Siemens MOBILETT Plus HP Service Instructions Manual page 12

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WARNUNG WARNING
- Measure the voltage on the capacitors in M11 and check that the voltage level is <2 V
DC. If not, discharge the capacitors with R103 (Fig. 5).
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Fig. 5
WARNUNG WARNING
MOBILETT Plus HP
If U11 or U301 is blown, the capacitor in M11 will not be dis-
charged with S10.
The capacitors could still be charged.
Verify that U11 or U301 has not blown. The capacitor in M11 must
then be discharged as stated below.
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Left connector on D7 to the + connector of the digital multimeter
Second left connector on D7 to the fuse-side (U11) next to the capacitor
Second right connector on D7 to the - connector (GND) of the digital multimeter
Right connector on D7 to the P11 connector on the power conversion unit (M10)
If the charging/discharging does not function, the power conver-
sion unit M10 and M11 must be considered "charged".
This means a risk of high voltage.
Use caution when performing measurements at the capacitors in
M10 and M11.
Use only the specified measurement devices (350 V DC).
SPR8-220.061.03
Rev. 03
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Page 6 of 6
09.03 CS PS 24
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