Tru-Test WOW2 Service Manual

EziWeigh5i, EziWeigh6i, EziWeigh7i, WOW2, DAS WOW2
Issue 2, 7/2017 2
Contents
Service centre requirements................................................................................................................ 3
Product feedback ........................................................................................................................... 3
Technical bulletins.......................................................................................................................... 3
Returning a product........................................................................................................................ 3
Fault report card............................................................................................................................. 4
Service equipment ......................................................................................................................... 5
Parts diagrams.................................................................................................................................... 6
Parts list ............................................................................................................................................ 10
Troubleshooting ................................................................................................................................ 12
Error messages ................................................................................................................................ 16
Testing the indicator .......................................................................................................................... 18
Checking for stable weights.......................................................................................................... 18
Checking the calibration ............................................................................................................... 18
Checking the load cell codes ........................................................................................................ 18
Checking the power connection.................................................................................................... 19
Checking the USB connection (EziWeigh6i, EziWeigh7i, WOW2 and DAS WOW2 only)............... 19
Checking the RS232 serial connection (EziWeigh6i, EziWeigh7i, WOW2 and DAS WOW2 only) .. 19
Checking the Bluetooth
®
wireless connection (EziWeigh7i, WOW2 and DAS WOW2 only) ........... 19
Checking the LCDs ...................................................................................................................... 19
Testing the keypad ....................................................................................................................... 19
Checking the battery .................................................................................................................... 21
Repair procedures ............................................................................................................................ 22
LCD handling and storage precautions ......................................................................................... 22
Using flexible printed circuits (FPCs) ............................................................................................ 22
Protecting the case front .............................................................................................................. 23
Removing and refitting the case back ........................................................................................... 24
Replacing the case seal ............................................................................................................... 26
Replacing the case front............................................................................................................... 27
Replacing the bezel, keypad and overlay...................................................................................... 28
Replacing the battery ................................................................................................................... 29
Replacing the load bar and power/communication connectors ...................................................... 29
Replacing the piezo speaker ........................................................................................................ 30
Removing and refitting the PCA ................................................................................................... 31
Replacing the LCD ....................................................................................................................... 33
Updating the firmware .................................................................................................................. 33
Accessing the hidden menus............................................................................................................. 34
EziWeigh5i ESC+MENU hidden menu ......................................................................................... 34
EziWeigh6i, EziWeigh7i, WOW2 and DAS WOW2 ESC+MENU hidden menu .............................. 36
Factory Calibration screen............................................................................................................ 37
Bluetooth
®
settings (EziWeigh7i, WOW2 and DAS WOW2 only)........................................................ 38
MAC Address ............................................................................................................................... 38
Bluetooth PIN ............................................................................................................................... 38
Bluetooth factory reset ................................................................................................................. 38

Tru-Test WOW2 Specifications

General

Brand	Tru-Test
Model	WOW2
Category	Accessories
Language	English