Rohde & Schwarz 890 Series - Processor; Replacement of Back>Up Battery

V L F > H F R E C E I V E R S f R & S E K 8 9 5 / R & S E K 8 9 6
User Manual f Replacement of Modules
4.3.5 Processor
Removal
1. Make preparations acc. to 4.3.1.
2. Open yellow extracting levers on processor
(see Fig. 4.12 (R&S EK 895) or Fig. 4.13 (R&S
EK!896)).
3. Pull out processor by taking hold of yellow
levers.
Installation
Installation is to be carried out in the reverse
order of removal.
4.3.5.1 Replacement of Back>up Battery
1. Remove processor acc. to 4.3.5.
2. Undo and remove ten screws fixing screw
top to components side.
3. Remove screw top.
4. Open cable binder.
5. Unsolder back>up battery (Fig. 4.5) and
remove.
Note:
Replaced lithium batteries are special
waste and should be disposed of accord>
ingly.
6. Replace old cable binder by a new one
(DZ!015.9038).
7. Remove old soldering tin from soldering
tags and apply new solder.
8. Solder in new battery (EB 565.1687).
C A U T I O N
Make sure that correct polarity is kept.
9. Secure battery by means of cable binder.
10. Perform steps 1 to 3 in the reverse order.
Fig. 4.5 Location of Back>up Battery
6164.0717.02_01
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