JVC AV-32220/G Service Manual page 29

SELF CHECK FUNCTIONS
1. Outline
This model has self check functions given below. When a malfunction has been detected, the POWER is turned off and the LED flashes to
inform of the failure . The malfunction is detected by the signal input state of the control line connected to the microcomputer.
2. Self check items
Check item
Over-current protection
(HAZARD)
3. Self check indicating function
The self-check function begins detection about 5 seconds after
power is supplied.
In the event a malfunction is detected, the power is cut off
immediately.
At this time, the ON-TIMER LED flashes to inform of the
malfunction.
[ON-TIMER LED indication]
The ON-TIMER LED flashes at 0.5 seconds intervals.
Details of detection
Operation of B1 protector The microcomputer detects at 1
circuit. second intervals.
If NG is detected for more than 1
ms, a malfunction is interpreted.
No. 51782
Method of detection
POWER After about
Supplied 5 seconds
Start of
detection
AV-32220
State of malfunction
When a malfunction has been
detected, the POWER is turned
off. While the POWER is being
turned off , the power key of the
remote controller is not operational
until the power code is taken out
and put in again.
Malfunction
is detected
POWER OFF
Flashing
ON-TIMER LED
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