MODULE Replacement R&S CMU
1100.4903.82 3.56 E-5
Replacing the MODULES: SPEECH CODEC, BLUETOOTH MODULE,
MC 68K, DSP MODULE, POWER PC MODULE, OPTION SPEECH
CODEC CMU-B52VAR 14 in the UNIV. SIGN. UNIT Var14/54
(see chapter 5, spare part list, Current No. 2520 (SPEECH CODEC), 2530 (BLUETOOTH MODULE),
2
540 (MC 68K), 2550 (DSP MODULE), 256X POWER PC MODULE) and explosion drawing
1100.4497.01 D sheet 2)
The sandwich modules SPEECH CODEC, BLUETOOTH MODULE, MC 68K, DSP MODULE, POWER
PC MODULE are installed in the UNIV. SIGN. UNIT as plug-in modules. For replacement proceed as
follows:
Opening the instrument and removing the modules
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.
Take out the module using the two levers on the right and left.
Caution: module could be fitted together with the next module and have to take out together with this (if
available: WCDMA L1COPRO CMU-B66/68/76/78).
Take off the covers by loosening the cover screws.
Carefully loosening the screws of the respective sandwich module (using a torque screwdriver tool)
and take out the module (see chapter 5, drawing 1100.4497.01 D sheet 2).
Installing the new sandwich module and completing the instrument
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 1100.4497.01 sheet 2).
Replace the covers and fasten with screws.
Insert the Option UNIV. SIGN. UNIT into the instrument in the reverse order.
Complete the instrument without causing damage to the cables.
Connect the instrument to the mains and switch on.
available in CMU-Service Kit CMU-Z3 (1100.7690.02)
available in CMU-Service Kit CMU-Z3 (1100.7690.02)
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