5
4
3
2
1
6
D
C
A
B
D
C
A
B
5
4
3
2
1
6
A-9150
Appendix
The Protection Sequence as below.
[ Voltage Protection ]
The Main MCU watch “VPROTECT” port about each 250uSec. When the MCU count twice this port error,
The MCU will be STANDBY mode.
When the MCU detect Voltage protection, MCU control to “LOW TAP” mode after next power on until speaker relay on
LOW TAP mode means supplied voltage for final device of the power amplifier circuit will be supplied low voltage(About +25v).
[ Current Protection]
The Main MCU watch “IPROTECT” port about each 250uSec. When the MCU count twice this port error,
The MCU will be STANDBY mode.
When the MCU detect Current Protection, MCU control to “LOW TAP” mode after next power on until speaker relay on.
LOW TAP mode means supplied voltage for final device of the power amplifier circuit will be supplied low voltage(About +25v).
Protection