Block Diagram -Display Section - Sony CDX-C90 Service Manual

CDX-C90
Q Q
3 7 6 3 1 5 1 5 0
4-4. BLOCK DIAGRAM — DISPLAY SECTION —
S1–19,S1A,LSW1
KEY DET
IC304
7 1
6 2
CNJ300
(REMOTE IN)
D374
5
RC IN0
3
RC IN1
4
ENC+
6
ENC–
2
ILL ON 10V
ILL ON 10V
ILL ON 10V ILL ON 10V P ON 10V
D3–6,9–12, LED1–6,
LSW1 9–30
(AMBER)
LED DRIVE
(AMBER/GREEN)
Q1,2
T E BU 5V
L 1 3 9 4 2 2 9 6 5 1 3
S621
BU 5V
(CLOSE END)
LED300,302 S620
(OPEN END) (OPEN END)
S622
(10 DEG)
LED DRIVE
Q301
S623
(20 DEG)
FP OP
FP CL
EMPH
EN1
ROTARY
ENCODER
CD 3
SECTION
BUS SO
BUS ON
BUS SI
BUS CLK
BU IN
RESET
04
w w w
SYSTEM CONTROL
IC300(2/2)
SIRCS 24
52 KEYIN0
KEYIN1
53 SRAM RESET
IC301
D300,301
RAMBU 55 1 OUT 2
VDD BU 5V
57 AD ON
EEPROM
D312
IC303
EECLK 68 EECLK
6
EEDATA 69 5 EEDATA
77 KEY ACT
51 RC IN0
75 RC IN1
106 ENC+
107 ENC–
BUSON 14
UNISO 21
UNISI 20
UNICK 22
BU IN 76
SYSRST 64
LED7,8,
31–48
RESET
90
(GREEN)
Q310
COLOR
13
(RESET)
POS1
35
32 POS0
36 POS2
POS3
37
84
FP OPEN
83 FP CLOSE
82 EMPH I
LCD ANG 41
RE IN1
58
59 RE IN0
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CNJ301
(BUS CONTROL IN)
94 LINK-OFF
Q309
8
SIRCS
6 3 CONTROL
Q308
5 2
4 1
IR
7
BUS INTERFACE
RECEIVER 2
IC302 2 SIRCS
BATT
PH1
3 SIRCS
BATT
4 2
1 6 3
HIGH VOLT
BATT
CHECK
CHECK
Q407
12 9 8 11 10 13
Q311
UNI-SO
13
87 BUS-ON
15 UNI-SI
17 UNI-CI
84 BU-IN
64 BU-IN
D406
D409
66 EXTAL
S630
X500
RESET
14.74MHz
1 2
BU 5V 67 XTAL
IC400
Q Q
3 7
IC502
1 2 63 SYSRST
14 LCD-RX
u 1 6 3
y
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2 4
8 9 9
DISPLAY CONTROL DISPLAY SRAM
IC500 IC504
SRAM-CS 88 22 CE
HWR 71
29 R/W
RD 70 24 OE
1
A0
12
23
A0-A18
25
28
A18
30
31
36
A0 13
I/O1
D8-D15
43
15
45
17
A19 56
21 I/O8
18
D0
DISPLAY FLASH
21
IC503
23
D15 34 29
DQ0
D0-D15
36
38
45 DQ15
1
A0
A1-A19
8
16
25
IC505 A18
48
6 3 1 5 1 5 0 11 WE 8 9
LWR 72
28
OE
A20 100
26 CE
ROM-CS 91
IC501
LCD-RST 4
LCD-ST 7
LCD-SO 12 LCD
MODULE
LCD-CO 16
CONTRUST
CONTROL
Q304,305
BOOTI 9 BOOT
EL ON 6
EL ON
ILL ON 5
ILL ON
BU IN
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8 9 9
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MAIN
4
SECTION