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TM 11-6625-3145-14
Maintenance: Troubleshooting-318/338 Service
9.
ACQ RAM TEST
Program : ACQ
Function:
Power on - All the ACQ RAMs are checked with the checkerboard marching pattern from 00 through FF.
Step 1. The word 55 is written into all RAM addresses.
Step 2. A word is read from a diagnostic cell and compared with the expected word 55. If the diagnostic cell’s value is not
equal to 55, an error message is displayed and the MPU is halted.
Step 3. If no error is found in the above test, the word AA is written into that cell. Then a word in same cell is read back
and is compared with AA. If that word is not equal to AA, an error message is displayed and the MPU is halted.
Step 4. Steps 2 and 3 are repeated for all RAM addresses.
Troubleshooting - This test is the same as that performed automatically when the power is turned on, but here the
looping feature is available. The looping feature has four options; OFF, I/O, ERROR, and TEST. When the LOOP field is
set to I/O, the looping feature allows only I/O instructions to be run repeatedly. The I/O address will appear on the screen.
When the field is set to ERROR, the looping feature allows the tests in which an error is detected to be run repeatedly.
When the field is set to
TEST, the looping feature allows one test, or sequence of tests, to be run continuously. When the field is set to OFF, the
looping feature is not available and one test, or sequence of tests, will run once.
When the I/O looping function is selected, only those OUT instructions (subroutines) including one of the addresses listed
in Table 7-20 will run. Unless the STOP key is pressed, the selected portions of the test will loop continuously without
displaying the result of the verification. In this case, use an oscilloscope to observe the acquisition circuit board.
7-110
Содержание 318
Страница 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Страница 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Страница 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Страница 269: ...TM 11 6625 3145 14 Maintenance Troubleshooting 318 338 Service Figure 7 7 318 Word recognizer test ...
Страница 278: ...TM 11 6625 3145 14 Maintenance Troubleshooting 31 8 338 Service Figure 7 10 318 N and DELAY counter test 7 25 ...
Страница 313: ...TM 11 6625 3145 14 Figure 7 19 Troubleshooting Tree 8 Data Acquisition ACQ A01 A02 Sheet 4 of 6 7 60 ...
Страница 344: ...338 TROUBLESHOOTING TREES ...
Страница 362: ...TM 11 6625 3145 14 Maintenance Troubleshooting 318 338 Service 4434 567 Figure 7 39 338 Word recognizer test 7 109 ...
Страница 371: ...TM 11 6625 3145 14 Maintenance Troubleshooting 318 338 Service 4434490 Figure 7 42 338 N and DELAY counter test 7 118 ...
Страница 421: ...TM 11 6625 3145 14 Maintenance Troubleshooting 318 338 Service Figure 7 55 Troubleshooting Tree 12 T H A01 A02 7 169 ...
Страница 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Страница 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Страница 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Страница 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Страница 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Страница 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
Страница 526: ...TM 11 6625 3145 14 ...
Страница 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
Страница 532: ...TM 11 6625 3145 14 ...
Страница 536: ...TM 11 6625 3145 14 ...
Страница 538: ...TM 11 6625 3145 14 ...
Страница 539: ...TM 11 6625 3145 14 ...
Страница 540: ...TM 11 6625 3145 14 ...
Страница 541: ...TM 11 6625 3145 14 ...
Страница 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Страница 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Страница 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Страница 548: ...TN 11 6625 3145 14 Figure 9 11 318S1 338S1 A07 Serial RS232 Non Volatile Memory Board Component Locations ...
Страница 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Страница 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
Страница 554: ......
Страница 555: ...PIN 058584 ...