12
First issue 09 /03
Detection in protection mode
The structure of three detections was prepared.
a. Opening of a Rear case is detected by mechanical switch.
b. Simple logic via a connector.
c. It is necessary to control IC by I2C from MAIN microcomputer.
Detection of B and C is for not operating SLOT independently.
Protection mode
When operation of abnormalities is detected, the MAIN microcomputer memorizes a history to E2PROM (MAIN). And it will change to
protection mode.
Light Emitting Diode blinks as follows at the time of protection mode.
Even if you are going to supply AC again, it goes into protection mode again by the history memorized by E2PROM.
Release in protection mode
A procedure is shown below.
1. Pushing INPUT of BODY-KEY is continued 5 seconds or more.
2. Light Emitting Diode changes to lighting of the red that shows a standby state from blink in protection mode.
3. You have to push the following keys in order within 5 seconds from red lighting.
VOL - -> INPUT -> VOL+ -> POWER ON
CAUTION
:
PDP will return to protection mode again, when release is impossible within 5 seconds and a mistake is made in pushing body-key.
Red
200 ms
Blank 1100 ms
Blank 100 ms
Green
200 ms
