HP HP-97 - Page 74

HP-97
Component-Level Maintenance
IC Replacement, Calculator Halted or Looping
Table 4-5.
BETWEEN STEPS IC REPLACEMENT*
11 = 16A 6,3,0
16A — 16B 1,3,0
16B — 16C 2,1,3,0
16C — 16D 5,3,0
*Replace the indicated IC’s (designated by ROM number) one at a
time, returning to step 1 of functional test after each replacement.
Continue repeating the functional test, replacing IC’s until proper
display is obtained.