Maintenance
6–18
WFM 601A, WFM 601E, & WFM 601M Service Manual
To remove the A1 Power Supply, use the following procedure:
1. Be sure that the instrument is not connected to the AC power mains and that
the high-voltage indicator, DS7, on the Power Supply board is off.
WARNING.
Dangerous line-potential voltage exists beneath the plastic shield over
the Power Supply board. Do not remove this shield when waveform monitor is
plugged into the AC power mains. DS7 is an indicator. If DS7 is lighted or
flashing, dangerous potentials exist beneath the plastic shield.
2. Remove the connector from A1J4 on the Power Supply board.
WARNING.
The CRT may retain a dangerous charge. Ground the conductor of the
anode to discharge the CRT. Do not allow the conductor to touch your body or
any circuitry.
3. Disconnect the CRT anode connection at its connector located between the
CRT and the Power Supply board. Discharge the anode lead to ground. See
Figure 6–16.
Figure 6–16: Removing the Power Supply board
Removing the Power
Supply Board
Summary of Contents for WFM 601A
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