User manual

A direct connection to the power supply of a car battery is prohibited, since the voltage may vary
significantly. Also here a proper stabilization to 5 and 12V is required.
The power supply can be connected either via JP1 or the remaining pins of JP7, see connector layout
below.
Please not: The PCB does not have a protection against wrong polarity or over voltage. Wrong polarity
or overvoltage will result in a fatal damage to the main PCB and the display.
Connector Layout:
Pin Function Pin Function
1 Nc 1a Nc
2 RxD 2a Nc
3 TxD 3a Nc
4 Nc 4a Nc
5 GND 5a nc
JP2: RS232 (Please not different pin numbering!)
Pin Function Pin Function
20 GND 19 VCC
18 KEY1 17 KEY0
16 KEY3 15 KEY2
14 KEY5 13 KEY4
12 KEY7 11 KEY6
10 9 LCD_D6
8 LCD_D5 7 LCD_D4
6 LCD_E 5 LCD_R/-W
4 LCD_RS 3
2 1 IR_IRQ2
JP3: Front PCB/LCD-Interface
Pin Function Pin Function
1 +5V 2 +5V
3 +5V 4 +5V
5 +12V 6 +12V
7 GND 8 GND
9 GND 10 GND
11 GND 12 GND
13 GND 14 Kopfhörer L
15 GND 16 Kopfhörer R
17 GND 18 Line Out L
19 GND 20 Line Out R
JP7: Audio Out / Power supply
Pin Function
1 LED A
2 LED K
JP4: HD activity