Akai M8

SECTION “B” TROUBLES WITH TAPE TRANSPORT MECHANISH.
Unit does not revina tape Supply (rewind) reel shaft does not rotate Troables with power trana- Oil attached to rewind idler or mo- ai
even without placing recording tape on anit. aission mechanism tor bushing. ipe off oi
Tatermediate idler(black bakelite
Check int
wheel) not working correctly. dnternal..idler;
Loose motor bushing. Tighten aotor desting mounting scres.
Rewind idler does not rotate or not|
Check rewind idler. Clean and re-Gil.
in position.
Supply
reel
shaft
assembly
does
not
Check
supply
reei
shaft
assembly.
otate
smoothly.
Clean
and
re-oil-
Supply
(rewind)
reel
shaft
does
not
rotate
Check
motor
torque.
Replace
aotcr
when
tape
is
placed
on
anit
Troubles
vith
motor.
Doctoased
‘motor’
torque:
lif
not
repairable.
LfDetective gotor starting capacitor(C30)..-{Replece CxO.
Excessive slippage of clutch mate-
rial (felt) in supply reel shaft assembly.
Tape
guide
roUer
dces
act
rotate.
Check
guide
roller.
Re-oil
or
repiaca,
|
Supply (rewind) reel warped and stick- _
Defective reel. i poly ( ; a Check and rep..cm real.
ing to deck top panel.
Trouble sith power trans-
mission mechanism.
Check supply reel shaft assembly.
Locse
tape
vinding
after
peii¢
Decreased
back
tension
of
take-up
and
babe
in
Rewind
or
Fastforward
ie
ci
Giana
mode. sesonbuss.
Tape spills when stopped froa
Rewind or Fast forward node,
Disassemble reel shaft assemdues and strengthen back tension.
Lenn
Readjust slippage of felt clutch matenal.
Replace defective reel shaft assenbiy if this
readjustment is difficult
Excassive
slippage
of
felt
Clutch
material
in
take-up
and
fewnd
reel
shaft
assemblies.
Always use reels of same size on both sides.
Check and replace brake shoes.
Reels of different size are used. For example, 5° reel on
taxe-up side and 7° reel on supply side.
Worn-out drake shoes.
ou attached to surface of brake shoes.
Looe drake shoes.
Brake lever does not function properly.
Were cut and rugged idler
Break does not function properly.
Wipe off oii with cotton swab soaked in alcohol.
rere
Tighten brake shoes mounting screw.
Check and re-adjust brake lever.
Check idler wheel
Tighten mounting screw.
———
Periuical clack noise when
rewinding or fast forvarding tape.
Loud motor vibration.
Loose motor mounting screw.
Defective motor starting capacitor (C30).
=
Loose oil cover mounting screw. Tighten mountiog ecrew.
; iay-
ane solgenmaee ROY Deposit of dust on heads. Clean heads.
reenact
Replace recording tape.
Excessive heat on
=
head
surface
after
continued
operat-
Check
tape
head.
c)
Old and worn-out recording tape.
Inferior recording tape.
i ing device
Aatosatic.
stopping
Automatic
stop
lever
moves
Broken
plate-shaped
spring
Check
spring.
does not function. normally.
Broken eccentne gear. (Black bakelite gear.) Check eccentric gear.
Recording tape ts being charged with static electricity.
Inspect recerding tape.
Use recording tape of good quality.
Nail on eccentric gear broken off. Check nail on eccentric gear.
Holding plate for eccentric gear defective. Check if eccentric gear stickicg tc holding piste.
Check guide groove on deck sud-piate and acunting screra,
Defective instant stop lever. Check instant stop mechanism.
Check mounting screw.
Or oe ap ae aa as aoe tal era aaa |
Bent NU-PLAY s¥itcn fe-setuing seve g F VEECA leew,
Automatic stop lever does not
Move or sticky.
Check lever spmng.
Brokea lever spring or lever spriog cot in position.
Automatic
stop
lever
sticks
to
rear
deck
p.
re
Check
rear
side
of
deck
sub-piate.
Clean and re-lubricate lever shatt.
No lubricant on lever shaft. or dust on shaft
2 itch does
Eysie: canes: awites No lubncant on cycle conversion lever. Relubncate lever.
not more.
Eccentric or bent cycia caaversion lever. Check cycle conversion iever.
Capstan drive belt not on driving track of flywheel. Check capstan cnve belt
Loose motor dDughiny. Tighter sourting screw.
aaa iae|
Oil on motor bushing or on flywheel. Wine off oi with cottoa swad soaked in aichoil.