Single-Function: CS720, CS725, CS727, CS728, C4150, CS820, CS827 and C6160
Multifunction: CX725, CX727, XC4140, XC4143, XC4150, XC4153, CX820, CX825, CX827, CX860, XC6152, XC6153, XC8155, XC8160 and XC8163
Failure to enter sleep mode is accompanied by the message, "CANNOT ENTER SLEEP MODE: The devcie is busy and cannot enter Sleep Mode." Also, a secondary symptom exhibiting a delay may be seen when exiting Sleep Mode.
Reboot the device or awaken it to return to a Ready state.
Check your printer's firmware level. xref_Check_xref
for general instructions. xref_Check_xref
Based on your device's existing firmware-code level, you can update to the firmware levels suggested below:
PP.031.088 or earlier
Update to PP.033.098 or later. (FW3.3.98)
PP.31.089 or later, which indicates FW3.3 may not have all implemented fixes.
PE-firmware release xx.033.117 or later.
for general update instructions.
Still Need Help?
Have the following available when calling Lexmark Technical Support;
Printer serial number
LEGACY ID: SO8315