MDS-NT1
•Waveforms
– BD Board –
Note on Schematic Diagram:
•All capacitors are in ∝ F unless otherwise noted. pF: ∝∝ F 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: The components identified by mark 0or dotted line with mark 0are critical for safety.
Replace only with part number specified.
Note on Printed Wiring Boards:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•f : internal component.
•
: 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 |
(Conductor Side) | the pattern face are indicated. |
Parts face side: | Parts on the parts face side seen from |
(Component Side) | the parts face are indicated. |
|
|
1IC101 ek (RF) (PLAY mode)
1.4
5IC201 ef (LRCK) (PLAY mode)
4.5 |
qd IC505 4 (LRCK) (PLAY mode)
4 |
•A: B+ Line.
•B: B– Line.
•Power voltage is dc 9V and fed with regulated dc power supply from external power voltage jack.
•Voltages and waveforms are dc with respect to ground under
22.7 ns | 22.7 ns |
no mark : PLAYBACK
( ) : STOP
∗: Impossible to measure
•Voltages are taken with a VOM (Input impedance 10 MΩ ). Voltage variations may be noted due to normal produc- tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc- tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
E : PLAY
l: REC
2 IC101 ef (FE) (PLAY mode) | 6 IC201 eg (XBCK) (PLAY mode) |
approx | 4.6 |
460 |
qf IC505 2 (BICK) (PLAY mode)
3.6 |
354 ns | 354 ns |
| – MAIN Board – |
3 IC101 wh (TE) (PLAY mode) | qa IC301 qa (XOUT) |
approx
620
qg IC505 1 (MCLK)
3
4.2 |
100 ns | 88 ns |
4 IC201 w; (OSCO) | qs IC901 5 (DSPCLK) |
2.6
4.2 |
qh IC400 7 (EXT)
9.1 |
11 ns | 88 ns |
15.8 ∝ s |
38 38
