Zybio Z3 Service Manual

52
When you have confirmed all the cables are properly connected, all the input power and
indicators work normally, follow the instruction in Table 6-4 for troubleshooting.
Table 6-4 Troubleshooting for main control board
No.
Error
Troubleshooting
Solution
1
LCD
screen
becomes
black.
1. Check whether the cable connecting the main
control board and the backlight socket, and the cable
connecting the main control board and the LCD
screen are properly connected. Unplug and then
reconnect such cables. Power on the analyzer again
and see whether the error is removed. If not, proceed
to next step.
Unplug and reconnect
the cable connecting
the main control
board and the
backlight and the cable
connecting the main
control board and the
LCD screen.
2. Replace the cable connecting the main control
board and the backlight and the cable connecting the
main control board and the LCD screen. If the error
still exists, proceed to next step.
Replace the cable
connecting the main
control board and the
backlight and the
cable connecting the
main control board
and the LCD screen.
3. Use a multimeter to measure the voltage between
PIN1 and PIN5 of P4, when the result is not within the
range of 10.5~13.5V, then the power supply to
backlight is with error. If can’t solve problem, proceed
to next step.
Replace the main
control board
4. Use a multimeter to measure the voltage between
PIN3 and PIN5 of P4, when the result is not within the
range of 4~5V, then there is backlight brightness
control error. If can’t solve problem, proceed to next
step.
6. Replace the LCD screen. If the error remains,
proceed to next step.
Replace the LCD screen
2
LCD display
flickers
1. Reconnect the cable connecting the main control
board and the backlight socket, and the cable
connecting the main control board and the LCD screen.
Power on the analyzer again and see whether the error
Control board and the
backlight and the cable

Zybio Z3 Specifications

General

Brand	Zybio
Model	Z3
Category	Measuring Instruments
Language	English