Bright Technology cb958b - 7.4 General Troubleshooting and Solutions; Press Sensor Replacement Procedure

18
Sometimes, inaccurate balance or incorrect position is caused by the breakage of the press sensor. The
changing method of the sensor is as following:
(1)Remove the upper cover and the right side panel of the balancer.
(2)Detach the nut1 and 2, elastic washer, plain washer and large flat washer.
(3)Loose the back nut3.4.5 to detach every parts.
(4)Change the new sensors and tight the dual-head screw and then tight nut 5. The installation of the
negative and positive pole of the piezoelectric ceramics disk of the sensor must follow the picture.
(5)Use the spanner to tight the nut4 and then nut 3. At this moment, you should pay attention
to the horizontal and vertical sensor screws should be vertical. And the end of the screws should
be just fallen into the 2 holes.
(6)Mount the nut1 and 2, elastic washer, plain washer and large flat washer and completely tigh them.
Usually, lock nut 1 and then nut 2. We require to flat the elastic washer and then return the nut
1/4—1/2turn. Use this way to get the normal pre-pressure of the press sensor（use torque wrench to lock
and the torque is 40NM）
(7)There are glass glue coat on the surface of the press sensor and the normal installation result
of the piezoelectric ceramics disk of the sensor is the IR should be larger than 50MΩ.
(8)Discharge the output line of the shortcuts press sensor，insert into the computer board after discharge
to avoid the breakage of the computer board.
(9)Insert the vertical（┴）& horizontal（∥）sensor plugs according to the original position.
(10)Calibrate the balancer again and install the upper cover and the side panel after check result is
normal.
7.4 GENERAL TROUBLESHOOTING & SOLUTION：
Description
Cause
Solution
Start the machine
but not display.
1. .Check the circuit of 220V is normal or not.
2. power board fault
3. The cable between the power board and
computer loose
4. computer board fault
1. Check and connect the
external power source.
2. Changer the power board
3. Check the plug cable
4. Change the computer board
Display is normal
but the start button
and input push
button not working.
1. contact switch not good
2. machine breakdown
1. Open the housing of the machine
and plug in and tight the contact
switch plug.
2. Start the machine again
Display is normal
but not braking after
start.
1. The cable between the power board and
computer loose
2. power board fault
1. Plug in and tight the cable
between the computer board and
power board.