error code 36 for Mobilett Plus

send me a email address and I can send you some information on this error

Err 36 Overcurrent in HV inverter

Err 36
The message
is not
shown to
the operator.
This
message
can only
be read
out from
the message
history,
P08.
Generator ON The inverter was
interrupted once,
e.g. overcurrent.
If the inverter has been stopped
more than 3 times, the exposure will
be interrupted and the Err 23 message
is shown on the display.
· Check the inverter current, refer to
the section "Error diagnosis HT
and single tank". Refer also to
"P13 - Inverter test".
· The X-ray tube may have arced
during the exposure. If the first
exposure after a long interval is an
exposure with high kV values, tube
arcs can occur.
The unit has to be started with
several exposures at high mAs
values. The kV values selected
should be from 40 kV increased to
133 kV .
Refer also to "Error diagnosis HT
and single tank".

Tests and measurements in the high voltage circuit 6
· Connect the oscilloscope measurement cables to measuring points HVPOS and
HVNEG or HV on D1.
· Adjust the trigger point to the falling edge of the high voltage curve and set the time to
20 - 50 ms/Div.
· If the high voltage cannot be displayed, check the tube current at measurement point
MAPOS on D1. Check the inverter current with an external current transformer.
· Measure HVPOS and HVNEG on D1. Record the fall times (90 - 10 % of HV), high
voltage levels and whether the exposure was interrupted prematurely. Compare with
fig. 2 "HV signal, inverter and single tank normal".
· Measure the inverter current using an external current transformer and the HV. Compare
with fig. 1"HVPEAK and inverter current, inverter and single tank normal".
· In case of an error, compare the oscillogram with Fig. 1 "HVPEAK and inverter current,
inverter and single tank normal"

Malfunction in the inverter or single tank 6
The following procedure will help you to determine whether the problem is caused by the
inverter or the single tank.
The current flow between the inverter and the single tank must be approx. symmetrical.
If this is not the case, the inverter is defective.
Measure the resistance between K63/POS and K64/1 or K64/2 or K63/NEG and K64/1 or
K64/2. The value must be larger than 0.5 Mohm. If the value is less than 100 ohms, the
inverter is defective (transistors in the modules are bad).
The inverter current is always measured using a separate current
transformer between the inverter and single tank.
Measuring the falling edge of the high voltage (in the measurement point HT on D1 board)
Long falling edge (approx. 2 ms)
Measuring the inverter current
(Separate current transformer between
inverter and single tank)
Asymmetrical inverter current e.g.,
onesided or one half-wave significantly
lower (diff. >50%), or no current can be
measured
Inverter or cable
K64 defective
Short falling edge) (approx. 50 ms)
(Tube arcing)
Single tank or
cable K64
defective
Symmetrical current and current
> 300A. See figs. 3 and 4.
Single tank or
cable K64
defective