LeCroy WaveSurfer 400 Series

6-56 Maintenance
Front Panel Controls or Touch Screen Does not Operate (continued)
B UTTON
D OES
THE FRONT PANEL
OPERATE
AT
ALL
?
K NOBS
Y ES
R EPLACE DEFECTIVE
ENCODERS
P ROBLEM
WITH
B UTTONS OR
KNOBS
?
A LL OR SOME ?
R EPLACE ENCODER
BOARD
S OME
All
N
OTE : P USH PORTION OF A
KNOB
IS CONSIDERED A BUTTON
FOR
THIS PROCEDURE .
A LL OR SOME ?
S OME
All
R EPLACE ENCODER
BOARD
R EPLACE K EYPAD
BOARD
R EPLACE ENCODER
BOARD
A