How do you clean the coffeemaker? The screen at the top also needs to be cleaned.

There is no self clean button on mine, and I have done the above with vinegar and water......what next?

Decalcification
Decalcification refers to the removal of calcium
deposits which form over time on the metal
parts of the coffeemaker.
For best performance from your Brew Central
Thermal™ Coffeemaker, decalcify the base unit
from time to time. The frequency depends upon
the hardness of your tap water and how often
you use the coffeemaker. The flashing Clean
light will indicate when you should clean your
coffeemaker.
If the Clean light begins to flash when the
coffeemaker is turned on, it is telling you that
the calcium buildup is interfering with the
functioning of your coffeemaker and the flavor
of your coffee. To clean, fill the water reservoir to
capacity with a mixture of ¹⁄³ white vinegar and
²⁄³ water. Press the Clean button. When the self
clean light glows, turn the coffeemaker on by
pressing the on/off button. The Clean light will
shine steadily. The coffeemaker is now in Clean
mode. One cycle should be sufficient to
adequately clean the coffeemaker. When the
cycle is completed and the five beeps sound,
the coffeemaker will shut off. Turn the
coffeemaker ON to see if the Clean light
continues to flash. If it does, turn it to OFF and
then repeat the cleaning procedure with a fresh
solution of vinegar and water.
If the Clean light no longer flashes, turn the
coffeemaker to OFF and then run one cycle of
fresh cold water through the unit before using
the unit again to brew coffee.
Notes on the Clean F unction
Pressing the Clean button cancels all other
settings. If it is pressed accidentally, press it
again to return the coffeemaker to all its
previous settings. Pressing ON/OFF will also exit
the Clean Mode and turn the coffeemaker OF

You may find this a useful site in the future:

http://www.cuisinart.ca/cuisinart_product.php?item_id=63&product_id=58&cat_id=2

Your Instruction Booklet:

http://www.cuisinart.ca/pdf/ibs/en/DCC-1200C_en.pdf

It is likely that calcified deposits are gradually breaking away as you now use the coffee maker. Is your Self Clean light flashing? Instructions on decalcification and cleaningh begin on page 5 of your booklet.

To clean, fill the water reservoir to capacity with a mixture of 1/3 white vinegar and 2/3 water. For your problem, let the vinegar solution sit in the reservoir for 30 minutes to an hour before beginning the cleaning cycle.

Press the Self Clean button. When the self clean light glows, turn the coffeemaker on by pressing the ON button. The self clean light will shine steadily. The coffeemaker is now in Self Clean mode. One cycle should be sufficient to adequately clean the coffeemaker. When the cycle is completed and the five beeps sound, the coffeemaker will shut off. Turn the coffeemaker ON to see if the Self Clean light continues to flash. If it does, turn it to OFF and then repeat the cleaning procedure with a fresh solution of vinegar and water.

If the Self Clean light no longer flashes, turn the coffeemaker to OFF and then run one cycle of fresh cold water through the unit before using the unit again to brew coffee.

If you continue to see debris, unfortnately you will have to repeat until clear.

Decalcification
Decalcification refers to the removal of calcium
deposits which form over time on the metal
parts of the coffeemaker.
For best performance from your Brew Central
Thermal™ Coffeemaker, decalcify the base unit
from time to time. The frequency depends upon
the hardness of your tap water and how often
you use the coffeemaker. The flashing Clean
light will indicate when you should clean your
coffeemaker.
If the Clean light begins to flash when the
coffeemaker is turned on, it is telling you that
the calcium buildup is interfering with the
functioning of your coffeemaker and the flavor
of your coffee. To clean, fill the water reservoir to
capacity with a mixture of ¹⁄³ white vinegar and
²⁄³ water. Press the Clean button. When the self
clean light glows, turn the coffeemaker on by
pressing the on/off button. The Clean light will
shine steadily. The coffeemaker is now in Clean
mode. One cycle should be sufficient to
adequately clean the coffeemaker. When the
cycle is completed and the five beeps sound,
the coffeemaker will shut off. Turn the
coffeemaker ON to see if the Clean light
continues to flash. If it does, turn it to OFF and
then repeat the cleaning procedure with a fresh
solution of vinegar and water.
If the Clean light no longer flashes, turn the
coffeemaker to OFF and then run one cycle of
fresh cold water through the unit before using
the unit again to brew coffee.
Notes on the Clean F unction
Pressing the Clean button cancels all other
settings. If it is pressed accidentally, press it
again to return the coffeemaker to all its
previous settings. Pressing ON/OFF will also exit
the Clean Mode and turn the coffeemaker OFF.
Directly from the DCC-2400STR manual

