Sharp VT-G14 - Page 65

65
VT-G14
VT-G21
FLOWCHART NO. 2-6
NO VERTICAL SCAN
NO
NO
NO
YES
Vertical freq check
FLOWCHART NO. 2-7
NO SOUND
Does waveform appear
at pin (8) of IC301 ?
YES
Does waveform appear
at pin (3) of IC351 ?
Check IC301, IF Circuit
and adjacent parts.
Check IC351 and
adjacent parts.
Check pin (29) of IC801
and adjacent parts.
NO
YES
FLOWCHART NO. 2-8
NO PLAYBACK PICTURE
Is there a signal at pin (1)
of IC801 ?
Check IC801 and
adjacent parts as same
as "NO PICTURE".
Check the VCR:
TROUBLE SHOOTING
"NO PLAYBACK".
YES
Does waveform appear
at pin (8) of IC351 ?
Check the speaker.
Normal
Pin (53) of IC801
Abnormal
IC801 pin (54) bias
check.
Normal
IC801
Abnormal
IC501 bias check.
Normal
D501~D504, C503, C504,
C511, R513
Abnormal
Check the connectors
F5, F6 and adjacent
parts.
NO
YES
FLOWCHART NO. 2-9
NO PLAYBACK SOUND
Is there a signal at pin (28)
of IC801 ?
Check the TV:
TROUBLE SHOOTING
"NO SOUND".
Check the VCR:
TROUBLE SHOOTING
"NO SOUND".