Rohde & Schwarz M3SR Series 4100, Service Manual, Page: 102 / 138

R&S M3SR Series 4100 HF Transceivers Disassembly
6124.9007.82.01 5.2
C A U T I O N
Among other components the R&S M3SR Series 4100 HF 150 W HF Transceiver
contains MOS, MOSFET and CMOS components. These devices are extremely
sensitive to high extraneous voltages (static discharge).
Static discharge may produce very high voltage spikes which are capable of destroy-
ing these devices.
Therefore a special CMOS workstation should be used when disassembling the R&S M3SR
Series 4100 150 W HF Transceiver and removing and installing modules.
If no special work station is available, the following minimum requirements must be met:
¾ Conductive bench and floor covering.
¾ Chair or stool with conductive covering.
¾ Earthed, metallic work top and conductive wrist-straps with a resistance of 200 k
Ω
< R < 1 M
Ω
as well as an insulated lead and plug.
¾ All conductive covering, wrist-straps and work tops must be interconnected by insulated lines.
5.1.2 Disassembling the R&S M3SR Series 4100 150 W HF Transceiver
To open the R&S M3SR Series 4100 150 W HF Transceiver proceed as follows (see also Fig. 5.1):
1. Put down R&S M3SR Series 4100 150 W HF Transceiver on a solid work top so that the top is
accessible.
2. By using a screw driver, undo the six screws at the top and take off the cover towards the rear
and then to the top.
3. Put R&S M3SR Series 4100 150 W HF Transceiver upside down on the solid work top.
4. By using a screw driver, undo the six screws at the bottom cover and take off the bottom cover
towards the rear and then to the top.