Read Sony CDX-4270R Service Manual online
24
24
RESET
IC902
1
2
BU5V
BATT
90
13
RESET
SO
14
CKO
46
KEY IN0
104
CE
DATA
CLK
CE
ILL ON
76 BU IN
SYSTEM CONTROL
IC801 (3/3)
LCD DRIVE
IC501
LCD
RC
LCD
BACK-UP
CHECK
Q906
BACK-UP
CHECK
Q917,918
ACC
CHECK
Q905
LCD POWER
CONTROL
Q901,902
ROTARY
ENCODER
RE501
KEY ACTIVE
Q914,915
+10V REG
Q903
POWER
CONTROL
Q913,919
BATT
CHECK
Q940
+8V REG
Q904
+8V REG
Q912
CD POWER
CONTROL
Q907,908
ANT POWER
CONTROL
Q924,925
95 COM8V ON
35 CD ON
32
47
48
MD ON
BATT
101
108
RE IN0 106
RE IN1
KEY IN1
KEY IN2
79
NIL
37
NIL
61
IN1
49
IN0
107
ACC IN
111 ANT REM
109 PW ON
D910
BATT
D807
+5V REG
Q909
CD POWER
CONTROL
Q910,911
BATT
BATT
BATT
ACC
D909
BATT
D940
+8V
CD5V
AMP ON
1
2
4
VCC
AMP+B
5 BU+B
AMP+B
ANT+B
MD 8V
BU5V
POWER SUPPLY
IC901
64
63
62
DIM ON 1
DIMMER
CONTROL
Q502,505
LCD501
PL501,502
LED501-505,
LSW511-529
LSW511-529
D-BASS
S501
D919
D918
CNP802
(REMOTE IN)
(REMOTE IN)
KEY MATRIX
LSW511-529
LSW511-529
S502
04
S900
RESET
CDX-4270R
4-4. BLOCK DIAGRAM — DISPLAY SECTION —
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