Sony CDX-C8850R, Service Manual

Page: 38 / 86

38 38
RES RST
BATT
CLK
DATA
BUS ON
BUIN
BUS ON
LINK OFF
BUS ON
BUS CLK
BUS SI
BU IN
RESET
BUS SO
CLK
IN
DATA
IN
DATA
OUT
2 13
3 10
4 11
1 12
6
9
8
BUS INTERFACE
IC271
RST
DSP CK
SYS RST 90
SIRCS
KEY IN0
KEY IN1
6
UNI SO
BUS ON
21
24
7
UNI SI
UNI CK
20
47
22
BU IN
BOOT
77
76
19
DSP SI 17
SPLAT 78
LCD ANG 41
DOOR IND 95
PWM 65
SHIFT 72
48
AD ON
KEY ACK
107
64
NOSE SW
DOOR SW
RX/FLS SI
115
12
TX/FLS SO 13
SYSTEM CONTROL
IC500 (2/2)
BUS ON
SWITCH
Q272
RESET
IC506
5
6
4
2
3
1
7
8
CN271
(BUS CONTROL IN)
D276
D275
BATT
CD
SECTION
2
Q275
Q273
1 2
RESET
IC702
7
3
6
BU5V
IR
RECEIVER
IC910
KEY MATRIX
LSW701,
LSW900-918
S900
1
S703
RESET
109
60 RC IN1
49 RC IN0
RE IN0
RE IN1
KEY
ACTIVE
Q523
1
2
ROTARY
ENCODER
RE900
S500
(NOSE DET)
CNJ272
(REMOTE IN)
3A 1Y
2A
Q274
38
98
101
49
81
69
85
86
57
54
62
60
52 63
61
33
97
DSPLAT
SP SI
SP CK
TX/FLSSO
ILL ON
45 TIT IND
LCD CEO
P ON
66 LCD INH
70 LCD CE1
60 LCD DATA
64 LCD CLK
RX
DOOW SW
BOOT
EXTAL
XTAL
RES
UNI SO
UNI SI
UNI SCK
BU IN DATA
CSK
CE1
0E
VLCD
VLC1
VLC2
VLC3
BUS ON
X701
18.432MHz
11
16
17
18
19
9
8
7
LCD DRIVER
IC920
DISPLAY CONTROL
IC701
LCD CLK
LCD INH
LCD DATA
LCD CE0
VLCD
VLC1
VLC2
VLC3
19
11
10
9
8
18
17
14
VLC4
VLC5
7
6
LCD DRIVER
IC900
IC921
3
GREEN 1
LIQUID CRYSTAL
DISPLAY PANEL
LCD900
POWER
CONTROL
Q904
AMBER/GREEN
SELECT
Q900, 903
AMBER 2
AMBER/GREEN
SELECT
Q901, 902
DIMMER 4
LED
DRIVE
Q971, 972
LCD10V
10V 10V
LCD10V
LCVD10V
POWER
CONTROL
Q251
BATT
POWER
CONTROL
Q252
POWER
CONTROL
Q253, 256
POWER
CONTROL
Q423, 424
VOLTAGE
CHECK
IC421
REG
Q884
PWM
CONTROL
IC871
POWER
Q881
REG
CONTROL
Q421, 422
POWER
CONTROL
Q887
LCD CONTRAST
ADJUST
Q254, 255
BATT
BATT
POWER
CONTROL
Q886 (2/2)
POWER
CONTROL
Q886 (1/2)
SHIFT
DRIVER
Q890
PU5V
BU5V
10V
MD ON
S8V
VDD5V
REG
Q885
REG
Q882, 883
REG
Q888
MD5V
BATT
BATT
CD
SECTION
4
04
OVER-VOLT
CHECK
Q271
BATT
4-3. BLOCK DIAGRAM — DISPLAY SECTION —
CDX-C8850R
(Page 37)
(Page 37)