Block Diagram -Display Section - Sony CDX-F7500 Service Manual

CDX-F7500/F7700
3-4. BLOCK DIAGRAM — DISPLAY SECTION —
SYSTEM CONTROL
ROTARY
35 REIN0
ENCODER
ENC901(1/2)
36 REIN1
KEY MATRIX
KEYIN0
85
S901-910,912
LSW901-908
84 KEYIN1
ENC901(2/2)
88 KEY ACKO
89 KEY ACK1
87 KEY ACK2
70 RCIN1
CNJ101
86 RCIN0
(REMOTE IN)
RESET
IC302
OUT RESET
BU+5V 2 IN 1 10
S301
RESET
MAIN
C
RESET
SECTION
37 NOSE SW
(Page 21)
S300
(NOSE DET)
8 XCIN
X301
32.768kHz
9 XCOUT
DISPLAY CONTROL
IC303 (3/3)
IC901
FL DAT1 33
FL DAT2 99
DISP CE 95 1 CE
FL DAT3 3
DISP SI 98
30 SI
LAT 21
DISP SO 99 29 SO
BK 22
DISP CKO 100 31 CLK
35
FL CLK
CNVSS 7 7 CNVSS
GCP1 25 4
GCP2 23
5
GCP3
28 1 GCP
DISP RESET 61 10 RESET
BUFFER
GCP4 27 2
IC902
RESET
1
IC904
ILL+B
LED901,910-924
LSW901-908
POWER
CONTROL
BATT
Q601,602
DOOR IND 90
LED931,932
REMOTE CONTROL
RECEIVER
IC903
+5V REG
ILL+B
D911
1
VCC
IR
SIRCS 1 2 OUT
XOUT 11
POWER
X302 +5V REG
ILL+B CONTROL
6MHz Q915
Q914,916
XIN 13
FLD ON 92
FL ON
93
POWER
BATT CONTROL
DC-DC
Q623,Q624
CONVERTER
IC620
5
DC-DC VCC
CONVERTER
FSW OUT 7 4
22 CT OUT
CONTROL
Q621,622
IN 1
FSW IN 21
22 22
6
5
4
12
13
7
FL900
FLUORESCENT
INDICATOR
GCP
TUBE
11 11
FL VDD+5V
T620
D623,624
FL+4.3V
D620,621
FL+1V
ON/OFF
DRIVE FL+55V
Q620
D622