Sharp Aquos LC-20E1E, Руководство по обслуживанию

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16
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No picture (2/3)
Check all the settings microprocessor
’s adjust process menu.
Is input at pin (74) of IC801 normal?
Check the AV2 line and its peripheral parts.
No
No VIDEO 1 output
Check the SY-line, SC-line and their peripheral parts.
Is input at pin (1) of IC402 and pin (71) of IC801 normal?
No
No S-VIDEO output
Check IC1203 and its peripheral parts.
No No
Yes
Yes Yes
No TELETEXT output
Yes
Is input at pins (2), (5), (11), and (14) of IC1203 normal? Is input at pins (3), (4) and (5) of SC1602 normal?
Is output at pins (1) and (7) of IC1619 and pin (1) of IC1620 normal?
No
Check connection cable
Check the R, G and B line.
No
Check IC1619, IC1620 and their peripheral parts.
Is output at pins (57)~(59) of IC1601 normal?
No
Yes
Check V2VO line and its peripheral parts.
Is input at pin (21) of IC1601 normal?
Check IC1601 and its peripheral parts.