DOWNLOAD Sony CDX-838 Service Manual ↓ Size: 2.9 MB | Pages: 46 in PDF or view online for FREE

Model
CDX-838
Pages
46
Size
2.9 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-838.pdf
Date
PREV: Sony CDX-737 (serv.man2) Service Manual

Sony CDX-838 Service Manual ▷ View online

25
25
CDX-838
7-10. SCHEMATIC  DIAGRAM  – MAIN Board (2/3) –
•
 See page 27 for Waveforms.
•
 See page 31 for IC Block Diagrams.
(Page 24)
(Page 26)
(Page 29)
26
26
CDX-838
7-11. SCHEMATIC  DIAGRAM  – MAIN Board (3/3) –
•
 See page 27 for Waveforms.
•
 See page 31 for IC Block Diagrams.
(Page 24)
(Page 25)
27
27
• Waveforms
– RF Board –
1
IC11 
ed
 (RF O) (CD PLAY)
500 mV/DIV, 500 ns/DIV
2
IC11 
2
 (FEI) (CD PLAY)
50 mV/DIV, 1 
µ
s/DIV
3
IC11 
rj
 (TEI) (CD PLAY)
200 mV/DIV, 500 
µ
s/DIV
1.4 Vp-p
Approx. 
110 mVp-p
Approx. 
280 mVp-p
– MAIN Board (1/3) –
1
IC101 
wj
 (MDP) (CD PLAY)
2
IC101 
eh
 (V16M)
3
IC101 
rl
 (WDCK)
4
IC101 
t;
 (LRCK)
5
IC101 
tf
 (BCKO)
6.8 Vp-p
120 ns
6.6 Vp-p
11.4 
µ
s
6.6 Vp-p
22.7 
µ
s
6.6 Vp-p
472 ns
7
IC101 
u;
 (C4M)
8
IC101 
uf
 (WFCK)
9
IC101 
il
 (XTAI)
q;
IC201 
ea
 (EXTAL)
6
IC101 
ys
 (RFCK)
5.7 Vp-p
137 
µ
s
6.6 Vp-p
236 ns
5.5 Vp-p
137 
µ
s
3.3 Vp-p
59.2 ns
3.2 Vp-p
125 ns
2.5 Vp-p
7.6 
µ
s
– MAIN Board (2/3) –
qa
IC603 
4
qs
IC601 
4
 (XTO)
qd
IC601 
7
 (BCK)
qf
IC601 
9
 (LRCK)
4.7 Vp-p
59.2 ns
6.4 Vp-p
59.2 ns
7.4 Vp-p
472 ns
7.4 Vp-p
22.7 
µ
s
– MAIN Board (3/3) –
qg
IC401 
ql
 (LRCK)
qh
IC401 
qj
 (BCK)
qj
IC401 
qd
 (WDCI)
qk
IC401 
qs
 (LRCI)
ql
IC401 
9
 (BCKI)
wa
IC401 
5
 (C4M)
ws
IC401 
3
, IC501
uj
 (WFCK)
wd
IC403 
1
wf
IC501 
wl
 (EXTAL)
w;
IC401 
7
 (RFCK)
6.2 Vp-p
22.7 
µ
s
6.2 Vp-p
472 ns
7.7 Vp-p
11.4 
µ
s
6.6 Vp-p
22.7 
µ
s
6.6 Vp-p
472 ns
5.7 Vp-p
137 
µ
s
6.6 Vp-p
236 ns
5.5 Vp-p
137 
µ
s
6.6 Vp-p
11.4 
µ
s
3.2 Vp-p
100 ns
28
28
CDX-838
7-12. PRINTED  WIRING  BOARDS  – DIGITAL OUT/JACK Boards –
•
 See page 19 for Circuit Boards Location.
C904
FB901
1
13
CN903
C901
C902
B
MAIN BOARD
CN301
JACK BOARD
(COMPONENT SIDE)
JACK FLEXIBLE BOARD
1-664-796- 
11
1-672-617- 
12
(12)
05
1
4
CN902
C903
FB903
R901
IC901
6
8
3
2
1
7
5
4
5
4
8
7
6
2
1
3
CONTROL
(FOR SONY BUS)
L
R
AUDIO OUT
CN901
JACK BOARD
(CONDUCTOR SIDE)
1-672-617- 
12
(12)
DIGITAL OUT BOARD
(COMPONENT SIDE)
1-672-618- 
12
(12)
4
1
CN801
R801
C801
DIGITAL OUT BOARD
(CONDUCTOR SIDE)
1-672-618- 
12
(12)
1
2
3
4
DIGITAL
OUT
IC801
SW801
ANALOG
DIGITAL
(Page 22)
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