21
21
CDX-R3300EE
3-4. BLOCK DIAGRAM — DISPLA
Y
SECTION —
S900-908,
910-922
KEY ACK
SWITCH
Q501
REMOTE
RECEIVER
IC971
X501
32.768kHz
15
16
12
13
95
72
74
73
94
27
25
20
96
83
SYSTEM CONTROL
IC500 (3/3)
LCD DRIVER
IC901
KEYIN0
DATA
CLK
CE
LCDSO
LCDCKO
LCDCE
KEYIN1
KEYACK
ADON
RCIN1
RCIN0
SIRCS
XIN
XOUT
OSCOUT
OSCIN
7
RETRA_SW
X500
27.648MHz
63
64
62
COM4
COM1
LCD
LCD901
PANEL +B
PANEL +B
LED902-908,
910-922
LED931,932
(LCD BACK LIGHT)
D501
J561
(REMOTE IN)
51
|
54
3
|
50
|
SEG3
SEG50
|
DI
CL
CE
1
DIMMER
PANEL +B
KEY
ILLUMINATION
()
PANEL +B
D963
D962
LED961
(DISC IND)
S961
OPEN
KEY MATRIX
3
3
4
LCD DRIVE
CONTROL
IC981
4
LED
DRIVER
Q901
DIMMER ON/OFF
SWITCH
Q902
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS
AND SCHEMA
TIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
•
All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
•
All resistors are in
1
and
1
/
4
W or less unless otherwise
specified.
•%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
Power voltage is dc 14.4V and fed with regulated dc power
supply from
ACC and BA
TT
cords.
•V
oltages are taken with a VOM (Input impedance 10 M
1
).
V
oltage variations may be noted due to normal produc-
tion tolerances.
•W
aveforms are taken with a oscilloscope.
V
oltage variations may be noted due to normal produc-
tion tolerances.
•
Circled numbers refer to waveforms.
•
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.
•
: Pattern from the side which enables seeing.
(The other layer
’s patterns are not indicated.)
Note:
The components identified by mark
0
or dotted line
with mark
0
are critical for safety
.
Replace only with part number specified.
Caution:
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)
parts face are indicated.
32.768kHz
IC500
qh
(XOUT)
— Main Board —
2
27.648MHz
IC500
qs
(OSCOUT)
2.8Vp-p
2.6Vp-p
1
• W
aveforms
— Servo Board —
(MODE: CD PLA
Y)
IC3
whwk
(A, C)
3
0V
Approx.
150mVp-p
16.9344MHz
IC3
uj
(XT
AO)
0V
2
Approx. 100mVp-p
IC3
wd
(FEI)
1
Approx. 100mVp-p
IC3
wa
(TEI)
IC3
wjwl
(B, D)
4
6
2Vp-p
IC3
ra
(RF
ACO)
5
18.43MHz
IC4
ia
(X1)
7
1Vp-p
Approx.
150mVp-p
Approx.
0.8Vp-p
