DOWNLOAD Sony CDX-444RF Service Manual ↓ Size: 6.66 MB | Pages: 69 in PDF or view online for FREE

Model
CDX-444RF
Pages
69
Size
6.66 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-444rf.pdf
Date
PREV: Sony XS-L1535 Service Manual

Sony CDX-444RF Service Manual ▷ View online

29
29
CDX-444RF
6-9.
SCHEMATIC  DIAGRAM  – MAIN (2/2)/SW Boards –
•
 See page 32 for Waveforms.
•
 See page 32 for IC Block Diagrams.
(Page 31)
30
30
CDX-444RF
D301
B-4
D302
C-4
D311
C-4
D312
C-4
D314
A-1
Q301
A-4
Q308
A-2
Q309
A-3
Q310
A-4
Q311
A-4
Q703
D-4
D310
B-3
D313
B-1
D701
D-3
D702
D-2
D703
B-4
IC304
C-4
IC701
E-3
IC781
E-4
Q701
D-3
Q702
D-4
Q781
D-2
Q782
C-2
6-10.
PRINTED  WIRING  BOARDS  – FM Board –
•
 See page 23 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
• Semiconductor
Location
Ref. No.
Location
(Page 26)
31
31
CDX-444RF
6-11.
SCHEMATIC  DIAGRAM  – FM Board –
•
 See page 32 for Waveforms.
•
 See page 32 for IC Block Diagrams.
(Page 29)
32
32
• Waveforms
– RF Board –
1
IC101 
qh
 (RFO) (CD play mode)
2
IC101 
qf
 (FE) (CD play mode)
3
IC101 
qd
 (TE) (CD play mode)
2
IC101 
ia
 (BCK), 
is
 (BCKI)
(CD play mode)
3
IC101 
ih
 (XTAI) (CD play mode)
4
IC101 
wf
 (SCOR),
IC201 
is
 (SCOR) (CD play mode)
5
IC201 
ra
 (EXTAL) (CD play mode)
2
IC781 
1
 (XOUT) (CD play mode)
3
IC781 
qa
 (FMIN) (CD play mode)
1.4 
±
 0.3 
Vp-p
Apporx.
63 mVp-p
Approx.
63 mVp-p
– MAIN Board –
1
IC101 
uj
 (LRCK), 
uk
 (LRCKI)
(CD play mode)
5.7 Vp-p
470 ns
5.6 Vp-p
22.8 
µ
s
4.1 Vp-p
60 ns
5 Vp-p
13.4 ms
4.4 Vp-p
83 ns
– FM Board –
1
IC701 
8
 (38K) (CD play mode)
2.9 Vp-p
139 ns
240 mVp-p
11.3 ns
4.1 Vp-p
26.3 
µ
s
• IC Block Diagrams
– RF Board –
IC101
CXA2596M-T6
1
2
3
4
9
10
11
12
5
6
7
8
23
22
20
18
16
15
14
19
17
13
21
APC LD
AMP
APC PD
AMP
RF SUMMING
AMP
FOCUS ERROR
AMP
RF EQ
AMP
AGC
F I-V AMP
E I-V AMP
COMPARATOR
COMPARATOR
TRACKING
ERROR
AMP
HOLD
AGCVTH
LD
PD
VEE
VEE
VCC
F
E
VC
A
B
C
D
LC/PD
24 VCC
LD ON
AGCCONT
RFTC
RFO
RFE
FE
RF BOT
RF I
TE
HOLD SW
IC201
LA6576L-TE-L
INPUT
FWD
REV
VCC2
VLO–
VLO+
VO4+
VO4–
VO3+
VO3–
VO2+
VO2–
VO1+
VO1–
VCC1
VIN1
VIN1–A
VIN1+A
VIN1–B
S-GND
MUTE2
MUTE1
VIN4
VIN4–
VIN4+
VREF-IN
VIN1 (VREF)-SW
VREF-OUT (CH1)
REG-OUT
REG-IN
VIN3+
VIN3–
VIN3
VIN2+
VIN2–
VIN2
VIN1+B
OUTPUT
CONTROL
+
–
+
–
+
–
+
–
+
–
+
–
LEVEL
SHIFT
CH2-4
MUTE
THERMAL SHUT DOWN
CH1
MUTE
VIN1/VREF
SWITCH
5VREG
3
4
5
6
7
8
9
2
1
LEVEL
SHIFT
LEVEL
SHIFT
10
11
14
LEVEL
SHIFT
AMP-A
AMP-B
+
–
15
16
17
18
23
19
34
35
36
+ 
–
+
–
+ 
–
+
–
25
24
22
21
20
33
32
31
30
29
28
+
–
27
26
12
13
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