LeCroy WaveSurfer 400 Series User Manual

6-50 Maintenance
6.10.4 Power Supply Problem
P RESS THE FRONT
PANEL
POWER SWITCH
A RE THE
FANS RUNNING ?
Y ES
N O
V ERIFY THE VOLTAGES
ON
EACH OF THE
CONNECTORS
LISTED IN
SECTION
4.6.4.
A RE ANY OF THE
VOLTAGES
MISSING
N O
Y ES
V ERIFY THAT THE
SUPPLY
IS NOT BEING
LOADED
DOWN BY ONE
OF
THE BOARDS .
R EPLACE THE
ASSEMBLY
LOADING
DOWN
THE SUPPLY
VOLTAGE
I S IT BEING
LOADED
DOWN
R EPLACE THE POWER
SUPPLY
Y ES
N O
R EPLACE THE POWER
SUPPLY
M OMENTARILY SHORT
PINS
4 & 5 OF THE
FRONT
PANEL SWITCH
BOARD
USING A PAIR OF
TWEEZERS
D ID
THE
UNIT TURN
ON
?
V ERIFY POWER SWITCH
CABLE
IS PLUGGED INTO
CPU BOARD
Y ES
R EPLACE POWER
SWITCH
S HORT P IN 13 TO PIN
14 OF THE P ROCESSOR
BOARD
POWER
CONNECTOR
TOEGTHER
USING
A PAIR OF
TWEEZERS
D ID
THE
UNIT TURN
ON
?
R EPLACE PROCESSOR
BOARD
M EASURE VOLTAGE
BETWEEN
WHITE AND
BLACK
WIRES AT 5CN2
OF MAIN POWER SUPPLY
N O
Y ES
No
Note: The power supply will not power up if the +2.5V, +5VA and
-5VDIG are not loaded by the Acquisition Board.
R EPLACE MAIN POWER
SUPPLY
I S IT ~160VDC?R EPLACE PFC A SSY
N O
Y ES
P OWER S UPPLY IS NOT
SUSPECTED
, CHECK
THAT
VIDEO IS WORKING
PROPERLY

LeCroy WaveSurfer 400 Series Specifications

General

Brand	LeCroy
Model	WaveSurfer 400 Series
Category	Test Equipment
Language	English