CDX-GT130/GT180/GT230/GT280/GT280S/GT282S
CDX-GT130/GT180/GT230/GT280/GT280S/GT282S
16
16
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• no mark : FM
( ) : AM/MW/SW
< > : CD PLAY
• Voltages are taken with VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
:
CD
PLAY
F
:
FM
f
:
AM/MW/SW
L
: AUX
For schematic diagrams:
Note:
• All capacitors are in
μ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
speci
fi
ed.
•
f
:
internal
component.
•
C
: panel designation.
4-2. BLOCK DIAGRAM – DISPLAY SECTION –
For Printed Wiring Boards.
Note:
•
X
: Parts extracted from the component side.
•
a
:
Through
hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Waveforms
– MAIN Board –
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
Note:
The components identi-
fi
ed by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number speci
fi
ed.
Note:
Les composants identi
fi
és
par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spéci
fi
é.
• Indication of transistor.
C
B
These are omitted.
E
Q
X502
32.768kHz
10
11
94
1
2
100
95
SYSTEM CONTROL
IC501 (2/2)
LCD DRIVE
IC901
KEYIN1
CL
CE
LCD_SO
LCD_CKO
LCD_CE
DIMMER
KEYIN0
92 KEYACK1
82 RE-IN0
RE-0
RE-1
81 RE-IN1
XOUT
XIN
X501
11.06MHz
15
13 OSCOUT
3 NOSE_SW
OSCIN
47
48
46
2
COM1
I
COM4
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
3
|
34
•
39
35
|
38
S1
I
S48
DI
DIMMER
SWITCH
Q931
LED931
PANEL+B
(
)
KEY MATRIX
LSW901–914,
S901
(VOLUME)
PUSH SELECT
RE901
ROTARY
ENCODER
BACK LIGHT
1
LCD
BACK LIGHT
SWITCH
Q932
LCD BACK
LIGHT
(
)
LED941,944,951–953,
982,1951,1952,
LSW901–914
KEY
ILLUMINATE
4 SIRCS
REMOTE
CONTROL
SIGNAL
RECEIVER
IC971
42 RC IN1
91 KEYACK
97 RC IN0
BU+3.3V
S502
FREQUENCY
SELECTOR
10k
9k
J561
(REMOTE IN)
70 AREASEL2
GT180/GT280/GT280S/GT282S
GT230/GT280/GT280S/GT282S
GT280/GT280S/GT282S
0.04 Vp-p
4MHz
0.8 Vp-p
32.768 kHz
0.05 V/DIV, 0.5
μ
sec/DIV
0.5 V/DIV, 20
μ
sec/DIV
IC1
RI
(XTAL 1)
IC501
(XIN)
1.7 Vp-p
11.06MHz
0.5 V/DIV, 0.1
μ
sec/DIV
IC501
RH
(OSCIN)
