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TTP-243 Bar Code Printer
Service Manua
l
3.14 Flash memory Replacement
If files can not be stored in the FLASH memory or if the firmware can not be upgraded,
the first LED turns ON and OFF incessantly to indicate the Flash memory fails. Please
follow the steps below to replace it.
1. Turn off the printer power.
2. Remove the power cord and RS-232 and/or parallel port cable.
3. Open the top cover of the printer.
4. Remove the printer front panel.
5. Remove the two screws and the metal cover.
6. Release the cable tie and remove the peel-off sensor connector.
7. Remove the screw on the PCB of peel-off and cutter connector.
8. Remove the screws in the lower left, lower right corners of main mechanism.
9. Remove all four screws of the internal label roll mount.
10. Move the mechanism in the label feed direction about 5 mm.
11. Take out the internal label roll mount and remove the connector.
12. Use an IC clamp to remove the FLASH memory.
Fig. 3.21 Remove Flash Memory with an IC clamp
Note: The notch of both flash memory and socket must be in the same direction.
13. Install the new FLASH memory.
14. Install the FLASH memory cartridge. Copy firmware into the new Flash memory cartridge.
15. Reassemble the mechanism and internal label roll mount in the reverse procedures of the
removal.
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