Xo 4, Troubleshooting Manual

Page: 39 / 88

XO 4 & XO FLEX TROUBLE SHOOTING GUIDE
Version 3.30 39
The proportional water valve
defective. Even if Output OK on the “power
driver” the valve
AN-903 still does not work.
Change proportional valve
The flow meter is defective. Check by configuring to MAX
water flow 100ml/min in the
"technician menu". If still no
water flow, Replace the
Flow meter AN-119
Verify the Flow meter return
voltage on Jumper J7 - Pin 4 and
5 on the bridge PCB AN-368
No flow if the voltage <0.5V
The instrument bridge PCB is
defective. Change “Bridge PCB AN-368”
No air spray Fault in the air supply line to the
instrument bridge (inlet block) Check the air reaches the
syringe. If no air, refer to
“water/air in XO4 & XO Flex”.
The air flow is set too low Check the air flow configuration
“AIR” in the technician menu. Set
it to 100% during the test
Info regarding “technician menu”
refer to page 26.
Obstructed by plastic swarf or
grease deposit Dismount the suspension
connector and check at the
connector are not obstructed by
grease residue or plastic swarf.
Defective proportional air spray
valve Replace proportional air spray
valve, AN-503 on the syringe
block.
The instrument bridge PCB is
defective. Change Bridge PCB AN-368.
No “cool air” Fault in the air supply line to the
instrument bridge (inlet block) Check the supply of air spray at
the syringe. If not, refer to
“water/air in XO4 & XO Flex”.
The configuration of “Cool air” is
too low. Verify that the “COOLAIR”
parameter in the unit menu is set
properly >0 in the “technician
menu”. Refer to page 13 under
“motor”.
The “cool air” proportional valve
is defective. Replace the “cool air”
proportional valve.
The suspension PCB is
defective. Replace the suspension PCB
AO-328
The instrument bridge PCB is
defective. Change “Bridge PCB AN-368”