CDX-GT21W/GT210/GT260/GT260S
4-2. BLOCK DIAGRAM — DISPLAY SECTION —
SYSTEM CONTROL | DISPLAY CONTROL |
IC501 (2/2) | IC901 |
•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.)
KEY MATRIX |
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| 40 KEYIN1 |
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| 3 |
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| S1 |
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| LCD_SO | 28 | 48 DI | LCD901 |
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LSW901, 902, |
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| 41 KEYIN0 |
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| LCD_CKO 29 | 47 CL | 34 | LIQUID |
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| S33 | • |
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| D503 |
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| LCD_CE 27 | 46 CE |
| 39 | CRYSTAL |
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| COM4 35 | DISPLAY |
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| KEY ACKNOWLEDGE |
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| BACKLIGHT | PANEL |
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| DIMMER |
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| SWITCH | 52 KEY ACK |
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| COM1 38 |
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| Q664 |
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RE901 |
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PUSH SELECT |
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| 76 AD_ON |
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(VOLUME) |
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| 1 | 2 |
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ROTARY |
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| PANEL+B |
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| LED931 |
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ENCODER |
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| 32 |
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| BU+3.3V |
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| KEY | |
| 10K |
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| (ILLUMINATE ) |
S502 |
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( FREQUENCYSELECT | ) |
| 3 | AREASEL2 |
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| 9K |
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| DIMMER |
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GT260/GT260S |
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| SWITCH |
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| Q931 |
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| X502 | 79 XOUT |
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| 32.768kHz | 80 XIN |
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| BACK LIGHT |
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| SWITCH | PANEL+B | GT21W/GT210 |
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| 82 OSCIN |
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| X501 |
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| GT260/GT260S |
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| 18.432MHz |
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| 83 OSCOUT |
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| REMOTE CONTROL |
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| SIGNAL RECEIVER |
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| CN901 | CN701 |
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| IC971 |
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15 | 15 | 7 | NOSE_SW SIRCS 64 | 2 OUT | IR |
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PANEL+B | GT260/GT260S |
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| KEY |
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For schematic diagrams.
Note:
•All capacitors are in ∝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 specified.
•f : internal component.
•C : panel designation.
Note: | Note: |
The components identi- | Les composants identifiés par |
fied by mark 0 or dotted | une marque 0 sont critiques |
line with mark 0 are criti- | pour la sécurité. |
cal for safety. | Ne les remplacer que par une |
Replace only with part | piéce portant le numéro |
number specified. | spécifié. |
•A : B+ Line.
•B : B– Line.
•H : adjustment for repair.
•Voltages and waveforms are dc with respect to ground under
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
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.)
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) |
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| B E |
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B E C
These are omitted
E C B
These are omitted
• Waveforms
— MAIN Board —
1IC501 ul (XOUT)
2IC501 id (OSCOUT)
32.768kHz
18.432MHz
0.5 V/DIV, 20 ∝sec/DIV
1 V/DIV, 20 nsec/DIV
20 20