a) Disconnect the AC power cord.
b)
Disconnect J3203 from the circuit board.
c) Connect the AC power cord.
d) Measure for +12 V
DC
between pin 10 (+12 V
DC
) and pin 18 (ground) on the disconnected cable.
If there is no +12 V
DC
value on pin 10, carefully check for 115 V
AC
at the connectors of the AC line filter. If there is AC at the line
filter, replace the power supply module or reassemble and return the instrument to a Tektronix Service Center for repair.
Warning: Be careful when measuring the AC line voltage to avoid injury to yourself or damage to the instrument.
3. If there is +12 V
DC
at pin 10 of the disconnected J3203 cable, do the following:
a)
Disconnect the AC power cord.
b) Reconnect J3203 to the circuit board.
c) Connect the AC power cord.
d) Insert for one (1) second and then remove a 0.1-inch-spaced shorting jumper between pins 9 and 10 of the Service connecter pins
on the edge of the circuit board (see following image). Wait five (5)seconds as the fans turn on and the power supply powers on.
e) Measure for +12 V
DC
between chassis (ground) and pins 1 through 4 and pins 1
1 through 15 on J3203.
If all these pins have +12 V
DC
present, then the power supply is working correctly. Disconnect the AC power cord, reassemble the
instrument, and return the instrument to a Tektronix Service Center for repair.
Instrument self tests
The instrument runs self test diagnostics during every power on. The power on self tests ensure that the hardware and software are
functionally working. The tests provide limited diagnostic information, and provide no performance information.
If the instrument detects errors during power on, a pop-up message indicates that a failure has occurred. To display the Self test menu and
results, select Utility > Self Test. Select a test mode and run the self tests. If you continue to get errors on one or more tests, you will need
to return the instrument to your nearest Tektronix Service Center for repair.
Software updates
To update the application software:
1. Go to www.tek.com/product-support.
2. Enter a model number (MSO54, MSO56, or MSO58 ) in the Enter Product or Product Series Name field and click Go. Any 5 Series
model number will do, as all models use the same software update.
Maintenance
5 Series MSO Service Manual MSO54, MSO56, MSO58 33
To Next Page
Loading...
Need help?
General
