Sony CDX-T68X Service Manual ▷ View online
CDX-T68X
18
18
RESET
SWITCH
8
DATA
CLK
BUSON
RST
6
5
4
7
B. UP
CN902 (2/2)
37
MCK
36
EHS
34
AVRH
ELVON
RV302
ELEVATOR HEIGHT
(ADDRESS)
RV301
ELEVATOR HEIGHT
SENSOR
24
+8V
REGULATOR
IC202
DRIVER +8V
BUCHK 46
BATTERY
CHECK
Q203
D210
D209
75
CDON 23
EJECT SW 50
µ
COM B+
BUS INTERFACE
(FOR SONY BUS)
IC201
+5V
REGULATOR
IC203
DAC/SERVO +5V
Z
SW303
MAGLK SW
4
ELVF
3
ELVR
SW301
MAGAZINE
DETECT
3
4
9
7
MOTOR
DRIVE
IN1
IN2
OUT1
OUT2
ELEVATOR
MOTOR DRIVE
IC302
M
M104
(ELEVATOR)
SYSTEM CONTROLLER
IC301 (2/2)
RESET
10
6
9
11
4
1
12
13
2
8
7
SO
SI
SCK
BUSON OUT
BUSON OUT
RESET
DATA
14
CLK
LOF
BUSON IN
RST
16
17
18
45
81
UNI SI
UNI SO
UNI CK
BUSON
VCC
RESET SIGNAL
GENERATOR
IC204
IC901
32
28
EEDAT
EECLK
5
6
SDA
SCL
EEPROM
IC303
+3V
REGULATOR
Q204
SERVO +3V
X1
80
X0
X301
4MHz
95 MAG SW
SW302
MAGAZINE IN/OUT
DETECT
REGULATOR
Q201, 205
51
5-2.
BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
CDX-T68X
19
19
1.4
+ 0.3
Vp-p
– 0.4
Approx
180 mVp-p
180 mVp-p
Approx
900 mVp-p
900 mVp-p
4.1 Vp-p
59.1 ns
2 Vp-p
3.8
µ
s
4 Vp-p
250 ns
5-3.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from CD changer controller.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
no mark : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD PLAY
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
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
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
• Waveforms
– RF Board –
– RF Board –
1
IC101
qg
(RFAC) (CD play mode)
2
IC101
qh
(FE) (CD play mode)
3
IC101
qk
(TE) (CD play mode)
– MAIN Board –
1
IC301
ia
(X1) (CD play mode)
2
IC401
rd
(MDP) (CD play mode)
5
IC401
od
(XTAI) (CD play mode)
3
IC401
ih
(LRCK) (CD play mode)
4.2 Vp-p
22.7
µ
s
4
IC401
o;
(BCK) (CD play mode)
4.3 Vp-p
472 ns
6
IC501
qd
(MCK) (CD play mode)
4.9 Vp-p
59.1 ns
7
IC501
qh
(XO) (CD play mode)
5.4 Vp-p
59.1 ns
8
IC501
wd
(BCK) (CD play mode)
6.3 Vp-p
472 ns
9
IC501
wf
(LRCK) (CD play mode)
6 Vp-p
22.7
µ
s
CDX-T68X
20
20
CN102
Q101
Q102
IC201
IC101
CN101
R215
C209
R216
R218
R201
C217
R202
R222
R223
R127
R103
R111
R110
C112
R113
R112
R116
R119
C111
R128
R118
C113
R117
C116
R109
R106
C114
C119
R120
R121
R212
R220
R211
C204
R205
R203
C203
R204
R206
R210
R208
R209
R207
C206
C205
C208
R214 R213
R219
C211
C108
C107
C115
C110
SW102
C117
C109
C202
C201
C220
A
MAIN
FLEXIBLE
BOARD
MAIN
BOARD
CN202
(CHASSIS)
1-680-829-
11
(11)
RED
BLK
M
M101
(SLED)
16
1
OPTICAL
PICK-UP
BLOCK
KSS-720A
OP FLEXIBLE
BOARD
RED
BLK
M
M103
(CHUCKING)
RED
BLK
M
M102
(SPINDLE)
TP
(TE)
TP
(RFAC)
TP
(VC)
RF BOARD
(COMPONENT SIDE)
SW101
(LIMIT)
SW102
(CHUCKING END DETECT)
1-680-829-
11
(11)
RF BOARD
(CONDUCTOR SIDE)
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
5-4.
