Sony CX-VX55, Service Manual

Page: 43 / 74

43 43
CX-VX55/VX77
CX-VX55/VX77
Ver. 1.1
6-3. BLOCK DIAGRAM — TUNER/POWER SECTION —
REMOTE
CONTROL
RECEIVER
T901
BD901
AC IN
VOLUME
VR001
STANDBY
LED001
T902
PC912
ZD911
D911,912
D951
D902
Q910
PC911
D941
D927
D928
Q921,922
Q971,975
D926
D924
D929
D924
D923
D903
D922
Q973,982
+35VF
F2
F1
-12VF
5.6VCPU
+12VA
+8V
VKK(-28.5V)
+2.5V
+3.3V
5V
5.6VCPU
4
TM301
FOR
DOWNLOAD
PN103
PN105
T AUDIO L OUT
T AUDIO R OUT
R-CH
TUL
STEREO
T DI
TDO
T CLK
T RDS DATA
T CE
T RDS CLK
STEREO
T DI
TDO
T CLK
T RDS DATA
T CE
T RDS CLK
TUNER
PACK
6
2
3
7
8
9
8
7
5
6
10
2
4
1
2
4
1 1 2
2
4
1
1
2
4
7
6
96
DATA0
DATA1
95
CLK
97
RESET
11
41-45
47-50
52-59
27
29 1
18
20
21
30-40
REG
REG
POWER
CONTROL
POWER
CONTROL
Q972
-28V REG
-12V REG
+3.3V REG
+12V REG
+5V REG
+8V REG
PC910
VOLTAGE
DETECT
VOLTAGE
DETECT
+5V REG
VOLTAGE
DETECT
RESET
Q101
LED ON/OFF
SWITCH
FUNCTION
KEY
Q001
5V
SW001-008
VOL DN
VOL UP
KEY1
REMOCON
STANDBY LED
RESET
CLK
DATA1
DATA0
G1-11
P1-17
P CTL
RMC001
DIGITRON
VFD001
F1 F2
FB
OCP/BD
VFB
DRAIN
DRAIN
DRAIN
VCC
VCC
D
• Signal Path
• R-ch is omitted due to same as L-ch.
: AUDIO (TUNER)
B
AUDIO
SECTION
IC101
(3/3)
SYSTEM CONTROL,FL DRIVER
IC942
IC941
IC921
IC922 IC924
IC923
IC901
POWER PROTECTION
IC902
POWER PROTECTION
D921
P.SENS
D
AUDIO
SECTION
MUTE
C
AUDIO
SECTION
(Page 42)
(Page 42)
(Page 42)