MX-M850 (serv.man49). User Manual - Sharp Copying Equipment User Guide / Operation Manual. Page 85

Is the main power indicator lit?

If the main power indicator is not lit, make sure that the 
power plug is firmly inserted in the power outlet, switch 
the main power switch to the "on" position. Hold down 
the [POWER] key (

) and turn on the power.

☞

 (page 18)

Did you just power on the machine?

After the [POWER] key (

) is turned on, the machine 

requires some time to complete warmup operation.
During this time functions can be selected, however, a 
job cannot be run. Wait until a message appears 
indicating that the machine is ready.

Is the [POWER SAVE] key (

) 

blinking?

Auto Power Shut-Off mode has activated. To return the 
machine to normal operation, press the [POWER SAVE] 
key (

).

☞

 (page 18)

Is a cover open or a device separated 
from the machine?

A warning message will appear when a cover is open or 
a device is separated from the machine. Read the 
message and take appropriate action.

Did login fail three times in a row?

When "A Warning when Login Fails" is enabled in the 
system settings (administrator) and login fails 3 times in 
a row, a warning will be displayed and operation will 
lock for 5 minutes. After operation unlocks, log in using 
the correct user information. (If you do not know your 
user information, contact your administrator.)

Does a message appear indicating that 
Auto Login failed?

Auto Login failed due to a problem on the network. 
Contact your administrator.
If you are the administrator, touch the [Admin Password] 
key, log in as an administrator, and temporarily change 
the auto login settings in the system settings 
(administrator). (Restore the changed settings to their 
original state after the network problem has been 
solved.)

Does the message "Call for service. 
Code:xx-xx*." appear in the touch 
panel?
*Letters and numbers appear in xx-xx.

Make sure that the LINE indicator is not lit and that the 
DATA indicator is not blinking or lit and then switch off 
the [POWER] key (

) and the main power switch. 

Wait at least 10 seconds and then switch the main 
power switch and the [POWER] key (

) back on in 

that order.

☞

 (page 18)

If the message still appears after switching the 
[POWER] key (

) and main power switch off and on 

several times, it is likely that a failure has occurred that 
requires service. In this event, stop using the machine, 
unplug the power plug, and contact your dealer or 
nearest SHARP Service Department. (When contacting 
your dealer or nearest SHARP Service Department, 
inform them of the displayed error code.)