P04 - Display, Led And Buzzer Test; P06 - Capacitor Formation; P07 - Query Filament Values From The Battery-Backed Ram - Siemens MOBILETT Plus Service Instructions Manual

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P04 - Display, led and buzzer test

(Wiring diagram X037E, page 120)
When the test starts, both displays are dark. Then the displays lights in sequence, begin-
ning with the outermost character. The following characters are lit in the same way until all
segments are on. The ready and exposure LED's light up in sequence and the test ends
with an exposure beep. After a short time, the sequence is repeated. When ending the
test with the lamp button, the displays returns to P04 mode.

P06 - Capacitor formation

(Wiring diagram X037E, page 130)
This program is used only if the unit has not been operated for several months or if sev-
eral capacitors have been replaced. The capacitors are slowly charged up to 353 V in a
controlled sequence. The test program starts by displaying:
kV
CAP For = Capacitor formation program
After a short time, the program displays the actual voltage in the capacitor bank:
kV
CAP 150 = 150 Volt.
Approximately every six minutes, the voltage value is increases. The charging sequence
increases as follows:
150-250-299-325-337-345-348-351-353 V. At the 353 V level, the charging will continue
for another 48 minutes to decrease and stabilize the capacitors internal leakage current.
If an error is detected during the formation program, the program is aborted. When the
program is aborted, there is an audible beep and a message is displayed:
kV
P06 Err"xx" = See actual "xx" in separate message list
If the formation ends successfully, the display will show:
kV
P06 PASS = Capacitor formation completed
Duration: Approx. 100 minutes.

P07 - Query filament values from the battery-backed RAM

The kV-values are displayed in the "kV" field. The corresponding filament values are dis-
played in the "mAs" field. Pressing the "kV +" button will display the next higher kV and
corresponding filament value and vice verse with "kV -".
The program starts at 40 kV in the table containing the filament values. The program
shows only the selected number of kV steps (25 or 49 for MOBILETT Plus and 24 or 47
for MOBILETT Plus E).
MOBILETT Plus/ Plus E
mAs
mAs
mAs
mAs
SPR8-215.898.02
Rev. 01
Service programs
Page 4 of 8
01.02 SPS-UD
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Siemens-Elema AB
Solna, Sweden