Before you start, Precautions (cont’d) – Sylvania DVR91DG User Manual
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5
EN
Precautions (cont’d)
Before you start
Recording
Playing
discs
Editing
Before
you
start
Connections
Getting
started
Changing
the
Setup
menu
Others
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Manufactured	under	license	from	Dolby	Laboratories.	“Dolby”	and	the	double-D	symbol	are	trademarks	
of	Dolby	Laboratories.
SERVICING
•	 Please	refer	to	relevant	topics	on	“Troubleshooting”	on	pages	72-75	before	returning	the	product.	
• If this unit becomes inoperative, do not try to correct the problem by yourself. There are no user-
serviceable parts inside. Turn off, unplug the power plug and please call our help line mentioned
on the front page to locate an Authorized Service Center.
CLEANING THE CABINET
•	 Use	a	soft	cloth	slightly	moistened	with	a	mild	detergent	solution.	Do	not	use	a	solution	containing	
alcohol, spirits, ammonia or abrasive.
CLEANING DISCS
•	 When	a	disc	becomes	dirty,	clean	it	with	a	cleaning	cloth.	Wipe	the	disc	from	the	center	to	out.	Do	
not wipe in a circular motion.
• Do not use solvents such as benzine, thinner, commercially available cleaners, detergent,
abrasive cleaning agents or antistatic spray intended for analog records.
CLEANING THE DISC LENS
•	 If	this	unit	still	does	not	perform	properly	although	you	refer	to	the	relevant	sections	and	to	
“Troubleshooting” in this Owner’s Manual, the laser optical pickup unit may be dirty. Consult your
dealer or an Authorized Service Center for inspection and cleaning of the laser optical pickup unit.
DISC HANDLING
•	 Handle	the	discs	so	that	fingerprints	and	dust	do	not	adhere	to	the	surfaces	of	the	discs.
• Always store the disc in its protective case when it is not used.
IR SIGNAL CHECK
If	the	remote	control	does	not	work	properly,	you	can	test	if	the	remote	control	sends	out	the	infrared	
signal with AM radio or a digital camera (including built-in camera of cellular phone). It will help to
define the cause of malfunction.
•
With an AM radio:
Tune an AM radio to a band with no broadcasting. Press a button on remote control toward the
radio. Sound will be fluttering when you press any key and the radio receives the signal. This
means the remote control unit is working.
•
With a digital camera (including built-in camera of cellular phone):
Direct a digital camera to remote control, press and hold a button on remote control. If infrared
light appears through digital camera, the remote is working.
Maintenance
Dolby Digital Recording
“Dolby® Digital Recording enables consumers to record high-quality video with stereo sound on
recordable DVD discs. The technology, when utilized instead of PCM recording, also saves record-
able disc space, allowing for higher video resolution or extended recording time on each DVD.
DVDs created using Dolby Digital Recording will play back on all DVD-Video players.”
Note: This is true when the players are compatible with actual recordable DVD discs.
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