AV-27D502
30
No. 51797C
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
Details of detection
Method of detection
State of malfunction
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 immedi-
ately.
At this time, the ON-TIMER LED flashes to inform of the malfunc-
tion.
[ON-TIMER LED indication]
The ON-TIMER LED flashes at 0.5 seconds intervals.
POWER
Supplied
After about
5 seconds
Start of
detection
Malfunction
is detected
POWER OFF
Flashing
ON-TIMER LED
Over-current protector
Operation of B1 protector circuit.
The microcomputer detects at 1
second intervals.
If NG is detected for more than
200 ms, a malfunction is inter-
preted.
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 opera-
tional until the power code is
taken out and put in again.
Содержание AV 27D502
Страница 62: ...AV 27D502 AV 27D502 No 51797 No 51797 TOP FRONT AV SELECTOR PWB PATTERN 2 20 2 19 ...
Страница 63: ...AV 27D502 AV 27D502 No 51797 No 51797 CRT SOCKET PIP TOP FRONT TOP CRT SOCKET AND PIP PWB PATTERNS 2 21 2 22 ...
Страница 84: ...AV 27D502 No 51797 43 ...
Страница 130: ...Troubleshooting 46 ...
Страница 135: ...Specifications 51 Specifications subject to change without notice ...