R&S CMU MODULE Replacement
1100.4903.82 3.61 E-5
Replace by new module in reverse order .
Caution!
Take care to use the torque screwdriver tool
to fit the screws with the right
torque.
Take care to insert the respective module with the correct polarity (see chapter
5, drawing 1150.0301.01 sheet 2).
Replace the covers and fasten with screws.
Insert the Option CDMA2000 SIGNALING UNIT into the instrument in the reverse order and connect
all the cables on the top.
Complete the instrument without causing damage to the cables.
Connect the instrument to the mains and switch on.
Automatic module data adjustment
During startup observe the display.
When three BEEPs can be heard, press the MENU SELECT key.
The version manager is started (see also chapter 4, Firmware update). The display includes the
menu item FIRMWARE UPDATE AFTER BOARD CHANGE.
Press the softkey to the left of the above mentioned menu item.
The automatic module data adjustment is performed under software control, firmware updates for
microprocessors and programmable devices being performed as well. This may take a few minutes.
After the adjustment has been terminated, the operating software starts automatically and the R&S CMU
is ready for use and complies with the specifications.
Replacing the Option CDMA2000 Signaling Unit CMU-B83 Var22
(see chapter 5, spare part list, Current No. 3330 and explosion drawing 1100.0008.01 D sheet 2)
The OPTION CDMA2000 SIGNALING UNIT is installed in the module support as plug-in module. For
replacement proceed as follows:
Opening the instrument and removing the OPTION CDMA2000 SIGNALING UNIT
Switch off the instrument, pull the mains plug and unscrew the rear-panel feet.
Place the instrument onto the front carrying handles, push the tube upwards and take off.
After unscrewing the two countersunk screws at the top left instrument frame slightly lift the cover at
the top of the instrument, slightly shift towards the right and lift off.
Pull off all cables (if fitted) from the top of the OPTION CDMA2000 SIGNALING UNIT.
Take out the module using the two levers on the right and left.
available in CMU-Service Kit CMU-Z3 (1100.7690.02)
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