Figure 6-29: Display/Main Module Supply Voltage Troubleshooting; Figure 6-30: No Display, Power Supply Voltages Ok - Tektronix TDS3000 Series Service Manual

Continued from Figure 6–28.
Power off oscilloscope.
Disconnect AC power cord.
Disconnect J500 cable from
the main board (Figure 6–10
on page 6–20).
Connect AC power cord.
Power on oscilloscope.
Measure voltages on
connected J900 cable as shown
in Figure 6–27 (page 6–39).
No
Are voltages within
tolerance?
Yes
Replace Display module.
Figure 6–29: Display/Main module supply voltage troubleshooting
This procedure assumes that
the oscilloscope does not
show a graticule screen after
power on cycle and that all
module power supply voltages
are correct
(Figure 6–25 through 6–29).
Return the TDS3000
oscilloscope to the nearest
Tektronix Service Center for
repair.
Figure 6–30: No display, power supply voltages OK
TDS3000 Series Service Manual
Replace Main board module
Maintenance
6–41