Install guide
ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 4-6.3. Solid State Memory Loading Using Tape Reader Part No. 877408-2- Continued
Malfunction
Test
procedure
Normal indication
indication/corrective action
lg.
lh.
li.
lj.
Type TN character set
Each character typed is printed
Press LTRS key
Press TN CAR RET key to ter-
TTY prints out:
minate test
CPU OP-CODE TEST PASS
MEMORY TEST PASS
CPU TEST PASS
NOTE
Memory clear routing will begin auto-
matically. When completed, TTY will
print out: LOAD NEXT TAPE
SECTION
Press EXECUTE switch–
EXECUTE switch–indicator goes off
indicator to off to halt computer
2a. Press
MEMORY
LOAD
switch-indicator to on to load
main diagnostic program
NOTE
Press MEMORY LOAD switch–
indicator off and back on if a stop
code is reached prior to tape data
being read.
2b. Press
MEMORY
LOAD
switch-indicator to off
MEMORY LOAD switch-indicator
lights. Tapereaderreads tape and stops
after first reel has been read
NOTE
Ignore
PARITY ERROR switch–
indicator light unless tape stops.
MEMORY LOAD switch–indicator
goes off
Control no. 1 circuit card assembly A3
16-bit data circuit card assembly A2
2. No or incorrect printout, replace
cards in sequence given
16-bit data circuit card assembly A2
Control no. 2 circuit card assembly A4
Control no. 3 circuit card assembly A5
Control no. 1 circuit card assembly A3
Memory unit Al
Same as step 1f
No printout within 2 seconds or TTY
pMts out
CPU OP-CODE TEST FAIL
Replace cards in sequence given
Control no. 3 circuit card assembly A5
I/O discrete
circuit
card assembly A9
Control no. 2 circuit card assembly A4
Control no. 1 circuit card assembly A3
16-bit data circuit card assembly A2
TTY prints out:
MEMORY TEST FAIL
Replace cards in sequence given:
Memory unit Al
K-bit data circuit card assembly A2
Control no. 2 circuit card assembly A4
Control no. 3 circuit card assembly A5
Control no. 1 circuit card assembly A3
EXECUTE
switch-indicator remains
on:
Same card replacement as step li
Tape stops before
end of tape. Replace
tape or remn clear memory routine
and attempt to load again
Change 6
4-54.15