CONCORD 105 - Trouble Chart (Contd.); Incomplete or no erase.; Runs slow in fast forward position.; Wow or Flutter.

TROUBLE CHART
(CON'T.
}
Symptom Cause
Remedy
Incomplete
or
no erase.
Erase
head(124)is
not
properly
aligned.
Erase
head
(124)
defective.
Defective
erase head
circuit.
Adjust
the
erase head.
Replace
Check circuit
components.
l.
2.
3.
l.
2.
3.
Runs
slow in
fast forward
position.
Fast
forward
roller(21),
takeup
hub
(30),
or rewind
hub
(48)
dirty.
Tape
guide posts
dirty.
Contact
between fast
forward
roller
(21)
and
takeup hub
(30)
or takeup drive
pulley (34)
not
sufficient.
Remove
these
parts,
clean, lub-
ricate,
and
reassemble.
Clean
posts
with
a soft
cloth and
alcohol.
Clean all
contacting surfaces
or
adjust so
they make
proper
con-
tact.
t.
2.
3.
2.
3.
Wow
or Flutter.
Play-record head
(10?),
erase
head
(124),
pressure
pads (126)
and
(129),
or tape
guide
post
(109)
dirty.
Motor
pulley (?9),
drive idler
wheel
(66),
capstan flywheel
(95),
or
pressure
roller
(90)
coated
with
foreign
matter.
Capstan
screw loose.
Rotating
parts
bindi.ng.
Drive
idler
wheel
(66)
or
pres-
sure roller
(90)
has flat spots
formed
on them.
Tape dirty.
2.
3.
4.
5.
6.
l.
2.
3.
4.
5.
6.
1. Clean theseparts
withasoftcloth
and alcohol.
Clean
the
surface
of these
parts
with
a cloth
dampened
with
alco-
hol.
Tighten
screw.
Clean any binding rotating
parts
and
lubricate
Repiace
drive
idler wheel
(66)
or
pressure
roller
(90).
Replace
the
tape.
Motor
(82)
will not run.
l.
2.
Motor
(82)
defective.
Loose
connection.
Replace
motor
(82).
Check motor leads
for
cold
solder
joints.
n
o
z
fl
=o
6=
E,-
tr>
,z
6s
lJr+
o
la
.L
o
l.
2.
Takeup hub
(30)
binds in re-
wind
position.
l.
Coupling is
too
close
between
takeup
drive puJ.ley (34)
and
takeup hub
(30).
l.
See
f
'Takeup
Torque
Adjustment"
No drive
in rewind
position.
Rewind
drive
belt
(49)
broken.
Spring
(120)
broken
or discon-
neeted.
Foreigrr matter
on capstan
fly-
wheel
(95)
and rewind
drive
pulley (i04).
Rewind
drive
pulley
(104)
or
rewind
hub
(48)
binding.
Replace
rewind
drive
belt
(49).
Replace
or
reconnect
spring
(120).
Clean with
alcohol.
4. Lubricate
with sewlng
machine
oil.
1.
2.
3.
l.
2.
3.
4.
MECHANICAL
PARTS
LIST
O
r
g
rn
7
\JI
l3
L4
l5
16
t7
IB
19
20
2L
22
23
24
2n
26
I
2
3
4
5
6
7
8
I
l0
ll
12
A8U25
A87050-A
or
A87050
ABr029-E
A67448
A65199
A85l8r
Head
Cover Rditainer
Screws
Head
Cover Retainer
Clips
Head
Cover Re{ainer
Head
Cover A-L
Fast Forward
Knob
Volume
Control Knob
-
K
Volume
Control
Knob
Reel
Holders
Panel
ttCttWasher
Fast Forward Roller
Shaft
Oil
Case
Oil Fabric Washer
A?005?
4'64951
A64957-B
A48093
A85i8l
A85r82
A6739?
Fast
Forward
Slide RetainingScrew
Lock
Washer
Fast
Forward
Tension
Spring
Fast
Forward
Slide
Belt
Guide
Spacer
Selector
SIide
Washer
Fast
Forward
Roller
-L
Oil Fabric
Washer
Felt
Washer
Lockwasher
Hex Nut
Reel
Spindle
Page
5