Gendex ORTHORALIX 9200 Service Manual page 66

E.5 Electrical checks
Tests 5.7 to 5.12 are intended for standard compliance
certification.
R12 1.
Check the anodic current (setpoint, feedback, wave-
form) on converter board PQ1 (0V reference at TP 20).
NOMINAL VALUE ( V )
mA
FEEDBACK TP16
3 1.57
5
7
8
10
11
12
13
7.33
15
Connect the probe of a storage oscilloscope at TP 13
(feedback signal) and TP 20 (GND). Set 0.5V/div., 10msec
time base.
the overshoot on the tube current waveform is lower
than 10% of the final steady value and lasts less than
20msec. Check also that the tube current stabilizes
within 50msec.
R12 2.
Check the kV (setpoint, feedback, waveform) on the
converter board PQ1 (0V reference at TP20).
ACCEPTANGE
RANGE
2.75
3.30
5.50
7.15
7.70
8.25
E-3
Printed on: 20 Apr 2012, 04:59:40 pm; Printed by: UWE.ZELLER
NOMINAL VALUE (kV) FEEDBACK
kV
TP13 SETPOINT TP18
70 7.0
72 7.2
78 7.8
80 8.0
82 8.2
12 3.
Press the push button on the operator panel control-
ling the motor of the column (up and down) and
check:
umn
switches when the top and bottom positions are
reached.
R12 4.
Check the dose rate.
vice Programs: Free exposure).
Dismount the diaphragm.
Place a dosemeter at 20 cm from the focus: the position-
ing must be accurate due to the reduced opening of the
parameters:
kV mA
10
70 10
80 10
the R/min. (tolerance ± 30%).
R12 5.
Check that the buzzer sounds during the expo-
sure.
Service Manual
ACCEPTANCE
RANGE (V)
5.70
7.10
7.30
7.50
7.10 7.70
7.30
7.50 8.10
7.70 8.30
8.50
8.10 8.70
DOSE RATE
s
Gy/s R/m
1
1 8.3 57
1 10.2 70
(03.0)E
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