Planmeca Intra Technical Manual page 33

E.52 Filament voltage feedback not in specified limits
The filament voltage is monitored by the tube head CPU. The amplifier is faulty.
Replace the tube head PCB.
E.57 Exposure key pressed/failure during self test
The tube head CPU checks the state of the exp-signal when the unit is switched on. The
exposure key or the separate exposure switch can be short-circuited. The arm, extension,
control panel or telephone cable can be faulty. The tube head PCB or the generator PCB
can be faulty.
Check the cables and the separate exposure switch. Replace the control panel, tube head
PCB or the generator PCB (in this order).
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 7 below.
Generator PCB
Molex-3
1
P1
2
3
Molex-6
1
2
3
P8
4
5
6
N.C.
Screw
terminal
1
P14
2
3
Figure 7
E.61 Communication 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).
Technical Manual
Extension cable max.12 m
+12V Gry
GND Brn
ELMP Pink
Ferrite
Extension
cable Con-
nectors
Grn
Yel HV1
Wht HV2
HV1
HV2
Gry +12V
+12V
P6
EXP
Blk EXP
AUX1
Red KVC
P9
AUX2
Brn GND KVC
P7
GND
Blu
SCL
SCL
P8
ELMP
ELMP
Pink
ERROR MESSAGES
Arm cable (Std.)
Yel / Grn
Molex-3
Molex-6
Planmeca Intra X-ray unit 29