Block Diagram - Display Section - Sony CDX-GT500 Service Manual

3-3. BLOCK DIAGRAM — DISPLAY SECTION —
KEY MATRIX
ENC902,LSW901–905,
907–909,S801,908,911–921
D712
KEY ACKNOWLEDGE
SWITCH
Q710
ENC902
ROTARY
ENCODER
J530
(REMOTE IN)
BU+3.3V
10K
S710
( )
FREQUENCY
SELECT
9K
GT550
PANEL+B
LED900–915,
LSW901–905,
907,908 DOOR
INDICATOR
SWITCH
Q601
LED802,803
(Page 18)
MAIN
D
RESET
SECTION
D710
CD
C SYS RST
SECTION
(Page 17)
RESET
IC710
2 1
BU+3.3V VDD VOUT
REMOTE CONTROL
SIGNAL RECEIVER
IC900
IR OUT 2
32.678kHz
18.432MHz
CDX-GT50W/GT500/GT500EE/GT550
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SYSTEM CONTROL
IC711 (3/3)
KEYIN0
41
40 KEYIN1
52 KEY ACK
76 XKEY ON
31 RE IN0
32 RE IN1
71 RCIN1
43 RCIN0
DDC ON
SWITCH
BATT
Q623,642
FL ON
19
3 AREASEL0
OSCILLATOR
FREQUENCY
FSW OUT 66
SHIFT CONTROL
Q621,622
5 NOSE SW
S600
(NOISE DET)
FSW IN 10
BATT
DISP+3.3V
63 DOOR IND
D711
DISP RSET 18
22 SYS RST
DISP RX 27
DISP TX 28
MAST IF 29
77 RESET
S700
RESET
DISP FLASHW 67
64 SIRCS
79 XIN
X711
80 DISP
XOUT
VDD+3.3V
BU+5V
REG
IC600
82 OSC OUT
X710
DISP ON 20
83 OSC IN
T620
DC–DC CONVERTER
TRANSFOMER
BATT
DC/DC
CONVERTER
IC620
1 IN
2 FB
BATT
OSCILLATOR
BATTERY
FREQUENCY
CHECK
COUNT SWITCH
Q641,643
Q620
5 VCC
OUT 4
7 CT
DISPLAY CONTROL
IC901
RESET
IC971
FS SO3
FS SO2
14 RESET FS SO1
FL CKO1
FL CKO2
25 BUS TX
FL CKI3
26 BUS RX
18 MAS IF
GCP1
8 FLMD0
GCP2
GCP3
12 X1
X901
5MHz
GCP4
13
X2
LATCH
DISP+3.3V
FBK
EDGE TGR1
EDGE TGR2
GCP TGR3
GCP TGR4
19 19
RECT
D624
RECT
D622
MAIN
E
BATTERY CHECK
SECTION
(Page 18)
54
41
51
52
42
55
GCP SELECT
IC902
30 1
47 2
11
45
4
57
5
37
39
27
50
46
58
CDX-GT50W/GT500/GT500EE/GT550
FL900
VACUUM
FLUORESCENT
DISPLAYS
37 F+
38 F+
39 F+
F–
1
2 F–
3 F–
34 VDD2
DISP+3.3V 31 VDD1
21 SI3
22 SI2
23 SI1
24 CLK
28 GCP
29 LAT
30 BK