RS-CH770
i
OPERATION
CHECKS
AND
MAIN
COMPONENT
REPLACEMENT
PROCEDURES
1.
This
section
describes
procedures
for
checking
the
operation
of
the
major
printed
circuit
boards
and
replacing
the
main
components.
2.
For
reassembly
after
operation
checks
or
replacement,
reverse
the
respective
procedures.
Special
reassembly
procedures
are
described
only
when
required.
3.
Select
items
from
the
following
index
when
checks
or
replacement
are
required.
4.
illustrated
screws
are
equivalent
to
actual
size.
5.
Refer
the
parts
No.
on
the
page
of
“Main
Component
Replacement
Procedures”,
if
necessary.
e
Contents
*Checking
Procedure
for
each
P.C.B.
Page.
1.
Checking
for
the
main
P.C.B.
and
power
supply
P.C.B..sseeeceeecceecccsccccccccccescsecescvses
ee
34.
2.
Checking
for
the
operation
P.C.B..
Coo
omer
eererererereseesereoesreesereenecseneseseeeeeoer
oe
56,
«Main
Component
Replacement
Procedures
1.
Replacement
for the
cassette
lid
ass'y,
se
eereecereccccsccsescesescccssesceseseeseesesvvcsvoce
7.
2.
Replacement
for the
cassette
holder,
s*eeecercsccsccrvecvereeccccveesesesesesesesesesecesenes
7:
3.
Replacement
for
the
motor
ass’y,
capstan
belt
and
winding
belt.
sesercerreseeccceercesccscscveeeeeee
8.44,
4.
Replacement
for the
plunger
ass’y
and
the
parts
mounted
on
mechanism
P.C.B..
seeececerceeesesccevess
14.42,
5.
Replacement
for
the
head
block
and
pinch
roller
ass’y.sseesecceccesccsvccsscsscessscescsecsceve
se
t2
Mi
Checking
Procedure
for
each
P.C.B.
1.
Checking
for
the
main
P.C.B.
and
power
supply
P.C.B.
Remove
the
top
cabinet.
Cup
@x4
()\
mp
©
(Black)
[RHD30007
-
K1]
(ID
©
Black)
[XTBS3+8JF-Z1]
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