Sony CDX-MP450X Service Manual ▷ View online
37
37
CDX-MP450X
3-15. PRINTED WIRING BOARD — RELAY SECTION —
(Page 38)
(Page 33)
38
38
CDX-MP450X
3-16. PRINTED WIRING BOARD — DISPLAY SECTION —
(Page 37)
• Semiconductor Location
Ref. No.
Location
(D901)
A-10
(D902)
A-11
(D904)
A-9
(D905)
A-10
(IC901)
B-9
Ref. No.
Location
(
) : SIDE B
IC951
A-5
LED910
A-5
LED911
B-5
LED912
B-13
LED913
B-13
39
39
CDX-MP450X
3-17. SCHEMATIC DIAGRAM — DISPLAY SECTION —
Note:
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
no mark : FM
(Page 36)
40
40
CDX-MP450X
• IC Block Diagrams.
IC511 CXA2570N-T4
IC401 LC75374E
IC512 LA6556
3
EQ IN
4
AC SUM
5
GND
24 RFDCI
23 RFDCO
20 VFC
22 VC
19 BST
18 RFG
17 VCC
16 TE
15 FEI
14 FE
13 RFAC
21 RFC
6
A
7
B
8
C
9
D
12
SW
10
E
11
F
AC
SUM
APC
DC
SUM
EQ
AC
VCA
2
1
PD
LD
VC
VC
VC
VC
VC
VCC
VCC
RW/ROM
RW/ROM
RW/ROM
RW/ROM
RW/ROM
RW/ROM
RW/ROM
(H/L)
1
36
FWD
2
REV
3
VCC2
4
VL0–
5
VL0+
6
VO4+
7
VO4–
8
VO3+
9
VO3–
S-GND
35 MUTE2
34 MUTE1
33 VIN4
31 VIN4+
30 VREF-IN
29 VIN1 (VREF)-SW
28 VREF-OUT (CH1)
10
VO2+
27 REG-OUT
11
VO2–
26 REG-IN
12
VO1+
13
VO1–
14
VCC1
15
VIN1
16
VIN1–A
17
VIN1+A
18
VIN1–B
25 VIN3+
24 VIN3–
23 VIN3
32 VIN4–
INPUT
OUTPUT
CONTROL
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
+
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
+
–
AMP-A
AMP-B
VIN1/VREF SW
MUTE1
MUTE2
CH2-CH4 OUTPUT
ON/OFF
CH1 OUTPUT
ON/OFF
GND
5V REG
+
–
–
+
–
22 VIN2+
21 VIN2–
20 VIN2
19 VIN1 +B
+
–
–
+
–
+
–
–
+
–
–
+
–
–
+
–
+
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
–
+
–
–
+
–
+
–
DECODER
LATCH
SHIFT
REGISTER
CONTROL
–
+
+
–
–
1
2
3 4
5
6 7 8
9 10
20
19
18
17
16
15
14
13
12
11
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
43
44
LSELO
L4
L3
L3
L2
L1
VDD
R1
R2
R3
R4
R4
RSELO
RVRIN
RCOM
RT1
RT2
RT3
RTOUT
RSIN
NC
NC
RSB1
RSB2
RFIN
RFOUT
RROUT
VSS
CL
DI
CE
VREF
LROUT
LFOUT
LFIN
LSB2
LSB1
NC
NC
LSIN
LTOUT
LT3
LT2
LT1
LCOM
LVRIN
Click on the first or last page to see other CDX-MP450X service manuals if exist.