Sharp LC-20E1E (serv.man2) Service Manual ▷ View online
19
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No sound
(2/2)
No sound from SCART
SCART sound failure
TV sound failure
Check all the settings microprocessor's adjust process menu.
Is output at pins 36 and
Check IC1901 and its
Is input at pins
53 and
Check theire lines and
Is output at pin 11
Check the tune
r and
37 of IC1901 normal?
No
peripheral parts.
54 of IC1901 normal?
No
theire peripheral parts.
of tuner normal?
No
its peripheral parts.
Yes
Is output at pins 1 and
Check IC1902 and its
Is output at pins
27 and
Check IC1901 and its
Is input at pins 67 and
Check IC19
01 and its
7 of IC1902 normal?
No
peripheral parts.
28 of IC1901 normal?
No
peripheral parts.
69 of IC1901 normal?
No
peripheral parts.
Yes
Yes
19
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No sound
(2/2)
No sound from SCART
SCART sound failure
TV sound failure
Check all the settings microprocessor's adjust process menu.
Is output at pins 36 and
Check IC1901 and its
Is input at pins
53 and
Check theire lines and
Is output at pin 11
Check the tune
r and
37 of IC1901 normal?
No
peripheral parts.
54 of IC1901 normal?
No
theire peripheral parts.
of tuner normal?
No
its peripheral parts.
Yes
Is output at pins 1 and
Check IC1902 and its
Is output at pins
27 and
Check IC1901 and its
Is input at pins 67 and
Check IC19
01 and its
7 of IC1902 normal?
No
peripheral parts.
28 of IC1901 normal?
No
peripheral parts.
69 of IC1901 normal?
No
peripheral parts.
Yes
Yes
19
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No sound
(2/2)
No sound from SCART
SCART sound failure
TV sound failure
Check all the settings microprocessor's adjust process menu.
Is output at pins 36 and
Check IC1901 and its
Is input at pins
53 and
Check theire lines and
Is output at pin 11
Check the tune
r and
37 of IC1901 normal?
No
peripheral parts.
54 of IC1901 normal?
No
theire peripheral parts.
of tuner normal?
No
its peripheral parts.
Yes
Is output at pins 1 and
Check IC1902 and its
Is output at pins
27 and
Check IC1901 and its
Is input at pins 67 and
Check IC19
01 and its
7 of IC1902 normal?
No
peripheral parts.
28 of IC1901 normal?
No
peripheral parts.
69 of IC1901 normal?
No
peripheral parts.
Yes
Yes
19
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No sound
(2/2)
No sound from SCART
SCART sound failure
TV sound failure
Check all the settings microprocessor's adjust process menu.
Is output at pins 36 and
Check IC1901 and its
Is input at pins
53 and
Check theire lines and
Is output at pin 11
Check the tune
r and
37 of IC1901 normal?
No
peripheral parts.
54 of IC1901 normal?
No
theire peripheral parts.
of tuner normal?
No
its peripheral parts.
Yes
Is output at pins 1 and
Check IC1902 and its
Is output at pins
27 and
Check IC1901 and its
Is input at pins 67 and
Check IC19
01 and its
7 of IC1902 normal?
No
peripheral parts.
28 of IC1901 normal?
No
peripheral parts.
69 of IC1901 normal?
No
peripheral parts.
Yes
Yes
