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    Function Description    X735          
     
 

  
 
 
Power Jack, power input and power output
Select momentary power button or latching power switch
  Power input  5Vdc +/- 5% , 2.5~4A
  DC Power Plug Size  5.5*2.5mm
  Micro USB power socket  Pin 1 - 5Vdc, Pin 5 - GND
Power input / output connector  XH2.54mm 2pin

 1. X735 powers the Raspberry Pi via the 40-pin header (Pin 2 & 4)
 2. Don't power the Raspberry Pi via the Pi's Micro USB socket
 3. X735 can be powered via the onboard DC jack
or Micro USB
    power socket or XH2.54 connector.
Selector Switch
 pressed
 Latching switch enabled, Momentary
 button disabled 
Selector Switch
released
 Latching switch disabled, Momentary
 button enabled

Power adapter must be disconnected when selecting momentary button or latching switch.
 
 
Connectors for External Power Switch
Using momentary power button
Pin No. Pin Description
1  Power on/off control connecting to switch
2  Ground
3  Ground
4  LED+ for power on, rebooting and shutdown

 Connector - Pitch 2.0mm 4pos
Press and Release  Raspberry Pi and X735 turn on
 Power LED stays on
Press and hold for 1~2 seconds  System rebooting 
 Power LED Blinks rapidly
Press and hold for 3~7 seconds  System shutting down 
 Power LED Blinks slowly
Press and hold for >8 seconds  Force shutdown

*S
cript for power control installed
 
 
Using latching power switch
Pins and GPIO used
Switch pressed  Raspberry Pi and X735 turning on
 The PWR LED stays on
Switch released
(Script for power
 control installed)
 System shutting down and the PWR LED
 blinking slowly
Switch released
(Script for power
control not installed)
 The PWR LED stays on and will force
 shutdown after 8 seconds

The onboard latching power switch should not be pressed when using an external latching switch
Pin No. Usage
2, 4  +5V power supply
6  Ground 
7  GPIO4 for power management
11  GPIO17 for power management 
12  GPIO18 for power management
     
 
     
    Board Assembly
     
 
Push a screws (M2.5*6mm) up through the mounting hole on the underside of the Raspberry Pi.
 
Screw the spacer (M2.5*12mm) down until it is hand tight
 
     
Plugs the X735 board straight into your Raspberry Pi B+'s GPIO header and screw down (M2.5*6mm)
 
Optional -To use with X820/X850/X822/X852/X860/X870
 a) Unscrew 4 screws on the topside of Raspberry pi
 b) Screw the M/F spacer (M2.5*12 / M2.5*20) down until it is
     hand tight
 
     
Plugs the X735 straight into your Raspberry Pi's GPIO header and screw down (M2.5*6mm)
 
Connect the 2-pin power connection wire from the 5V connector on X735 to X820/X850/X822/X852/X860/X870

Power adapter must be connected to power management     board only , not X860 and Raspberry Pi
 
     
 
 
       
 
     
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