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MOBILETT Plus HP
SPR8-220.061.03
Page 14 of 22
Siemens AG
Rev. 03
09.03
CS PS 24
Medical Solutions
2 - 14
Display messages
CAL 26
Generator ON
The CMOS memory
cannot be read or
programmed.
•
Check all supply voltages on D1
(see page 110**).
•
Check the voltage in the backup
battery (> 2.8 V) and the battery
jumper (see page 110**).
•
If all power supply voltages are
present, the error is probably on
D1.
If the message "CAL 26" occurs
repeatedly or if the message can
not be acknowledged by pressing
kV+ or by switching the unit OFF
and ON, replace D1.
CAL 27
Generator ON
during startup
Error in ROM mem-
ory. Check sum is
incorrect.
•
Check that all supply voltages on
D1 are present (see page 110**).
•
The ROM containing the program
is defective. Replace the software
(IC’s I72, I66 and I74) on D1 (see
page 110**).
•
If the error reoccurs after replacing
I72, I66 and I74, replace D1.
Dis-
played
messages
Mode of
operation
Cause
Possible reasons and advice
* See section "Monitoring the kV and mA values"
** Wiring diagram X037E
Tab. 1