3M MP7640i/MP7740i manual Regarding the Indicator Lamps

Models: MP7640i/MP7740i

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WHAT TO DO WHEN YOU THINK A MACHINE DEFECT HAS OCCURRED (continued)

WHAT TO DO WHEN YOU THINK A MACHINE DEFECT HAS OCCURRED (continued)

Regarding the Indicator Lamps

Lighting and flashing of the POWER indicator, the LAMP indicator, and the TEMP indicator have the meanings as described in the Table below. Please respond in accordance with the instructions within the Table.

POWER

LAMP

TEMP

Description

indicator

indicator

indicator

 

 

 

 

 

The orange

Turned OFF

Turned OFF

The STANDBY mode is set

lamp is lighted

(Not lighted)

(Not lighted)

 

 

 

 

 

Flashing of the green lamp

Turned OFF

Turned OFF

The unit is warming up. Please wait.

 

 

 

 

The green lamp is lighted

Turned OFF

Turned OFF

The unit is in an ON state. Ordinary operations may be performed.

 

 

 

 

Flashing of the orange lamp

Turned OFF

Turned OFF

The unit is cooling down. Please wait.

 

 

 

 

 

 

 

The unit is cooling down. Please wait.

Blinking of the

-

-

A certain error has been detected. Wait until the POWER indicator lamp has finished

red lamp

flashing, and then perform the proper response measure using the item descriptions

 

 

 

 

 

below as reference.

 

 

 

 

 

 

 

The lamp does not light.

The red lamp

The red lamp

Turned

There is a possibility that the interior portion has become heated. Turn the power OFF and wait

is lighted, or

approximately 20 minutes. After the main unit has cooled down, please confirm whether or not

is lighted

OFF

there is blockage of the air passage aperture, whether or not the filter is dirty, and/or whether or

blinks

 

 

not the peripheral temperature exceeds 35°C, etc. After performing any needed maintenance,

 

 

 

turn the power ON again; if the same display is displayed, then please change the lamp.

 

 

 

 

The red lamp

 

 

Either there is no lamp and/or lamp cover, or either of these has not been properly fixed

Blinking of the

Turned

(attached). Turn the power OFF and wait approximately 45 minutes. After the main unit has

is lighted, or

sufficiently cooled down, please make confirmation of the attachment state of the lamp and

red lamp

OFF

blinks

lamp cover. After performing any needed maintenance, turn the power ON again; if the same

 

 

 

 

 

display is displayed, then please contact a sales store or a service company.

 

 

 

 

The red lamp

Turned

Blinking of the

The cooling fan is not operating. Turn the power OFF and wait approximately 20 minutes. After the

is lighted, or

main unit has cooled down, please make confirmation that no foreign matter has become caught in

OFF

red lamp

the fan, etc. After performing any needed maintenance, turn the power ON again; if the same display

blinks

 

 

is displayed, then please contact a sales store or a service company.

 

 

 

 

 

 

 

There is a possibility that the interior portion has become heated. Turn the power OFF and wait

The red lamp is

Turned

The red lamp is

approximately 20 minutes. After the main unit has cooled down, please confirm whether or not

lighted, or

there is blockage of the air passage aperture, whether or not the filter is dirty, and/or whether or

OFF

lighted

not the peripheral temperature exceeds 35°C, etc. After performing any needed maintenance,

blinks

 

 

turn the power ON again; if the same display is displayed, then please contact a sales store or a

 

 

 

service company.

The green lamp

Alternative blinking

There is a possibility that the interior portion has become overcooled. Please use the unit within

the usage temperature parameters (0°C to 35°C). After performing any needed maintenance,

is lighted

with the red lamp

turn the power ON again; if the same display is displayed, then please contact a sales store or a

 

 

 

service company.

The green

Simultaneous blinking

This is a notification that it is time to clean the filter.

After cleaning the filter, operate the FILTER TIME portion of the OPTION Menu, and perform

lamp is lighted

with the red lamp

reset of the FILTER TIME.

 

 

 

 

 

 

 

NOTE

When the interior portion has become overheated, for safety purposes, the power source is automatically turned OFF, and the indicator lamps may also be turned OFF. Press the “” (power OFF) side of the main power switch, and wait for approximately 20 minutes. Please then use the unit only after having first confirmed that the unit has sufficiently cooled down.

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3M MP7640i/MP7740i manual Regarding the Indicator Lamps, WHAT TO DO WHEN YOU THINK A MACHINE DEFECT HAS OCCURRED continued