Sharp DV-RW250H (serv.man5) Service Manual ▷ View online
TROUBLESHOOTING GUIDE
E-31
E-E DOES NOT APPEAR
AT DVD MODE
No
Check VCR block.
Yes
Is there a signal in at pin 17, 19
of CP7301 and at pin 1, 19 of
CP7302 with each input?
No
Yes
Check IC4009.
Is there a signal in at pin
194~201, 203, 205~207
of IC4009 ?
No
Yes
Check IC4001
and peripheral circuit.
Is there a signal in at pin
97, 107, 108, 117 of
IC4001 with each output
mode?
Go to each output mode in no
playback.
TROUBLESHOOTING GUIDE
E-32
E-E AUDIO (MONO)
DOES NOT APPEAR
No
No
Check VCR block.
Yes
Yes
Check IC7301
and peripheral circuit.
Is there a signal in at
pin 26, 27 of IC7301 ?
Is there a signal in at pin 1~15
of CP7301 with each input?
No
Yes
Is there a signal in at pin
4~7,18, 19 of IC7301 ?
Check IC4001
and peripheral circuit.
Go to NO AUDIO ON
PLAYBACK.
TROUBLESHOOTING GUIDE
E-33
NO PLAYBACK PICTURE
OF 21PIN JACK
Check IC4001
and peripheral circuit.
Is there VIDEO signal
at pin 117 of IC4001 ?
No
Yes
Is the waveform at pin
25 of IC8001 ?
25 of IC8001 ?
No
Yes
Check IC8001
and peripheral circuit.
Check J8001
and peripheral circuit.
TROUBLESHOOTING GUIDE
E-34
NO PLAYBACK PICTURE OF
R, G, B JACK
Is there Y signal at pin
97, 107, 108 of IC4001 ?
Yes
No
Check IC8303, IC8004,
IC8005 and peripheral circuit.
Yes
No
Check IC4001
and peripheral circuit.
Is there R, G, B signal
at pin 2 of IC8003,
IC8004, IC8005 ?
Check J8001
and peripheral circuit.
Click on the first or last page to see other DV-RW250H (serv.man5) service manuals if exist.