MODULE Replacement CMU
1100.4903.82 3.52 E-4
MOTHERBOARD2 (small MOTHERBOARD)
Opening the instrument and removing MOTHERBOARD2
½ Switch off the instrument and pull the mains plug and unscrew the rear-panel feet.
½ Place the instrument onto the front carrying handles, push the tube upwards and take off.
½ Unscrew the combi screw of the module locking bracket near the instrument fan and swing away the
locking bracket towards the top.
½ Disconnect all the MMCX plug-in cables (using a pull-out tool
∗
) from the top of the REFERENCE
BOARD and pull off the module.
½ If installed, remove any other optional module next to the REFERENCE BOARD.
½ Disconnect the two ribbon cables from the MOTHERBOARD2. Unscrew the four screws from
MOTHERBOARD2 and take out.
Installing the new MOTHERBOARD2 and completing the instrument
½ Replace new MOTHERBOARD2, fasten with screws and connect all connectors and modules in the
reverse order.
½ Complete the instrument without causing damage to the cables.
½ Connect the instrument to the mains and switch on.
FRONTPANEL BOARD (at the front of the instrument frame)
Opening the instrument and removing the FRONTPANEL BOARD
½ Switch off the instrument and pull the mains plug and unscrew the rear-panel feet.
½ Place the instrument onto the front carrying handles, push the tube upwards and take off.
½ Remove the FRONT MODULE as described above.
½ Unscrew the four countersunk screws of part of the mounting plate in the front frame at the bottom
and the top, loosen the two ribbon cables from MOTHERBOARD1 and the MMCX coax cables
(using a pull-out tool
∗
) on the option (if installed) next to the REFERENCE BOARD.
½ Loosen all interface screws on part of the mounting plate and take out the FRONTPANELBOARD.
Installing the new FRONTPANEL BOARD and completing the instrument
½ Install new FRONTPANEL BOARD, fasten with screws and connect all connectors and modules in
the reverse order.
½ Complete the instrument without causing damage to the cables.
½ Connect the instrument to the mains and switch on.
∗
available in CMU-Service Kit CMU-Z3 (1100.7690.02)
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