– 25 –
– 27 –
– 26 –
BM-87DST
6-4. SCHEMATIC DIAGRAM (SERVO SECTION)
1
M901
VOLT/DIV : 0.5 V AC
TIME/DIV : 2 msec
2.8Vp-p
3.8 msec
z
Waveform
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.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
supply from external power voltage jack (J103).
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark
: LISTEN
(
)
: REW
<
>
: FF
• 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.
Summary of Contents for BM-87DST Marketing
Page 3: ... 3 SECTION 2 GENERAL This section is extracted from instruction manual ...
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Page 16: ... 16 3 7 MOTOR FWD ASSY M901 3 1 2 Motor FWD ASSY M901 Mechanism deck Cushion M ...
Page 21: ... 21 22 BM 87DST 6 2 BLOCK DIAGRAM Note Signal path E PB a REC ...
Page 31: ... 43 BM 87DST MEMO ...
