Planmeca ProX - Page 42

8 ERROR MESSAGES
40 Planmeca ProX Technical manual
E.60 ± 15VDC voltage is out of limits
The tube head CPU measures the internal voltages generated by tube head PCB power
supply from the 12V operating voltage. If this error occurs before exposure, the tube head
PCB is faulty. If the error occurs after the exposure, the generator 12V power supply is
faulty, or the mains filtering capacitors charging circuit is faulty. The extension cable can
be too long and/or the wire cross sections too small.
If the error occurs immediately after switching the unit on, replace the tube head PCB. If
the error occurs only after starting the exposure, measure the 12 V voltage at the
generator PCB P13 connector. If the voltage drops at the beginning of the exposure
(generator’s green indicator light dims), replace the generator PCB. Check the connectors
of the arm cable and the length of the extension cable, as well as the wire cross sections.
The properties of extension cable are given in the figure below.
E.61Communication error between control panel and tube head
CPU
The tube head PCB’s 12V voltage feed or the communication between the control panel
and tube head CPU is failed. The arm/extension cable or control panel/telephone cable is
faulty.
Check the cables. Measure the 12V voltage at the tube head PCB P2 connectors pins 1
and 4. Check if the red LED D7 on the tube head PCB is on. Replace the tube head PCB,
control panel or the generator PCB (in this order).
E.71FLASH memory check-sum error (tube head CPU)
Tube head CPU internal error.
Replace the tube head PCB.
E.81EEPROM memory defective (tube head CPU)
Tube head CPU internal error.
Replace the tube head PCB.
E.83Config register error (tube head CPU)
Tube head CPU internal error.
Replace the tube head PCB.
P6
P7
P9
P8
HV1
HV2
+12V
EXP
KVC
GND
AUX1
AUX2
SCL
ELMP
N.C.
Yel/Grn
Extension cable max.12 m
Extension
cable Con-
nectors
Molex-3
Molex-6
Generator PCB
Arm cable (Std.)
HV1
HV2
+12V
EXP
+12V
KVC
GND
SCL
GND
ELMP
ELMP
Gry
Brn
Pink
1
1
2
3
2
3
4
5
6
Molex-3
Molex-6
1
2
3
Screw
terminal
P1
P8
P14
Yel
Yel / Grn
Wht
Gry
Blk
Red
Brn
Blu
Pink
Ferrite