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R&S ZVB
Instrument Construction and Function Description
1145.1078.82 3.25
E-4
Replacing the Lithium Battery on the Front Module Controller
(See Chapter 5, Spare Parts List, Item (582), and drawings 1145.1010, 1145.1290
)
The lithium battery is located on the front module controller behind the front unit.
Caution
Do not expose lithium batteries to high temperatures or naked flames.
Keep batteries away from children.
If the battery is not replaced correctly, there is a risk of explosion. Only use
R&S-type replacement batteries (See Chapter 5, Spare Parts List, Item 776
for type FMR6).
Lithium batteries are classified as special waste – only use designated containers
for disposal.
Opening the instrument and removing the front unit
Turn off the instrument and disconnect from the mains supply.
Remove the 4 screws in the front handles (410), right and left, and take off the front handles
Remove 3.5 mm connection cables (only with option R&S ZVBx-B16)
Remove the countersunk screw (390) next to the display and pull off the front cover (300 to 330)
forwards.
Remove the 2 countersunk screws (610)in the top of the front frame and the 2 in the bottom.
Remove the countersunk screws (176) (4 ), (177) (6 ), (178) (8).
Pull out forwards the front unit together with the keyboard and display (600, 601, 602, 603).
Caution
The cables to the front module controller are still connected.
Disconnect the cables to the LCD, the DC/AC illumination converter, the key pad (keyboard), the
tachogenerator and, if necessary, the network connection on the front module controller.
Note:
When disconnecting cables, be especially careful with the cable to the keyboard. It is a
foil cable and can only be removed when the locking device on the foil-cable connector
is released.
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