Tandy 1400LT - Memory Check

@ Memory Check
YES
0-3FFFFH COOOH-FBFFFH
Check if connector
is loose (CN14)
Check GATE2
mm, m, c?xZ, rn)
Check the power supply
voltage
at RAM (t5V)
I
Check Pin4:RAS and
Pinl7:CAS
at RAM
I
Check Pin25 of IC18
(for RAM refresh) 4 baboutl5psec
DACKO signal m
[Check, IC18 1
Check Pin13 of rn
IC21,53 out1 signal+,
(for RAM refresh) 15psec
5-6