Install guide
ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 4-6. Computer Diagnostic/Alignment Program - Continued
Malfunction
Test procedure
Normal indication
indication/corrective action
2b.
2c.
2d.
2e.
2f.
Press EXECUTE switch-indica- EXECUTE switch-indicator lights
tor to on
TTY prints out:
PADS SOLID STATE DIAGNOS-
TIC ALIGNMENT PROGRAM
PROGRAM CHECKSUM XXXXXX
SELECT TEST MODE
This indicates solid state memory.
Select test mode per table 4-7 step
2b, 4-11 step 2d, or 4-14 step 2c.
Bypass further loading procedures
unless a new program load is required
No TTY response:
This indicates either core memory
requiring diagnostic alignment
tape loading or solid state mem-
ory unloaded. Proceed to step 2c
Press EXECUTE switch-indica- EXECUTE switch-indicator goes off
tor to off to halt computer
Install part 1 (of 2) of PADS
diagnostic alignment tape num-
ber 877418-5 on tape reader. Do
not tape program tape to takeup
reel. Manually advance tape be-
yond readable tape leader
Set tape reader SPOOLING
switch to ENABLE
Press MEMORY LOAD switch- MEMORY LOAD switch-indicator
indicator to on
lights. Tape reader reads first tape
section and stops in approximately
minute
NOTE
Press MEMORY LOAD switch-indi-
cator off and back on if a stop code
is reached prior to tape data being
loaded.
2g.
2h.
Press MEMORY LOAD switch- MEMORY LOAD switch-indicator
indicator to off
goes off
Press VERIFY switch-indicator
VERIFY switch-indicator lights.
to on to check next tape section Tape reader reads next tape sec-
against memory contents. (First tion and stops in approximately 1
two tape sections are identical)
minute
EXECUTE switch-indicator flashes.
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
If incorrect checksum, continue with
step 2c
EXECUTE switch-indicator re-
mains on:
Same card replacement as step 2b
VERIFY ERROR switch-indicator
lights and tape reader stops during
read indicating improper
memory
load or memory failure
Change 6
4-51