Akai 1700

SECTION
“B”
TROUBLES
WITH
TAPE
TRANSPORT
MECHANISM.
Gapstan does not rotate. Troubles with motor |._———|Broken field coil. Gheck field coll with tester, and replace aotor if coil is broken. |
/ Defective motor starting capacitor C19. Replace C19.
|_{Rotor shaft dragging due to lack of oil. | | Overhaui motor. Clean and re-lubricate oilite netal. |
‘Sone foreign natter exists between rotor and stator. Gheck and elinnate foreign satter for free rotation of rotor. |
Troubles. with. power: tranempeion Broken capstan drive belt. Replace belt.
mechanism. od
Capstan drive belt off of driving position. Place belt in position.
[Motor bushing slipping on motor shaft: Tighten mounting screw.
if Oil attached to motor bushing and/or flywheel. |-—{ Wipe off oil with cotton swab soaked in alcohol.
3
1 Decreased motor torque. p-————-—— Check motor torque and replace motor.
Sa eae ee? hon switened -7-[ Troubles with motor. Defective cig, }—| Replace 19.
to Play position. Ly Motor bushing slipping on motor shaft. Tighten mounting screw.
Troubles with power transmission Gapstan drive belt stretched up. Replace belt.
mechanism.
Oil attached to motor bushing and/or flywheel. | {Wipe off oil
Capstan bushing silping on flywheel shaft. |_—{Tighten capstan mounting screw.
Excessive tension in Takeup/Supply reel table assenbly. |[ Readjust_ tension.
|_{oitattacnea to capstan and/or pinch wheel Wipe of oil
\_JTasufficient pinch wheel pressure. Oheck and re-adjust pinch wheel pressure.
Capatan advances tape, but take-up ree Reel shaft dragging due to lack of oil. }—|Gneck take-up reel shaft assembly.
does not. :take up tape: Take-up idler wheel does not rotate properly. |——{Check idler wheel. Replace if necessary.
Oil attached to idler wheel and/or ro-
—[Wire off oi
ler on take-up reel shaft assembly.
‘Take-up idler wheel does not keep good contact. [ Check idler tension spring Replace spring if necessary.
Check lever “G.”
[Take-up
functions
normally,
but
tape
7
Troubles
with
moto
Rotor
shaft
dragging
due
to
lack
of
oil.
Overhaul
motor,
Clean
and
re-lubricate
oilite
metal.
|
speed
tower
than.
regular
speed.
L
Defective
motor
starting
capacitor(C30)
Replace
C30.
Fluctuation
in
power
supply. Cheok
line
voltage
and
oycle.
Use
voltage
regulator
if
line
voltage
is
lover
than
standard.
Troubles
with
power
transmission
Capstan
dive
belt
stretched
up
and
slipping
on
aotor
bushing
|
{Replace
belt.
mechanism:
[ae
‘rive
belt
notin
correct
driving
position
Place belt
in
position,
\_Soitattached
to
motor
bushing
and/or
flywheel.
|
{Wipe
off
oil.
[Wow- flutter.
Irregular
tape
movement.
Troubles
with
motor.
[Decreased
motor
torque.
}———[onec.
motor
torque.
|
\_Metective
moter
starting
capacitor
(G30).
Replace
C30.
eee
©
powers
atameene
‘Take-up,
supply
reel
shaft
dragging
or
excessive
tension
eecaENL
tt
teseieetaot
aac
sn
mace
ren
iebatt
|_{cepstan
drive
belt
stretched
up
and
slipping
Check
belt.
XH
Unbalanced
flywheel
rotation.
[Check
balance.
Replace
flywheci.
|
Rubber
on pinch
wheel
deteriorated.
Check
rubber
on pinch wheel
and
replace
pinch
wheel.
{Pinch
wheel
or
tape
guide
does
not
rotate
snoothly.
Sere
Sean
iui
Eadirecon
Dust
on
heads.
Clean heads.
Insufficient
pinch
wheel
pressure.
Re-adjust
pinch
wheel
pressure,
Gapstan
bushing
slipping
on
flywheel
shaft
|_—[Tighten
capstan
mounting
screw.
Worn-out
idler
wheel
or
no
oil.
Replace
vor-out
idler.
Lubricate
oilite
netal
in
center
of
idler.
Unit
does
not
operate
in
Past
Forward)
(7212
reel
shaft
does
not
rotate
even}—J
Troubles
with
power
Oil
attached
to
take-up
idler
whe!
or
eotor|__
Wipe
off
oil.
nude
without
placing
recording
tape
on
unit.
transpission
nechanisa.
io
bushing
Loose motor bushing. Tighten motor bushing mounting screw.
‘Take-up
idler
wheel
does
not
function
properly.
{Check
and
readjust
idler
wheel.
|
“Take-up reel shaft asdeably does not function Gheck, clean and re-oll reel shaft
properly. assembly.
Check lever “G".
sekee ee Check motor torque. Replace mo-
tor if required.
Decreased motor torque.
Defective motor starting capacitor] {Check and replace O30.
(C30) :
Excessive slippage of clutch mate-
Troubles with power | Trial (felt) in take-up reel shaft Check take-up reel shaft assembly,
transmission mechanism.
assembly.
Take-up reel shaft does not rotate when
recording
tape
is
placed
on
unit.
Troubles
with
motor.
L_____frrage guide roller does not rotate sacottiy. |_| Check guide roller Re-Oil or replace]
‘Take-reel warped and sticking to
deck top panel.
Defective
reel.
Check
and
replace
reel.