85 user attendance errors
 
85 user attendance error messages
 
Diagnostics and troubleshooting
 
173
 
The black imaging unit is nearly low. The 
photoconductor threshold has been reached.
 
See 
“Cartridge or photoconductor error service 
check” on page 174
.
 
The black imaging unit is nearly low. The 
user
‑
selected EWS set point has been reached.
 
The black imaging unit is low. The 
photoconductor threshold has been reached.
 
The black imaging unit is low. The user
‑
selected 
EWS set point has been reached.
 
The black imaging unit is very low. The 
photoconductor threshold has been reached.
 
The black imaging unit is very low. The 
user
‑
selected EWS set point has been reached.
 
Replace the black imaging unit. The black 
imaging unit has exceeded its recommended life 
span. The photoconductor threshold for “End of 
Life” has been reached. The black  developer 
may continue to function beyond end of  life.
 
Replace black imaging unit. The black imaging 
unit has exceeded its recommended life span. 
The user
‑
selected EWS set point has been 
reached. The black developer may continue to 
function beyond end of life.
 
Replace black imaging unit to resume printing. 
The photoconductor threshold for “Absolute End 
of Life” has been reached.