No image (1)
YES
NO
No video image on INPUT1
Has "INPUT1" been selected on the Input
Select screen?
Select INPUT1 CVBS on the Input Select
screen.
YES
NO
Is the video signal applied to pin (1) of
IC1301 (AV switch)?
Check lines and devices between pin (20) of
SC1101 (INPUT1) and pin (1) of IC1301.
YES
NO
Select INPUT2 CVBS on the Input Select
screen.
YES
YES
(A) (B)
YES
NO
Is the video signal applied to pin (8) of
IC1301 (AV switch)?
Check lines and devices between pin (20) of
INPUT2 (SC1102 1/2) and pin (8) of IC1301.
NO video image on INPUT2
Has "INPUT2" been selected on the Input
Select screen?
<When video signal is received>
No image (2)
YES
NO
NO video image on INPUT3
Has "INPUT3" been selected on the Input
Select screen?
Select INPUT3 CVBS on the Input Select
screen.
YES
NO
Is the video signal applied to pin (15) of
IC1301 (AV switch)?
Check lines and devices between pin (20) of
INPUT3 (SC1102 1/2) and pin (15) of IC1301.
YES
NO
Select INPUT4 CVBS on the Input Select
screen.
YES
YES
(C) (D)
YES
NO
Is the video signal applied to pin (22) of
IC1301 (AV switch)?
Check lines and devices between pin (3) of
J2404 (INPUT4) and pin (22) of IC1301.
NO video image on INPUT4
Has "INPUT4" been selected on the Input
Select screen?
<When video signal is received>
No image (3)
YES
NO
No Y/C image on INPUT2
Has "INPUT2" been selected on the Input
Select screen?
Select INPUT2 Y/C on the Input Select
screen.
YES
NO
Is the Y/C signal applied to pins (10) and
(12) of IC1301 (AV switch)?
Check lines and devices between pins (20),
(15) of SC1101 (INPUT1) and pins (10), (12) of
IC1301.
YES
NO
Select INPUT3 Y/C on the Input Select
screen.
YES
YES
(E) (F)
YES
NO
Is the Y/C signal applied to pins (17) and
(19) of IC1301 (AV switch)?
Check lines and devices between pins (20),
(15) of INPUT2 (SC1102 1/2) and pins (17),
(19) of IC1301.
No Y/C image on INPUT3
Has "INPUT3" been selected on the Input
Select screen?
<When Y/C signal is received>
No image (4)
YES
NO
No Y/C image on INPUT4
Has "INPUT4" been selected on the Input
Select screen?
Select INPUT4 Y/C on the Input Select
screen.
YES
NO
Is the Y/C signal applied to pins (24) and
(26) of IC1301 (AV switch)?
Check lines and devices between pins (3), (4) of
J2401 (INPUT1) and pins (24), (26) of IC1301.
YES
(G)
<When Y/C signal is received>
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