Jadever JWE, Service Manual

Page 1: ...JWE Series Service Manual ...

Page 2: ...5 6 7 8 8 8 4 Adjustments and Settings 4 1 Model setting 4 2 Calibration 4 3 Initialization 4 4 Resolution setting 4 5 AD COUNT Value display and keyboard testing 4 6 RTC setting 4 7 Setting Mode Description of Parameter Values 12 12 13 13 14 14 14 5 Trouble shootings 5 1 Preliminary checks 5 2 Problems and solutions 5 3 Troubleshooting and Error Message 15 15 16 6 Parts replacement 6 1 Load cell ...

Page 3: ...JADEVER SCALE CO LTD JWE service manual 1 1 Assembly Drawing 1 1 Explosive view ...

Page 4: ... board 1 JWE 8 80 0136 1000XM 9 LOAD CELL 1 JWE 9 10 Aluminum alloy support 2 JWE 10 10 0406 0000XM 11 Lower cover 1 JWE 11 02 0000 1510XM 12 Adjusting foot 4 JWE 12 01 0100 0006 13 Rechargeable battery 1 JWE 13 61 0201 0100XM 14 Battery cover 1 JWE 14 02 0000 1530XM 15 Battery protection screw 1 16 Power switch 1 JWE 16 60 0000 0000XM 17 Power socket 1 JWE 17 60 0503 0001XM 18 Transformer 1 JWE 1...

Page 5: ...JADEVER SCALE CO LTD JWE service manual 3 2 Electronic Construction 2 1 PCB board wiring 2 2 Wiring configuration ...

Page 6: ...MG10 14 SEMG11 15 SEMG12 16 SEMG13 17 LCD1 R10 2 2k C CP15 0 1u G R24 10k C 1 2 CAL R29 4 7K R27 10k C COM1 1 COM2 2 COM3 3 COM4 4 SEGM1 5 SEGM2 6 NO 7 NO 8 NO 9 SEGM6 10 SEGM7 11 SEGM8 12 SEGM9 13 SEGM10 14 SEGM11 15 SEGM12 16 SEGM13 17 SEGM14 18 SEGM15 19 SEGM16 20 SEGM17 21 SEGM18 22 SEGM19 23 SEGM20 24 LCD4 1 2 CN3 Battery IN 1 OUT 3 GND 2 U6 LM2931 R46 1K C R16 1K C C43 R42 220Ω C 3 1 2 Q7 2S...

Page 7: ...WE service manual 5 3 RS 232 Communication 3 1 RS 232 circuit diagram 3 2 Single option 3 2 1 Scale to Printer Scale to BP545D TDP printer Scale to SH 24 TP printer Universal 25 pin male to 9 pin male RS 232 connecting cable ...

Page 8: ...al 25 pin male to 9 pin male RS 232 connecting cable 3 2 2 Scale to PC 1 Get receiving program ready on your computer 2 Please set the print mode as Prt Co the scale will output the data to the PC continuously Commonly used 9 female 25male RS232 connecting wire Note The hollow dots represent male connectors and the black dots represent female connector ...

Page 9: ...t tower Picture The light tower should be connected to the 25 pin male socket Light tower to scale Picture That is commonly used 25pin port male 25 pin port female RS232 connecting wire Note The hollow dots represent the male connectors while the black dots represenst female connectors ...

Page 10: ...Light tower Picture Note the hole dots represents the male connectors while the black dots represent the female connectors 3 2 5 Scale to Printer and light tower Scale to PC and ZEBRA GODEX EZ B P545D TDP Picture 3 3 RS 232 Output Format Baud Rate 2400 4800 9600 Data Bit 8 Parity N None ...

Page 11: ...II Bit Format LSB MSB 0 1 2 3 4 5 6 7 8 Start Bit Parity Stop Bit Data Format 1 Kg G N T W k g CR LF weight eg T W 1 000 kg N W 1 000 kg G W 2 000 kg 2 g G N T W g CR LF Weight eg T W 0 0 g N W 1000 0 g G W 1000 0 g 3 lb G N T W l b CR LF Weight eg T W 2 2050 lb ...

Page 12: ... W 4 4100 lb 4 台斤 G N T W G t l T C R LF Weight eg T W 1 10 7G tl T N W 1 10 7G tl T G W 3 5 3G tl T 5 港斤 G N T W G t l H C R LF Weight eg T W 1 10 5G tl H N W 1 10 5G tl H G W 3 4 9G tl H 6 斤 G N T W C J i n CR LF Weight eg T W 2 0000 C Jing N W 1 9998 C Jing ...

Page 13: ...CO LTD JWE service manual 11 G W 3 9998 C Jing 7 lb oz G N T W l b CR LF Weight eg T W 0 lb 0 000 OZ N W 2 lb 3 280 OZ G W 2 lb 3 270 OZ 8 pcs T o t a l p c s CR LF pcs eg Total 645 pcs 9 C R L F eg 24 G GROSS N NET ...

Page 14: ...e at regular intervals Temperature changes geographic gravity variations altitude changes and abuse are few reasons why a scale may need recalibration 2 Here we take JWE 3K as an example Single Point Calibration 1 Press and hold key MODE while powering on the scale The screen displays CAL then release the keys 2 Press key TARE to enter the zero point calibration mode 3 Press key MODE to select cal...

