HF Series Generators
T roubleshooting
TR-1005R4
45
5. Connect a scope to the Test Point TP5 (mA) in the HT Control Board. Check that when an
exposure is made by pressing at the same time the “Prep” and “Exp” controls, the mA at the
beginning of exposure is low . Check that when the exposure is made by pressing first the “Prep”
control and then the “Exp” control, the mA at the beginning of exposure is correct.
6. For Low Speed Generators:
G Reprogram the “Rotor Acceleration and Filament Setting Time” as stated in the Service
Manual, one step over the time as it was before (a.e.: if it was 1.2 seconds, reprogram for
1.8 seconds) and check if boosting is well configured.
7. For High Speed Generators:
G When performing the test for High Speed Generators check that the self-maintaining mode
is not active. In order to check if the problem disappears, select the highest mA station for
Small Focus and the lowest kVp allowed for this mA station (a.e. 40 kVp, 150 mA, SF).
Make an Exposure by pressing at the same time the ”Prep” and “Exp” controls; check that
the mA reading at the beginning of the Exposure is correct. Do the same for Large Focus
(a.e. 50 kVp, 500 mA, LF). If it is found not correct, reprogram a step over at the time for
each case, and test again.
ERROR CODE : E13
DESCRIPTION : No kVp during exposure or kVp out of tolerance.
ERROR TYPE : Informative. May abort exposition.
APPLICABLE TO : All Generators
APPEARS WHEN : During and after exposures.
INFORMATION / SYMPTOM : No kVp during exposure.
POSIBLE CAUSES
This error assumes that the fault is not on the IGBT and is not due to arcing in the
X-ray Tube.
Defective HV Transformer.
Defective HT Controller Board.
Defective IPM Driver Boards.
Poor connection on the IPM Driver Boards.
ACTIONS
1. Check 5 VDC between P1-4 and P1-3 (GND) in both IPM Driver Boards.
2. Check 115 VAC between pins 1 and 2 of connector P2 on the same Boards.
3. If it is OK, check if the -kVp (TP12) and +kVp (TP 11) test points on the HT Controller Board are
symmetrical. If they are not, check signals -- kV and + kV (in Compact Generators between P4-1
and J1-B at HV Transformer and also between P4-2 and J1-C at HV Transformer) (in no
Compact Generators between P4-1 and TB1-3 at HV Transformer and also between P4-2 and
TB1- 4at HV Transformer) if they are OK, replace the HV Transformer.
4. Check the connectors on the IPM Driver Boards. Check continuity in P3-1 (-kV DR1), P3-2
(--kVDR2) and those signals in IPM Driver Boards. Check with a scope in TP17 (1V=33.33kVp),
if value is OK, replace HT Controller Board; if value is not OK, replace IPM Driver Boards.
5. If kVp value and time is OK and “E13” appears, check that for software version V3 and up the
Dip-switches of A3024SW3 are all in OFF position at A TP Console Board.
Note .
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