Tektronix 070-9778-03, Service Manual

Page: 90 / 119

Troubleshooting
6–38
TLA 711 Color Benchtop Controller Service Manual
To install the BIOS jumper, perform the following procedures to disassemble the
controller to access the jumper location:
1. If you have not already done so, power off the instrument and remove the
power cord.
2. Disconnect the mouse, keyboard, external monitor, and any other cables or
connectors to the controller.
3. Remove the controller from the mainframe and set it on a clean working
surface.
4. Follow the procedure beginning on page 6–10 to remove the left side cover
and rear panel.
5. Follow the procedures beginning on page 6–12 to remove the benchtop
controller subassembly.
6. Place a shorting jumper at jumper position H2, pins one and three. Refer to
Figure 6–11 for the jumper placement.
The BIOS jumper does not need to be removed after the BIOS is updated.
H2
1
3
Jumper
Figure 6–11: Controller board and adapter board interconnection
Install the BIOS Jumper