Block Diagram -Display Section - Sony WX-GT77UI Service Manual

WX-GT77UI/GT78UI/GT78UIM
4-2. BLOCK DIAGRAM – DISPLAY Section –
KEY MATRIX
S2–13,15–21,250
S1
PUSH DIAL SELECT
(VOLUME)
ROTARY
RE0
ENCODER
RE1
J701
(REMOTE IN)
X502
32.768kHz
X501
7.92MHz
REMOTE
CONTROL
SIGNAL 3
RECEIVER
IC1
WX-GT77UI/GT78UI/GT78UIM
SYSTEM CONTROL LCD DRIVER,LED CONTROL
IC501 (2/2) IC2
4
S6
I |
39 KEYIN1 S17
15
LCD_SO 49 78 DI •
•
19
S21
LCD_SCK CL
50 77
KEYIN0
40 |
I
LCD_CE 48 76 CE
S49 LCD1
47
•
•
49 LIQUID
46 KEYACK1
S51
CRYSTAL
I |
S66 DISPLAY
64
• •
PANEL
69
S67
COM1 65
I
|
COM4
68
11 RE-IN0
12 RE-IN1
BLUE
P5/S5 3
GREEN/AMBER
P4/S4 2
DIMMER
P3/S3 1
34 RC IN1
BLINK
P2/S2 80
41 RC IN0
45 KEYACK0
L801 F801 USB POWER
14 XIN
SWITCH
BATT
Q801
13 XOUT
USB POWER
92 OSCIN
CONTROL
Q802
93 OSCOUT
DD ON
80
SYNC OUT 99
95 SIRCS
USB ON 79
USB OVER 89
PANEL+B
D52,55,56,59,60, D54,57,58,61,62,65,
66,69,70,73,74,77,
63,64,67,68,71,72,
75,79,80,83,84,87, 78,81,82,85,86,88,
251,252,255,257 253,254,258
LED LED
DRIVE DRIVE
Q42 Q41
SWITCHING L802
REGULATOR
Q803
DC/DC CONVERTER
D803
DC/DC CONVERTER
CONTROL
IC801
IC803
3 CLR D804
Q 5 1 RC DRV 6
2 B
CD
USB D+
MECHANISM
USB D–
UNIT
(MG-101Z)
(2/2)
16 16
D48-50 D44-47
LCD VOL
BACK LIGHT ILLUMINATION
LCD
VOL ILLUMINATION
BACK LIGHT
LED DRIVE
LED DRIVE
Q43
Q40
GT77UI
USB POWER
CONTROL SWITCH
IC802
+5V REG
IN
2 OUT 6 VBUS
Q806
OUT 7
3 IN
OUT 8
VOLTAGE
DETECT
Q804,805
4 EN
5 OC
CN203
VBUS
5
L206
D+
4
D–
3
2
• Signal Path
: USB
(USB)