Planmeca Proline CC, Technical Manual

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Chapter G - TROUBLESHOOTING
Planmeca Proline CC panoramic x-ray G-7
Technical Manual
5 FLAT BATTERY
The equipment has two different types of parameter memories. The most critical parameters that
are seldom changed are stored into an EEPROM-type memory that is non volatile but the
amount of changes made is restricted to about 10’000 times per single data.
The other parameters that are not fatal if lost and which are altered more often are stored into a
battery backup RAM-type memory on the keyboard processor board. This information is lost and
substituted with minimum or less harmful ones if the battery goes flat.
When the equipment is powered on the battery is charged. A completely flat battery will be fully
charged within about two hours. If the equipment is never switched on or just shortly after long
intervals as may be the case when stock keeping it, the battery will last at least two months.
When the equipment is turned on with a flat battery the clock display and mm display are blinking
all zeroes. In the following is explained, which information is lost and with which values it is sub-
stituted.
After detecting this kind of a situation the substituted information must be corrected by resetting
the above listed parameters to actual ones.
CAUTION There are two parameters that must be corrected in order to gain the normal operation!
If the equipment was a cephalostatic one it must be once again programmed to be cephalostatic
as it is explained in the chapter “Panoramic/cephalostatic setup” on page B-15.
The correct place of the layer positioning motor must be learned into the system by driving the
motor in service mode twice past its reference sensor till the mm display ceases blinking. Take
care not to drive the motor into the mechanical ends that may cause damage.
LOST INFORMATION SUBSTITUTED INFORMATION
Calendar clock All zeroes
Layer position 00
Exposure counters All zeroes
kV value last used 60 kV
mA value last used 04 mA
Cephalostatic exposure time last used 0.2 sec (cephalostatic models only)
Cephalostatic soft tissue wedge position Position 00 (cephalostatic models only)
Up/down motor on one end limit Assumed to be not on an end position if not on
sensor
Automatic return mode Automatic return off
kV, mA pair select mode (AUTO) Individual settings
Temple rests open/closed Assumed to be open if not on sensor
Panoramic/Cephalostatic version Panoramic