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SELF CHECK FUNCTIONS
1. Outline
This model has self check functions given below. When an abnormality has been detected, the SUB POWER is turned OFF and the LED
flashes to inform of the failure. An abnormality is detected by the signal input state of the control line connected to the microcomputer.
2. Self check items
Check item
Over-current protection
CRT NECK protection
3. Self check indicating function
When an abnormality has been detected at about 3seconds
after the power is turned on, the SUB POWER is turned off
immediately and the ON TIMER LED flashes.
[ Indication by ON TIMER LED ]
Item
Over-current protection and CRT NECK protection
Details of detection
An over-current on the B1 line is
detected.
Operation of CRT NECK
protection circuit.
At 0.24-second intervals
No. 56091
Method of detection
The
main
microcomputer
detects the possible abnormality
at 20-msecond intervals and
judges the results in every 24
time. Of the 24 times, if NG is
detected more than 13 times, it
is judged that there is an
abnormality
DITTO
After about
3 seconds
Start of
Power on
detection
LED flashing intervals
AV-14AM
State of abnormality
When an abnormality has been
detected, the SUB-POWER is
turned off. While the SUB-
POWER is being turned off, the
power
key
of
the
remote
controller is not operational until
the power plug is taken out and
put in again.
DITTO
Detection of an
abnormality
Flashing ON TIMER LED
SUB-POWER OFF
29
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