Maintenance
7–8
1502C MTDR Service Manual
Typically, the lithium battery for the non-volatile memory will last over seven years.
If it requires replacement, use the following procedure.
CAUTION. To avoid personal injury, observe proper procedures for handling and
disposal of lithium batteries. Improper handling might cause fire, explosion, or
severe burns. Do not recharge, crush, disassemble, heat the battery above 212° F
(100° C), incinerate, or expose the contents of the battery to water. Dispose of the
battery in accordance with local, state, and federal regulations. Typically, small
quantities (less than 20 batteries) can be safely disposed of with ordinary garbage
or in a sanitary landfill, but check local regulations before doing this.
1. Remove the Main Board as described in a previous procedure.
U1011
U1010
Unsolder here
Lithium
Cell
Unsolder here
Figure 7–5: Lithium Battery on Main Board
2. Unsolder the four leads of the lithium battery, being careful not to overheat the
cell.
3. Remove the cell from the Main Board.
4. Install a new battery and solder the leads to the Main Board.
CAUTION. Be sure that the new battery is one that is supplied or authorized by
Tektronix. An improper replacement cell could cause irreversible damage to the
Main Board circuitry.
Lithium Battery
Replacement
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