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MDS-JE320
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— 26 —
6-2. CIRCUIT BOARDS LOCATION
BD board
MAIN boar
d
CONTROL (SW) board
EJECT SW board
DISPLAY board
SW board
For schematic diagrams.
Note:
• 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 Ω and
1
/
4
W or less unless otherwise
specified.
• % : indicates tolerance.
• ¢ : internal component.
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
( ) : PLAY
< > : REC
• 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.
• Circled numbers refer to waveforms.
• Signal path.
E :PB
q :REC
r :REC(DIGITAL IN)
a :REC(DIGITAL OUT)
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• ® : Through hole.
• ¢ : internal component.
• b : Pattern from the side which enables seeing.
• p : parts mounted on the conductor side.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Note:
The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
Note:
Les composants identifiés par
une marque ! sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
• BD SECTION
1
IC101 1,2 I, J
(PLAY mode)
0.46Vp-p
0.06Vp-p
0.1Vp-p
3.1Vp-p
3.2Vp-p
2
IC101 4 A (PLAY mode)
3
IC101 8,9 E, F
(PLAY mode)
4
IC121 !§
OSCI
5
IC121 @∞
LRCK
22.581MHz
44.1KHz
6
IC121 @§
XBCK
3.8Vp-p
2.822KHz
7
IC121 @¶
FS256
3.8Vp-p
11.29MHz
8
IC121 (º
FS4
3.2Vp-p
176.4KHz
• MAIN SECTION
1
IC316 @¶ (XOUT)
3.2Vp-p
3.3Vp-p
5.2Vp-p
5.6Vp-p
2
IC316 @¢ (XOUT-T)
3
IC307 0 (LRCK1),
@• (LRCK2)
4
IC307 !¡ (BCK1),
@§ (BCK2)
5
IC307 !∞
(MCK1),
@™ (256CK)
2.822MHz
11.29MHz
6
IC307 @∞ (512FS)
3.4Vp-p
22.581MHz
7
IC307 #∞
(XOUT)
5Vp-p
22.58MHz
11.998MHz
2.6Vp-p
32.77kHz
44.1kHz
• Waveform
• PANEL SECTION
1
IC701 %ª (OSC1)
3.9Vp-p
2.4MHz