Read Sharp 37VT-26H Service Manual online
61
37VT-26H(GY)
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, TU 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, C502, C504,
C511, R513
Abnormal
Check IC501, 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".
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