CDX-GT72W/GT720/GT770
CDX-GT72W/GT720/GT770
24
24
5-2. BLOCK DIAGRAM – DISPLAY Section –
MAIN
SECTION
A
MAIN
SECTION
B
STBY
84
93
98
99
88
11
13
9
8
SYSTEM CONTROL
IC303 (2/2)
DC–DC
CONVERTER
IC620
DISPLAY CONTROL
IC901
KEY IN0
SYS SO
SYS SI
DISP CE
LAT TA2 OUT
VDD1
VDD2
FL DAT1
FL DAT2
FL DAT3
FL CLK
FL CLK IN
FL CLK OUT
GCP TAO OUT
BK TA3 OUT
GCP TA4 IN
DISP SI RX
DISP SO TX
24
71
PLAG IN
26
BLINK
92
ILL RED
KEY ACK0
78 RE 0
77 RE 1
XOUT
XIN
XCOUT
XCIN
RC IN0
KEY ACK2
10
80
RESET
TEMP TR
MOT+
29
1
30
100
SYS CLK
DISP CKO
31
SYS CE
KEY 2
86
85 KEY 1
LAT
FL VDD+3.3V
FL VDD+55V
FL+4.8V
FL+1.4V
SI1
SI2
SI3
CLK
7
90
CNVSS
RESET
FL VDD+3.3V
PLAG IN
D303
CNVSS
DISP RESET
91
NOSE SW
7
10
XOUT
XIN
11
13
BU+3.3V
2
FSW IN
58
FSW OUT
74
FLD ON
BU+3.3V
FIN
RIN
PGND
BATT
BU+5V
X301
32.768kHz
X302
6MHz
X901
6.75MHz
S901
(NOSE DET)
KEY PUSH
78
KEY
MATRIX
ENC901(2/2),
S911–919
ROTARY
ENCODER
ENC901 (1/2)
RESET
RESET
IC302
RC IN1
ILL+10V
LED901–907,928,930
LED920–923
7
LED DRIVE
Q923
LED DRIVE
Q920,921,924
S902
RESET
FL900
FLUORESCENT
INDICTOR TUBE
4
7
F2
1
I
3
F1
19
I
21
89
SIRCS
CT
BATT
BATT
OUT
IN
FB
5
VCC
72
FL ON
6
4
1
2
CS
91
ILL BLUE
90
ILL GREEN
64
3
9
7
1
MOT–
65
4
FP IDET
OUT1
OUT2
VCC
79
6
MOTOR ON
63
P SNSR
68
CLOSE SW
66
OPEN SW
67
1 DST SEL0
95 DOOR IND
FL VDD+3.3V
S301
FREQUENCY
SELECTOR
BU+3.3V
GT770
9
33
16
99
17
3
18
35
15
5
100
GCP
28
11
BK
8
22
19
55
86
87
T620
DC–DC
CONVERTER
TRANSFORMER
D623
D620,621
D622
FL+4.8V
FL+1.4V
FL VDD+55V
TRANS
SWITCHING
DRIVE
Q620
TH301
OPEN/CLOSE
MOTOR DRIVE
IC702
CNJ101
(REMOTE IN)
TRANS ON/OFF
DETECT
SWITCH
Q641
DC–DC
CONVERTER
CONTROL
Q621,622
FL ON/OFF
CONTROL
SWITCH
Q624
B+ CONTROL
SWITCH
Q623,642
FL B+
SWITCH
Q301,302
MOTOR+9V
REG
IC703
MOTOR ON/OFF
SWITCH
Q702,703
PULSE SENSOR
DETECT
Q701
SWITCH
BOARD
FP I DET
AMP
IC701
DOOR INDICATOR
CONTROL SWITCH
Q134
LED990
CD
INDICATOR
REMOTE CONTROL
SIGNAL RECEIVER
IC903
NOSE SW
DETECT SWITCH
Q303
M904
(OPEN/CLOSE)
10K
9K
(Page 23)
(Page 23)
