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2020
CDX-GT21W/GT210/GT260/GT260S
CDX-GT21W/GT210/GT260/GT260S
• Waveforms
— MAIN Board —
4-2. BLOCK DIAGRAM — DISPLAY SECTION —
1Vp-p
32.768kHz
1
IC501 ul (XOUT)
3.1Vp-p
18.432MHz
2
IC501 id (OSCOUT)
0.5 V/DIV, 20
µ
sec/DIV
1 V/DIV, 20 nsec/DIV
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF 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
specified.
• f : internal component.
• C : panel designation.
For printed wiring boards.
Note:
• 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 layers' patterns are not indicated.)
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
•Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(): AM/MW/SW
<>: CD PLAY
∗
: Impossible to measure
•Voltages are taken with a VOM (Input impedance 10 MΩ).
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
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.
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Q
C
These are omitted
EB
E
These are omitted
CB
C
These are omitted
BE
KEY ACKNOWLEDGE
SWITCH
Q664
X502
32.768kHz
79
80
40
28
29
27
41
52
76
SYSTEM CONTROL
IC501 (2/2)
DISPLAY CONTROL
IC901
KEYIN1
CL
CE
LCD_SO
LCD_CKO
LCD_CE
64 2
SIRCS OUT
DIMMER
KEYIN0
31
RE-IN0
RE-0
RE-1
32
RE-IN1
KEY ACK
AD_ON
3
AREASEL2
XIN
XOUT
X501
18.432MHz
82
83
OSCOUT
7
NOSE_SW
OSCIN
47
48
46
2
COM4
COM1
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
D503
3
|
34
•
39
35
|
38
|
S1
S33
|
CL
DI
CE
BACK LIGHT
SWITCH
Q932
DIMMER
SWITCH
Q931
LED931
PANEL+B
PANEL+B
GT21W/GT210
()
KEY MATRIX
LSW903–910, S904
LSW901, 902, S901–903
(VOLUME)
PUSH SELECT
RE901
ROTARY
ENCODER
BACK LIGHT
1
LCD BACK
LIGHT
()
LSW901–910
KEY
ILLUMINATE
()
LED861–865,
LED871–874
KEY
ILLUMINATE
S502
FREQUENCY
SELECT
()
BU+3.3V
GT260/GT260S
GT260/GT260S
CN701CN901
10K
9K
1515
PANEL+B
GT260/GT260S
()
LED941–945,
LED951–953
KEY
ILLUMINATE
IR
REMOTE CONTROL
SIGNAL RECEIVER
IC971