Sharp RX-100H Serviceanleitung Seite 36

Check whether the
master clock is
applied to IC302.
Check whether 33
Hz is applied to
the pin 34 and 9.4
MHz is applied to
the pin 33.
Yes
Check whether capstan speed
error signal of IC302
is out-putted.
Check whether output of
pin 47 is H.
Yes
Check whether capstan control
voltage is out-
putted from IC301.
Check whether voltage on the
pin 2 of IC301 is approx. 5 V,
Yes
Check whether voltage is
applied to the capstan
motor unit.
Check whether voltage on the
pin 3 of CNS302 is OV.
Yes
Check connection of CNS302.
Check the capstan motor unit.
Check whether playback signal
{slicer output) is applied to the
pin 78 of IC506.
Yes
Check whether LR clock, bit
clock and DA data are applied
to the pins 3, 4, and 5 of BI153,
respectively.
Yes
Check whether bit clock, LR
clock and DA data are applied
to the pins 5, 6, and 7 of
IC166, 167, respectively.
Yes
Check the output pins 9 and 10
of IC166, 167.
Check IC170, 171.
Check the relay for muting.
Check whether Check 28 MHz
28MHzis |; . VCO {Q502,
applied to the IC512) and
pin26ofic.. connection
506. line.
Yes
Check the pins
80 and 11 of IC506.
IC302 is defective.
Check the
peripheral! parts
_of the pin 15 of
IC301.
iC301 is defective.
Check IC306, 0303
and 0304.
Check 1C513, 515.
Check connection of BI153.
Check the pins 78, 75, and 74
of IC505.
Check the connection line of
10163, 165.
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