154

0300 3 Jan 68

Chased disk problems since about 2100
Disk doesn't work. Gets parity errors on
write usually, but also sometimes runs
away hapelly [sic] clobbering core. WC stands
still, MA counts hapily [sic], core goes away.
It appears that the parity errors are
due to low (1.6 V) signals for read
data on the memory buss. Perhaps the
high resistance of drain wire co-ax has
gotten to us? TV camera
might work, as Disk reads OK.

SRR

11:45 3 Jan 68

630 lines 2 & 6 don't work.
Can transmit to teletype, but not from
teletype.

1430 All 630 lines but 3 now work
4706 is removed from line 3 and doesn't
work.

Lou