Sharp DV-RW250H (serv.man5) Service Manual ▷ View online
TROUBLESHOOTING GUIDE
E-11
YES
YES
NO
NO
WHEN PLAYBACK, FF OR REW
MODE IS ACTIVE, UNIT STOPS
IMMEDIATELY
Does CAPSTAN DD
MOTOR rotate?
Refer to section "CAPSTAN
DD MOTOR NOT
ROTAING".
Is there REEL SENSOR
PULSE signal at pin 38
and pin 39 of IC3001.
Check Q3001 and Q3002.
Change IC3001.
TROUBLESHOOTING GUIDE
E-12
YES
YES
YES
YES
YES
NO
NO
NO
NO
AT PLAY, PICTURE JITTERS
HORIZONTALLY
Does a noise on the picture
appear?
By adjusting the MANUAL
TRACKING UP/DOWN
BUTTONS, will the line
disappear?
Check P/B ENVELOPE.
Is a height of GUIDE POST
maximum?
The height of GUIDE POST
readjust.
Is PG SHIFTER
adjustment 6.5H ?
Adjust PG SHIFTER.
Is a wave of PB-Y unusual?
Change IC101
and peripheral circuit.
Change IC101.
TROUBLESHOOTING GUIDE
E-13
YES
YES
YES
YES
NO
NO
NO
NO
AT PLAYBACK, THE PICTUER
DOES NOT APPEAR
Does E-E picture
appear?
Refer to
"AT E-E, NO PICTURE"
Is there video signal
of IC101 at pin 29 ?
Change IC101.
Change IC8005.
Is there video signal
of IC8005 at pin 2 ?
Is there video signal
of IC101 at pin 29 ?
Check J8001.
Change IC101.
TROUBLESHOOTING GUIDE
E-14
YES
NO
AT E-E, NO PICTURE
Is the voltage of IC101 at
P.CON+5V ?
Check POWER BLOCK.
Check J8001.
YES
YES
YES
NO
NO
NO
Is there video signal
of IC101 at pin 26 ?
Change IC101.
Change IC8006.
Is there video signal
of IC8006 at pin 7 ?
Is there video signal of
IC3001 at pin 16, 17 ?
Check IC8006
and peripheral circuit.
YES
NO
Is there video signal
of IC101 at pin 15 ?
Check J8001
and peripheral circuit.
Check J8001.
YES
NO
Is there video signal of
IC3001 at pin 19 ?
Change IC3001.
Check J8005 pin 5
and peripheral circuit.
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