Service Manual
Service Instructions
Siemens Ltd. Med India Version 6.0
Copyright SIEMENS LTD. All rights reserved. For internal use only
7-3
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
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 Measuring Point Range
+5 V D915.X15.4 4.8V to 5.2V
+15 V D915.X15.5 13.5V to 16.5V
-15 V D915.X15.7 -13.5V to –16.5V
+24 V(For Filament) D920 X4.7 &4.8 23 V to 25.5 V
Collimator Supply D920.X12A/B 12V ac to 16V ac
7.3 Signals
Signal Measuring Point Range Adjustment
Kvsoll D915.TP.KVS
During Exposure
2.0 ± 0.1 V for 60kV D915.P7
Masoll D915.TP.JRS
During Standby
2 V ± 0.1 V for 60kV D915.P6
CAUTION
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