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7 Service
7.1
Troubleshooting
7.1.1 Tools and measuring instruments required
• Usual service tools
• Digital multimeter
• 2 channel storage oscilloscope with 2 probes and 1 current probe
• mAs meter
• Protective ground wire and leakage current tester: Bender safety tester
• Radiation detector
CAUTION
During Oscilloscope operation the protective ground wire connection in the
power cable must not be interrupted under any circumstances.
For measurements where ground loops that may be present could impair the
measuring result, use the Tek amplifier and the trigger attachment .
7.2
Control Voltages
Voltage
+5 V
+15 V
-15 V
+24 V(For Filament)
Collimator Supply
7.3
Signals
Signal
Measuring Point
Kvsoll
D915.TP.KVS
During Exposure
Masoll
D915.TP.JRS
During Standby
Siemens Ltd. Med India
Measuring Point
D915.X15.4
D915.X15.5
D915.X15.7
D920 X4.7 &4.8
D920.X12A/B
Range
2.0 ± 0.1 V for 60kV
2 V ± 0.1 V for 60kV
Copyright © SIEMENS LTD. All rights reserved. For internal use only
Range
4.8V to 5.2V
13.5V to 16.5V
-13.5V to –16.5V
23 V to 25.5 V
12V ac to 16V ac
Version 6.0
Service Manual
Service Instructions
Adjustment
D915.P7
D915.P6
7-3