LeCroy WaveSurfer 400 Series User Manual

6.10.6 Internal Display Problem
VERIFY THAT THE CABLE IS
CONNECTED
BETWEEN THE CPU
BOARD AND THE TFT
THIS PROCEDURE ASSUMES THAT
VIDEO
IS PRESENT ON AN EXTERNAL
MONITOR
* CONNECTED TO THE REAR PANEL OR
THAT
THE FRONT PANEL BECOMES ACTIVE AS IF
THE
SCOPE HAD BOOTED UP AND IS
OPERATIONAL
IS +12V PRESENT?
MEASURE THE VOLTAGE AT THE
INPUT
TO THE TFT INVERTER
(PINS 1 & 2)
YES
NO
TROUBLESHOOT CAUSE
IS IT +12V?
MEASURE THE VOLTAGE AT PIN 5
OF THE INPUT CABLE TO THE
TFT INVERTER. (BACKLIGHT
CONTROL?)
YES
NO
REPLACE CPU BOARD
REPLACE INVERTER
REPLACE TFT & TOUCH SCREEN
*External monitor must be connected to rear panel connector before power is turned on to scope.
*External video will not be present after Windows starts booting unless it is enabled from within
Windows however it will be visible for ~30 seconds after power on..
VERIFY THAT THE CABLE IS
CONNECTED
BETWEEN THE CPU
BOARD AND THE TFT INVERTER
BOARD
Maintenance 6-53

LeCroy WaveSurfer 400 Series Specifications

General

Brand	LeCroy
Model	WaveSurfer 400 Series
Category	Test Equipment
Language	English