35
XV-Z12000
TROUBLE SHOOTING TABLE
YES
YES
NO
Checking the basic
performance
Is the POWER LED on or
flickering in red or blue?
Go to "Checking the
power unit"
NO
Is the set turned on by the
set’s or remote controller’s
power key?
Go to "Checking the
microcomputer
peripherals" and
"Checking the PC PWB".
NO
Check the formatter
circuit’s peripheral circuits.
NO
Is the cooling fan
running? Is the lamp on?
Is the user menu
displayed?
YES
Are there output signals at
pins (32), (34) and (4) of
P3580?
NO
Is the video input
(INPUT3,4) as specified?
YES
Are there output signals at
every other pin from pins
(51/21),(56/26),(58/28),(60/
30) of P3580?
NO
NO
NO
NO
Is the component input
(INPUT1,2) as specified?
YES
NO
If the RGB input (INPUT5)
as specified?
YES
Are there output signals at
every other pin from pins
(9) to (39) of P3580?
NO
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
Check the IC2505 circuit
and its peripheral circuits.
Check the IC2505 circuit
and its peripheral circuits.
Check the IC2505 circuit
and its peripheral circuits.
END
YES
Go to "Checking the lamp
light-up".
Check the PC board
circuit’s peripheral circuits.
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