Marc, Jeff, Fil, Oli

Yesterday we pulled most of the AI chassis (D1000305 or D1600077) from SUS-C1 and SUS-C6, modified them for ECR E2400409 and E2500296 (IIET 35739 and 35706, respectively), and reinstalled them as part of our work converting SUSB123 and SUSH34 into SUSB13 and SUSB2H34 (88765). 

Every AI chassis in SUS-C1 and SUS-C6 was meant to be pulled, upgraded, and reinstalled EXCEPT SUS-C1 U24. Additionally, we needed to also modify a spare D1000305 AI chassis for installation into SUS-C2. We did all this, but along the way we accidentally also pulled and upgraded the AI chassis in SUS-C1 U24 (previously S1104380). Luckily, we hadn't modded the spare (S2100712) yet so we installed it into SUS-C1 U24 and installed that modified chassis in the SUS-C2 U14 spot.

Here are the steps for how we modified the AI chassis:
- Disconnected all affected AI output cables in SUS-C1 and SUS-C6
- Removed the existing 6x 2x 8CH DAC AI chassis (D1000305 or D1600077),
- Modified them to become D2500353 1x 32CH AI chassis 
    . Replaced the 2x 8CH AI rear panel with WD relays (D1000551) with 1x 32CH AI rear panel without WD relays (D2500097)
    . Replaced the 2x 8CH back panel (D1000552 with 1x 32CH back panel (D2400308)
- Relabeled AI chassis from D1000305 to D2500353, or from D1600077 to D2500397, and reinstalled
- Cabled everything up according to the corresponding version of the wiring diagram (SUSB13, SUSB2H34)

Pulled, upgraded, and reinstalled:
                                            D1000305 > D2500353     D2500097
SUS Chain               Rack / Position     Chassis S/N             Rear Board S/N     32CH DAC Card / IO Slot    Channels
ITMY M0/R0/L1           SUS-C6 / U38        S1108073                S2501317           DAC0 / Slot#2              0-15

ITMX M0/R0/L1           SUS-C6 / U37        S1108072                S2501319           DAC0 / Slot#2              16-31

ITMY L2, ITMX L2        SUS-C6 / U35        S1108074                S2501316           DAC1 / Slot#4              0-15

MC2 M1,PR2 M1,SR2 M1    SUS-C1 / U31        S1104379                S2501321           DAC2 / Slot#5              0-15

SR2 M1, MC2 M2/M3       SUS-C1 / U30        S1104368                S2501320           DAC2 / Slot#5              16-31

                                            D1600077 > D2500397
                                            Chassis S/N
ITMX ESD, ITMY ESD      SUS-C6 / U21        S1600245                S2501318           DAC1 / Slot#4              16-27

Upgraded and newly installed (technically was pulled from SUS-C1 U24 by accident):
BS M1/M2                SUS-C2 / U14        S1104380                S2501322           DAC3 / Slot#6              0-11

NOT upgraded but chassis swapped:
                                                    D1000305              D1000305
SUS Chain                        Rack / Position    Chassis S/N Before    Chassis S/N Now    
PR2 M2, PR2 M3, SR2 M2, SR2 M3   SUS-C1 / U24       S1104380              S2100712