5.1.6 DETAILS
Type of errorIndicationDescription of detectionCountermeasure
2
Communication errorI2C MAIN BUSIC communication errors for variousMemorize the number of error times in the main
in video decoder, LCDcontrol devices do happen.memory (up to nine times).
interface etcIC1851 [MAIN PWB]
2
Main memoryI2C ROM BUSIC communication errors for mainMemorize the number of error times in the main
communication errormemory do happen.memory (up to nine times), and turn the power
IC1856 [MAIN PWB]off forcibly.
Light or flash LEDs for self-diagnosis indication.
2
INPUT CARD SLOT-1I2C SLOT1 BUSIC communication errors for variousMemorize the number of error times in the main
communication errorcontrol devices on the optional INPUTmemory (up to nine times).
CARD-1 do happen.
CN1S12 [MAIN PWB]
2
INPUT CARD SLOT-2I2C SLOT2 BUSIC communication errors for variousMemorize the number of error times in the main
communication errorcontrol devices on the optional INPUTmemory (up to nine times).
CARD-2 do happen.
CN1S22 [MAIN PWB]
MAIN POWER UNITPOWER UNITAn alarm signal from MAIN POWERMemorize the number of error times in the main
errorUNIT is continuously detected formemory (up to nine times), and turn the power
about 5 seconds.off forcibly.
IC1851 [MAIN PWB]Light or flash LEDs for self-diagnosis indication.
Cooling fan stopFAN LOCKOne or more cooling fan stops. A stopMemorize the number of error times in the main
signal is continuously detected formemory (up to nine times), and turn the power
about 0.8 second, except for 7 secondsoff forcibly.
after power-on or turning off by theLight or flash LEDs for self-diagnosis indication.
control.
IC6104 [AUDIO PWB]
Temperature rise inTEMP. OVER (90h) A temperature sensor on MAIN PWBFlash "TEMP. OVER" in yellow character on
MAIN PWBdetects an error (threshold : 71°C forthe screen and dim the back light of LCD.
60 seconds).
In addition, the temperatureMemorize the number of error times in the main
continuously exceeds 81°C for 60memory (up to nine times), and turn the power
seconds.off forcibly.
IC1857 [MAIN PWB]Light or flash LEDs for self-diagnosis indication.
Temperature riseTEMP. OVER (92h) A temperature sensor in upper part ofDisplay "TEMP. OVER" in red character on the
around SUB POWERSUB POWER PWB detects an errorscreen.
PWB(threshold : 100°C for 60 seconds).
In addition, the temperatureMemorize the number of error times in the main
continuously exceeds 100°C for 120memory (up to nine times), and turn the power
seconds.off forcibly.
IC8501 [TEMP PWB]Light or flash LEDs for self-diagnosis indication.
5.1.7 INDICATION OF SELF DIAGNOSIS BY USING LED
LED for self-diagnosis indication is located on the upper left of the set (on the right of remote sensor).
? SELF-DIAGNOSIS AND FLASHING LED
Flashing LED
Diagnosis PriorityIndication
TopMiddle Bottom
Communication error in main memory?z?6Notes :
? Indication colour : red
Error in MAIN POWER UNIT?zz5
? Flashing interval : 0.25 second
Abnormal temperature rise around SUB POWER PWBzz?4? When two or more errors are detected at the same time,
Abnormal temperature rise in MAIN PWBz?z3errors are displayed one after another, according to the
order of priority.
Abnormal cooling fan stop??z2
? All LEDs are lighted while various data are written in the
Abnormal writing in main memory???1main memory.
z : Lighting / ? : Flashing
(No.YA347)1-141 |
ACEC
