8
UP 300 Service Manual
Failure
Cause
Solution
Remark
⚫
The machine
directly powers
off and restarts
when the
initialization
function is
triggered in any
method
⚫
The cause of this
fault is a short
circuit
➢
26P colour cable
➢
Platform FFC short
circuit
➢
Platform adapter
board damaged
➢
LED light short
circuit
➢
Height aligning cable
short circuit
Turn off the power and replace the 26P color cable
Turn off the power, replace the platform adapter
board
Replace the LED light cable
Replace the height aligning cable
Replace the platform adapter
board
Replace the height aligning
cable
Short circuit is easy to
damage the mainboard and
platform adapter board
➢
Platform adapter board is
damaged
➢
Mainboard is damaged,
there is obvious burning
during initialization, and the
light appears
➢
Short circuit of
aluminum substrate
Turn off the power, and replace the aluminum
substrate assembly
Replace the aluminum substrate
assembly
➢
nozzle adapter
board short circuit
➢
nozzle CFC cable
adapter board
➢
nozzle FFC cable is
damaged or contact
is poor
Turn off the power and replace the nozzle adapter
board
Turn off the power and replace the mainboard
adapter board
Turn off the power and check if the FFC cable of the
nozzle has defects such as false connection,
crushing, and plug loose. If yes, replace it
Replace the PCB nozzle adapter
board
Replace the mainboard cable
adapter board
Replace the FFC-Y axis adapter
cable
➢
Short circuit of
internal components
of the nozzle
Turn off the power and replace the nozzle assembly
Remove and replace the nozzle
assembly
➢
Power cable or
signal cable of
screen short circuit
Turn off the power, check if the power cable and
signal cable are damaged, and if the connector is
broken or the plug is loose. If yes, replace the
power cable, signal cable / re-plug
Replace the power cable and
signal cable
➢
Mainboard
damaged
Turn off the power and replace the mainboard
➢
CPU damaged
Turn off the power and replace the CPU
➢
Display damaged/
power/signal cable
damaged
Turn off the power and replace the display
Check if the power/signal cable is disconnected or
broken
Remove and replace
power/signal cable
Failure 03: Initialization failed: direct power off
