ISA CBA1000 - Trouble Shooting; No Power at Power-On

Doc. CEI12166 Rev. 1 Pag. 37 Of 47
ERROR MESSAGE CONSEQUENCE CORRECTIVE ACTION
Diagnostic error, NVM-1
access
The test set cannot operate The microprocessor board (61)
should be replaced
Diagnostic error, NVM-2
access
The test set cannot operate The microprocessor board (61)
should be replaced
Diagnostic error, I2C – bus
driver communication line
access
No communication with the PC The microprocessor board (61)
should be replaced
Diagnostic error, Dual port
memory access
The test set cannot operate The microprocessor board (61)
should be replaced
3.4 T ROUBLE SHOOTING
The following table lists main faults, cause of fault and the corrective action.
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
Problems after transport Heavy shock Open CBA1000 and check for
loose boards or connections.
At power-on does not turn on Mains supply fuse open Check the fuse; for other
problems, see 3.4.1
The diagnostic is not
completed: the test set is
locked
Fault on the DC to DC converter See 3.4.2
The control knob does not
operate
Knob is not locked, or fault in the
encoder
See 3.4.3
A coil driver does not close Fault in the COILS board (63) See 3.4.4
A breaker contact is not
detected
Fault in the INTE board (62) See 3.4.5
An auxiliary contact is not
detected
Fault in the INTE board (62) See 3.4.6
The travel transducer does
not operate
Fault of fuse (20) See 3.4.7
The micro-Ohmmeter does
not operate
Fault in the board (63) See 3.4.8
Problems during upgrade Loss of supply during upgrade See 3.4.9
The fault cannot be fixed - See 3.4.10
3.4.1 No power at power-on
The mains fuse is located in the power supply plug, in the small drawer. Check it; if it is broken,
replace it.
As an alternative, the battery could be causing the problem. To verify this, act as follows: