Akai M-10

Oxide collected on surface of Clean Head
Lack
of
Treble
Playback
Head
Discrepancy
in
Playback
Head
adi
ri
li
Abiniuth
Aligniient
——
Re-adjust
Azimuth
alignment
Head
worn
out
Replace
Head
No
muting
when
switching
from
Reverse
Play
to
Normal
Play
———_——
Transistor
TR104
or
Mute
Relay
(RL101)
defective
2.
Recording
Mode
:
Does
not
Record
VU
Meter
does
not
operate
Recording
input
signal
level
is
too
low
|
Recording/Playback
Slide
Switch
Readjust
Recording/Playback
not
working
properly
~~
Slide
Switch
Faulty
adjustment
A
VU
Meter
operates
properly
Poteniometer
VR102
Re-adjust
VR102
Transistor
TR103
defective
Replace
Transistor
TR103
)
Bias
Oscillator
Circuit
not
operating
——
Check
Bias
Oscillator
Circuit
h
ay
d
Bias
Head
does
not
move
———_____—_
Chew
of
Bias
Hea
Oxide
Collected
on
surface
of
cl
Head
Recording
Head
canine
i
1
MUM
cron
Operate
Proper
Operation
of
Bias
Oscillator
Check
Bias
Voltage
and
Sound
Distorted
and
Recording
Monitor
rasan
ae
eee
:
pees
Sound
also
normal
Circuit
faulty
Bias
Oscillator
Circuit
Oxide
adhering
to
surface
of
Recording
Head
Clean
Head
Transistor
TR103
defective
———_——_
Replace
transistor
Vv
i
2
;
Lower
level
of
Recordin
Ui
Meicr
operating
properly
Recording
input
signal
level
excessive
—
input
signal
7
but Monitor sound distorted ‘i
Recording input signal distorted
Faulty
Erasure
Does
not
erase
at
all
od
oa
suo
ee
ie
ee
i
bon Head defective ———__———-—_ Rep lace Erase Head
Check Bias Oscillator Circuit
Incomplete
erasure
7
pus
seid
BO
SURE
EON
Sere:
Clean
Erase
Head
Discrepancy in Height adjustment Re-adjust Erase Head height
of
Erase
Head
BY
Demagnetize Head
Erase Noise Excessive aa is magnetized
Tape
itself
defective
Replace
with
new
tape
of
a
good quality
Recording
Level
Low
Dust
adhering
to
surface
of
Recording
Head
—--——-
Clean
Head
Check spacing of Bias Head and Recording Head
as well as Bias Voltage
Faulty
adjustment
of
Potentiometer
VR
102
"
;
of
Record
Amplifier
Re-adjust
Potentiometer
VR102
Tape
itself
defective
Replace
with
new
tape
of
good
quality
,