Block Diagram -Display Section - Sony CDX-GT828U Service Manual

CDX-GT828U/GT870US/GT878US
5-2. BLOCK DIAGRAM – DISPLAY Section –
KEY MATRIX
S902–914
RE901
PUSH ENTER/ SOUND/ MENU
ROTARY
ENCODER
J370
(REMOTE IN)
S302
FRONT PANEL
DETACHABLE DETECT
KEY MATRIX
S701,915,916
MAIN
RESET
A
SECTION
(Page 19)
BU+3.3V
RESET
IC302
LED DRIVER
Q601,602
LED701 LED702
DOOR
INDICATOR
FM(50K)
S301
AM(9K)
FREQUENCY
SELECT
FM(200K)
AM(10K)
GT870US/GT878US
CDX-GT828U/GT870US/GT878US
REMOTE CONTROL
SIGNAL RECEIVER
SYSTEM CONTROL
IC903
IC303 (2/2)
OUT
GT878US FLASH MEMORY
IC905
29–36
DQ0–DQ15
38–45
78 RE0
77 RE1
1–9
A0–A19 16–25
48
87 KEYACK2
55 RC IN1 CE 26
86 RC IN0 OE 28
RESET 12
79 NOSE
90
DISP RESET
93
DISP CE
DISP SI 98
99
DISP SO
DISP CKO 100
84 KEY IN0
RESET
88 KEY ACK0
IC902
XIN 8
X301
32.768kHz
XOUT 9
XOUT 11
X302
6MHz
CNVSS
XIN 13
BUFFER
Q910,911
10 RESET FSW IN 2
S103
RESET
FL ON 72
FSW CONTROL
FSW OUT
58
Q621,622
BATT
USB ON 69
POWER
BU+3.3V CONTROL
95 DOORIND
Q651,652
BU+3.3V
HS EN 75
HS OC
76
1 DST SEL0
FRONT PANEL
OPEN/CLOSE
DOOR 91
DETECT SWITCH
Q606,607
D600
FLD ON 74
1
+3.3V REG
BU+5V
5 4
IC600
FL DRIVER,LED CONTROL,
FLASH MEMORY CONTROL
IC901
FL DATA1 33
3
89 SIRCS
FL DATA2 99
FL DATA3
3
93 KEY IN1
LAT TA2 OUT 24
95 KEY IN2
GCP TA0 OUT 28
FL CLK 35
BK TA3 OUT 22
GCP TA4 IN
19
FLVDD1(3.3V)
FLVDD2(55V)
D0–D15 71–86 D0–D15
XOUT 11
48–59
A0–A19 61, A0–A19 X901
63–69
6.75MHz
XIN 13
47 CE
42 RD
ILL RED 92
10 RESET
ILL GREEN
90
1 CE
29 SYS SO
ILL BLUE 91
30 SYS SI
BLINK
26
31 SYS CLK
Q909
1
WRL/WR 44
Q908
7 CNVSS HOLD 39
GT878US
FL ON
SWITCH
Q624
REGULATOR CONTROL
IC621
3 1
8
7
SYNC L602
POWER
BATT 1 VIN SW 2
SWITCH
Q603
D662
VOLTAGE
+5V REG
DETECT
IC602
Q662,663
V–BUS
Q901
D905 D902
S901
FRONT PANEL
OPEN/CLOSE
CD
DETECT USB D–
MECHANISM
USB D+
UNIT
(MG–101I)
(2/2)
FLVDD1(3.3V)
20 20
FL901
FLUORESCENT
INDICATOR TUBE
18 SI1
19 SI2
20 SI3
11 LAT
13 GCP
PANEL+B
17 CLK
10 BK
6 VDD1
9 VDD2
FL F+ 1 F+
2 F+
3 F+
FL F– 38 F–
39 F–
RED LED GREEN LED
40 F–
DRIVER
Q902
MAIN
STB B
SECTION
(Page 19)
POWER
CONTROL BATT
Q623,642
5
VCC
DRIVER
6 CS OUT 4
Q620
DC-DC
CONVERTER
IC620
D640
7 CT IN 1
VOLTAGE
DETECT
Q641
USB VBUS REG
IC603
6
IN OUT V–BUS
2
OUT 7
3 IN
OC OUT 8
EN
4 5
USB BUS INTERFACE CN902
IC904 (USB)
6
3 2C
c
2A
5 5
7 1C
c
1A 1 4
c
6 2B
1
c
2 1B
LED901–904,
906–916
LED917–920
BLUE LED LED
DRIVER DRIVER DRIVER
Q903 Q904 Q905
BATT
T620
DC-DC CONVERTER
TRANSFORMER
FL F+
D623
FL F–
FL VDD2(55V)
D622
• Signal Path
c
: USB