Phenomena That May Easily Be Mistaken for Machine Defects

Before requesting repair, check in accordance with the following chart. If the situation cannot be corrected, then contact your dealer.

Phenomenon

Cases not involving a machine defect

Items to be confirmed

Reference

Page(s)

 

 

 

 

 

 

 

 

The main power source is not ON.

Turn on the main power.

3, 14

 

 

 

 

The electrical power cord is not plugged in.

Correctly connect the power cord.

 

 

 

 

 

 

Power does not

 

Be sure to press the “O” (power OFF) side

 

come ON

The main power source has been

of the main power switch, and leave this OFF

14

 

interrupted during operation, such as by

for approximately 20 minutes. After the unit

 

a power outage (blackout), etc.

has sufficiently cooled down, turn ON the

 

 

 

power source.

 

 

 

 

 

No sound or

The input changeover settings

Select the input signal, and

15

are mismatched.

correct the settings.

pictures are

 

 

 

 

 

 

 

outputted

No signal is being inputted.

Correctly connect the connection cord.

10, 11

 

 

 

 

 

The electrical wiring to this unit

Correctly connect the connection cord.

10, 11

 

is not correctly connected.

Pictures are

 

 

 

 

 

The volume setting has been set at (or

 

17

displayed, but no

Adjust the VOLUME setting to a higher level.

adjusted to) an extremely low level.

sounds are heard

 

 

 

 

 

The MUTE mode is the current setting.

Press the MUTE button to release

17

 

 

 

(change) the MUTE mode setting.

 

 

The electrical wiring to this unit

Correctly connect the connection cord.

10, 11

Sounds are

is not correctly connected.

 

 

heard, but no

The brightness setting has been set at

Adjust the BRIGHT setting to a

24

pictures are

(or adjusted to) an extremely low level.

brighter level.

 

displayed

 

 

 

The Slide lens door has not been removed.

Remove the Slide lens door.

14

 

 

 

 

 

Colors have a faded-

 

Perform picture adjustments by changing the

25

out appearance

Color depth setting or color tone setting

COLOR BAL R, the COLOR BAL B, and/or the

Color tone is poor

 

TINT settings, etc.

 

 

 

 

 

 

The brightness setting and/or contrast

Perform picture adjustments by changing the

24

 

setting has not been properly adjusted.

BRIGHT and/or CONTRAST settings, etc.

 

Pictures appear

The WHISPER mode is the current

Change (by releasing) from the

28

dark

setting.

WHISPER mode.

 

 

Lamp is approaching the end of its

Exchange the old lamp with a new

24, 25

 

product lifetime.

lamp.

 

 

 

 

 

Pictures appear

Either the FOCUS setting or the H

Adjust the FOCUS and H PHASE settings.

15, 25

blurry

PHASE is not properly adjusted.

 

 

 

 

 

 

NOTE

Although bright spots or dark spots may appear on the screen, this is a unique characteristic of liquid crystal displays, and such do not constitute or imply a machine defect.

36

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3M MP7640i/MP7740i manual Phenomena That May Easily Be Mistaken for Machine Defects, Phenomenon, Items to be confirmed

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