Read Sony CX-LDB30 / CX-LDB50 / XR-DB30 / XR-DB50 Service Manual online
26
26
CX-LDB30/LDB50
CX-LDB30/LDB50
7-2. BLOCK DIAGRAM — MAIN SECTION —
: TUNER
: CD
• Signal Path
• R-CH is omitted due to same as L-CH
: AUX
: PB (TAPE)
: REC (TAPE)
BIAS
OSC
+VL
ERASE
HEAD
REC/PB
HEAD
DECK BLOCK
27
22
SYSTEM CONTROLLER
IC901 (2/2)
25
J201
SPEAKER
R CH
RY201
L
R
FUCTION
KEY
S511-516,929
TUNER PACK
L-CH
L-CH
R-CH
R-CH
R-CH
D OUT
D IN
CLK
CE
TUNED
R-CH
26
REC/PB
SWITCH
Q305,307,309
L301
BIAS OSC
Q313
T SOL
DRIVE
DRIVE
Q903,905
MOTOR
DRIVE
Q902,904
43
89
23
FUCTION
KEY
S504-510,936
95
VOL
ENCODER
S501
88
100
97
+9V
J291
AUDIO IN
FUNCTION
IC601
POWER AMP
IC401
33
28
35
2
31
27
R-CH
7
79
STEREO
TUMUT
80
R-CH
R OUT
R-CH
L OUT
51
54
94
53
R-CH
J292
PHONES
LCD
LCD501
POWER
CONTROL
Q105
+Vcc
IC102
1
2
65
MECHA BLOCK
PLAY
REC
PACK
END
DECK
MOTOR
Q310
BIAS
SWITCH
Q311, 312
+7V
44
M
40
18
50
19
8
6
9
MUTE
CONT
CONT
Q407
55
39
42
OVERLOAD
DET
Q403
TH401
PROTECT
DET
Q108-110
FAN
DRIVE
Q112-115
VM
R-CH
R-CH
2
40
46
FR VDD
+VM
BASS
ENCODER
S502
91
TREBLE
ENCODER
S503
90
D504
STAND BY
D505
XR-DB50 ONLY
VOLUME
10
11
X901
32.768kHz
15
13
X902
16MHz
+VP
VP
SWITCH
Q201,203,205
-VP
SWITCH
Q202,204,206
-VL
+VL
D101
D102
VCC
REG
REG
Q106
VDD
REG
REG
Q102,103
3.3V
REG
REG
Q104
122
D120-
+VH
-VH
+VL
-VL
VM
TU9V
CD 7V
FR VDD
D VDD(3.3V)
A VDD(3.3V)
MP3VD
D110
D111
D112
D114
D115
-VP
38
IC501
4
3
1
RESET
SWITCH
SWITCH
Q901
Q906
12
IC904
1
3
20
V STBY
D905-1
µCON +B
D905-2
IC902
1
4
CD SECTION
O-CD ON
O POWER
I-RMC
RESET
AC-CUT
O-PLLCLK
O-PLLCE
I-PLLDATA
I-TUNE
O-PB2
I-HALF SW
O-PLLDATA
59
I_AUDIO IN
I-KEY1
I-ENC0
O-ST LED
I-KEY0
74
I-WAKEUP
I-STEREO
O-TUMUT
58
I-RDSDAT
18
I-RDSCLK
I-PLAY SW
O-MOTOR
I-END SW
O-SOL
O-BIAS
FUNC CLK
O-MUTE
I-PROTECT
O-SP-ON
O-LCD SCK
1
O-LCDAT
O-LCD-RS
O-LCD CD
52
O-LCDCS
I-ENC1
I-ENC2
LED
DRIVE
Q503
28
O-BKLIGHT
32kHz-IN
32kHz-OUT
16MHz-IN
16MHz-OUT
AUX-L
OUT-L
TUNER-L
PBP-L
CD L
OUT-R
PBOR
PBOL
RECOUT-L
SI
SC
VOL INR
VOL IN L
7V
REG
REG
REMOTE
CONTROL
RECEIVER
RESET
VDD
REG
REG
A
D502, 503
(BACK LIGHT)
D113
AEP, RU
E51,AUS,KR
RDSDATA
RDSINT
AEP ONLY
LED
DRIVE
Q502
3
O-VOLUME LED
D908
11 IN-CH1
13
ST-BY
5
OUT-CH1
THERMAL
DET
Q406
R-CH
ON
DET
Q111
PROTECT
DET
Q208
DC
DET
R-CH
SWITCH
Q207
41
I-HP
IC101
1
2
12V
REG
REG
D004-007
RELAY
DRIVE
PT003
POWER TRANSFORMER
(SUB)
Q101
120V
S001
230-240V
220V
PT002
POWER TRANSFORMER
6
5
2
5
3
4
6
2
1
8
6
3
3
4
4
7
12
16
13
15
RY002
VOLTAGE
SELECTOR
PT001
POWER TRANSFORMER
PT004
POWER TRANSFORMER (SUB)
12
16
6
2
7
13
15
RY001
6
8
1
4
AC
IN
AC
IN
D002
Ver. 1.2
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