Toshiba D-R4SU Service Manual page 2

LASER BEAM CAUTION LABEL
When the power supply is being turned on, you may not remove this laser cautions label. If it removes, radiation of a laser
may be received.
PREPARATION OF SERVICING
Pickup Head consists of a laser diode that is very susceptible to external static electricity.
Although it operates properly after replacement, if it was subject to electrostatic discharge during replacement,
its life might be shortened. When replacing, use a conductive mat, soldering iron with ground wire, etc. to
protect the laser diode from damage by static electricity.
And also, the LSI and IC are same as above.
Soldering iron
with ground wire
or ceramic type
·
Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories.
·
"DTS" and "DTS Digital Out" are trademarks of Digital Theater Systems, Inc.
·
Manufactured under license from QSound Labs, Inc. U.S. patent Nos. 5,105,462, 5,208,860 and 5,440,638 and various foreign counterpart. Copyright
QSound Labs, Inc. 1998-2002. QXpander
Ground conductive
wrist strap for body.
Conductive mat
TM is a trademark of QSound Labs, Inc. All rights reserved.
9
1M
The ground resistance
between the ground line
and the ground is less than 10
9
.