How To Remove The Front Panel; How To Install The Front Panel O; How To Replace A Front Panel Board - Tektronix 11A52 Service Manual

Maintenance
How to Remove the Front Panel
1. Unhook the return spring from the latch, and set it aside.
2. Use a Torx T-7 screwdriver to remove the four screws that fasten the front subpanel to the top and bottom
frames.
3. Pull the latch as far out of the oscilloscope as it will come, and leave it in thatposition.
4. Insert a slender, sharp-pointed tool, such as a scribe, between the front panel and the subpanel at the
notch around the latch. Gently separate the front panel from the subpanel. Use care to prevent bending
the front panel.
How to Install the Front Panel
1. Check that the four screws that fasten the front subpanel to the top and bottom frames are removed.
2. Check that the latch return spring is removed.
3. Set the l 1A52 on it side with the front panel facing you.
4. Pull the latch as far out of the amplifier as it will come, and leave it in that position.
5. Position the front panel so that the notch in the bottom fits over the latch rod, then carefully insert the
four front-panel tabs into the slots in the front subpanel.
You may need to pull the top and bottom frames away from the subpanel to allow the front-panel tabs to
fit between the casting and the frames.
6. Gently snap the edges of the front panel into place around the input connectors and the outer edges of the
panel.
7. Use a Torx T-7 screwdriver to install the four screws that fasten the front subpanel to the top and bottom
frames.
8. Install the latch return spring. Orient the spring so that its loop fits over the frame hook correctly.
How to Replace a Front-Panel Board
1. Remove the front panel as outlined in "How to Remove the Front Panel."
2. Unplug the connector that provides electrical connection to the Main board.
3. Use a Torx T-6 screwdriver to remove the two screws that fasten the Front-Panel board to the front
subpanel, and remove the Front-Panel board.
4. To replace a Front Panel board, follow the preceding steps in reverse order.
11A52 Extended Service Manual 3-11