Brother International HL-3400CN Users Manual - English - Page 156

HEX DUMP MODE CHAPTER 4 CONTROL PANEL This printer has a useful Hex Dump Mode for checking the print data sent from your computer. The printer lists the print data in hexadecimal form. To enter the hex dump mode, follow these steps: 1. Check the printer power status. 2. Proceed as follows: • If the printer has been turned off, turn on the printer. The printer starts the self-test and the display shows the following message. 04 SELF TEST • If the printer has been turned on, reset the printer with the Reset button. 1) Press the Sel button to take the printer off-line. 2) Hold down the Shift button and press the Reset button. The display will show "RESET PRINTER". 3) Press the Set button with the "RESET PRINTER" selected. 3. Hold down the Continue / Shift button. The printer checks the Continue / Shift button at the end of self-test or printer reset. If the button is held down, the printer enters the hex dump mode and goes on-line. The display will show the message "HEX DUMP MODE" and the printer will return to the on-line state.  Note If the printer returns to the on-line state without displaying the message "HEX DUMP MODE", you did not hold down the Continue / Shift button immediately after pressing the Set button. Try the above steps once again. 4. Send data from your computer. When the printer receives data, it starts printing hexadecimal values of the received data. 4-85