Troubleshooting And Specifications; Troubleshooting - Sharp LC-M3700 Operation Manual

Wide lcd monitor

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Table Of Contents

Table of Contents

Before calling for repair services, make sure following checks for possible remedies to the

encountered symptoms.

Problem

Remote control does not work.

Right

Left

sound

· · · ·

Menu screen does not display.

Monitor buttons do not work.

RS-232C command does not work.

There is no picture or

sound.

There is no picture.

Sound from left and right

speakers is reversed.

Sound is heard from

only one side.

There is a picture but

no sound

Faint color or bad hue.

Check item

»Is the AC cord disconnected?

»Is the Main POWER turned off or is the monitor in

standby mode?

»Make sure external devices are connected properly.

»Make sure correct INPUT is selected.

»Make sure the connected external device is operating

(playing back).

»Has the correct terminal been selected with Input selection?

»The signal may be incompatible.

»Make sure sync signals (HD and VD) are connected

correctly (INPUT3 RGB mode).

When using INPUT3 (RGB) or PC (analog) input, a sync

signal is necessary if the signal does not employ Sync

on Green.

»Are the batteries inserted with polarity (

»Are the batteries worn out?

»Point the remote control toward the monitor's remote

control sensor.

»Is Control lock activated?

»Are audio cables connected properly?

»Make sure audio cables for external speakers are

connected properly: left and right cables may be

reversed or one of the two cables may not be connected.

»The monitor speaker output is monaural.

»Make sure the volume is not set to minimum.

»S-video, COMPONENT-video and RGB terminals are for

video only. Make sure audio cables are also connected.

»Is the audio corresponding to the selected image being

input?

»Is audio output when monitor speaker output is set to

"On"? If so, the problem is located subsequent to the

external speaker output terminal. If not, the problem is in

the input terminal or settings.

»Check "Color" and "Tint" adjustments.

»When using INPUT3 input, make sure the connection

sequence is correct.

»Is Control lock activated?

»Are matching settings (for baud rate etc.) used on the

PC side?

»Is Control lock activated?

»If monitors are chained, make sure connection between

terminals are correct. (The side closer to the PC should

be RS-232C INPUT, and the side further from the PC

should be RS-232C OUTPUT.)

»Make sure the command is correct.

»Did you enter carriage return code (0D

each command?

»Is cross cable used for RS-232C connection? (Straight

cable cannot transmit data).

»Did you receive a response for the previous command?

(Make sure OK or ERR message was returned.)