Maintenance
4- 14
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
¯
Reconnect loose cables.
¯
Return to top of Figure 4--3.
No
Yes
Are there
+12 volts on the
connector
pins ?
¯
Measure for +12 V DC
(
±
0.3 V) on the connector pins.
(See figure at right)
WARNING!
Be careful when measuring near
the AC power supply; there are
line voltages present on exposed
parts.
AC Power Supply module
OK. Return the MSO4000
oscilloscope to the nearest
Tektronix Service Center for
repair.
Continued from
Figure 4--3.
Connect AC power cord.
¯
Power off oscilloscope.
¯
Disconnect AC power cord.
¯
Remove instrument case.
¯
Check that all cables are
connected and fully seated into
board connectors.
No
Yes
Are all cables
connected?
Replace the AC Power
Supply module.
Figure 4- 4: AC power supply troubleshooting procedure
Summary of Contents for 4000 Series
Page 8: ...Service Safety Summary vi Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual ...
Page 13: ...Operating Information ...
Page 14: ......
Page 16: ...Operating Information 1 2 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual ...
Page 17: ...Theory of Operation ...
Page 18: ......
Page 22: ...Theory of Operation 2 4 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual ...
Page 23: ...Adjustment Procedures ...
Page 24: ......
Page 37: ...Maintenance ...
Page 38: ......
Page 55: ...Mechanical Parts List ...
Page 56: ......