Block Diagram - Display Section - Sony CDX-RA700 Service Manual

3-3. BLOCK DIAGRAM — DISPLAY SECTION —
KEY MATRIX
LSW901–915,918–921,
S915–918
D501
PANEL+B
KEY ACKNOWLEDGE
SWITCH
LSW901–915,
Q664
918–921
J370
(REMOTE IN)
BU+3.3V
10K
S501
( FREQUENCY )
SELECT
9K
RA750 RA750
PANEL+B
LED961
LED DRIVE
Q903,904
S961
OPEN
NOSE SWITCH
/CLOSE
CONTROL
Q2,8
SYNCHRO SWITCH
CONTROL
Q4,10
(Page 20)
MAIN
D RESET
SECTION
D353
CD
C
SYS RST
SECTION
(Page 19)
RESET
IC602
BU+3.3V 2 VDD VOUT 1
S103
RESET
REMOTE CONTROL
SIGNAL RECEIVER
IC972
IR OUT 2
X502
32.678kHz
X501
18.432MHz
CDX-RA650/RA700/RA750
SYSTEM CONTROL
IC501 (3/3)
41 KEYIN0
MASTER TX
28
40 KEYIN1
MASTER RX 27
MASTER IF 29
52 KEY ACK
DISP RESET 18
XKEY ON
76 RESET
FL+3.3V
IC904
71 RCIN1
43 RCIN0 X901
5MHz
3 AREASEL0
FSW IN 10
5 NOSE SW
POWER
SWITCH
BATT
Q613,614
70 SYNCHRO SW
FL ON 19
67 DISP FLASH W
FREQUENCY
CONTROL
FSW OUT 66
SWITCH
Q620
88 SYS RST
77 RESET
PANEL+B
RA650/RA700
ILL+B REG
BU+5V
Q7,9
DISP ON 20
64 SIRCS
BATTERY
79 XIN
PANEL+B CHECK
Q5
80 XOUT
MON 97
MOTOR+ 98
82 OSC OUT
MOTOR– 99
83 OSC IN
MSW 100
S651
(OPEN/CLOSE)
FL DRIVE
IC901
FL CKO1 52
FL CKI2 42
DISP RX
26
55
FL CKI3
25 DISP TX
18 MAS IF
37
LATCH
14 RESET
39
BK
EDGE TGR1 27
EDGE TGR2 50
GCP TGR3 46
GCP TGR4
58
13 X2
51
FL SO1
12 X1
41
FL SO2
FL SO3 54
GCP SELECT
IC902
30 5
GCP1
GCP2 47 2
11
45 4
GCP3
57 1
GCP4
D626,630
DC–DC CONVERTER
IC620
FL POWER FL POWER
DETECT CHECK
OUT1 11
8 PVCC2
Q230 Q606,607
12 PVCC1
18 VCC
OUT2 9
2 RT
+4.8V REG
Q621
ILL+B
RA750
DISPLAY
ILL+B REG POWER
BU+5V
CONTROL
IC10
FL+3.3V
Q13,14
REG
ILL+B
IC903
D653–656
+3.3V REG
BATT
IC652
21 21
FLUORESCENT
INDICATOR TUBE
6 CLK
11 LAT
12 BK
SI1
5
4 SI2
3 SI3
10 GCP
FL+3.3V 13 VDD1
16 VDD2
BATTERY
CHECK
Q609,610
D623,624
1 F+
2 F+
17 F–
18 F–
BATTERY
CHECK
Q611,612
MAIN
E
BU IN
SECTION
FL+3.3V
(Page 20)
OPEN/CLOSE
MOTOR DRIVE
IC651
1
VCC
3 IN.1 OUT.1 9
4 IN.2
M904
(OPEN/CLOSE)
OUT.2 7
CDX-RA650/RA700/RA750
FL900