Sharp RX-100H Serviceanleitung Seite 32

| RX-1 00H
©
Recording
is
impossible.
Check whether the
drums are rotating
lYes
Check whether the
capstan is rotating.
Yes
Check whether IC301
has been set to record
mode.
Check whether the pin
64 is set to H.
lYes
Check whether the head
amplifier EQ has been
set to record mode.
Check whether the pin 7
of CNS501 is set to H.
Yes
Check whether LR clock
is applied to the pin
3 of BI153 and bit
clock is applied to the
pin 4.
Yes
Check whether the AD
data is applied to
the pin 90 of IC506.
Yes
Check whether digital
muting is applied to
IC506.
Check whether the pin
43 of IC506 is set to H.
Yes
Check whether record
signal is inputted to
the pin 6 of CNS501.
Yes
Check connection of
CNS$901, 952.
—A46—
Proceed to step
(1).
Proceed to step
(2).
Check the pin
15 of IC303.
Check connection
of CNS501.
Check connection
of BI153.
Check the pins 78
and 75 of IC505.
Check connection
of BIT53.
Check the AD PWB.
Check the pin 30
of IC303.
Check connection
of CNS501.
Check the pin 79
of IC506.