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Sanyo MR-110 Service Manual page 5

Portable ac/dc tape recorder

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(7)
auged
Prequencry
Tape Speed
Overall Frequency
200 c/s
1000 ¢/s
9, 5cm//sec
+1L5~—3
Odb
Cs)
(9)
(10)
SUGGESTIONS
FOR
MECHANICAL
TROUBLE
4, 75cm /sec
(Playback)
+6~-2
(Recording) Power
Input Terminal:
MIC Power Input Level
—86db.
VR
Maximum
Terminal
to
gauge:
EXT
SP (Connect
dummy
resistor) VR Maximum
(8)
Diagram showing the connection
PH
Low frequen
T h
Ly Attenotor
MR119
oscillaior
RECORD
Gg
Maximum
Output
65 mW/over
(Recording)
Power
Input
Level —70db 1000 c/s 9.5cm/sec.
(Playback)
Terminal
to gauge:
EXT
SP
(Connect
dumny
resistor) VR Maximum
Undistorted
Output AC
117V — 650 mW/over
DC
(Recording)
Power
Input Terminal:
MIC
Power
Input Level
-Tldb 1000c/s 9.5 cm/sec.
(Playback)
Terminal
to gauge: EXT
SP(Connect
8Q dummy
resistor) Control
VR
to 10% distortion rating.
Distorting Rating Less than 6%
(Recording)
Power
Input
Terminal:
Level -71 db 1000 c/s 9.5 cm/sec.
(Playback) Terminal to gauge: EXT SP (Connect 8Q dummy
resistor)
Control
WR _ so that it will
be
10 db lower
than
maximum
output.
MIC
Power Input
Trouble
|
Cause
@1)
(12)
PLAYBACK
(3)
RH
MRATO
iH VOTO
|
Terminal:
MIC
Power
Input
(14)
9V - 760 mW/over
(15)
S/N Rating
32 db/over.
(Recording)
Power Input Terminal:
MIC
Power Input Level
~71 db 1000 c/s 9.5 cm/sec.
(Playback) Terminal to gauge: EXT
SP (Connect
8Q dummy
resistor)
Control
VR
so
that
it will be
10 db lower than
maximum
output.
Erasing Rating
60 db/over
(Recording)
power
Input Terminal:
MIC
power Input Level
~61 db 1000c/s 9.5 cm/sec.
(Playback)
Terminal to gauge: EXT
SP (Connect 8Qdummy
resistor)
Control
VR
so
that it will
be
10 db lower
than
maximum
ouiput.
Cross Talk
(Recording)
Power Input Terminal
MIC Power
Input Level
-61 db 1000 c/s 9.5 cm/sec.
(Playback)
Terminal to gauge: EXT
SP (Connect 8Qdummy
resistor) Control
VR
so that it will be 10 db lower than
60 db/over
maximum
output.
Current Consumption
Standard
Voltage ae ait
VR
mininum
In case of AC 40- 70 mA
In case of DC
90-280 mA
Hum Level Noise Level
Below 30 mV (VR MAX)
Below
5 mV
(VR
MIN)
Terminal
to
gauge:
EXT
SP
(connect
dummy
registor),
recording tape not used.
Capstan
fails to rotate
| *Defect of motor
of carbon
brush.
1, Open in motor coil or defective contact
,
1,
2, Burnt metal bearing.
*Defect of Transmission
mechanism.
3. Skidding of motor
pulley.
4, Oil on flat belt rubber.
5, Lack of oil on capstan shaft.
6, Defective
flat belt.
Replace.
|
*If capstan
turns in Rapid
Winding,
or
Rewinding,
but
fails in Recording
or
|
Playback,
the
cause
is the
defecitive
|
contact of Governer.
|
Terminal
resistance of normally opera-
:
ting Governer
at both
ends should
be
0 ohm.
Replace.
3, Tighten the screw.
4, Clean.
*Wipe
with
alcohol or
i
Chloride.
Carbon
Tetra
5, Lubricate
between
oilless
matel
and
shaft.
|
6, Replace.

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