Read Sony CDX-1300 / CDX-3800 / CDX-3900 Service Manual online
13
13
CDX-1300/3800/3900
3-3. BLOCK DIAGRAM — DISPLAY SECTION —
14
60
13
12
11
80
62
38
6
75
76
77
ILL ON
RESET
CKO
SO
KEYIN0
KEYIN1
AVREFO
KEYACK
AD ON
DSTSEL1
61
SIRCS
CE
INH
57 60 62 61
1
2
RESET
KEY
ACTIVE
Q601
LIQUID CRYSTAL
DISPLAY PANEL
LCD800
INH
CE
DI
CLK
LCD
10V REG
Q503,504
5V
REG
D851
04
BU5V
IR
RECEIVER
IC850
LSW801-819
LCD DRIVE
IC800
S600
(RESET)
LSW801-819
IC601
VDD
BATT
SYSTEM CONTROL
IC600 (2/2)
BU5V
PL802
PL801
LCD
BACK
LIGHT
FM200k
AM10k
FM50k
AM9k
S602
FREQUENCY
SELECT
( )
( )
2
(3800/3900)
(3900)
For schematic diagrams
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: AM
J
: CD
For printed wiring boards
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
f
: internal component.
• b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque 0 sont critiques pour la
sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
marque 0 sont critiques pour la
sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
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