Read Sony CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 Service Manual online
17
17
CX-LDB10/LDB20
CX-LDB10/LDB20
7-2. BLOCK DIAGRAM — MAIN SECTION —
AC
DETECT
Q003,004
R-CH
+
21
INPUT SELECT,
ELECTRICAL VOLUME
IC101
22
28
REC-O-L
18
OUT-L
13
CONT
21 CD-L
23 TUNER-L
2 TAPE-L
19 AUX-L
R-CH
J702
REC/PB
SWITCH
Q101,103,
252-254
CD
A
• Signal Path
: CD PLAY
: TAPE PLAY
: REC
• R-ch is omitted due to same as L-ch.
: TUNER
CD SERVO
Section
: AUX IN
J701
LDB10
PHONES
SPEAKER
IMPEDANCE
USE 6
Ω
+
–
–
–
+
R
L
J302
FM/AM TUNER PACK
TU LCH
TU RCH
TU CE
CE
R-CH
TUNED
TUNED
STEREO
STEREO
MUTE
TU-MUTING
TU DI
DO
TU DO
DI
TU CL
CLK
CE
TUNED
STEREO
DO
DI
CLK
RDS DATA
RDS DATA
RDS CLOCK
RDS CLOCK
BIAS OSC
T251
REC BIAS
SWITCH
Q256,257
B +10V
BIAS OSC
Q255
ERASE
HRPE
(REC/PB/ERASE)
TAPE MECHANISM
DECK BLOCK
L-CH
R-CH
R-CH
DC
DETECT
Q001,002,017
+
POWER
AMP
IC301
77
TU DI
75
TU CLOCK
73
TU CE
72
TU TUNED
71
TU STEREO
76
TU DO
RDS DATA
RDS CLOCK
80
TA RP
18
TA BIAS
RDS-DATA
RDS-CLK
TU MUTE
TU-MUTING
70
87
I-POWER_MONITOR
30
F-DATA
85
AMP MUTE
CAPSTAN/REEL
MOTOR DRIVE
Q404,405
PLUNGER
DRIVE
Q402,403
M M
(CAPSTAN/REEL)
(DECK-A)
SOL 9V
MOTOR 9V
PACK
R RFC
PLAY SW
END SW
TA PLAY SW
TA END SW
TA END SW
83
82
81
TA-SW
78 TA SOL
79 TA MO
RMC_IN
7
SYSTEM CONTROLLER
IC401 (2/2)
(EXCEPT SP2, SP6, E51)
(EXCEPT SP2, SP6, E51)
(SP2, SP6, E51)
FAN
FAN MOTOR
DRIVE
Q601,602
+
D002
M+PV
+3.6V
+3.6V
D602
–29V
REGULATOR
Q013-016
(AC IN)
SUB POWER
TRANSFORMER
T901
MAIN POWER
TRANSFORMER
T902
AC 3.6V
SYS +3.3V
SYS +3.3V
TO
FLUORESCENT
INDICATOR TUBE
FL –29V
RECT
D907-910
D408
D912
D911
RECT
RECT
-35V
D905
AMP B+
TO
POWER AMP
AMP B–
VOLTAGE
SELECTOR
S901
+10V
REGULATOR
IC003
VM +10V
+3.9V
REGULATOR
Q007-009
Q005
L : POWER ON
RECT
D903,904
RECT
D901,902
RECT
D914,916
+3.3V(MAIN)
AM
ANTENNA
AUDIO IN
FM ANT
AM ANT
ANT GND
ANT GND
FM 75
Ω
COAXIAL
VOLTAGE
DETECT
IC403
MAIN POWER
RELAY DRIVE
RELAY DRIVE
Q006
L : POWER ON
+3.3V
REGULATOR
D012,015
AEP
LDB20
+3.3V
REGULATOR
Q011,012
+10V
REGULATOR
Q020
M +7V
CD +3.3V
TU +10V
CD +1.5V
M+7V
REGULATOR
Q010
92
CD ON
86
POWER ON
20
I_POWER_DOWN
12
RESET
REMOTE CONTROL
RECEIVER
IC402
O-VOL LED
91
LED DRIVE
Q407
D410-415
VOLUME
ST-BY LED
88
LED DRIVE
Q408
D416
(STANDBY)
X401
32.768kHz
11
10
O-XT2
I-XT1
15
13
X402
16MHz
XOUT
XIN
FL401
FLUORESCENT
INDICATOR TUBE
S1 – 16
G1 – G12
31 – 42
43-51,
53-59
97 VOL_ENCODER
KEY WAKE UP
D420
74
69 CD OPEN
ROTARY
ENCODER
RV401
VOLUME
S401-415
(FRONT PANEL KEYS)
S820
(CD LID OPEN/CLOSE DETECT)
KEY0,
KEY1
KEY1
89,90
RESET SWITCH
Q401
RY901
+1.5V
REGULATOR
IC303
15
11
13
7
5
+INA
+INB
ST-BY
OUTA
OUTB
+
MUTE
Q355
MUTE
Q019
D006
VM+10V
SUB B+
SUB B+
SWITCH
Q409
+3.3V
REGULATOR
Q018
+3.6V
D009
D011
LED+B
+10V
REGULATOR
IC002
–29V
REGULATOR
Q013-016
AC DET
Q901-904
DC DET
Q050,051
AMP B+
AMP B–
AMP B–
-35V
FAN B+
SW
Q603-605
OVER
HEAT
DET
Q354
MUTE
Q606
L : POWER ON
+14V
TH351
J701
LDB20
RY351
PHONES
SPEAKER
IMPEDANCE
USE 6
Ω
+
–
–
–
+
R
L
J302
FAN
FAN MOTOR
DRIVE
Q601,602
+
D602
FAN B+
SW
Q603-605
MUTE
Q606
L : POWER ON
+14V
RELAY
SW
Q356
Ver.1.2
Click on the first or last page to see other CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 service manuals if exist.