Bematech KC-4112 Rev.1.0 - Manual (Page 23)

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Chapter 10
TTTTTrrrrroubleshooting oubleshooting oubleshooting oubleshooting oubleshooting
This Chapter shows possible solutions to some of the more usual printer problems.
Diagnostic failure methods
Use one of the following methods to diagnose the areas where failures occurred.
• Refer to General problems for diagnosing failures that are not reported by the ERROR LED
• Refer to ERROR LED coded problems for diagnosing failures reported by the ERROR LED
In case of defective parts, refer to chapter 9 and select the right FRU to order.
General problems
Table 1
Possible Solution
Lock the head up lever Possible Cause
Head up is unlocked
Possible Cause
The control board may be damaged
The thermal mechanism may be damaged Possible Solution
Replace the control board
Replace the mechanism
Possible Cause
The control board may be damaged Possible Solution
Replace the control board
Possible Cause
The thermal mechanism may be dirty
The control board may be damaged
The Thermal mechanism may be damaged Possible Solution
Clean the thermal head
Replace the control board
Replace the thermal mechanism
The PAPER LED is blinking, and nothing is printed
The printer makes a noise, but nothing is printed
The printout is faint
A column of dots is missing in printout
The printer does not turn on; the LEDs on the control panel do not come on
Possible Cause
There is no power in the electric outlet
Power cord disconnected or open
A problem with DC board
Power supply is not working
Possible Solution
Check if there is a central switch for the room / outlets.
Turn off the printer, check the power cord’s continuity
and the connection between the printer and the electric
outlet
Replace DC board (refer to Chapter 12)
Replace power supply