JVC G1500 manual Maintenance

Symptom	Probable cause	Corrective action	Page
The upper part of the	• While computer system signal is input,	• Input separate sync signals for vertical
video image bows or	isn’t a sync signal for composite sync	sync (V) and horizontal sync (H)	12
distorts.	(Cs) or G on sync being input?	signals.
	• Isn’t signal with much jitter or skew	• Input signals with little jitter or distor-	—
	distortion being input to a video deck?	tion.
	• Is the source setting correctly selected?	• Set the source setting to AUTO. If the
	Isn’t a wrong source (forced mode)	problem still persists, set it to the	46
	selected?	correct dedicated source (forced
		mode).
Video image and	• Are video picture and audio turned off	• Turn on video picture and audio by
audio sound suddenly	by pressing the AV MUTING button on	pressing the remote control’s AV	29
go out.	the remote control unit?	MUTING.
Remote control unit	• Are batteries installed correctly?	• Match the polarities of batteries	14
does not work.		correctly (+ to + and - to -).
	• Are batteries exhausted?	• Replace with new batteries.	14
	• Is there a shielding object between the	• Remove any shielding objects.
	remote control unit and the remote		18
	sensor?
	• Is the distance too long?	• Use the remote control unit at a nearer	18
		point.

*This projector is equipped with a microcomputer that may operate abnormally due to interference from external components. If this happens, turn off the main power and disconnect the power cord from the wall AC outlet. Then reconnect the power cord to AC outlet and turn on the main power again.

(For the turning on and off the power, see pages 25 to 26.)

Maintenance

• Stains on the cabinet

Should be wiped off with a soft cloth. If the cabinet is heavily stained, wipe it with a cloth soaked in water-diluted neutral detergent and wrung well, then wipe clean with a dry cloth.

•Since the cabinet may deteriorate in quality, become damaged or get its paint peeled off, be careful about the following:

–Do not wipe it with a hard cloth.

–Do not wipe it strong.

–Do not wipe it with thinner or benzene.

–Do not apply any volatile substance such as insecticides to it.

–Do not allow any rubber or vinyl article to remain in contact with it for a long time.

•Stains on the lens

Sould be cleaned off with commercially available blowers or lens cleaning paper (for cleaning glasses and cameras). Do not use liquid cleaning agents. This could cause the surface coating to be removed.

Do not rub or hit the lens as its surface is prone to damage.

ENGLISH

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