MP5S Writer
快速指引手册
SONIX TECHNOLOGY CO., LTD.
Page 14
Version 06
4
4
4
Trouble shooting
4.1
Test Mode
In offline condition, the voltage of the MP5S writer can be measured in test mode. Steps to enter the test mode
are as follows:
Open the upper shell and remove the placed IC;
Hold on “Enter” key, power on the writer, and light the green, yellow and red led in cycle, and meanwhile the
buzzer beeps regularly, and the digital tube displays 0000-9999 in cycle, so that the test mode is entered, please
release the “Enter” key.
Measure VXX/VPP voltage by using calibrated multi-meter, and specific location is as shown in Figure 4-1.
Normal condition: VXX Voltage alternates between 3.3V and 5V; VPP Voltage alternates among 5V, 6.5V, 7.5V
and 12.7V;
It can preliminarily check whether hardware of MP5S is damaged by measuring the voltages of VXX and VPP of
the MP5S in the test mode.
After the measurement is completed, power on again, the MP5S will enter normal operation mode.
