Error Message or LED Indication - Troubleshooting

LED Light

• Definition of LED Lamp
• The machine does not print and the LED lamp flashes when I print using a built-in driver. (Windows Vista® / Windows® 7)

Error Message on PC Display

• "Setup start error code 2", (also "code 193", "code 216" or "code 267") appears when I try to install the driver. What should I do?
• I get an error saying "The roll of labels or tape inside the machine does not match the one selected in the application."
• When I try to use the database function, the error message "Code=800401f9 Msg: Error in the DLL Source: ADODB. Connection Description:" appears. What should I do?  
• "Error: 126" appears on my Windows® XP PC during the installation of the printer driver.
• The message "Wrong media size." appears. What should I do? (P-touch Editor 5.0 for Mac)
• The QL-series printer does not print or a printing error is received.
• A data transmission error appears on the computer when trying to print a label.
• The message "Paper cannot be fed. (There may be no more paper.)" is displayed on the print monitor screen. What should I do?