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SYMPTOM
Capstan
doesn't
rotate
Wow
& Flutter.
Ree! base doesn't
when reel is
not placed.
Reel base doesn't rotate when
reel is placed.
Brake
doesn't
work.
Motor
noise
Ree!
base
noise.
Defective
tape
counter.
Defective
transmission
machanism,
SYMPTOM
When
switch is turned on, but
pilot lamp doesn't
light.
Pilot lamp lights up but motor
doesn't
rotate.
B-power
voltage
is not applied.
Unable
to record
and
reproduce
(CHei;
GHe2):.
Defective
Winding.
MECHANICAL
TROUBLE
CHART
CAUSE
Motor
trouble.
1. Coil failure.
2. Metal bearing burnt.
3. Foreign
material
between
rotor and stator.
4. Oil adheres to motor pulley or rubber belt.
5. Flywheel shaft burnt or oil shortage.
6. Rubber
belt loosened.
7. Capstan
sleeve
loosened.
8. Motor
pulley loosened.
Defective
motor.
1. Foreign material between
rotor and stator.
Slipping Tranmission
Mechanism.
1. Foreign
material
on flyweel.
2. Foreign material
on rubber
belt.
3. Flywheel
shaft bent or inclined.
Defective
Tape
Transport.
1. Lack of pinch roller pressure.
2. Foreign material on pinch roller or transformation:'
3. Dust adheres
to tape
transport
slot.
Defective
Winding.
1. Defective
rubber
belt.
. Slipping
of pulley, flywheel,
ree! base
pulley.
. Takeup reel base or pulley lacks oil.
. Feed
reel base
lacks oil.
. Rewind
roller doesn't contact reel base or belt.
. Brake folding under.
Poor brake adjustment.
. Select
level
coil spring
broken.
. Foreign material
on RP select switen. |
. Erasing
head
wrong
position.
. Erasing
head
slit dirty.
Weak
pressure
of head
pad.
. Dust adheres to tape guide.
. Rotation
noise.
. Loosened
screw
of motor.
. Brake
shoe
contacts
reel base.
. Wrong
counter
gear.
. Oil adheres
to rubber
belt.
. Loosened
rubber
belt.
ELECTRICAL
TROUBLE
CHART
CAUSE
. Defective
. Blown
or
. Defective
power
cord.
loosened
fuse.
power
switch.
. Defective
power
transformer.
motor.
spring
switch,
starting capacitor.
1
2
3
4
1. Defective
2. Defective
3. Defective
1. Defective
rectifier.
2. Smoothened
circuit failure C106
or C107.
3. Short of B power
supply load.
4. Defective power transformer B winding.
5. Lack of power
supply voltage on AC current,
1 . Defective
amplifier.
|
2. Defective
RP head.
3. Poor contact
between
tape and
RP heads.
4. Switch
($14) failure.
5. SP, Headphone,
Line out jacks failure.
6. Shortage between head and amplifier leads.
REMEDY
Replace.
Lubricate
or replace.
Remove
foreign material
or replace.
Clean with carbon tetrachloride or alcohol.
Lubricate
or repair.
Repair
or replace.
Tighten.
Tighten.
Remove foreign material or replace.
Clean
with carbon
tetrachloride or alcohol.
-ditto-
Replace.
Adiust
pinch roller pressure
to 660-950g.
Clean
wlth carbon
tetrachloride or alcohol.
-ditto-
Clean
(ditto) or replace.
-ditto-
| Lubricate.
| Lubricate.
Adjust rewind
roller
pressure
to 600-600g
Adjust or replace.
Adjust
brake
position
or replace.
Replace.
Clean
with carbon tefrachloride
or alcohol.
Adjust
height or put forward.
Clean
with carbon tetrachloride
or alcohol.
Adjust coil spring
pressure
to 20-25g
or replace
felt.
Clean with carbon tetrachloride
or alcohol.
Lubricate
or replace.
Tighten.
Repair
or replace.
Repair
or replace.
Clean with carbon tetrachloride or aicohoi.
Repair
or replace.
REMEDY
Repair
or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repiace.
Replace.
Replace.
Check voltage of each section.
Replace.
| Check
and adjust.
Check voltage and gain.
Replace.
Replace.
Check tape loading and head contact
section.
Adjust.
Repair
or replace.
Repair or replace.
Repair.
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