TM 11-6625-3145-14
Maintenance: Troubleshooting-318/338 Service
To keep the Event/Delay counter enabled during the test, the SQRAM must supply CE to the Event/Delay counter. So, the
same setups mentioned above are repeated in order to load 0000
binary
into the SQRAM.
After that, the MPU unmasks the interrput of the Event/Delay counter carry by writing at I/O address 40
hex
.
Then the MPU generates STEP CLK by writing FF
hex
for the SQRAM address until it receives an interrupt signal. Once the
interrupt occurs, the MPU reads the status from I/O address 5D
hex
. The signal path for reading the status is same as in
the Clock Test.
The MPU checks to see whether the Event/Delay counter Carry flag is set, and also checks the number of STEP CLKs
generated.
If the flag is set and the clock count is correct, the MPU proceeds to the next step, otherwise it is- sues an error message
and stops the test.
The DELAY count can be tested in the same way as the Event count, N. In this case, 1010
binary
is set in latches U106 and
U108 (10176) on the A03 board.
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Summary of Contents for 318
Page 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
Page 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Page 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Page 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Page 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Page 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Page 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
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Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
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Page 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Page 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Page 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Page 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Page 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
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Page 555: ...PIN 058584 ...