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.