinguished.
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
TIME/DIV: 500 ns
level:
1.2
1.2
±
0.3 Vp-p
TP
(VC)
TP
(RFI)
IC101
– BD90 Board (Side B) –
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 M
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.
5.
Check the focus bias check when optical pick-up block is replaced.
FOCUS BIAS CHECK
SECTION 5
ELECTRICAL ADJUSTMENTS
TUNER SECTION
0 dB=1
µ
V
(Except UK)
[AM]
Setting:
FUNCTION: TUNER
TUNER/BAND button: AM
FUNCTION: TUNER
TUNER/BAND button: AM
[FM]
Setting:
FUNCTION: TUNER
TUNER/BAND button: FM
FUNCTION: TUNER
TUNER/BAND button: FM
•
Repeat the procedures in each adjustment several times.
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: 54 dBuV
60 cm
set
loop antenna A loop antenna B
+
–
–
level meter
32
Ω
HP board
PHONES jack (J102)
PHONES jack (J102)
MAIN board
ANTENNA
CN802 pin
2
,
3
FM RF signal
generator
75kHz frequency
deviation by 1 kHz
signal
Output level: as low as possible
(8dBuV)
deviation by 1 kHz
signal
Output level: as low as possible
(8dBuV)
+
–
–
level meter
set
32
Ω
0.01
µ
F
HP board
PHONES jack (J102)
PHONES jack (J102)
MAIN board
ANTENNA
CN802 pin
1
MAIN board
ANTENNA
CN802 pin
2
digital voltmeter
100 k
Ω
MAIN board
TP (TUNER–VT)
TP (TUNER–GND)
Ver. 1.2
18
HCD-GS10/GS30DAB
Adjustment Location and Connecting Points
L851
(TUNER–VT)
TP(TUNER–VT)
(TUNER–GND)
TP(TUNER–GND)
FM FREQUENCY
COVERAGE
ADJUSTMENT
FM TRACKING
ADJUSTMENT
AM TRACKING
ADJUSTMENT
FM DETECTOR
ADJUSTMENT
CN802
– MAIN BOARD (Conductor side) –
– MAIN BOARD (Component side) –
1
3
L804
L805
L803
L806
IC801 pin
qs
(TUNER OUT L-ch)
[FM DETECTOR ADJUSTMENT]
Setting:
FUNCTION: TUNER
TUNER/BAND button: FM
FUNCTION: TUNER
TUNER/BAND button: FM
FM RF signal
generator
Carrier frequency: 98MHz
Modulation:
deviation by FM 75 kHz
Output level: 60 dBuV
Modulation:
deviation by FM 75 kHz
Output level: 60 dBuV
+
–
–
level meter
MAIN board
TP(TUNER–GND)
TP(TUNER–GND)
MAIN board
IC801 pin
IC801 pin
qs
(TUNER OUT L-ch)
set
MAIN board
ANTENNA
CN802 pin
ANTENNA
CN802 pin
2
MAIN board
ANTENNA
CN802 pin
ANTENNA
CN802 pin
1
1. Tune the set to 98 MHz.
2. Adjust L806 so that modulation distortion may become the
2. Adjust L806 so that modulation distortion may become the
best in the vicinity of the maximum value where the tuner out
level becomes –15dBuV or more.
level becomes –15dBuV or more.
AM FREQUENCY COVERAGE ADJUSTMENT
(Canadian)
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
530 kHz
1.6
±
0.3 V
Confirmation
1,710 kHz
7.0
±
0.5 V
AM FREQUENCY COVERAGE ADJUSTMENT
(EXCEPT Canadian)
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
531 kHz
1.6
±
0.3 V
Confirmation
1,602 kHz
6.7
±
0.5 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
620 kHz (Canadian) /
L851, L803
603 kHz (EXCEPT Canadian)
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L805
87.5 kHz
1.7
±
0.1 V
Confirmation
108 kHz
6.2
±
0.5 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L804
98 MHz
Adjustment Location: MAIN board.
