MDS-JE320
— 25 —
— 26 —
6-2. CIRCUIT BOARDS LOCATION
BD board
MAIN board
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 M
Ω
).
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
Содержание MDSJE320 - MiniDisc Recorder
Страница 29: ...MDS JE320 39 40 6 9 Schematic Diagram Main Section 3 3 See page 49 for IC Block Diagram PAGE 44 ...
Страница 31: ...MDS JE320 43 44 6 11 Schematic Diagram DISPLAY Section See page 26 for Waveforms PAGE 39 ...
Страница 33: ...MDS JE320 47 48 6 13 Schematic Diagram Switch Section Page 31 16 ...