Page 15: ...ut weight of full load on and press TARE E g for JWE 3K full load is 3kg 6 The calibration procedure ends up with a symbol of PASS 7 Remove all the weights and then press key ZERO to return to weighing mode 4 3 Initialization 1 Press and hold key TARE and ZERO while powering on the scale The screen will display SET 2 Press key MODE and the screen will display FACT 3 Press and hold key M MR and TAR...

Page 16: ... the scale After the self test is finished the screen displays nothing 2 Release MC SET and the screen displays the time 3 Press MODE to switch between date and time 4 Press TARE to move the digit place 5 Press ZERO to change the details 6 Press MC SET to exit 4 7 Setting Mode Description of Parameter Values Setting Mode 1 Long press key MODE while powering on the scale to enter setting mode The s...

Page 17: ...ut 60 minutes 6 Set the activation mode of backlight Options are lit Aut Auto on with items greater than 9d placed on the weighing pan lit ON Backlight on and lit OFF Backlight off 7 Set zero display range Options are Zero 0 one division Zero 1 2 divisions Zero 2 3 divisions Zero 3 4 divisions Zero 4 5 divisions and Zero 5 6 divisions 8 Set RS 232 Serial Transmission Rate Options are bAu 96 9600 b...

Page 18: ...ing charging transformer to see if the failure is due to battery defect Charging transformer problem Please try a normal charging transformer to see if the scale can be powered on LCD or related LCD circuit fault After confirming that there is no broken board line or short circuit of connection between LCD and other conducting objects please replace LCD CPU Crystal11 0592M oscillating circuit faul...

Page 19: ...fective Check replace CPU Memory dysfunction Power circuit fault Please check R28 29 30 CP18 and make sure there is no shortcut CPU CPU program effective Check replace CPU Component or part defective Please check replace U7 Print dysfunction Wrong setting Please check reset external device baud rate print mode RS 232 board defective Please check replace RS 232 board Bad connection between RS 232 b...

Page 20: ...contact our Service Higher or lower than A D resolution range 1 Check whether it is A D failure if yes please replace AD 2 LOAD CELL failure replacement is required or contact our Service EEPROM Chksum failure Re sold EEPROM or contact our Service Overload condition Remove weight that is greater than the scale capacity from the pan Wrong calibration weights Calibrate with the correct calibration w...

Page 21: ...lower L C support screws of support 9 Solder L C wire to the main board 10 Insert the keypad and connect all the connectors Scale grinding A First switch on the scale and conduct a calibration B Use weights of 1 3 full load to test the 4 corners and record the shown values C Use a file to grind the Scale grinding point corresponding to the lowest display value out of the four corners when grinding...

Page 22: ...grinding the scale if there are still big differences in the displayed weighing between the 4 corners and center of the scale it means malfunction in L C F Pay attentions to L C specification when grinding the smaller max Capacity and the weaker grinding force Model LC Capacity ZEMIC LC Capacity MAVIN JWE 3K 5Kg 4 5Kg JWE 6K 10Kg 7 5Kg JWE 15K 20Kg 20Kg JWE 30K 40Kg 45Kg 6 2 Main board replacement...

Page 23: ... 5 Paste a protection film on the LCD 6 Upside down the main board and disconnect the L C wire by soldering iron 7 Replace the new main board and 8 Tare away the protection film connect L C wire by soldering iron of the LCD 9 Tighten the 2 fixing screws and 10 Put on the cover and tighten then connect all the connectors the 7 fixing screws ...

Page 24: ... green and S in while 2 Tedea load cell E in green E in black S in red and S in while 6 3 Rechargeable battery replacement 1 Remove the weighing pan 2 Upside down the scale and remove the fixing screw of the battery cover 3 Remove the battery cover 4 Remove the battery 5 Replace the battery 6 Put the battery back as the picture ...

Page 25: ...ing pan Tighten the fixing screw 6 4 RS232 replacement 1 Remove the upper cover 2 Remove the 4 fixing screws of the support 3 Remove the L C module 4 Remove the fixing screws of RS232 board 5 Disconnect the wire and replace 6 Tighten fixing screws of RS232 and the RS232 board connect the wire ...

Page 26: ...Upside down the scale and remove the 7 fixing screws 3 Open the upper cover 4 Disconnect the keypad 5 Remove the upper cover and 6 Clear the defective gum and tear tear down the keypad away the release paper of new keypad 7 Paste the new keypad to the cover 8 Connect the keypad to the main board ...

Page 27: ...25 9 Put on the upper cover and do 10 Upside down the scale and the key testing tighten the 7 fixing screws 11 Put on the weighing pan 6 6 LCD replacement 1 Cut away the LCD 2 Remove the bad LCD 3 Punch the welding spot 4 Install the new LCD ...

Page 28: ...JADEVER SCALE CO LTD JWE service manual 26 5 Tin plaste for the new LCD Pay 6 Finish much attention to the welding spot 7 Applicable Version and Software Version 02 Revision date May 14 2009 ...