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4-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
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THIS NOTE IS COMMON FOR WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block)
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4-3. WAVEFORM
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MV-044 BOARD
For printed wiring boards:
• 
: indicates a lead wire mounted on the component side.
• 
: indicates a lead wire mounted on the printed side.
•a : Through hole.
• 
: Patterneclubthaifrom the side which enables seeing. (The other layers’ patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A)the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side B)the parts face are indicated.
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• Abbreviation | |
CA2 | : Canada model |
PX3 | : PX model |
For schematic diagrams:
• All capacitors are in µF unless otherwise noted. pF : µµF. 50V or less are not indicated except for electrolytics and tantalums.
• All resistors are in ohms, 1/4W (Chip resistors : 1/10W)
kΩ = 1000Ω, MΩ = 1000kΩ.
• Caution when replacing chip parts.
New parts must be attached after removal of chip.
Be careful not to heat the minus side of tantalum capacitor, because it is damaged by the heat.
• All variable and adjustable resistors have characteristic curve B, unless otherwise noted.
• |
| : non flammable resistor. |
• | eclubthai: fusible resistor. | |
• |
| : panel designation. |
| ||
• | f | : internal component. |
• |
| : adjustment for repair. |
| ||
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1 IC102 6 (CD PB)
200ns/div
1 IC102 6 (DVD PB)
50ns/div
4IC102 wa (DVD PLAY)
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5IC102 oh (CD PB)
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200nsec
10IC201 172
63.5usec
11IC201 173
63.5usec
15IC201 215 216 (DVD PLAY)
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50ns/div
15IC201 215 216 (CD PLAY)
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200ns/div
MX2 | : Mexico model |
E32 | : Latin model |
BR4 | : Brazil model |
HK2 | : Hong Kong model |
SP6 | : GA model |
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TW1 | : Taiwan model |
KR2 | : Korea model |
EA4 | : Saudi Arabia model |
ME2 | : Middle East model |
ME5 | : India model |
AU2 | : Australia model |
CN6 | : China model |
AR2 | : Argentina model |
U2 | : US modeleclubthai |
IR2 | : Iran model |
• |
| B+ | : B+ Line. |
• |
|
| : B– Line. |
| B– | ||
• | Circled numbers refer to waveforms. | ||
• | Voltages are dc between measurement point. | ||
• | Readings are taken with a | ||
|
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| ence disc and when playing CD reference disc. | ||
•Readings are taken with a digital multimeter (DC 10MΩ).
•Voltage variations may be noted due to normal production tolerances.
Note: |
|
| Note: |
|
The components identi- | Les composants identifiés par | |||
fied by mark | or dotted | une marque | sont critiques | |
line with mark |
| are criti- | pour la sécurité. | |
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| Ne les remplacer que par une | ||
cal for safety. |
|
| ||
Replace only with part | pièce portant | le numéro | ||
number specified. | spécifié. |
| ||
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2 IC102 7 (CD PB)
200ns/div
2 IC102 7 (DVD PB)
5IC102 oh (DVD PLAY)
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100nsec
6IC201 164 C/BAR PB
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12IC201 186
38ns
13 IC201 203 (CD)
1.4V
16 IC207 1 (CD)
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44.24ns
17 IC207 1 (DVD)
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When indicating parts by reference number, please include the board name.
50ns/div
3 IC102 qk (CD PLAY)
63.5us
7IC201 166 C/BAR PB
40.71ns
13 IC201 203 (DVD)
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1.4V
3 IC102 qk (DVD PLAY)
1.4V |
4 IC102 wa (CD PLAY) |
1.4V |
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63.5usec
8IC201 168 C/BAR PB
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1V
63.5usec
9IC201 170 C/BAR PB
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63.5usec
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1.4V
14IC201 205 (CD)
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1.4V
14IC201 205 (DVD)
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1.4V
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WAVEFORM |
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