Block Diagram -Display Section - Sony CDX-C4840R Service Manual

CDX-C4840R/C4850R
Q Q
3 7 6 3 1 5 1 5 0
4-4. BLOCK DIAGRAM — DISPLAY SECTION —
BU5V
D910
BACK-UP
BATT CHECK
Q906
BATT
7
1 4
2 5
3 6
8
CNP801
(BUS CONTROL IN)
SIRCS
T E BUFFER
L 1 3 9 4 2 2 9 6 5 1 3
Q806
+5V REG
CD5V
Q909
04
w w w
SYSTEM CONTROL
IC801 (3/3)
RESET
2 1 90 RESET
IC902
S900
RESET
BUS INTERFACE
IC803
RST RST
2 13 29 SYSRST
BATT BATT
3 10 76 BU IN
CLK CLK
4 11 22 CK
DATA
9 21 SO
DATA
6
DATA
20 SI
8
BUS ON BUS ON
1 12 36 BUS ON
24 SIRCS
D909
ACC
ACC CHECK 101 ACC IN
Q905
D940
BATT
BATT CHECK
Q940
95 COM8V ON
POWER
+8V REG
+8V
CONTROL BATT
Q904
Q913,919
35 CD ON
MD ON
32
CD POWER CD POWER
+8V REG
BATT
CONTROL CONTROL
Q912
Q907,908 Q910,911
MD 8V
111 ANT REM
109 PW ON
1
AMP ON
ANT POWER
ANT+B AMP+B
CONTROL 2
Q924,925
VCC 4 BATT
AMP+B
BU5V 5 BU+B
POWER SUPPLY
IC901
x a o
. i
– 29 –
http://www.xiaoyu163.com
LCD DRIVE
IC501
SO 13 64 SO
LCD CKO 14 63 CKO LCD
CE 104 62 CE
COLOR
GREEN 2
SELECT
Q504
COLOR
AMBER 3
SELECT
Q503
DIM ON 1
UNI
Q Q
3 7
LCD POWER
+10V REG
BATT CONTROL
Q903
Q901,902
ILL ON 108
D-BASS
KEY IN0 46
S501
ROTARY
RE IN0 106
ENCODER
RE IN1 107
RE501
KEY IN1 47 KEY MATRIX
LSW511-529
KEY IN2 48
S502
D919
KEY ACTIVE
NIL 79
Q914,915
D918
NIL 37
IN1 61
CNP802
RC
(REMOTE IN)
IN0 49
u 1 6 3
y
http://www.xiaoyu163.com
2 4
8 9 9
LCD501
LED501-505,
LSW511-529
DIMMER
CONTROL
Q501,502
PL501,502
6 3 1 5 1 5 0 8 9
m
c o
.
– 30 –
2
8 9 9
2 4 9 8 2 9 9