Service manual

Rev. 1.04
- 34 -
EM 220
Mobile Printer Service Manual
2) Main board BOTTOM wiring diagram
J7J7
Battery Connector
3) Interface Connector and Bluetooth SPI Connector
Interface Connector Bluetooth SPI Connector
Pin No. Function Remark Pin No. Function Remark
1 GND 1 VCC_3.3V
2 TXD (Serial) 2 BT_RST
3 RXD (Serial) 3 SPI_CLK
4 nRTS (Serial) 4 SPI_MOSI
5 nCTS (Serial) 5 SPI_CSB
6 GND 6 SPI_MISO
7 GND 7 GND
8 D+ (USB) 8 GND
9 D- (USB)
10 GND