Display/Power Supply Section - Sony DSX-A50BT Service Manual

5-2. BLOCK DIAGRAM - DISPLAY/POWER SUPPLY Section -
LIQUID CRYSTAL DISPLAY
LCD901
SEG1 – SEG32
COM1 – COM4
+9V
B/U B+ REGULATOR
IC402
LED902 – 907,
LSW901 – 906 (1/2)
(ILLUMINATION)
DIMMER
CONTROL
Q901
DSX-A50BT
X101
32.768kHz
X102
LIQUID CRYSTAL DISPLAY DRIVER
7.92MHz
IC901
32
SEG1 – SEG32
4
COM1 – COM4
DI 48
CL 47
CE 46
LED901
(LCD BACK LIGHT)
2 DIMMER
CN001 CN103
12 12
REMOTE CONTROL
RECEIVER
IC902
LSW901 – 906 (2/2),
S901 – 906
(FRONT PANEL KEY)
ROTARY
PUSH ENTER/
ENCODER
SELECT/
S907 (1/2)
ROTARY
(VOLUME)
ENCODER
S907 (2/2)
J101
REMOTE IN
SYSTEM CONTROLLER
IC101 (2/2)
9 XOUT
RESET
SIGNAL
RESET 10
GENERATOR
8 XIN
IC105
11 OSCOUT
BU +3.3V
13 OSCIN
SYS_3.3V
SYS_ON 87
99 LCD_SO
100 LCD_CLK
98 LCD_CE
BT +3.3V
BT_MIC_ON (A50) 81
VDD_3.3V
+8.5V
59 ILL_ON
SYS_EN 73
AUDIO_EN 74
AMP_REM 72
1 NOSE_SW
USB_VBUS
2 SIRCS
90 KEYACK1 FLT_USB 50
EN_USB 48
93 KEYIN0 SYNC_OUT 24
EN_SYS 51
92 KEYIN1
B/U B+
79 RE_IN0
BACK UP
80 RE_IN1
VOLTAGE
BU_IN 66
DETECT
Q101, 104
88 RCIN1
95 RC_IN0
ACCESSORY
89 KEYACK0 ACC_IN 55 CHECK
Q106
15 15
REGULATOR
IC401
+3.3V
5 VDD (BACKUP5V)
REGULATOR
IC102
VCC1 9
VCC2 8
B+ SWITCH
Q106
+3.3V
REGULATOR
IC601
15 REG 3.3V
10 REG_EN
3 AUDIO 8.5V
2 AUDIO_EN
12 AMP_EN AMP12V 13
DC/DC CONVERTER
IC501
5 USBOUT USBIN 7 2 LX
9 12 8 4
D107
D106
BATTERY
CHECK
Q103
DSX-A50BT
CN102 (2/2)
16 +B
18
FU101
19
5 AMP-REM
6 ANT-REM
VIN 3
7 ACC