From the manual I found online here.
CLEANING AND MAINTENANCE COMPLETELY CLEAN AND DRY ALL PARTS AFTER EVERY USE. Always turn coffeemaker OFF and remove the plug from the electrical outlet before cleaning. Open the reservoir lid*. Remove the grinder basket lid by using the recessed area on each side of the lid. Then remove Grinder Basket. Open Filter Basket Door. Remove Filter Basket Cover, Filter Basket and Filter Basket holder. The grinder basket, grinder basket lid, filter basket and filter basket cover can be washed in warm soapy water and rinsed thoroughly, or cleaned in the upper rack of the dishwasher. Dry all parts after every use. Do not put any water in the unit once the grinder basket has been removed. Wipe the area under the grinder basket with a damp cloth. If water gets into the grinder motor, the motor may become damaged and may malfunction.
DECALCIFICATION Decalcification refers to removing the calcium deposits which form over time on the metal parts of the coffeemaker. For best performance from your coffeemaker, decalcify the base unit from time to time. The frequency depends upon the hardness of your tap water and how often you use the coffeemaker. To clean, fill the water reservoir to capacity with a mixture of 1/3 white vinegar and 2/3 water. Turn the coffeemaker on by pressing the ON button. One cycle should be sufficient to adequately clean the coffeemaker. When the cycle is completed and the five beeps sound, turn coffeemaker off. Repeat operation, this time using fresh cold water.

Unplug the machine for 20 minutes or longer - don't skimp on the amount of time, or it won't work. After 20 minutes, plug the coffeemaker back in, and you will see that the self-clean light is now off.

Unplug the coffeemaker for 1 hour or longer - it should reset the coffee maker and get rid of that self-clean light.

-Tha Mp3 doctor

I copy pasted from the pdf..

Christian.

Self Cleaning:
If the Self Clean light begins to flash when
the coffeemaker is turned on, it is telling you
that the calcium buildup is interfering with the
functioning of your coffeemaker and the flavor
of your coffee. To clean, fill the water reservoir
to capacity with a mixture of 1/3 white vinegar
and 2/3 water. Press the Self Clean button.
When the self clean light glows, turn the
coffeemaker on by pressing the flip switch to
ON. The Self Clean light will shine steadily.
The coffeemaker is now in Self Clean mode.
One cycle should be sufficient to adequately
clean the coffeemaker. When the cycle is
completed and the five beeps sound, the coffeemaker
will shut off. Turn the coffeemaker
ON to see if the Self Clean light continues to
flash. If it does, turn it to OFF and then repeat
the cleaning procedure with a fresh solution of
vinegar and water.
If the Self Clean light no longer flashes, turn
the coffeemaker to OFF and then run one
cycle of fresh cold water through the unit
before using the unit again to brew coffee.
Notes on the Self Clean Function
Pressing the Self Clean button cancels all
other settings. If it is pressed accidentally,
press it again to return the coffeemaker to all
its previous settings. Pressing ON/OFF will
also exit the Self Clean Mode and turn the
coffeemaker OFF.

According to the manual for IS series Mr. Coffee for programmable models:
1. Prepare one batch of Mr. Coffee coffeemaker cleaner. Pour the mixture into the water reservoir. Remove the water filtration disk from the machine.
4 cups or 20 oz. of undiluted, white household vinegar may be used as a substitute for the cleaner.
2. Place an empty paper filter or permanent filter into the filter basket and close.
3. Place the empty decanter back in the unit, centered on the warmer plate.
4. Press SELECT button until the red CLEAN indicator light is illuminated. For your convenience the cleaning cycle is automatic. The entire cycle will take 45-60 min to complete. During the cleaning your coffeemaker will:

• Slow brew approx. 3 cups of cleaning solution.
• Pause for 30 min (the CLEAN light will remain on to alert you that the process is active). At the end of the pause period your coffeemaker will beep.
• After 30 mins your coffeemaker will brew the remainder of the cleaning solution.
• When complete, the CLEAN light will turn off and your coffeemaker will automatically beep and shut off.

5.Discard the cleaning solution and rinse the decanter thoroughly with clean water.
6. Fill the water reservoir with clean fresh water.
7. Place the empty decanter back on the coffeemaker, centered on the warmer plate.
8. Remove and discard the filter used during the cleaning cycle and replace it with a fresh paper filter. If a permanent filter was used during cleaning, remove it and rinse it thoroughly before replacing it in the filter basket.
9.Begin brewing and allow the full brew cycle to complete.
Repeat steps 6-9 one more time.