Sony HCD-HX9 Service Manual ▷ View online
13
HCD-HX9
CD SERVICE MODE
This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the optical pick-up.
Procedure:
instance, when cleaning the optical pick-up.
Procedure:
1. Press the
I/
1
button to turn the power on.
2. Press the [FUNCTION] button to select “CD”.
3. Press three buttons of [SEARCH],
3. Press three buttons of [SEARCH],
+ and
Z
simultaneously,
the message “SERVICE MODE” is displayed on the
fluorescent indicator tube.
fluorescent indicator tube.
4. Press the
– button to move the optical pick-up to inside
track and the message “SLED IN” is displayed on the
fluorescent indicator tube, or press the
fluorescent indicator tube, or press the
+ button to outside
track and the message “SLED OUT” is displayed on the
fluorescent indicator tube.
fluorescent indicator tube.
5. Press the [DSGX] button, “LD ON” or “LD OFF” is displayed
on the fluorescent indicator tube. Each time [DSGX] button is
pressed, laser diode on/off is changed over.
pressed, laser diode on/off is changed over.
6. To release this mode, press the
I/
1
button.
14
HCD-HX9
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.
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 TP121 (RFI) and TP124 (VC) on the
CD board.
2. Press the
I/
1
button to turn the power on, and press
the
Z
button to open the 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.
Checking Location:
+
–
–
CD board
TP121 (RFI)
TP124 (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
SECTION 5
ELECTRICAL CHECKS
TUNER SECTION
FM TUNE LEVEL CHECK
Procedure:
1. Turn on the set.
2. Input the following signal from signal generator to FM antenna
2. Input the following signal from signal generator to FM antenna
input directly.
Carrier frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation
: 75 kHz
Modulation
: 1 kHz
ANT input
: 35 dBu (EMF)
Note:
Use 75 ohm coaxial cable to connect signal generator and the set.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Confirm “TUNED” is lit on the display for A, B and C signals.
4. Confirm “TUNED” is lit on the display for A, B and C signals.
When the selected station signal is received in good condition,
“TUNED” is displayed.
“TUNED” is displayed.
signal
generator
set
TP124
(VC)
– CD Board (Conductor Side) –
TP121
(RFI)
IC101
HCD-HX9
15
15
HCD-HX9
SECTION 6
DIAGRAMS
SYSTEM CONTROLLER
IC301 (1/4)
CD-MP3 PROCESSOR
IC101
MUTE
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
95
89
A
AVDD
+3.3V
+3.3V
DETECTOR
FNi1 (A)
RFo
97 FPi1 (B)
88
2
AGCi
3
RFRP
RFZI
7
6
TEi
TEZi
83
RFEQo
81 RFi
82 RFRPi
30
LO
27
RO
65
AIN (PI4)
66
BCKi (PI5)
BCK
A-IN
BUS1
BUS0
BUS2
BUS3
BUCK
67
LRCKi (PI6)
LRCK
51
PIO3
GATE
46
AoUT3 (PO4)
ST-REQ
38
BUS0
R-CH
94 FNi2 (C)
96 FPi2 (D)
100 TNi (E)
98 TPi (F)
91 LDo
92
MDi
2 VO1+
1 VO1–
13 DMo
AUTOMATIC
POWER CONTROL
Q301
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSM-213DCP)
B
C
D
E
F
12 FMo
10 TRo
9 FOo
20 IO0 (/HSO)
I-V AMP
M401
(SPINDLE)
M402
(SLED)
12 VO2–
11 VO2+
18 VO3+
17 VO3–
26 VO4+
27
7
IN4’ 24
IN3’ 20
IN2’ 9
IN1 3
BIAS 23
84 VRo
VO4–
M
M
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE MOTOR DRIVE
IC401
S201
(LIMIT)
DVDD
+3.3V
+3.3V
24
XO
23
XI
X102
16.9344MHz
22 CD DRIVE MUTE
LOADING
MOTOR DRIVE
IC320
CDM LOAD IN 49
CDM LOAD OUT
CDM OPEN SW
CDM CLOSE SW
48
50
51
M
A
CD-L
B
A-IN, BCK, LRCK,
GATE, ST-REQ
C
BUS0 – BUS3,
BUCK, CCE, REQ
: CD PLAY
SIGNAL PATH
R-ch is omitted due to same as L-ch.
: USB
VCC
A
B
C
D
E
F
LD
PD
SP+
VC
SP–
SL+
SL–
T+
T–
F+
F–
1
2
3 CD BUS0
13
39
BUS1
4
3
2 CD BUS1
5
40
BUS2 (SO)
8
9
1 CD BUS2
23 CD CLK
6
41
BUS3 (SI)
11
10
100 CD BUS3
12
DATA BUS SWITCH
IC311
1
2
13
4
3
5
8
9
6
11
10
12
DATA BUS SWITCH
IC312
SIGNAL SELECTOR
IC313
A/B
Q321
42
BUCK (CLK)
4
2
3
CCE
24 CD CCE
43
XCCE
54
SBSY
48
PIO0
7
26 MP3 IREQ
6 DEC BUS SEL1
19 SBSY
37
XRST
25 CD XRST
5
REQ
6
12
14
13
9
10
11
1
S001
DISC TRAY
OPEN/CLOSE DETECT
OPEN
CLOSE
M001
(LOADING)
6-1. BLOCK DIAGRAM – CD SERVO Section –
(Page 16)
(Page 17)
(Page 17)
HCD-HX9
16
16
HCD-HX9
AUDIO IN
R-CH
J981
CD-L
A
6
8
5
4
10
A
9
B
SEL A
57
SEL B
58
22
DATA
21
CLK
AMP DATA
55
AMP CLOCK
56
TA LINE-MUTE
54
HP MUTE
52
HP DET
68
AUDIO IN DET
69
BT_DOUT/DAB TXD
31
BT_DIN/DAB RXD
32
D
L-CH
X
LOUT
INPUT SELECTOR, ELECTRICAL VOLUME,
SURROUND/TONE CONTROL
IC304
SYSTEM CONTROLLER
IC301 (2/4)
: AUDIO
: TUNER (DAB)
SIGNAL PATH
R-ch is omitted due to same as L-ch.
: CD PLAY
: AUDIO IN
: TUNER (FM/AM)
PHONES
R-CH
J982
6
INH
SEL INH
59
Q309
Q308
Q311
INPUT SELECTOR
IC303
13
X1
X0
INL3
IGOUTL
VOLINL
INL2
INL1
9
MUTING
IC315
R-CH
27
MUTING
CONTROL SWITCH
Q303, 304
MUTING
IC316
R-CH
MUTING
CONTROL SWITCH
Q306, 307
HEADPHONE
AMP
IC317
TUNER (FM/AM)
AM
FM ANT
AM ANT
L OUT
R OUT
DO/STEREO
R-CH
RDS DATA
RDS CLK
ST DIN
ST CLK
ST CE
FM75
Ω
COAXIAL
ANTENNA
DAB TUNER MODULE
DAB ANT
AUDIO_
LEFT_ OUT
AUDIO_
RIGHT_ OUT
S1_DOUT
R-CH
S1_DIN
DAB 75
Ω
ANTENNA
RDS INT
18
RDS DATA
86
ST CE
87
ST CLK
89
ST DATA OUT
90
ST DATA IN/STEREO
88
12
14
LOW-PASS
FILTER
IC803
6-2. BLOCK DIAGRAM – MAIN Section –
(Page 15)
(Page 17)
Click on the first or last page to see other HCD-HX9 service manuals if exist.