Troubleshooting And Error Treatment; Failure Of Device Functions - CAB hermes+ Service Manual

6

Troubleshooting and Error Treatment

32
6.1

Failure of Device Functions

Functional error
Medium is not transported
No print image with medium
transport
Display and navigator pad are
not functioning
The display is not functioning,
but the navigator pad is
functioning
The navigator pad is not
functioning, but the display is
functioning
Communication via an interface
is not functioning
Communication via the
interface on the PCB I/O
Interface is not functioning
Table 3
Possible remedy
Check electrical connections between PCB CPU and motor
Check drive mechanism
Replace the PCB CPU
Replace the motor
Check plug connections at the printhead
Examine printhead cable for damage and replace if necessary
Replace the printhead
Replace the PCB CPU
Check whether LED1 (green) is illuminating on the PCB CPU  8 on page
35:
• LED1 is not illuminating: The power supply unit or CPU PCB is defective.
Replace PCB CPU or Power supply unit.
LED1 flashes: Firmware update unsuccessful.
•
Reload the firmware  Configuration Manual
Check cable connection between PCB CPU and control panel
Check whether the correct voltages are active at the 3,3 V and 5 V measurement
points on the PCB CPU  8 on page 35
• No voltage at either measurement point: The power supply unit may be
defective. Replace the power supply unit
• No voltage at one measurement point: The PCB CPU may be defective.
Replace the PCB CPU.
Replace LCD Display cpl.
Replace PCB Navi Button assem.
Replace LCD Display cpl.
Check the cable connection between LCD Display cpl. and PCB Navi Button
assem. and replace if necessary
Replace PCB Navi Button assem.
Replace LCD Display cpl.
Check whether the interface configurations of the printer and computer match
For an Ethernet connection, check the validity of the IP address and the subnet
mask
Check the interface cable and replace it if necessary
If all functionality of the interface has been lost, replace the PCB CPU
Check the cable and it's necessary change it.
Replace PCB I/O Interface.
Check connection between PCB USB Hub and PCB CPU .
Replace PCB USB Hub.
Failure of device functions
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