Genicom 3600 Testing Printer and Host Communications, To test host-to-printer communications

3600 Printer Maintenance Manual

Test and Service Mode Command Descriptions (continued)

Command Code	Test	Description
S	Transmit Printhead	Transmits the average, maximum, or minimum printhead
	Resistance Values*	dot resistance value back to the host. Each value is a
		numeric data string separated by a comma.
T	Transmit Label	Transmits the label taken sensor output back to the host.
	Taken Sensor Value	Values can range from 00 to FF.
U	Transmit 40V Supply	Transmits the 12V supply output back to the host. The
	Value*	values range from 00 to FF.
V	Transmit 24V Supply	Transmits the 24V supply output back to the host. Values
	Value*	can range from 00 to FF.

* The printer ignores this command.

Testing Printer and Host Communications

This is a simple test of host-to-printer communications. If this test fails, there may be a problem with the printer serial port receiver circuitry or the setup.

To test host-to-printer communications

1.Switch the printer power off. Return the DIP switch settings to the standard configuration if they have been changed.

2.Press and hold the Feed/Pause button while powering on the printer. The printer presents the hardware configuration test label.

3.Release the Feed/Pause button after the hardware configuration label is printed. You are now in data line print mode within the Test and Service mode.

4.Send down some characters from the host. At this point the printer does not attempt to interpret any printer commands, but simply prints each character and its hexadecimal equivalent as it is received. If you are using a PC running DOS, send down the following strings of commands from the DOS prompt:

Note: ^Z is [Ctrl] [Z].

\MODE COM1: 96,E,7,1,N [Enter]

(to configure the serial port)

\COPY CON COM1: [Enter]

(tells the PC to copy the following text to the COM1 port)

ABCDEF^Z [Enter]

(these characters are sent to the printer)

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