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CHAPTER 3 TROUBLESHOOTING
This chapter contains suggestions for diagnostic and repair actions.
PRELIMINARY CHECK
The following checks should be made before going further:
1.
Are the DIP switches set properly to match communication values and existing supply?
See Chapter 1 for DIP Switch settings and procedures.
2.
Ensure that the proper fuse has been installed. See the Operator's Handbook.
3.
Inspect printhead to ensure it is locked in place.
4.
Ensure stock and ribbon are properly loaded. Refer to the Operator's Handbook for printer loading instructions.
ANALYZING FAILURE DURING POWER UP
Each time the printer is turned on, it runs Power-up Diagnostics. These Level 0 Diagnostic Tests are described in
detail in Chapter 4. If any of the first eight tests result in a fault condition, a three digit status code is indicated on the
Control Panel LCD. As shown in Figure 4-2, if any of the following status codes are indicated, the printer will stop
operating, and remain in a "hold mode" until CLEAR is pressed:
909
Memory Failure
911
Virgin Reset
NOTE:
These error codes only appear during a power-up test sequence. If a "765" status code is indicated during
the power on tests, the printer is still operational but may not be able to print all of the commanded label
images.
The Control Panel is tested during the power-up tests by blanking the three digit LCD display momentarily. This is the
final Level 0 test, and would be noticed only if a "765" status code were previously indicated.
EVALUATION OF A 616 ERROR (DOT SHIFTING FAILED)
This error occurs if at least one dot element is non-functional. Shifting the image pattern will not work. You must
replace the printhead.
EVALUATION OF A 704 ERROR (OUT OF SUPPLY)
This error occurs when the sensor is not sensing the supply. This can happen if there is a problem with the supply or
with the sensor. Perform the following procedure:
1.
Verify stock is loaded and properly aligned in the supply guide.
2.
Verify that DIP switches and online settings are set for proper supply type.
3.
Check Bi-cell alignment using gray scale, and check operation using diagnostic procedures (be sure to check
the harness). See Sensor Tests and Bi-Cell Sensor Adjustment, in Chapter 8, for instructions.
4.
Verify Emitter is operational (including the harness) by using an infrared detector probe.
July 1998
765
Printhead Test Failure
TC9830SM Rev. B 7/98 Confidential
13
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Table of Contents
Troubleshooting
