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TROUBLE SHOOTING FLOWCHART (Continued)
CIRCUITS TO BE CHECKED:
Sound Detector Circuit.
Sound Switch and Att.
Control.
Audio Output Circuit.
CIRCUIT TO BE CHECKED:
Sync. Separator Circuit.
NO SOUND
Does signal appear at pins
(6) of IC303 ?
Check Speaker.
NEITHER VERTICAL NOR
HORIZONTAL SYNCHRONIZATION
Check pins(5), (6), (10) and
(11) of IC801.
DEFECTIVE VERTICAL AMP.
AND VERTICAL LINEARITY
Re-adjust vertical size.
(Bus Data)
Vertical linearity and size are
abnormal.
Check R503, R506, R513,
R520 and C515.
NO VERTICAL SCAN
Check IC501 bias.
Check C511.
5 – 2
21JF2-RU/GA/SA/SF/SS
Check TV sound from pin (51)
of IC801 to pin (6) of IC303.
Check IC501.
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