Sharp VC-M29GM Serviceanleitung Seite 16

FLOWCHARTNO.8CASSETTECONTROLTROUBLESHOOTING(I)
Is the cassette housing distroted?
NO
Does the start sensor cover go to
open when the cassette tape is
inserted?
YES
Does pin (87) of IC701 change trom
"H" to "L" level when the cassette
tape is inserted?
YES
Does pin (5) of 107701 go to a "H"
(about 0.7V) level when the
cassette tape is inserted?
YES
Does pin (2) of IC7701 change to
about I OVwhen the cassette tape
is inserted?
YES
Is the specified voltage applied at
the loading motor terminal when
the casette tape js inserted?
YES
Replace loading motor.
A cassette tape is not take in.
YES
Fix or replace the cassette housing
NO
NO
Check start sensor and all the way
up thru to pin (87) of IC701.
NO Check line between pin (8) of IC701
and all the Way up thru to pin (5) of
IC7701.
NO
NO
Check
way thru to loading motor.
Check start sensor cover.
Check IC7701
between IC7701 and atl the
FLOWCHART NO.9CASSE
A cassette tape is
Does the start sensor pulse at
pin (87) of IC701 change from
"L" to "H" level when the cassette
tape is loaded?
YES
Does the end sensor pulse at
pjn (88) of IC701 change from
"L" to a "H" levet when the
cassette tape is loaded?
YES
Does the master cam mode shifter
operate normally when the cassette
tape is loaded?
YES
Replace IC701.
NO
NO
NO