Lexmark CS720dte

• Code: 961.xx
• Description: RAM memory error: slot 1 RAM is bad.
• Remedy: Step 1 Check the memory module on the controller board for proper installation and damage, and reseat if necessary. Is the memory module properly installed and free of damage? Go to step 2. Go to step 3. Step 2 Reset the printer. Does the problem remain? Go to step 3. The problem is solved. Step 3 Replace the memory module. Does the problem remain? Contact the next level of support. The problem is solved.

• Code: 964.xx
• Description: Download emulation cyclic redundancy check (CRC) failure has occurred. A checksum failure detected in the emulation header or emulation file.
• Remedy: Step 1 Disable the download emulation, and then program the download emulation into the firmware card again. Does the error remain? Go to step 2. The problem is solved. Step 2 Replace the firmware card and download the emulation to the new card. Does the error remain? Contact the next level of support. The problem is solved.

• Code: 975.xx
• Description: Network error: unrecognizable network port.
• Remedy: Replace the standard network card or the card in the specified slot.

• Code: 976.xx
• Description: Unrecoverable software or error in network or network card x.
• Remedy: Step 1 Check if the network card is installed. Is the network card installed? Go to step 2. Go to step 3. Step 2 Make sure that the network card is properly installed, and reseat if necessary. Does the problem remain? Contact the next level of support. The problem is solved. Step 3 Replace the controller board. See “Controller board removal”. Does the problem remain? Contact the next level of support. The problem is solved.

• Code: 978.xx
• Description: Bad checksum while programming Standard Network or Network Card x port.
• Remedy: Step 1 Make sure that you have downloaded the code in binary mode and not in ASCII, and then reprogram the network card. Does the problem remain? Go to step 2. The problem is solved. Step 2 Check if the network card is intalled. Is the network card installed? Go to step 3. Go to step 4. Step 3 Make sure that the network card is properly installed, and reseat if necessary. Does the problem remain? Contact the next level of support. The problem is solved. Step 4 Replace the controller board. See “Controller board removal”. Does the problem remain? Contact the next level of support. The problem is solved.

• Code: 979.xx
• Description: Flash parts failed while programming the Standard Network or Network Card x port.
• Remedy: Step 1 Check if the network card is installed. Is the network card installed? Go to step 2. Go to step 3. Step 2 Make sure that the network card is properly installed, and reseat if necessary. Does the problem remain? Contact the next level of support. The problem is solved. Step 3 Replace the controller board. See “Controller board removal”. Does the problem remain? Contact the next level of support. The problem is solved