Service Instructions
Multimobil 5C
Siemens Ltd. Med India Version 5.0
Page 13 of 73
Copyright © SIEMENS LTD. All rights reserved. For internal use only
Signal Measuring Point Range Adjustment
time meter)
During exposure
Time 238 – 262 msec
(Refer to the Exposure
charts section for various
combinations of kV &
mAs for units with 190-
240V and units with
110V.
Cal D915.TP. CAL point
During switching on
1.25 to 1.5 kHz D915.P3
Reg D915.TP.REG point
During Service Mode
9.2 kHz ± 0.3 kHz
D915.P4
2.6.3 Exposure
¾ Switch the generator ON.
¾ Set exposure parameters 60KV, 10mAs.
¾ Pull the recoilable hand held exposure release switch and release an exposure.
¾ The Amber colored LED on top panel lights up for a short duration equal to
exposure time and an audible indication by a Buzzer from the control.
¾ The LED’s on D915 light in the following sequence:
¾ Select the one step Exposure release switch. Internally First Press & second press
stages are activated. This corresponds to Preparation & Exposure stage with green
LEDV22 & Yellow LED V23 glowing respectively.
¾ In case of error Red LED V24 on D915 lights and error code corresponding to the
error is displayed.
2.6.4 Timing
¾ Set any exposure parameter as per the exposure chart.
¾ Take an exposure and note down the kV and mA wave form in the oscilloscope.
¾ Check for the timing of exposure.
¾ It should be within ±5% of the value defined in the exposure chart.
2.6.5 kVp Measurement
The kVp measurement can be carried out either by kVp-meter or by electrical
measurement.
2.6.5.1 kVp-meter
¾ Switch the unit ON.
¾ Place the kV sensor over the single tank and connect the cable to the meter.
¾ Set the kVp meter at 12pulse and 55-85kV ranges.
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