Troubleshooting
GA10218_002_A7 - 9/2015 - © Oerlikon Leybold
99
E34 24V voltage at MSV board is
too low!
Signal MVPZN on the MSV board is active. 24 V signal voltage is too
low, U < 18.3 V.
– Fuse F1 on the MSV board has blown.
– Reference voltage UREF on the MSV board XT7/1 is too high,
U > 5 V.
– DC/DC converter on the MSV board is defective.
– 24V power supply voltage of the main power supply is defective or
stressed to much.
E35 Anode-cathode voltage is too
high!
Anode-cathode voltage is > 130 V
MSV board is faulty.
E36 Anode-cathode voltage is too
low.
Anode-cathode voltage is < 30 V.
MSV board is faulty.
Fuse F4 on MSV board has blown.
E37 Suppressor voltage reference
value too high!
Signal MFSZH on MSV board is active. Suppressor signal command
variable is too high.
– Suppressor voltage has a short circuit.
– MSV is faulty.
E38 Suppressor potential too high! Suppressor potential is higher than 363V.
MSV board is faulty.
E39 Suppressor potential is too
low.
Suppressor potential is lower than 297V.
MSV board is faulty.
E40 The anode potential exceeds
its nominal value by over 10%!
The actual anode potential exceeds its nominal value by 10%. The
nominal value can be displayed in the service menu.
MSV is faulty.
MC 68 is faulty
E41 The anode potential has
dropped below its nominal
value by over 10%!
The actual anode potential has dropped below its nominal value by
10%. The nominal value can be displayed in the service menu.
MSV is faulty.
MC 68 is faulty.
E42 Nominal value of the anode
potential is too high!
Signal MFAZH on MSV board is active.
Anode voltage has been short circuited.
Nominal value of the anode voltage is too high. Anode voltage is lim-
ited to about 1,200 V.
E43 Cathode current is too high!
MSV Cat-Heater >>
Signal MPKZH on MSV board is active. Cathode current is too high, I
> 3.6 A.
MSV is faulty.
No. Displayed Message
Description and possible solutions