JVC LT-42FX77, Руководство по обслуживанию

Страница: 21 / 106

(No.YA564<Rev.001>)1-21
5.1.6 DETAILS
Self check is performed for the following items: (---- is not used Items)
< Page 1 of screen >
< Page 2 of screen >
5.1.7 METHOD OF DISPLAY WHEN A RASTER IS NOT OUTPUT
In the state where a raster is not output by breakdown of the set, an error is displayed by blink of the POWER LED.
< Explanation of operation >
If error is detected, the power is turned off.
Shortly after a power is turned off, POWER LED will be blinked.
Power cannot be turned on until the power cord takes out and inserts, after a power is turned off.
Detection item Display Detection content
Diagnosis
signal (line)
Detection timing
Low bias line short
protection LOB Confirm the operation of the low bais (5V / 12V /
24V) protection circuit.
IC9401 , Q9401 , Q9601 , Q9801 [DC-DC PWB]
LB_PRO Detection starts 3 seconds after
the power is turned on. If error
continues between 200 ms the
power is turned off.
---- FAN ---- ---- ----
---- AUD ---- ---- ----
Devices on the ANALOG
PWB ANA Confirmation of reply of ACK signal which uses
I
2
C communication.
IC101 , IC102 , IC381 , IC551 , IC601 , IC606 ,
IC661 , IC3501 , TU3001 [ANALOG PWB]
SDA If it checks whenever I
2
C
communication is performed and
no reply of ACK signal an error
will be counted.
Devices on the DIGITAL
PWB DIG Confirmation of reply of ACK signal which uses
I
2
C communication.
IC5001 [DIGITAL PWB]
SDA If it checks whenever I
2
C
communication is performed and
no reply of ACK signal an error
will be counted.
Detection item Display Detection content
Diagnosis
signal (line)
Detection timing
---- TMP ---- ---- ----
---- L1 ---- ---- ----
---- L2 ---- ---- ----
---- DDT ---- ---- ----
---- FAN ---- ---- ----
---- LC ---- ---- ----
---- IRS ---- ---- ----
Type of error POWER LED flash cycle
Low bias line short protection Blue turnig on and off at 1 second intervals.