Sony CDX-GT24 / CDX-GT28 Service Manual ▷ View online
CDX-GT24/GT28
13
3-9. SLED MOTOR ASSY
sled motor assy
sled motor assy
spring
spring
stand
stand
turn table
three serration screws
(M
(M
2
× 3)
three serration screws
(M
2
× 3)
bearing (F)
bearing (R)
Note: Place the stand with care not to touch the turn table.
Note:
Never remove these parts since they were adjusted.
Never remove these parts since they were adjusted.
Note for Assembly
Note: Take care to prevent the chassis from being bent
when tightening the three machine screws.
CDX-GT24/GT28
14
3-10. OPTICAL PICK-UP SECTION
3-11. OPTICAL PICK-UP
optical pick-up section
Note: Be careful not to touch the lens and hologram
terminal when removing the optical pick-up section.
There is space at the end of the
leaf spring (sub guide) to avoid
contact with the slide.
leaf spring (sub guide) to avoid
contact with the slide.
tapping screw
(P1.4)
(P1.4)
leaf spring (sub guide)
leaf spring (OP)
optical pick-up
lead screw assy
Notes for Assembly
Prevent the end of the
leaf spring (sub guide) from being
in contact with the OP slide base.
leaf spring (sub guide) from being
in contact with the OP slide base.
Prevent the end of the
leaf spring (sub guide) from being
in contact with the OP slide base.
leaf spring (sub guide) from being
in contact with the OP slide base.
CDX-GT24/GT28
CDX-GT24/GT28
15
15
4-1. BLOCK DIAGRAM – MAIN Section –
SECTION 4
DIAGRAMS
11
15
15
22
24
26
16
24
26
16
5
7
7
6
21
27
27
9
25
18
19
18
19
8
AU_LCH
AU_RCH
AU_RCH
UNI_SO
UNI_SI
UNI_CLK
Z_MUTE
CD_ON
CDM_ON
UNI_SI
UNI_CLK
Z_MUTE
CD_ON
CDM_ON
SYS_RST
EJECT_OK
BUS_ON
EJECT_OK
BUS_ON
BU+3.3V
A_ATT
BU_IN
D_+3.3V
A_+3.3V
BU_+3.3V
DR_+6V
BU_IN
D_+3.3V
A_+3.3V
BU_+3.3V
DR_+6V
R-CH
R-CH
R-CH
R-CH
R-CH
SERVO +3.3V
BU_+3.3V
R-CH
9 AUX-L
7 AUX-R
7 AUX-R
UNISO
5
UNISI
6
UNISCK
7
Z-MUTE
21
CD_ON
52
CDM_ON
20
RESET
12
SYSRST
43
BUSON
BU +3.3V
44
VOUT
1
VDD 2
1,2
D512
D510
4 FMIN1
3 FMIN2
3 FMIN2
4 TU-L
8 AUX-GND
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
PHASE LOCKED LOOP
(PLL)
IC1
L6
FM MIX
L2
CNP301
CD
MECHANISM
UNIT
(MG-101L)
I2C BUS CONTROLLED POWER AMP
/MULTIPLE VOLTAGE REGULATOR
IC750
SYSTEM CONTROL
IC501 (1/2)
RESET
IC602
CN601
3 TU-R
6 CD-LCH
5 CD-RCH
5 CD-RCH
R-CH (FRONT)
R-CH (REAR)
R-CH (REAR)
BATT
R-CH
8
9
9
18
SCL
19
SDA
14
13
RSSI
93 VSM
18 DAVN
87 RDS_ON
16 XTAL1
15 XTAL2
HPXOUT
LOUT
ROUT
J901
(AUX)
X1
4MHz
5
3
3
OUT-FL+
OUT-FL–
OUT-FL–
9
7
7
OUT-RL+
OUT-RL–
OUT-RL–
27
R-CH
ANT-REM
35
VP
BATT
20
VP1
6
VP2
30
AUDIO+B
31
33
33
SERVO+3.3V
MECHA+6V
34
PANEL+B
26
24
24
OUT-FR
28
MUTE
OUT-RR
4 SCL
AUDIO +8.5V
SERVO+3.3V
MECHA+6V
PANEL+B
SERVO+3.3V
MECHA+6V
PANEL+B
2 SDA
16 BEEP
22 STB
25 DIAG
22 STB
25 DIAG
