Removal and Installation Procedures
TDS 420A, TDS 430A & TDS 460A Service Manual
6-53
CAUTION. The batteries used in this oscilloscope can present a fire or chemical
burn hazard if mistreated. Do not recharge, rapidly discharge, disassemble, heat
above 100_ C, or incinerate.
Replace batteries with the part number listed in the Replaceable Parts List only.
Use of another battery presents a risk of fire or explosion.
Dispose of used batteries promptly. Small quantities of used batteries may be
disposed of in normal refuse. Keep away from children. Do not disassemble, and
do not dispose of in fire.
STOP. Disconnection of the batteries from their plugs results in the loss of all
saved front panel setups and saved waveforms. Adjustment constants, stored
internally when the oscilloscope is adjusted, are not lost.
1. Assemble equipment and locate modules to be removed: Locate the back-up
battery to be removed in the locator diagram Internal Modules, Figure 6--3,
page 6--19.
2. Orient the digitizing oscilloscope: Set the digitizing oscilloscope so its top is
down on the work surface, with its right side facing you.
3. Remove back-up battery 1: Unplug the back-up battery cable at J5 of the
CPU assembly. Then pull the battery out of its clamp near the front of the
chassis to remove.
4. Remove back-up battery 2: Unplug the back-up battery cable at J5 of the
DSP assembly. Then pull the battery out of its clamp near the front of the
chassis to remove.
5. Remove the battery retaining clip: If replacement of the battery clip is
necessary, remove the T15 TorxR screw mounting the clip to the chassis.
Back-Up Batteries
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