Speaker Volume Adjustment; Troubleshooting And Flow Charts; Introduction; Repair Level - LeCroy WaveSurfer 400 Series Service Manual

Color digital oscilloscopes
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6.9.3.10 Speaker volume adjustment

Adjustment method
Fully turn R18 on the PCI Board so that the volume becomes a maximum.
Adjust the speaker volume using the startup sound emitted when the OS
(WindowsXPe) starts up, or by opening the "Control Panel" and using
"Sounds and Audio Devices – Sounds" or the like.

6.10 Troubleshooting and Flow Charts

Introduction

6.10.1
he troubleshooting information contained in this section is intended for use
T
by qualified personnel having a basic understanding of electronics (analog and
digital). In order to simplify servicing and minimize downtime, the following list of
possible symptoms, likely causes, and troubleshooting steps have been prepared.
The first step in troubleshooting is to check for obvious items like blown fuses.
The power supply is the next item to check before proceeding to more detailed
troubleshooting, since noise or low power supply voltages can cause a variety of
digital and analog problems.

6.10.2 Repair Level

Most procedures in this section will allow troubleshooting down to the BOARD
LEVEL.
Defective circuit boards will be repaired or exchanged by the regional LeCroy
service office or the local representative.
Maintenance 6-47

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