7
10
12
11
16
1
9
9
2
4
3
6
29
30
30
SCL
SDA
I2C-SCL
I2C-SDA
I2C-SDA
I2C-SCL
I2C-SDA
I2C-SDA
I2C-SCL
I2C-SDA
I2C-SDA
I2C-SCL
I2C-SDA
I2C-SDA
29
I2C_SCK
59
VOLATT
30
I2C_SIO
56
ATT
28
BEEP
58
AMPSTB
57
DIAG
19
BUIN
12 IN-FL
FL+
FL–
FL–
RL+
RL–
RL–
FR+
FR–
RR+
RR–
FR–
RR+
RR–
ANT-REM
BATT
ACC
25
OUT-FL
11 IN-RL
23
OUT-RL
MUTE
Q441
MUTE
CONTROL SWITCH
Q478,479
55
ACC IN
ACCESSORY CHECK
Q631
BU+3.3V REG
IC681
1 AMRFIN
D479
D511
FU601
15
TEST
53
TEST IN
37
BU+B
B.U+5V
MUTE
Q461
BU+3.3V
BATT
OVER VOLTAGE
CHECK
Q580-582,D580,D581
BU+3.3V
RDS DEMODULATOR
IC51
11
SCL
12
SDA
15
INTN
1
VDDA
7
VDDB
10 XTO
9 XTI
X51
8.664MHz
I2C-SCL
I2C-SDA
I2C-SDA
16 MPX
MECHA +6V
A_8.5V
14
AUDIO +8.5V
B.U +5V
RDS+3.3V
SWITCH
Q51,52
• Signal Path
• R-CH is omitted due to same as L-CH.
: MW/LW
: CD
: FM
: AUX
CDX-GT24/GT28
CDX-GT24/GT28
16
16
•
A : B+ Line.
•
B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• no mark : FM
( ) : MW/LW
< > : CD PLAY
• Voltages are taken with VOM (Input impedance 10 M
( ) : MW/LW
< > : CD PLAY
• Voltages are taken with 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.
J :
CD
F :
FM
f :
MW/LW
L :
AUX
For schematic diagrams:
Note:
Note:
• All capacitors are in
μF unless otherwise noted. (p: pF)
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
specifi ed.
•
f :
internal
component.
•
C : panel designation.
4-2. BLOCK DIAGRAM – DISPLAY Section –
For Printed Wiring Boards.
Note:
•
•
X : Parts extracted from the component side.
•
a :
Through
hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
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.
• Waveforms
– MAIN Board –
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.)
• Indication of transistor.
C
B
These are omitted.
E
Q
X502
32.768kHz
10
11
94
1
2
2
100
95
SYSTEM CONTROL
IC501 (2/2)
LCD DRIVE
IC901
KEYIN1
CL
CE
CE
LCD_SO
LCD_CKO
LCD_CE
DIMMER
KEYIN0
92 KEYACK1
82 RE-IN0
RE-0
RE-1
RE-1
81 RE-IN1
XOUT
XIN
X501
11.06MHz
15
13 OSCOUT
3 NOSE_SW
OSCIN
47
48
46
2
COM1
I
COM4
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
3
I
34
•
39
35
|
38
S1
I
S33
DI
DIMMER
SWITCH
Q931
LED931
PANEL+B
(
)
KEY MATRIX
LSW901–911,
S901–904
(VOLUME)
PUSH SELECT
RE901
ROTARY
ENCODER
BACK LIGHT
1
LCD
BACK LIGHT
SWITCH
Q932
LCD BACK
LIGHT
(
)
LED941,942,944,945
LSW901–911
KEY
ILLUMINATE
0.04 Vp-p
4MHz
0.8 Vp-p
32.768 kHz
0.05 V/DIV, 0.5
μ sec/DIV
0.5 V/DIV, 20
μsec/DIV
IC1
RI (XTAL1)
IC501
(XIN)
1.8Vp-p
11.06MHz
0.5 V/DIV, 0.1
μsec/DIV
IC501
RH (OSCIN)
Note: The components identifi ed by mark
0 or dotted
line with mark
0 are critical for safety.
Replace only with part number specifi ed.
Click on the first or last page to see other CDX-GT24 / CDX-GT28 service manuals if exist.