Table of Contents
Advertisement
No display on VFD, and buttons do not work
No display on VFD, and
buttons do not work
Yes
Check whether there is
correct
contact
CN301 and CN6
Yes
check-24V+12V,VCC(+5v)
voltage on the power and
front board
Yes
Check
there
VSDA0 and VSCK signals
on CN303 on the front board.
Yes
1.Check whether bad solder exists on
U301 and pins of VFD,
2.Check whether the circuit connected to
K302, K303, K304 and K301 is broken,
3.Check whether R300, R301 and R302
are open-circuit.
Yes
Replace U301 or VFD
All manuals and user guides at all-guides.com
4-6
No
between
No
are
VSTB,
No
CN6 (PIN 4 V.SCK)
No
Trouble shooting chart
Correct connection
Fix power supply board top
a power supply for should
electric circuit
Check the U3's pin 62,63,64 arrive
the CN6 connect condition
CN6 (PIN7 VSDA0)
Correct connection
Advertisement
Table of Contents
