31
31
SECTION 6
DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
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.
•
f
: internal component.
•
C
: panel designation.
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
no mark : STOP
(
) : Play the test disc (TDYS-1)
<
> : REC
∗
: Can not be measured.
• 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.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E
: PB
j
: REC
p
: PB (DIGITAL)
l
: REC (DIGITAL)
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
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.
• Indication of transistor
C
These are omitted
E
B
Q
C
These are omitted
E
B
WAVEFORMS
– BD (1/2) SECTION –
– MAIN SECTION –
4
5
6
7
8
IC121
qh
(OSCI)
1
2
3.0Vp-p
44.3nsec
3.2Vp-p
22.7
µ
sec
3.8Vp-p
354nsec
3.8Vp-p
88.6nsec
3.2Vp-p
5.67
µ
sec
3.2Vp-p
100nsec
1.7Vp-p
44.3nsec
– BD (2/2) SECTION –
IC121
wj
(LRCK)
IC121
wk
(XBCK)
IC121
wl
(FS256)
IC121
o;
(FS4)
IC701
qd
(XOUT)
IC601
0
(SYSCLK)
1.2Vp-p
1
IC101
ek
RF PLAY MODE
3
IC101
ef
FE
PLAY MODE
2
IC101
wh
TE
PLAY MODE
1
µ
sec/div
approx 400mVp-p
approx 1.5Vp-p
