Maintenance
1.
Remove the rear case. (See page 58,
2.
Check that the coaxial connections to the back side of the BNC connectors are
intact. Use the DMM to measure continuity from the front side of the BNC
connector to the point where it attaches to the Main board.
NOTE.
The ground side of the BNC has three connections (two mounting lugs
and one signal wire) while the center connection has one. Incomplete or poor
connection of the ground side may cause AC signal quality problems without
affecting DC measurement capability.
3.
If no problem is found and the trouble persists, the Main board is probably
defective in some way that the internal diagnostics cannot detect. Replace it.
Troubleshooting the USB
Interface
To troubleshoot the USB interface, if the acquisition is working, and the USB is
not, replace the Main board.
Using the Error Log
Failures that occur during the power-up diagnostics or normal oscilloscope
operation place an entry in the error log.
Accessing the error log.
The error log list can be accessed anytime by pushing the
UTILITY button and selecting Error Log.
The following table lists the error codes and probable causes. (See Table 26.)
Table 26: List of error codes
Error code
Description
Probable cause
0 DI
Diagnostics internal error
Contact Tektronix
1 DI
ADG522 diagnostics failed
Main board or power supply failure
2 DI
PROM diagnostics failed
Main board or power supply failure
3 DI
MEMORY diagnostics failed
Main board or power supply failure
4 DI
Ch 1 diagnostics failed
Main board or power supply failure
5 DI
Ch 2 diagnostics failed
Main board or power supply failure
6 DI
Line trigger diagnostics failed
Main board or power supply failure
7 DI
ADG421 diagnostics failed
Main board or power supply failure
12 DI
Ch 3 diagnostics failed
Main board or power supply failure
13 DI
Ch 4 diagnostics failed
Main board or power supply failure
14 DI
ADG421 #2 diagnostics failed
Main board or power supply failure
15 DI
ADG522 #2 diagnostics failed
Main board or power supply failure
16 DI
DRAM2 diagnostics failed
Main board or power supply failure
17 DI
USB diagnostics failed
Main board or power supply failure
255
Software
Contact Tektronix
TDS2000C and TDS1000C-EDU Series Oscilloscope Service Manual
81
Summary of Contents for TDS1001C-EDU
Page 12: ...Preface x TDS2000C and TDS1000C EDU Series Oscilloscope Service Manual...
Page 30: ...Specifications 18 TDS2000C and TDS1000C EDU Series Oscilloscope Service Manual...
Page 52: ...Performance Verification 40 TDS2000C and TDS1000C EDU Series Oscilloscope Service Manual...
Page 60: ...Adjustment Procedures 48 TDS2000C and TDS1000C EDU Series Oscilloscope Service Manual...
Page 85: ...Maintenance TDS2000C and TDS1000C EDU Series Oscilloscope Service Manual 73...
Page 96: ...Maintenance 84 TDS2000C and TDS1000C EDU Series Oscilloscope Service Manual...
Page 110: ...Replaceable Parts 98 TDS2000C and TDS1000C EDU Series Oscilloscope Service Manual...
