5-1
IM DLM4038-03EN
1
2
3
4
5
6
App
Index
Troubleshooting, Maintenance, and Inspection
5.1 If a Problem Occurs
Faults and Corrective Actions
•
If a message appears on the screen, see section 20.1 in the user’s manual, IM DLM4038-02EN.
• If servicing is necessary, or if the instrument does not operate properly even after you have
attempted to deal with the problem according to the instructions in this section, contact your nearest
YOKOGAWA dealer.
Problems and Solutions
Refer To
Section
The DLM4000 does not turn on.
Securely connect the power cord to the DLM4000 and to the power outlet.
2.3
Make sure that the power switch is on.
2.3
Set the supply voltage and frequency to within the permitted range.
2.3
Nothing is displayed.
Press any key to turn on the backlight.
4.4
1
Press the DEFAULT SETUP key to initialize the screen’s display colors.
3.6
The display is odd.
Confirm that the ambient temperature and humidity are within their specified ranges.
2.2
Confirm that the display is not being affected by noise.
2.1
Make sure that the probes are properly connected.
2.4
Restart the DLM4000.
2.3
Keys do not work.
When the DLM4000 is being controlled remotely through communication commands, press
SHIFT + CLEAR TRACE to switch it to local mode.
—
2
Perform a key test. If the test fails, servicing is required.
20.2
1
Triggering does not work.
Check the trigger conditions.
Chapter 2
1
Confirm that the trigger source is being applied.
2.4, 2.6, 4.1
The measured values are not correct.
Confirm that the ambient temperature and humidity are within their specified ranges.
2.2
Allow the DLM4000 to warm up for at least 30 minutes after turning on the power switch.
2.3
Calibrate the DLM4000.
3.7
Correct the probe phase.
2.5
Set the correct probe attenuation ratio.
1.1
1
Set the offset voltage to 0 V.
1.1
1
The built-in printer isn’t printing.
The printer head may be damaged or worn out. Servicing is required.
—
It takes time to save to or load from the internal memory.
The data area may be fragmented, or registered data from deleted files may have remained
in the memory. Format the internal memory. When the internal memory is formatted, all of its
data is lost. Back up the data as necessary.
20.5
1
Unable to save data to the specified storage medium.
Check the free space on the storage medium. Remove files or use a different storage medium
as necessary.
—
The USB devices or the DLM4000 do not operate properly
If you turn on the DLM4000 when there are USB devices connected to the USB ports for
peripherals, turn off the DLM4000, disconnect the USB devices, turn the DLM4000 back on,
and then reconnect the USB devices. After turning off the power, wait at least 10 seconds
before you turn it back on.
3.3
Unable to configure or control the instrument through the communication interface.
Check to make sure that the address setting.
—
2
Match the address used in the program to the DLM4000 address.
Confirm that the interface meets the electrical and mechanical specifications.
1 See the user’s manual, IM DLM4038-02EN.
2 See the Communication Interface User’s Manual, IM DLM4038-17EN.
Chapter 5 Troubleshooting, Maintenance, and Inspection
