HP 8153A - Removing the Power Supply Board; Removing the Processor Board

Removing the Power Supply Board
Warning
High Voltage may be present on the A3 power supply board even
when the instrument is disconnected from the main power.
1. Remove the instrument housing (see "Removing the Instrument
Housing").
2. Remove the front panel assembly (see "Removing the Front Panel
Assembly") .
3. Remove the 4 screws that hold the protection shield to the board
and the board to the chassis.
4. Unscrew the safety ground cable from the outside of the chassis.
5. Pull the power supply board forward out of the mother board
connector.
6. Disconnect the fan from the power supply board.
7. Remove the power supply board.
Removing the Processor Board
1. Remove the instrument housing (see "Removing the Instrument
Housing").
2. Remove the front panel assembly (see "Removing the Front Panel
Assembly" ).
3. Turn the instrument so that it is bottom up.
4. Remove the screw holding the processor board.
5. Pull the processor board forward out of the mother board
connector.
6. Remove the processar board.
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3-2 Assembling and Disassembling the Instrument