Panasonic Kx Fb421 Flatbed Plain Paper Fax Operating Instructions

Installation
11For fax advantage assistance, call 1-800-435-7329.
Ink film – installing / replacing 
Install the included ink film or replace the used ink film with a new one.
Replacement film Model No. KX-FA94: prints about 400 letter-sized pages.
See page 6 for accessory information.
1For replacement only:
If ejected paper is stacked on the paper 
stacker, remove it.
2Press down the printer cover open button 
(1). Open the printer cover (2).
LFor first time installation of the supplied 
ink film, skip...

Installation
12For fax advantage assistance, call 1-800-435-7329.
5Insert the gear of blue core of the front ink 
film roll into the left slot of the unit (1).
Insert the rear ink film roll (2).
6Turn the gear of blue core in the direction of 
the arrow.LMake sure that the ink film is wrapped 
around the blue core at least once.
7Close the printer cover by pushing down on 
both sides until locked.
Note:
LThe ink film is safe to touch, and will not rub 
off on your hands like carbon paper.
Rear ink film...

Installation
13For fax advantage assistance, call 1-800-435-7329.
Paper stacker and paper tray 
1
Line up the slots in the paper stacker with 
the pegs on the bottom of the unit, then 
slide until locked.
LThe paper stacker can hold up to 
approx. 100 sheets of printed paper. 
Remove the printed paper before the 
paper stacker becomes full.
2Insert the paper tray into the slot on the 
back of the unit.Note:
LDo not place the unit in an area where the 
paper tray may be obstructed (i.e. by a wall 
etc.)....

Installation
14For fax advantage assistance, call 1-800-435-7329.
Recording paper 
Letter, legal or A4 size recording paper can be loaded. The unit can hold up to 100 sheets of 75 g/m2 (20 
lb.) paper. You may use 60 g/m2 to 90 g/m2 (16 lb. to 24 lb.) paper. See the note for paper specifications 
on page 84. For superior results, we recommend Hammermill® Jet Print paper.
1Fan the stack of paper to prevent a paper 
jam.
2Pull the tension plate forward and hold 
open while inserting the paper.
LThe paper...

Connections and Setup
15For fax advantage assistance, call 1-800-435-7329.
Connections and Setup
Popular ways to use the fax machine
You may already have other devices such as telephone or telephone answering machine besides the fax 
machine. You may use them in the same room or different room. Depending on your situation, select the 
way you prefer to use your fax machine.
–Case 1: Receives faxes and phone calls (on answering machine) on single line (one phone number) 
(page 16)
–Case 2: One line used...

Connections and Setup
16For fax advantage assistance, call 1-800-435-7329.
Case 1: Receives faxes and phone calls (on 
answering machine) on single line (one phone 
number)
Your situation
You wish to use the fax machine and your 
answering machine in the same room.
Telephone wiring image in 
house or officeConnections
Fax
machineAnswering
machineAnswering machine
(Not included)
Telephone 
line cord
To a single 
telephone line
jack (RJ11C)
To a power 
outlet
(120 V, 60 Hz)
Power cord
Remove the stopper.  

Connections and Setup
17For fax advantage assistance, call 1-800-435-7329.
How to set up 
1Set the fax machine to FAX ONLY mode by 
pressing {
{{ {
RECEIVE MODE}
}} } until the 
following is displayed.
LThe display will show the number of 
rings before the fax machine answers a 
call in FAX ONLY mode.
2Press {
{{ {+
++ +}
}} } or {
{{ {-
-- -}
}} } to change the ring 
setting to 5 and press {
{{ {
SET}
}} }.
3Turn on your answering machine.
4Adjust the ring setting of the answering 
machine to less than...

Connections and Setup
18For fax advantage assistance, call 1-800-435-7329.
Case 2: One line used for fax only
Your situation
You wish to use the fax machine only for fax 
reception/transmission.
Telephone wiring image in 
house or officeConnections
Fax machine
Telephone 
line cord
To a single 
telephone line
jack (RJ11C)
To a power 
outlet
(120 V, 60 Hz) Power cord
Connect to LINE. 

Connections and Setup
19For fax advantage assistance, call 1-800-435-7329.
How to set up
1Set the fax machine to FAX ONLY mode by 
pressing {
{{ {
RECEIVE MODE}
}} } until the 
following is displayed.
LThe display will show the number of 
rings before the fax machine answers a 
call in FAX ONLY mode.
2Press {
{{ {+
++ +}
}} } or {
{{ {-
-- -}
}} } to change the ring 
setting to 2 and press {
{{ {
SET}
}} }.
How to receive calls
Just leave it. When the other party sends a fax, 
the fax machine will...

Connections and Setup
20For fax advantage assistance, call 1-800-435-7329.
Case 3: Fax machine and telephone share a single 
line (one phone number); Fax seldom used
Your situation
You wish to use the fax machine and an 
extension telephone in a different room. Most 
calls are phone calls and the fax machine is 
mostly used to send documents.
Telephone wiring image in 
house or officeConnections
Room
Extension 
telephoneFax machineRoom
Telephone 
line cord
To a single 
telephone line
jack (RJ11C)
To a...