Product Repair Guideline CITAQ V8

CITAQ V8 Parameter Parameter CPU Rk3188，1.8GHZ RAM 1GB FLASH 4GB iNand Flash SD card TF card, Max 32G Display 8” with resolution 1024*768 Touch screen 8” multi-touch capacity screen ports 3 USB, 1 RS232, 1 RJ11, 1 Lan 3G WCDMA WiFi 802.11 b/g/n 网络接口 LAN，100Mb/s Indicator Two color (Orange and Blue)

CITAQ V8 Parameter Parameter Speaker Dual track 2W Battery 3.7V/2000mAh Power input 12V/1.5A 24V/2.5A OS Android 4.4.4 Printer Mechanism CAPM 347 Service life 200KM Print Speed 200mm/s Cutter Half / Full cut Life of Cutter 2 Million times Width 80mm，Biggest diameter 80mm Printer sensor Short of paper, out of paper, cover opened Peripherals Flash driver with FAT32 format。USB scanner, mouse, keyboard, Cash drawer

1.CITAQ V8 Disassembly

Press the cover button and lift the screen to open the cover 1.1 Appearance---Front 1：8’’ touch screen（Capacity） 2：Indicator 3： V8 cover 4：Side USB port 1 4 2 3 Press the cover button and lift the screen to open the cover

1.1Appearance---Back 1 4 5 2 3 1：Power Switch 2：Lan Port 3：Rear USBX2, RS232 x 1 4：Adaptor port 5：Cash drawer port 1 4 5 2 3

1.1 Internal view 4 2 3 1 5 1：Printer mechanism 2：Mechanism 3、4：Paper feeder rolls X4 5：SIM、TF card slot 2 3 1 5

1.2 Host unit disassembly 1.2.1 Disassembly of Plastic Base 1、Take out screws marked 2、Turn the switch to a balance position 3、 Take out the plastic base from bottom to upwards 1 3

1.2 Host unit disassembly 1.2.2 Disassemble the screen 1、Unscrew all screws marked in pic 2、Lift the metel piece and you will see the connect cable of the mainboard with printer board. 1 2

1.2 Host Unit Disassembly 1.2.3 Disassemble the Screen cables 1、Pry the breaches pic showed by a small – type screwdriver 2、Lift the cover 3、Unscrew the screws pic marked and take out the metal piece covered with the cables. The 3G module is movable at the same time 1 Cable for 3G module 2 3G 3

1.2 Host Unit Disassembly 1.2.4 Disassemble the base metal cover 1、Unscrew the marked screws and push the cover upwards 2、Will see the printer board after opening cover 1 2

1.2 Host Unit Disassembly 1.2.5 Disassemble the printer board 1、Pull out all cables on board and remove screws to take out the printer board. Switch Cable USB Connect cable Sensor Screen signal cable Printer Head Printer mechanism cable

1.2 Host Unit Disassembly 1.2.6 Disassemble the plastic frame 1、Unscrew the marked screws and open the cover 2、Disassemble the frame from metal host then pull out the sensor cable from the hole. Sensor cable

1.2 Host Unit Disassembly 1.2.2 Disassemble the sensor 1、Unscrew the marked screws to take sensor apart. ）Sensor signal receiver( it should be black) Sensor transmitter(it should be transparent)

1.2 Host Unit Disassembly 1.2.6 Disassemble the printer mechanism 1、Cut the marked plastic wire 2、Unscrew the marked screws then slowly pull out the connect cable Connect cable 3、Pull out connect cable 4、Unscrew the marked screws and push downwards to take out printer cover lifter 打印头塑料翻盖提手

1.2 Host Unit Disassembly 1.2.7 Disassemble the printer mechanism 1、Take out the connector from cable slot, then remove the screws to take out printer mechanism and ground cable Ground Cable cable slot and printer mechanism connector Plastic base for printer mechanism

1.3 Host Unit Disassembly 1.3.1 Disassemble screen back WIFI Antenna 3G Antenna 3G Antenna cable WIFI Antenna cable 1、Unscrew the marked screws to take out this cover 3G port Touch screen cable Speaker cable LCD Cable Indicator connect cable Speaker cable Battery Cable Battery Indicator board Speaker

1.3 Host Unit Disassembly 1.3.2 Disassemble Main board 1、Pull out WIFI cable 2、Push out the marked buckle and push out touch screen cable 1 3、Push out the marked buckle and push out LCD cable 8 2 4、Pull out Speaker cable 7 5、Pull out battery cable 3 6 6、Pull out indicator cable 4 5 7、Pull out speaker cable 8、Remove marked screws to take out the main board

1.3 Disassembly of Screen 1.3.3 Disassemble speaker, battery, indicator, Wifi antenna and 3G antenna 屏幕上端 1、Tear the wifi circuit and ground sticker 1 2 2、Draw out 3G antenna circuit 3、Slowly pull the edge of battery to take it out 屏幕下端 4 and 5、Unscrew marked screws to disassemble speaker 3 6、Unscrew 3 marked screws to take out indicator board 5 4 6

1.3 Disassembly of Screen 1.3.4 Disassemble metal fixture of screen 1、Remove marked screws to disassemble the metal fixture Pls protect the cable between touch screen and LCD when disassembling

1.3 Disassembly of Screen 1.3.5 Disassemble LCD Panel 1、First to pull up the edge of LCD as pic marked. Then subsequently pull up the buckles from 1,2,3 point to disassemble LCD panel 1 3 2 Pls protect the cable between touch screen and LCD when disassembling

1.3 Disassembly of Screen 1.3.6 Disassemble touch screen 1、Firstly heat up the edges which marked in pic 1 by a thermal blower.. Stop until it turns a little hot 2、Gently push the touch screen towards the side without cables 3、Carefully pull out the cable from the hole after separating the touch screen and frame 3 1 2 Pls protect the cable between touch screen and LCD when disassembling

2.CITAQ V8 FAQ

V8 FAQ and solution 1、Eliminate the black screen when turning on Try to replace LCD panel and see if the device starts. If it were still black screen then pls replace main board 2、Eliminate the problem of printing blank： Check if the mechanism connector looses or printer board connector looses. If problem still exists then replace printer board 3、Eliminate the printing malfunction： The beeper keeps beeping after loading paper, then the printer board must be replaced 4、Eliminate the problem of no 3G signal： Make sure if the sim card is with allowance. Change the sim card first. If the problem still exists, try to change 3G module. If it still doesn’t work, then change the mainboard. 5、Unable to connect to internet by LAN： Restart the device. If problem exists, change the printer board. 6、无法跳电磁阀故障排除： Check if there is paper inside. If problem exists, then need to change printer board.

V8 FAQ and solution 7、Fault resolution of USB port no response:       Restarting device if still no response, then it requires changing printer board. 8、Fault resolution of screen too bright:       Connecting external LCD panel, if still the same, then it requires changing        main board 9、Fault resolution of buzzing after install printing paper roll, or "beep, beep, beep":       The printer board should be changed.