3838
MZ-N10
Note on Schematic Diagram:
• 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.
•
f
: internal component.
• C : panel designation.
• A : B+ Line.
•Total current is measured with MD installed.
•Power voltage is dc 6 V and fed with regulated dc power
supply from TP1976(+),TP1953(-) on MAIN board.
+side :TP1976(CN952 q;pin)
-side :TP1953(CN952 1pin)
•Voltages and waveforms are dc with respect to ground in
playback mode(servo on).
no mark : PLAYBACK(SERVO ON)
∗
: 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.
J : PLAYBACK
c : DIGITAL IN
F : ANALOG IN
f : RECORD
N : USB
• The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
form that of conventional IC.
6-2. Note for Printed Wiring Board and Schematic Diagrams
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : 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
(Side B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
• MAIN board is four-layer printed board.
However, the patterns of layers 2 and 3 have not been
included in this diagrams.
•Waveforms
surface
1
IC801 2 (OSCO)
(at the point of R806)
44.3ns
4
IC501 rd (TE)(SL501)
500mV/DIV, 1ms/DIV
7
IC901 yd (CLK)
2
IC801 <z,/ (UOSCO)
(USB VBUS=5V)
(at the point of R823)
5
IC501 rs (FE)(SL502)
8
IC862 8 (OSCOUT)
30.5
µ
s
3
IC501 9 (RFO)(TP1529)
500mV/DIV, 200ns/DIV
6
IC601 qk (CLK)
1V/DIV, 2
µ
s/DIV
5.67
µ
s
9
IC301 9 (MCLK)
1.6Vp-p
910mVp-p
1.1Vp-p
1.3Vp-p
2.4Vp-p
2.6Vp-p
1V/DIV, 40ns/DIV
88.6ns
0
IC301 8 (BCLK)(REC)
1V/DIV, 100ns/DIV
354ns
qa
IC301 q; (LRCK)(REC)
22.7
µ
s
2.5Vp-p
2.5Vp-p
1V/DIV, 10
µ
s/DIV
20.8ns
3.2Vp-p
1V/DIV, 2
µ
s/DIV
5.67
µ
s
2.4Vp-p
500mV/DIV, 1ms/DIV
240mVp-p
500mV/DIV, 20ns/DIV
500mV/DIV, 10
µ
s/DIV1V/DIV, 10ns/DIV
* Replacement of IC501,IC801 on MAIN board requires a
special tool.
* Replacement of IC501,IC801 on MAIN board requires a
special tool.
• Lead Layouts
Lead layout of conventional IC CSP (chip size package)
✩When IC851 is damaged, replace the MAIN board.
Ver 1.2 2003.02
Note:
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
