Trouble Shooting Table - Sharp XV-Z12000 Service Manual

TROUBLE SHOOTING TABLE

Checking the basic
performance
Is the POWER LED on or
flickering in red or blue?
YES
Is the set turned on by the
set's or remote controller's
power key?
YES
Is the cooling fan
running? Is the lamp on?
YES
Is the user menu
displayed?
YES
Is the video input
(INPUT3,4) as specified?
YES
Is the component input
(INPUT1,2) as specified?
YES
If the RGB input (INPUT5)
as specified?
YES
Does the RS-232C
interface function?
YES
Recommended
communication software:
"TERA TERM"
Make the following settings:
baud rate at 9600 bps, bit
length at 8 bits, stop bit at 1
bit and no parity. Press the
RETURN key on the
keyboard. Does "ERR"
show up again?
YES
END
NO
Go to "Checking the
power unit"
NO
Go to "Checking the
microcomputer
peripherals" and
"Checking the PC PWB".
NO
Go to "Checking the lamp
light-up".
NO
Check the formatter
circuit's peripheral circuits.
NO
Are there output signals at
pins (32), (34) and (4) of
P3580?
NO
Are there output signals at
every other pin from pins
(51/21),(56/26),(58/28),(60/
30) of P3580?
NO
Check the PC board
circuit's peripheral circuits.
NO
Are there output signals at
every other pin from pins
(9) to (39) of P3580?
35
NO
Check the IC2505 circuit
and its peripheral circuits.
NO
Check the IC2505 circuit
and its peripheral circuits.
NO
Check the IC2505 circuit
and its peripheral circuits.
XV-Z12000