Tektronix TBS1000 Series User Manual

Maintenance
1. Remove the rear
case. (See page 6-10, Rear Case.)
2. Check that the coaxial connections to the back side of the BNC connectors are
intact. Use th
e DMM to measure c ontinuity from the front side of the B NC
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 D C measu rement 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.
Trouble
shooting 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 p lace an entry in the error log.
Accessing the error log. The error log list can be accessed anytime by pushing the
UTILI
TY button and selecting Error Log.
The following table lists the error codes and probable causes. (See Table 6-11.)
Tabl
e 6-11: List of error codes
Err
or code
Des
cription
Pro
bable cause
0 DI Diagnostics internal error
Con
tact Tektronix
1DI
AD
G522 diagnostics failed
Ma
in board or power supply failure
2DI
PR
OM diagnostics failed
Ma
in board or power supply failure
3DI
M
EMORY diagnostics failed
M
ain board or power supply failure
4DI
C
h 1 diagnostics failed
M
ain board or power supply failure
5DI
Ch 2 diagnostics failed Main board or power supply failure
6DI
Line trigger diagnostics failed Main board or power supply failure
7DI
ADG421 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 d iagnostics failed Main board or power supply failure
255
Software Contact Tektronix
6–34 TBS1000 Series Oscilloscope Service Manual

Tektronix TBS1000 Series Specifications

General

Brand	Tektronix
Model	TBS1000 Series
Category	Test Equipment
Language	English