LeCroy WAVERUNNER 6000 SERIES - Page 148

6-52 Maintenance
6.8.13 Vertical Accuracy Problem
I S V ERTICAL
A CCURACY
C ORRECT ?
Y ES
N O
V ERIFY THAT ACCURACY
IS
GOOD ACROSS ALL
V/DIV SETTINGS
I S
INPUT
IMPEDANCE
50 O HMS ?
Y ES
T ROUBLESHOOT
REASON
OR REPLACE
A CQUISITION C ARD
N O
50 O HMS OR
1 MO HM I NPUT ?
50 O HM
I S
INPUT
IMPEDANCE
1M O HMS ?
Y ES
T ROUBLESHOOT
REASON
OR REPLACE
A CQUISITION C ARD
N O 1M
M EASURE L EAKAGE
C URRENT AT I NPUT
BNC?
I S IT <1 M V?
C LEAN F RONT
C IRCUITRY ESPECIALLY
NEAR
RELAYS
N O
P ERFORM F ACTORY
O FFSET C URVE
C ALIBRATION
Y ES
P ERFORM F ACTORY
O FFSET C URVE
C ALIBRATION
T HIS PROCEDURE ASSUMES THAT THE
SYSTEM
IS CAPABLE OF PASSING A CLEAN ,
CONTINUOUS SINEWAVE ON EACH CHANNEL