DMP 302 (26-2849) Using the Hex Dump Feature Faxback Doc. # 4172 The printer can print the hexadecimal values for data transmitted to it. This mode is useful for checking exactly what information is being received by the printer. To implement this function, turn on the printer while holding down [LQ/DP/PITCH] switch. To exit the hex dump mode, turn off the printer and then turn it on again.