network 600 - Cassette Alignment; Tape Head and Capstan Cleaning; Tape Head Demagnetization; Head Adjustment

CASSETTE
ALIGNMENT
Tape
head
and
capstan
cleaning
1.
Periodically
clean
the
tape
head,
capstan
drive
shaft
and
other
tape
handling
surfaces
to
insure
|
proper
tape
handling
and
optimum
frequency
response.
2.
Use
a
cotton
swab
lipped
in
head
cleaner
or
denatured
alcohol
to
clean
all
tape
handling
sur-
faces. Wipe dry.
Tape
head
demagnetization
When
servicing
tape
unit,
do
not
use
magnetized
screwdrivers
or
wrenches
near
the
tape
head
since
they
can
magnetize
the
head.
A
magnetized
head
will
result
in
loss
of
high
frequency
response
and
increased
noise.
Head adjustment
Head
adjustment
is
normally
required
when
the
head
is
replaced
or
f
poor
high
frequency
response.
Adjustment and test points
VR654 (L) (x)
Level meter adj.
Dolby level adj
vreo4in)
(X)
®)
Q
VR651~—s
vR601
(L)
(R)-
E
si TA (R)
IC 651
R
T601(R)
19KHz trap adj. Rec. sens. adj.
|
Test}
|
VR653
(L)
VR603
(R)
Cassette PWB
or
cases
of
cross-talk
and
P51
— P53
T602 (R)
Bias trap adj.
T652 (L)
P,56 OC)
P.55 OC)
Bias, current adj.
«) @
VR605(R) VRES5S (uy
T6117
ec. freq. adj.
) | For Service Manuals Contact
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 4QY
Tel:- 01 844-351694 Fax:- 01844-352554
Email:- enquiries@mauritron.co.uk