39

7-OCT-67 2225

Placed disk on line. Started
running diagnostic. 2330. disk got
"sector address error" while no operation was
being performed on it. Chiller was OK.
Pushed Clear button on disk. Error light
went away. Trouble with parity error
in IOP. DWP diagnosed trouple with
parity logic. Adjusted relavent B360.
No further errors. Put disk in self-
test about 0200 8-OCT-67

John Sauter

[13?]00 8 Oct 67

Was called at 1000 - machine
didn't work.

Arrived at 1130. Got random
errors from memory diagnostics
TS MAIN correctly reported that FSC doesn't
work the way it used to.

Finally got checkerboard to run
in one 0 with de -[?] memories
failed randomly. Failures correlated
well with wiggling MB cable #1 from party
box to core 0.

Found connector for MB cable # 1 in core 0
broken and marginal. Pulled 1664's in Core 0