DMP 310 (260-2876)               Indicators            Faxback Doc. # 4710

The following chart shows the meaning of each indicator on the printer's
front panel.
─────────┬───────────────┬────────────────┬────────────────────────────────
INDICATOR│      ON       │      OFF       │         FLASHING
─────────┼───────────────┼────────────────┼────────────────────────────────
POWER    │Printer is on. │Printer is off. │Slowly: Printer is in standby
         │               │                │mode.
         │               │                │Rapidly: Batteries are low.
─────────┼───────────────┼────────────────┼────────────────────────────────
PAPER    │Printer is out │                │Slowly: Paper is jammed. Remove
OUT      │of paper.      │                │the paper, and press ON LINE|OFF
         │               │                │LINE so that the ON LINE
         │               │                │indicator lights.
         │NOTE: The      │                │
         │printer indi-  │ ────────────── │
         │cates it is out│                │Rapidly: Printer has an internal
         │of paper only  │                │error. Turn off the printer.
         │when you try to│                │Wait at least 3 seconds. Then
         │print.         │                │turn on the printer.
─────────┼───────────────┼────────────────┼────────────────────────────────
MANUAL   │Printer is set │Printer is set  │
         │for manually   │for using the   │────────────────────────────────
         │feeding paper. │paper cassette. │
─────────┼───────────────┼────────────────┼────────────────────────────────
LQ/SSD   │Printer is set │Printer is set  │Printer is set for SSD (super-
         │for LQ (letter-│for draft       │speed draft) manual print mode.
         │quality)       │manual print    │
         │manual print   │mode.           │
         │mode.          │                │
─────────┼───────────────┼────────────────┼────────────────────────────────
ON LINE  │Printer is on- │Printer is off- │Printing automatically stopped,
         │line--ready to │line--not ready │because the print head is hot.
         │receive infor- │to receive info-│Printing automatically resumes
         │mation from the│rmation from the│when the print head cools.
         │computer.      │computer.       │
─────────┴───────────────┴────────────────┴────────────────────────────────

MANUALLY CONTROLLING THE PRINTER

This section gives instructions for manually controlling several printer 
functions. These procedures are necessary only if your software does not 
control these functions.

SELECTING THE PRINT MODE

If your software does not let you specify character format, you can
manually select one of the following print modes:

* LQ (Letter Quality)--Higher resolution than the other two modes but
  slower

* DP (Data-Processing)--Lower resolution but faster than the LQ mode

* SSD (Super-Speed-Draft)--Same resolution as draft mode but print is
  compressed; faster than the other two modes

When you turn on the printer, it is set to letter-quality mode. Follow 
these steps to change the print mode.

1. Press ON LINE|OFF LINE so that the ON LINE indicator turns off.

2. Repeatedly press MANUAL|LQ/DP/SSD until the LQ/SSD indicator shows the 
   desired setting, as follows:

          MODE      LQ/SSD INDICATOR

          LQ        Steady
          DP        Off
          SSD       Flashing

3. Press ON LINE|OFF LINE so that the ON LINE indicator lights.

USING THE QUIET-PRINT FEATURE

For quieter, two-pass printing, use the quiet-print feature for any of the
manual print modes. For faster, one-pass printing, turn off the quiet-print
feature.

The QUIET MODE function switch on the bottom of the printer is set to OFF
at the factory so that the quiet-print feature is turned off.

To turn on the quiet-print feature, do any of the following:

* Set QUIET MODE to ON before you turn on the printer.

* If QUIET MODE is OFF, the printer is on, and the ON LINE indicator is ON,
  press MANUAL|LQ/DP/SSD. While holding down MANUAL|LQ/DP/SSD, turn on the
  printer. When the LQ/SSD and ON LINE indicators light (after about 6
  seconds), release MANUAL|LQ/DP/SSD.

To turn off the quiet-print feature, do either of the following:

* While the printer is on and the ON LINE indicator is ON, press
  MANUAL|LQ/DP/SSD twice within 1/2 second.

* Turn off the printer. Set QUIET MODE to OFF. Then, turn on the printer.

USING VIEW FEED/LINE FEED/FORM FEED

Use these procedures to manually advance the paper.

VIEW FEED: The view feed feature lets you feed the paper so that you can 
view the printing before the printer prints an entire page. You can only
use this feature when the printer is on line and printing is not in
progress.

Follow these steps to use the view feed feature.

1. Press ON LINE|OFF LINE so that the ON LINE indicator is on.

2. Press and hold down VIEW FEED|LF/FF. The paper advances so that you can
   see the line of the paper that was under the print head.

3. Release VIEW FEED|LF/FF. The paper returns to its previous position so
   that printing can begin at that position.

LINE FEED: Follow these steps to feed the paper forward one line (1/6") at
a time.

1. Press ON LINE|OFF LINE so that the ON LINE indicator is off.

2. Press and hold down VIEW FEED|LF/FF for less than 1/2 second.

FORM FEED: Follow these steps to eject one sheet of paper.

1. Press ON LINE|OFF LINE so that the ON LINE indicator is off.

2. Press and hold down VIEW FEED|LF/FF for about 1 second to eject one 
   sheet. Press and hold down VIEW FEED|LF/FF again to feed a new sheet
   into printing position.

(dkh-07/27/93)