6
Disassembly and Repair
External Timebase Circuit Board Disassembly
The External Timebase is an option to the basic instrument (Option 001).
Remove the hex nuts and washers holding the rear panel 10 MHz In and
10 MHz Out BNC connectors. Pull the External Timebase PC board (A3 assembly)
from the back panel as shown below. Then unplug the captive ribbon cable from
the keyed connector on the main PC board (J601 on the A1 assembly). Remove
the A3 assembly from the chassis.
134
A3
Keysight 33210A Service Guide