Precautions During Replacement - Epson AcuLaser C8600 Reference Manual

If you continue to use the printer without replacing consumable
products and a consumable product reaches the end of its service
life, the printer stops printing and displays the following
messages on the LCD panel or the window of the EPSON Status
Monitor 3 utility. When this happens, the printer cannot resume
printing until you replace the depleted consumable products.
Control panel
message
*
* C, M, Y, and/or K are indicated for the color of the toner to be replaced. For example,
the message
Note:
Messages appear for each consumable product at a time. After replacing
a consumable product, check the LCD panel for replacement messages
for other consumable products.

Precautions During Replacement

You need to replace the following consumable products when a
notice message is displayed on the LCD panel or the window of
the EPSON Status Monitor 3 utility.
Keep the following in mind when replacing consumable
products.
Provide enough space for the replacement procedure. You
will have to open some parts (such as the front cover) of the
printer when you are replacing consumables.
256 Replacing Consumable Products
Description
The toner cartridge is empty.
The photoconductor unit has
reached the end of its service life.
The waste toner collector is full of
toner.
means that you need to replace the yellow toner cartridge.