LeCroy WaveSurfer 400 Series Service Manual page 143

Front Panel Controls or Touch Screen Does not Operate (continued)
B
O
PEN DEVICE MANAGER
FROM WITHIN WINDOWS
O H
PEN UMAN
I
NTERFACE DEVICES
UNPLUG ANY EXTERNAL
( ) USB
FRONT OR REAR
DEVICES
V H
ERIFY UMAN
I
NTERFACE DEVICES ARE
AS SHOWN
A
RE THEY
?
CORRECT
Y
ES
R
EPLACE ENCODER
BOARD
V USB
ERIFY CABLE IS
CONNECTED BETWEEN
N
O
P
ROCESSOR BOARD AND
ENCODER BOARD
I ?
S IT CORRECT
Y
ES
R
EPLACE ENCODER
BOARD
R P
EPLACE ROCESSOR
BOARD
C
N
ORRECT CABLE
O
Maintenance 6-57