– 85 –
– 86 –
– 88 –
– 87 –
ZS-M50
Ref. No.
Location
r
Semiconductor
Location
D101
E-4
D181
C-9
D183
C-9
IC101
E-13
IC103
B-13
IC121
D-11
IC122
C-5
IC123
D-10
IC124
E-11
IC152
B-11
IC171
E-9
IC181
D-9
IC192
F-7
Q101
C-13
Q102
B-14
Q103
B-13
Q104
B-13
Q162
B-13
Q163
B-14
Q180
C-7
Q181
C-9
Q182
C-9
Note on Printed Wiring Boards:
Note:
•
X
: parts extracted from the component side.
•
®
: Through hole.
•
b
: 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 the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
Note on Schematic Diagram:
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
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.
•
%
: indicates tolerance.
Note: The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
•
A
: B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : MD STOP
(
) : MD PLAY
<
> : MD REC
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
E
: MD PLAY
q
: MD REC
J
: CD
6-17. SCHEMATIC DIAGRAM – BD SECTION –
r
Refer to page 91 for IC Block Diagram.
VOLT/DIV : 1 V AC
TIME/DIV : 10
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 2
µ
sec
r
Waveforms – BD Section –
1
IC101
1
,
2
I, J
PLAY MODE
VOLT/DIV : 0.2 V AC
TIME/DIV : 0.5
µ
sec
2
IC101
#•
RF
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.5
µ
sec
4
IC101
8
,
9
E, F
VOLT/DIV : 20 mV AC
TIME/DIV : 1
µ
sec
5
IC121
!¶
OSCO
VOLT/DIV : 0.2 V AC
TIME/DIV : 50 nsec
7
IC121
@§
XBCK
VOLT/DIV : 1 V AC
TIME/DIV : 0.1
µ
sec
8
IC121
@¶
FS256
VOLT/DIV : 0.5 V AC
TIME/DIV : 50 nsec
3
IC101
4
A
VOLT/DIV : 20 mV AC
TIME/DIV : 1
µ
sec
6
IC121
@∞
LRCK
9
IC121
(º
FS4
PLAY MODE
PLAY MODE
PLAY MODE
0.46 Vp-p
1.3 Vp-p
0.1 Vp-p
60 mVp-p
1.0 Vp-p
22.581MHz
3.3 Vp-p
23.05
µ
sec
3.5 Vp-p
0.36
µ
sec
2.2 Vp-p
90 nsec
3.2 Vp-p
5.6
µ
sec
