6240B DC Voltage Current Source/Monitor Operation Manual
A-1
APPENDIX
A.1 When Problems Occur (Before Requesting Repairs)
If any problem is encountered when using the 6240B, inspect the unit referring to Table A-1. If the problem
cannot be solved by the suggested remedial actions, contact an ADC CORPORATION sales representative.
Fees will be charged for repairs by ADC CORPORATION even if the problem is one of those listed in Table
A-1. Therefore, carefully inspect the 6240B before requesting service
Table A-1 Items to be Inspected before Requesting the Repair (1/2)
Q (Symptom)
A (Cause and Solution)
1. Turning on the
POWER
switch does
not display the screen.
Cause:
Solution:
The power fuse is open.
Replace it with the correct fuse.
2. Does not output the
setting source values.
Cause:
Solution:
The output status is Standby or Suspend.
Set the output status to Operate and check that the
OPR
indicator on the
front panel is ON.
Cause:
Solution:
Incorrect remote sensing setting.
Check the 4W/2W indicator on the front panel to see if the remote sens-
ing is set as desired.
Cause:
Solution:
The source value is set to 0 V or 0 A.
Verify the source value.
Cause:
Solution:
Detection of an overload voltage (Over Load) has set it to Standby.
Disconnect the connection cables.
Cause:
Solution:
Heat detection (Over Heat) or fan detection (Fan Stopped) has activated,
setting it to Standby status.
Remove the cables and turn OFF the
POWER
switch.
Turn ON the
POWER
switch again.
Cause:
Solution:
The limiter is activated.
Verify the limiter setting.
Cause: • The
OUTPUT
terminal and the
SENSE
terminal are incorrectly con-
nected.
•
SENSE
is not connected correctly in 4-wire connection.
Solution: Verify the cable connections.
Cause: The interlock signal sets the output status to Standby.
Solution: • Change the interlock setting.
• Set the Interlock signal to LO.
