17
17
CDX-F7710/F7710S/F7715X/F7750/F7750S
CDX-F7710/F7710S/F7715X/F7750/F7750S
3-3. BLOCK DIAGRAM — DISPLAY SECTION —
(Page 16)
T620
DC-DC
CONVERTER
TRANSFORMER
DC-DC
CONVERTER
IC620
D623,624
D620,621
D622
FL+4.3V
BATT
FL+1V
FL+55V
X302
32.768kHz
77
78
80
81
41
69
68
42
98
44
75
DISPLAY CONTROL
IC901
GCP
BUFFER
IC902
FL900
FLUORESCENT
INDICATOR
TUBE
KEYIN0
DISP IF
MAS IF
FL SO1
FL SO2
FL SO3
LATCH
BK
GCP
GCP1
GCP2
GCP3
GCP4
FL CKO1
KEYIN1
50 KEY ACK
5V
FL VDD+3.3V
BATT
45 XKEY ON
RCIN1
RCIN0
RESET
NOSE SW
2 IN
1
OUT
X1A
XOA
X0
X1
X301
18.432MHz
S301
RESET
18
17
30
MAS IF
DISP IF
70
DISP FLS W
8 FLMDO
SI1
SI2
SI3
LAT
BK
CLK
GCP
26
DP TX
26 BUS RX
25
DP RX
25 BUS TX
5
71
DISP RESET
14 RESET
1
RESET
IC904
ILL+10V
63
SIRCS
59
FL ON
60
FSW SFT
7
FSW IN
62
FL DP POW
66
DOOR IND
1
VCC
IR
LED901—924
LED931,932
REMOTE CONTROL
SIGNAL RECEIVER
IC903
2 OUT
BU+3.3V
RESET
KEY MATRIX
S901-919,
ENC901(2/2)
73
74
SYSTEM CONTROL
IC303 (3/3)
REIN0
REIN1
X901
5MHz
ROTARY
ENCODER
ENC901(1/2)
65
S300
(NOSE DET)
RESET
IC302
CNJ101
(REMOTE IN)
DOOR INDICATOR
B+ SWITCH
Q601,602
51
6
41
5
54
4
37
12
39
13
52
FL CKI3 55
FL CKI2 42
7
11
47
2
45
4
57
X1 12
X2 13
1
11
MAIN
SECTION
C
FL VDD+3.3V
REG
IC900
POWER
CONTROL
Q623,Q642
FL ON/OFF
DRIVE
Q620
DC-DC
CONVERTER
CONTROL
Q621,622
7
4
1
5
VCC
OUT
IN
CT
KEY
ACKNOWLEDGE
SWITCH
Q301
D301
