HP Color LaserJet Pro MFP M178-M181 - User Guide
Table 9-2 Control-panel light patterns (continued)
Light status Error code State of the printer Action
Er/82 The printer has experienced a bad 
code signature.
Press Start Mono Copy   to accept the signature, or 
press Cancel   to stop the upgrade.
Er/83 The printer has canceled a bad code 
signature upgrade.
Press Start Mono Copy   to continue.
Er/90 The printer has experienced an 
engine cable error.
Press Start Mono Copy   to continue.
If the error persists, contact HP customer support.
Er/91 The printer has experienced a 
scanner cable error.
Press Start Mono Copy   to continue.
If the error persists, contact HP customer support.
Er/92 The printer has experienced a 
control-panel cable error.
Press Start Mono Copy   to continue.
If the error persists, contact HP customer support.
The Attention light is 
blinking and the 
Toner light is on.
Er/08 The toner cartridge is very low. Replace the toner cartridge.
Er/10 Multiple supplies are low. Replace the supplies.
The Attention and 
Toner lights are 
blinking.
Er/07 The toner cartridge is missing or 
incorrectly installed.
Install or reinstall the toner cartridge.
Er/11 The toner cartridge is incompatible 
with the printer, possibly due to a 
missing or damaged memory chip.
Replace the toner cartridge.
Er/13 Multiple supplies are incompatible 
with the printer, possibly due to a 
missing or damaged memory chip.
Replace the supplies.
Er/14 The toner cartridge has been 
protected on another printer.
Replace the toner cartridge.
Er/16 Multiple supplies have been 
protected on another printer.
Replace the supplies.
Er/17 An unauthorized toner cartridge is 
installed.
Replace the toner cartridge.
Er/19 Unauthorized supplies are installed. Replace the supplies.
84 Chapter 9 Solve problems ENWW










