A1 Keyboard; Tools Required; Removal Procedure; Replacement Procedure - Keysight Technologies E8257D Service Manual

Assembly Replacement

A1 Keyboard

A1 Keyboard

Tools Required

— T–10 driver

Removal Procedure

Refer to
< US/MY5XXX3XXX for this procedure.
Refer to
≥ US/MY5XXX3XXX for this procedure.
1. Disconnect the power cord.
2. Remove the front panel. Refer to
3. For serial number prefix < US/MY5XXX3XXX, disconnect the A2DS1W1
4. Disconnect the W8 ribbon cable from the A3 Power Switch by lifting the
5. Using the T–10 driver, remove the four screws (12) from the A3 Power
6. Remove the A3 Power Switch.
7. Using the T–10 driver, remove the ten screws (11) that secure the RFI
8. Remove the metal shielding.
9. Using the T–10 driver, remove the four screws (9) that secure the A2
10.Remove the A2 Display.
11.Using the T–10 driver, remove the nine screws (8) that secure the A1
12.Remove the A1 Keyboard.

Replacement Procedure

1. Reverse the order of the removal procedures.
2. Torque all T–10 screws to 9 in–lbs.
3. Perform the post–repair adjustments and performance tests that pertain
266
Figure 3-5 for instruments with serial number prefix
Figure 3-6 for instruments with serial number prefix
cable from the A4 Inverter.
For serial number prefix ≥ US/MY5XXX3XXX, disconnect the A2W1 cable
from the A2 Display.
white tabs on the connector.
Switch.
shielding (10) to the front panel.
Display to the front panel.
Keyboard to the front panel.
to this removal procedure.
E8257D/67D, E8663D PSG Signal Generators Service Guide
"Front Panel" on page 262.