CGP-220  (260-1268)       Ink Jet Mechanism            Faxback Doc. # 5804


After loading the paper and unlocking the carriage, it is a good idea to
confirm that the Ink Jet mechanism is working properly. This is done by
pressing the FEED switch (immediately after unlocking the carriage). The
carriage will start moving and print the test pattern shown below.

NOTE: The Ink-Jet Mechanism may be checked by the above procedure every 
time the carriage is unlocked or after Ink-Supply Pumping (this will be 
discussed in the next section), or whenever ambient temperature is low.

If the printed pattern appears irregular or the color is weak, the ink 
supply may need to be "pumped."

INK SUPPLY PUMPING

When the CGP-220 does not print or printing quality is poor, the problem 
may be remedied by "pumping" the ink supply.

1. Turn the power ON and confirm that the Printer is OFF LINE.

2. Open the Paper Cover.

3. Press the Green Lever all the way down and hold it there for one second.

4. Release the Green Lever.

5. The ALERT Indicator will blink for about ten seconds. When it stops
   blinking, lift the Green Lever to the top position.

6. Close the Paper Cover.

7. Check the Ink-Jet Mechanism by printing the test pattern again.

If the quality of the printed pattern is still inadequate, repeat Ink 
Supply Pumping.

A maximum of two "pumping" should suffice. After Ink Pack replacement or 
long storage, however, five to six "pumpings" may be necessary.

REPLACING THE INK PACKS

Your CGP-220 comes with two Ink Packs installed. The Black Ink Pack 
(260-1281) can print about four million characters; the Tri-Color Ink 
Pack (260-1282), about three million.

When printing quality does not improve after repeated Ink-Supply Pumping 
and you have already printed more than eight rolls of paper, it is likely
that the Ink Packs are exhausted.

To replace Ink Packs:

1. Turn the power OFF.

2. Insert a coin or a small flat object in the opening of the Ink Pack
   Compartment and, carefully, pry it open.

3. Grasp the empty Ink Pack by the sides and pull it out gently but firmly.

4. Be certain that the Ink Pack is empty by holding it sideways and then
   shaking it. if the ink sack inside does not jiggle freely, the Ink Pack
   is empty.

5. Insert the new Ink Pack in place, making sure it stays firmly attached.

6. Pump the Ink Supply.

7. Close the Ink Pack Compartment.

NOTE: Dispose of used Ink Pack immediately; remaining Ink may spill.

REMEMBER:

* Use only Ink Pack replacements specially designed for the CGP-220 (Black 
  Ink Pack, 260-1281; Tri-Color Ink Pack, 260-1282.)

* Never refill empty Ink Packs.

* Operate the Printer only when both Ink Packs are installed.

* Insert Ink Pack replacements in their appropriate slots (do not inter-
  change them). The Black Ink Pack always goes in the left slot, the 
  Tri-Color Ink Pack, in the right slot.

Failure to observe the above precautions may damage your Printer.

SPECIAL NOTE:  If the CGP-220 is operated in locations 1000 or more feet 
above sea level, (3,,280`), low air pressure may cause Ink Supply 
malfunction.  Should this occur, leave the Printer unused for 24 hours so
that the pressure inside the Ink Packs and tubes equalizes to the air 
pressure outside. Then "pump" the Ink Supply. Also, if the Printer is 
carried around, bubbles may appear inside the ink tube, causing irregular 
printing. Leaving  the unit unused for 6 hours and then "pumping" the Ink 
Supply takes care of this.


(smm 08/04/93)