Sharp XV-Z1A, Руководство по обслуживанию

Страница: 38 / 65

TROUBLE SHOOTING TABLE
(Continued)
38
XV-Z1E/A
No image
Yes
Is lamp on?
Yes
No
Is voltage aplied to connector EA?
Refer to the troubleshooting of the
lamp/ballast unit.
No
Lamp fails to light up.
Yes
No
Are there signal at pins (1), (12) and
(19) of VS connector? Check input terminal circuit and its
parts.
Yes
Yes No
No
Are there H-SYNC puls at pins (5),
(6), of IC801? Check peripheral circuit of IC602 and
its parts.
Yes
No
Are there RGB signal at pins (31),
(32) and (33) of IC801? Are there Y-signal inputs at pin (39),
C-signal input at pin (20) of IC801?
Check peripheral circuit
of IC803, IC814. Check peripheral circuit
of IC408, IC401~IC410.
Yes
No
Are there RGB signal at pins (5), (7)
and (9) of CC connector? Check peripheral scan convertor
circuit.
Yes
No
Are there RGB signal at pins (9), (10)
and (11) of IC4028?
Check peripheral double scan circuit.
Yes
No
Are there RGB signal at pin (5) of
IC4001, R signal at pin (5) of IC4002,
B signal at pin (5) of IC4003?
Check peripheral circuit of IC4028,
IC4029, IC4030 and IC4031.
Yes
No
Are there palus signal at pins (3)~(8)
of LCD panel?
Check the LCD terminals' waveforms
and connection with LCD panel.
Check the LCD terminals' waveforms
and connection with LCD panel.