Iot Diagnosis - Brother HL-4000CN Service Manual

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Details of the control panel test
For a control panel check, each button is pressed to see whether the three LED
indicator lights go on or off and how the LCD panel display changes.
The table below lists the relationships between the buttons and the LED indicator
lights and LCD panel display.
Button
Form Feed/Set
Menu
Job Cancel/Back
and
4.8

IOT Diagnosis

Function: Executing an IOT-related diagnosis
Diagnostic items
Item
Digital Input test
Digital Output test
Power save mode
NVM setting
NVM Edit
NVM setting
NVM Save
NVM setting
NVM Load
NVM setting
NVM Print Info
Ready
Ready
Ready
Ready
Ready
Ready
Ready
(End of test)
(together)
Performs a digital input component test.
Performs a digital output component test.
Performs Power save mode
Reads or writes NVM values.
Saves IOT NVM information into ESS.
Loads IOT NVM information into ESS.
Prints IOT NVM information.
V-44
LED
Error "UP" display
Error "DOWN" display
Error "LEFT" display
Error "RIGHT" display
Error "SET" display
Error "MENU" display
Error "STOP" display
Description
LCD
(End of test)
: Not lit : Lit