E8257D/67D, E8663D PSG Signal Generators Service Guide 299
Assembly Replacement
A18BT1
A18BT1
Tools Required
— T–10 driver (E8267D only)
— flat–head screw driver
Removal Procedure
Refer to Figure 3-24 for this procedure.
1. Disconnect the power cord.
2. Remove the covers from the signal generator. Refer to “Outer Instrument
Cover” on page 258 and “Inner Instrument Cover” on page 260.
3. Position the signal generator with the front panel facing you.
4. Using the T–10 driver, remove the four screws from the Baseband
Generator cover.
5. Disconnect the following ribbon cables:
— W19 from A18J2
— W66 from A18P2 (E8267D only)
— W18 from A18J1
— W64 from A14J13 (E8267D only)
— W90 from A14J21 (E8267D only)
6. Lift the retention levers and disconnect the A18 CPU from the A31
Motherboard.
7. Lift the A18 CPU out of the slot.
8. Using the flat–head screw driver, remove the A18BT1 by leveraging the
battery out of the battery’s socket.
Replacement Procedure
1. To install the battery, the positive side is aligned with the positive sign on
the A18’s battery clip.
2. Reverse the remaining steps of the removal procedure.
3. Perform the post–repair adjustments and performance tests that pertain
to this removal procedure.
This battery contains lithium. Do not incinerate or puncture this battery. Do not
install this battery backwards. To dispose of the battery in a safe manner, refer to
“Lithium Battery Disposal” on page 421.
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