Sam4s SPS-500, Service Manual

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SAM4S SPS-500 SERIES 5-1
5 Maintenance and Adjustment
5-1 Maintenance
5-1-1 Cleaning the Printer Head
Paper dust on the heating elements may lower the print quality. In this case, clean the print head as follows:
After printing, the printer head can be very hot.
Be careful not to touch it.
Also let it cool before you clean it.
Do not damage the printer head by touching it with your fingers or any hard object.
1. Turn the POS System power switch off.
2. Open the Printer Cover.
3. Open the cover of paper supplier with pushing the ORANGE CAP LEVER.
4. Clean the Printer Head Thermal Element with a cotton swab moistened with alcohol solvent.
(ethanol, methanol or IPA )
5. After confirming that alcohol solvent has been dried up completely, close the cover of paper supplier
until be locked.
Figure 5-1 Clean the Printer Head (SPS-520 / SPS-530)
Caution: Note that the thermal head(Thermal Element and Radiation Plate) becomes very hot during normal
operation. To prevent the danger of burn injury from thermal, be sure to wait for about 10 minutes after
turning power off before beginning the cleaning.
Radiation plate
Connector
Spring pin
Head tip
Print circuit board