Read Sony CDX-GT700D / CDX-GT705DX Service Manual online
21
21
CDX-GT700D/GT705DX
CDX-GT700D/GT705DX
4-3. BLOCK DIAGRAM — DISPLAY SECTION —
T620
DC-DC
CONVERTER
TRANSFORMER
DC-DC
CONVERTER
IC620
D623,624
D620,621
D622
FL+4.3V
BATT
BATT1
FL+1V
FL+55V
X301
32.768kHz
REMOTE
CONTROL
SIGNAL
RECEIVER
IC903
EEPROM
IC802
9
8
11
13
84
98
99
85
55
86
10
FL DISPLAY DRIVE
IC901
FL900
FLUORESCENT
INDICATOR
TUBE
KEY_IN0
DISP SI/RX
DISP SO/TX
LAT_TA2_OUT
FL_DAT1
FL_DAT2
FL_DAT3
FL_DAT3
FL_CLK_IN
KEY_IN1
88 KEY_ACK0
89 KEY_ACK1
87 KEY_ACK2
FL+3.3V
Q624
S302
(FRONT PANEL DETECT)
BU+3.3V
FLD_ON
RC_IN1
RC_IN0
RESET
1 SIRCS
EESIO (DSP)
EECKO (DSP)
EECKO (DSP)
2 IN
1
OUT
2
OUT
5
SDA
6
36
35
SCL
XCOUT
XCIN
XOUT
XIN
X302
6MHz
S303
RESET
30
29
SYS_SI
SYS_SO
93
DISP_CE
1 SYS_CE
LAT
SI1
SI2
SI3
SI2
SI3
CLK
GCP_TA4_IN
BK_TA3_OUT
GCP_TA0_OUT
100
DISP CKO
31 SYS_CLK
90
DISP_RESET
10 RESET
1
RESET
IC904
ILL+B
91
NOSE_SW
92
DOOR SW
73
FSW OUT
2
FSW-IN
72
FL_ON
74
FLD_ON
95
DOOR_IND
LED911–921,923–925
LSW903(1/2)–913(1/2)
LSW903(1/2)–913(1/2)
LED931,932
CN902
BU+3.3V
RESET
STBY
KEY MATRIX
S900–905,906(2/2),
907–911
LSW903(2/2)–913(2/2)
SYSTEM CONTROL
IC303 (3/3)
78 RE_A
77 RE_B
X901
6.75MHz
ROTARY ENCODER
S906(1/2)
VOL/
PUSH SOUND
S901
Z
RESET
IC302
CNJ101
(REMOTE IN)
LED DRIVE
Q134,601
24
12
33
6
99
5
3
4
35
FL_CLK_IN 5
FL_CLK_OUT 100
7
28
22
19
XOUT 11
XIN 13
MAIN
SECTION
C
FL B+
SWITCH
Q301,302
POWER
CONTROL
Q623,Q642
SWITCHING
DRIVE
Q620
DC-DC
CONVERTER
CONTROL
Q621,622
7
4
1
5
VCC
OUT
IN
CT
D907
GCP
11
BK
13
(Page 20)
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