Block Diagram - Display Section; Q Q - Sony CDX-C90R Service Manual

Q Q

3 7 6 3 1 5 1 5 0
3-4. BLOCK DIAGRAM — DISPLAY SECTION —
CNJ300
(REMOTE IN)
5
RC IN0
3
RC IN1
4
ENC+
6
ENC–
2
ILL ON 10V
FRONT PANEL
ILL ON 10V
T E
L 1 3 9 4 2 2 9 6 5 1 3
BU 5V
LED300,302
(OPEN END)
LED DRIVE
Q301
FP OP
FP CL
EMPH
CD 3
SECTION
(Page 28)
BUS SO
BUS ON
BUS SI
BUS CLK
BU IN
RESET
04
w w w
.
SYSTEM CONTROL
IC300(2/2)
FRONT PANEL
SIRCS 24
52 KEYIN0
53 KEYIN1 SRAM RESET
KEY DET
D300,301
RAMBU 55 1 OUT
IC304
7 1 57 AD ON
D312
6 2
EECLK 68 6
EEDATA 69 5
77 KEY ACT
D374
51 RC IN0
RC IN1
75
106 ENC+
107 ENC–
BUSON 14
ILL ON 10V
UNISO 21
UNISI 20
UNICK 22
ILL ON 10V P ON 10V
BU IN 76
SYSRST
64
(AMBER) (GREEN)
RESET 90
LED DRIVE
13 COLOR
(AMBER/GREEN)
BU 5V
S621
35 POS1
(CLOSE END)
S620
POS0
32
(OPEN END)
S622
36 POS2
(10 DEG)
S623
37 POS3
(20 DEG)
84 FP OPEN
83 FP CLOSE
82
EMPH I LCD ANG
41
58 RE IN1
FRONT PANEL
ROTARY
ENCODER
59 RE IN0
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8
CNJ301
(BUS CONTROL IN)
Q309
8
SIRCS
IC301
6 3
CONTROL
5 2 Q308
VDD 2 BU 5V
4 1
FRONT PANEL
7
BUS INTERFACE
IR
IC302
BATT
EEPROM
RECEIVER
IC303
BATT
1 6 4 3 2
EECLK
EEDATA
HIGH VOLT
BATT
CHECK
CHECK
Q407
12 9 8 11 10 13
D406
D409
Q Q
3 7 6 3
Q310 S630
(RESET) RESET
1
2 BU 5V
IC400
1
u 1 6 3
.
http://www.xiaoyu163.com
2 4
9 9 8
DISPLAY CONTROL
IC500
22
SRAM-CS 88
94
LINK-OFF
HWR 71 29
RD 70 24
12
23
A0-A18
25
2 2 SIRCS
3 SIRCS
28
30
31
A0 36
13
D8-D15
43
15
45
17
A19 56
21
18
Q311 D0
13 UNI-SO
21
87
BUS-ON
23
D15 29
34
15 UNI-SI
D0-D15
17
UNI-CI
36
84 BU-IN
38
64 BU-IN
45
A1-A19
66 EXTAL
1 5 1 5 0 8 9 2 4
X500 16
14.74MHz
XTAL
67
25
IC505
48
11
LWR 72
28
A20 100
26
ROM-CS 91
IC501
LCD-RST 4
LCD-ST 7
LCD-SO 12
LCD-CO 16
CONTRAST
CONTROL
Q304,305
BOOTI 9
EL ON 6
ILL ON 5
IC502
SYSRST
2 63
LCD-RX
14
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– 32 –
CDX-C90R
2
9 9
DISPLAY SRAM
IC504
CE
R/W
OE
1
A0
A18
I/O1
I/O8
DISPLAY FLASH
IC503
DQ0
DQ15
1
A0
8
9 8 2 9 9
A18
WE
OE
CE
LCD
MODULE
FRONT PANEL
BOOT
4 MAIN
EL ON
SECTION
ILL ON
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