PRINTED WIRING BOARDS – RF Board –
• Semiconductor
Location
Ref. No.
Location
IC101
C-5
IC201
F-6
Q101
D-6
Q102
E-5
(Page 22)
Ver 1.1
CDX-T68X
21
21
5-5.
SCHEMATIC DIAGRAM – RF Board –
•
See page 19 for Waveforms.
•
See page 27 for IC Block Diagrams.
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que
par une pièce portant le numéro spécifié.
R210
R209
C206
CN102
R127
C107
C117
C109
C108
TP1
TP2
TP3
TP4
TP6
TP5
C112
R121
R120
C114
C115
C119
IC201
C202
C201
R201
R106
R117
R109
R110
R112
C111
R119
R118
C116
C113
R116
R111
R202
C217
C203
R203
R204
R206
R205
C204
C205
R207
R208
R212
R220
R211
C208
R213
R214
C211
C209
R215
R218
R219
R216
R222
R223
SW101
SW102
CN101
IC101
Q102
C110
R128
TP(RFAC)
TP(VC)
TP(TE)
M101
M102
M103
R113
R103
Q101
33k
10k
470p
16P
22
100
4V
0.1
0.1
100
4V
0.1
22k
22k
0.1
100
4V
0.1
LA6576L-TE
0.1
470
16V
16V
10k
100k
3.3k
100k
18k
10k
0.1
1k
22k
0.1
0.1
100k
10k
10k
0.1
470p
10k
33k
33k
10k
470p
470p
10k
33k
68k
12k
47k
0.022
47k
56k
0.022
0.022
10k
10k
33k
33k
1k
820
22P
CXA2581N-T4
DTC124EKA
-T146
100
6.3V
1k
15k
22
2SB624T1-BV345
AA1
AA2
AA3
AA4
AA5
AA6
AA7
AA1
AA2
AA3
AA4
AA5
AA6
AA7
FWD
REV
S-GND
VREF-IN
VREF-OUT
VIN1-SW
REG-OUT
VL0-
VL0+
VIN1-A
VIN1+A
VIN1-B
VIN1+B
VIN2+
VIN2-
VIN2
VIN3
VIN3-
VIN3+
REG-IN
VIN4+
VIN4-
VIN4
MUTE2
MUTE1
VIN1
VO4+
VCC2
VCC1
VO4-
VO3+
VO3-
VO2+
VO2-
VO1+
VO1-
E
F
VCC
VC
VR
PD
LD
GND
A
D
T(-)
T(+)
F(-)
F(+)
B
C
8V
GND(8V)
SFDR
SRDR
MDP
TFDR
TRDR
FFDR
FRDR
5V
GND(5V)
DVCC(3V)
FE
TE
VC
RFDC
RFAC
SAVE_SW
LIM_SW
R/RW_SEL
LD
PD
AC_SUM
GND
A
B
C
D
E
F
SW
DVCC
DVC
RFAC
FE
FEI
TE
TE_BAL
CE
CEI
VCC
RFG
BST
VFC
RFC
VC
RFDCO
RFDCI
LOADF
LOADR
OFST
DC_
IN
EQ_
I-V
AMP
PD
LD
16
1
(FOCUS)
(TRACKING)
2-AXIS
DEVICE
LASER DIODE
DETECTOR
VCC
VC
FLEXIBLE
BOARD
OP
POWER CONTROL
AUTOMATIC
RF AMP,
FOCUS/TRACKING
ERROR AMP
RF AMP OFFSET
CONTROL SWITCH
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED/CHUCKING
MOTOR DRIVE
FLEXIBLE
BOARD
MAIN
ON:WHEN COMPLETION OF THE DISC
SW101
(LIMIT)
SW102
ON:WHEN THE OPTICAL PICK-UP IS
INNER POSITION
(CHUCKING)
(SPINDLE)
(SLED)
(CHUCKING END DETECT)
CHUCKING OPERATION
C220
0.1
(Page 25)
Ver 1.1
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