Ver. 1.3
19
19
HCD-GS10/GS30DAB
HCD-GS10/GS30DAB
• Circuit Boards Location
• Waveforms
– BD90 Board –
– BD90 Board –
– PANEL Board ––
– MAIN Board –
1
IC801
w;
(XOUT)
13.3
µ
s
1.5 Vp-p
500 mV/DIV, 4
µ
s/DIV
1
IC701
qd
(X0A/P90)
30.5
µ
s
2.2 Vp-p
500 mV/DIV, 10
µ
s/DIV
2
IC701
od
(X0)
180 ns
3.3 Vp-p
1 V/DIV, 100 ns/DIV
1
IC101
ia
(RFI)
(CD PLAY mode)
1.3 Vp-p
200 mV/DIV, 500 ns/DIV
2
IC101
wf
(XO)
(CD PLAY mode)
59.1 ns
3.3 Vp-p
1 V/DIV, 20 ns/DIV
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F 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
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
•
H
: adjustment for repair.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
– BD90 BOARD –
No mark: CD PLAY
– Other Section –
No mark: FM
tolerances.
– BD90 BOARD –
No mark: CD PLAY
– Other Section –
No mark: FM
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM)
f
: TUNER (AM)
J
: CD
d
: AUX
: AUDIO
: AUDIO
• Abbreviation
AR
: Argentine model
CND
: Canadian model
E2
: 120V AC area in E model
E51
: Chilean and Peruvian models
MX
: Mexican model
RU
: Russian model
SP
: Singapore model
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
• Indication of transistor.
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.)
SECTION 6
DIAGRAMS
B
These are omitted.
C
E
Q
C
B
These are omitted.
E
Q
MAIN board
DAB board (UK)
REG board
PANEL board
HP board
AUX board
KEY board
BD90 board
PT board
AMP board
Ver. 1.3
Note:
The components identi-
fied by mark
fied by mark
0
or dot-
ted line with mark
0
are
critical for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés
par une marque
par une marque
0
sont cri-
tiques pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
20
20
HCD-GS10/GS30DAB
HCD-GS10/GS30DAB
6-1. BLOCK DIAGRAM — BD/DRIVER SECTION —
: CD
Signal Path
(OPEN)
(CLOSE)
A
MAIN
SECTION
(Page 22)
OPEN
CLOSE
M
OPTICAL PICK-UP
BLOCK
(KSM-213DCP)
AUTOMATIC
POWER
CONTROLLER
Q301
AVDD (+3.3V)
+1.7V
LD
GND
FOCUS
COIL
F+
F
T+
T
SP+
SP
SL+
SL
TRACKING
COIL
IC401
S201
(LIMIT)
X102
16.934MHz
DVDD (+3.3V)
+1.7V
SL/SP MOTOR
DRIVER
IC101
RF AMP,DSP,MP3
26
27
18
17
VR
PD
2
1
12
11
24
MUTE
IN4'
IN3'
IN1
IN2'
VO4+
VO4-
VO3+
VO3-
VO1+
VO1-
VO2-
VO2+
M
M
(SPINDLE)
(SLED)
VCC
VC
A
B
C
D
E
F
DETECTOR
FNI 1 (A)
FPI 1 (B)
FNI 2 (C)
FPI 2 (D)
TNI (E)
TPI (F)
100
98
LDo
91
MDI
92
FOo
9
IO0
20
27
RO
30
LO
24 XO
23 XI
95
97
94
96
L-OUT
R-OUT
20
TRo
10
3
DMO
13
BIAS
VREF
11
23
VRo
84
9
FMO
12
7
DVDD (3.3V)
+1.5V
IC201
SYSTEM CONTROLLER
IC701
(1/2)
5
1
3
+1.5V
REG
FOCUS/TRACKING
COIL DRIVER
VSTBY
CD MECHANISM DECK
BLOCK
FOCUS COIL
DRIVE
TRACKING COIL
DRIVE
SLED MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
15
16
12
11
7
8
5
6
4
1
3
2
10
13
14
9
9
PIO0
BUS0
BUS1
BUS2 (SO)
BUS3 (SI)
BUCK (CLK)
CCE
RST
SBSY
I-REQ
IO-BUS0
IO-BUS1
IO-BUS2
IO-BUS3
O-BUCK
O-CCEN
O-XRST
I-SBSY
O-MMUTE
REQ
BUS0
BUS1
BUS2
BUS3
BUCK
CCE
RST
SBSY
M-MUTE
48
38
39
40
41
42
43
37
54
3
5
6
7
8
17
18
19
43
4
IC601
2
4
9
7
CD
LOADING
MOTOR
DRIVE
I-TRYSW-OPEN 11
I-TRYSW-CLOSE 12
O-TRY-OPEN 20
O-TRY-CLOSE 21
DVDD (3.3V)
AVDD (3.3V)
VM (7V)
VM (7V)
M401
M402
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