Installation guide

Assembly Replacement
A11 Internal Bit Error Rate Analyzer (Option UN7)
2-28
A11 Internal Bit Error Rate Analyzer (Option UN7)
Tools Required
• needle-nose pliers
Removal Procedure
Refer to Figure 2-14 for this procedure and to the connector/cable diagram located on the card cage.
1. Disconnect the power cord.
2. Remove the outer cover. Refer to “Outer and Inner Instrument Covers” on page 2-4.
3. Using needle-nose pliers, disconnect the following cables:
• W15 cable from A10J14
(This is W77 on an Option 1EM.)
• W16 cable from A10J13
(This is W76 on an Option 1EM.)
• W17 cable from A10J12
(This is W75 on an Option 1EM.)
• W18 cable from A10J11
(This is W74 on an Option 1EM.)
• W19 cable from A10J10
• W20 cable from A10J9
• W1 cable from A10J8
(This is W73 on an Option 1EM.)
• W2 cable from A10J7
(This is W72 on an Option 1EM.)
• W12 cable from A7J800.
(This is W78 on an Option 1EM.)
4. If you have an instrument with Option 506, use needle-nose pliers and disconnect the following cables:
• W21 cable from A10J6
• W22 cable from A10J5
5. Using needle-nose pliers, disconnect the following Option UN7 cables:
• W23 from A11J4
• W24 from A11J5
• W25 from A11J6
6. Disconnect W10 from A7J13, A9J3, and A11J3.
7. Locate Top-SLOT 4, lift the retention levers, and disconnect the A11 Internal Bit Error Rate Analyzer
(Option UN7) from the A23 Motherboard.