Brother MFC-J2320 Service Manual page 326

Items shown on the LCD Description
MAC_ERR_1:50
*1 Not required for servicing.
*2 The serial number of the machine can be changed with the following procedure.
1) Press the SET key to display the serial number, then press the 9, 4, 7 and 5 keys in this
order. The cursor appears at the uppermost digit of the current serial number, indicating
that the machine switches to the edit mode.
2) Enter the uppermost digit of the desired serial number with numerical keys. The cursor
moves to the next lower digit. In the same way, enter the remaining 14 digits.
3) Press the SET key to save the newly entered setting and return the machine to the
initial stage of the maintenance mode.
With each item being displayed, press the SET key to display the serial number.
*3 With each item being displayed, pressing the SET key cycles through black  yellow 
cyan  magenta.
*4 With each item being displayed, pressing the SET key cycles through Total printed page
count  Total printed monochrome page count  Total printed color page count  A3/
Ledger printed monochrome page count  A3/Ledger printed color page count  Printed
monochrome page count except A3/Ledger  Printed color page count except A3/Ledger.
*5 With each item being displayed, pressing the SET key cycles through total → black →
yellow → cyan → magenta.
*6 With the item being displayed, pressing the SET key cycles through total → monochrome
→ color.
*7 With the item being displayed, pressing the SET key cycles through A3 plain paper  A3
inkjet paper  A3 glossy paper A4 plain paper  A4 inkjet paper  A4 glossy paper 
4x6/postcard plain paper  4x6/postcard inkjet paper  4x6/postcard glossy paper 
Photo L plain paper  Photo L inkjet paper  Photo L glossy paper.
*8 With the item being displayed, pressing the SET key cycles through A3 plain paper  A4
plain paper  4x6 plain paper  4x6 glossy paper.
*9 With the item being displayed, pressing the SET key cycles through total → paper tray 1 →
paper tray 2 → MP tray.
*10 With the purge count or flushing count displayed, press the 2, 7, 8 and 3 keys in this order
to reset the count.
*11 With the item being displayed, pressing the SET key cycles through purge types. For
details about the purge types, refer to Maintenance mode 76
(Maintenance mode 76)"
*12 With the item being displayed, pressing the SET key switches back to the last errors, one
by one. With an error code being displayed, pressing the
when the error occurred and the ambient temperature when the error occurred (only in the
case of a machine error).
*13 With the item being displayed, pressing the SET key cycles through Flat-bed scanning 
ADF simplex scanning  ADF duplex scanning  FAX scanning  Scanner scanning.
*14 With the item being displayed, pressing the SET key switches to the power-ON time at
which the counter has been reset.
Machine error history (Last 20 errors) *12
in this chapter).
5-66
(1.3.29 "Purge Operation
key toggles between the date
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