ARMY TM 5-6675-308-34
MARINE CORPS- TM 08837A-34/2
Table 4-10. Computer Automatic Test Mode Malfunction Teletypewriter Massages Continued
Corrective action
Teletypewriter malfunction message
Data buffer circuit card assembly A6
I/O controller card assembly A7
Data buffer circuit card assembly A6
SERIAL DATA I/O TEST FAIL
I/O controller card assembly A7
A/D converter circuit card assembly A11
ANALOG DATA I/O TEST FAIL
I/O controller card assembly A7
Data buffer circuit card assembly A6
Control no. 3 circuit card assembly A5
(4) + 28V power source,
b. Procedure. Shown in figure 4-4 is a schematic
a. Test Equipment and Materials.
diagram of the CDU chassis. A test setup interconnec-
(1) PADS test set consisting of the signal proces-
tion diagram is shown in figure 4-5. Testing and trou-
tor unit (SPU), punched tape reader (tape reader), buffer
bleshooting procedures are provided in table 4-11.
unit, interconnecting cables, and auxiliary equipment.
(2) Teletypewriter. The 100-wpm motor-worm
to the wiring harness connectors for troubleshooting
gear must be installed prior to use. Refer to TM 11-
malfunctioning keys. Table 4-12 contains a sample TTY
5815-200-12.
printout for the CDU test, Refer to table 4-13 for CDU
automatic test mode malfunctions.
(3) PADS power supply, computer, pallet frame,
and battery box.
4-67
Previous Page
