TM 11-6625-3145-14
Operating Instructions-318/338 Service
DIAGNOSTICS
The 318/338 has internal diagnostics to help verify proper instrument performance. Some of the diagnostics occur
automatically whenever the 318/338 is powered on. Other diagnostics require that probes be properly attached to test
points or require an operator at the keyboard. Any error found during correct operation of the diagnostics means that an
instrument failure has occurred, has been detected, and that service is required. If an error occurs, refer to
Maintenance
:
Troubleshooting
, of this manual for help in isolating and correcting the problem.
POWER-UP SELF TEST
When you press the POWER switch, the internal diagnostic tests run automatically. These tests check out the major
hardware components and operating firmware.
During the first phase of self test, the 318/338 tests the major blocks of system RAMs and ROMs. After RAM/ROM tests,
the 318/338 is initialized. After several seconds, the display shows a configuration listing (see 3 in Figure 3-1). At the top
of the screen (1 in Figure 3-1), the message SELF TEST VERSION X.X appears. On the next line (2 in Figure 3-1), the
message IN PROGRESS appears.
Each listed menu is tested and then given a PASS or FAIL notation. (See 4 in Figure 3-1.) If errors are detected, error
messages also appear. (See 5 in Figure 3-1.) PASS means that the test was successful; FAIL means that the test was
unsuccessful.
When all tests are finished, the message COMPLETED appears on the screen. (See 2 in Figure 3-1.) A prompt message
then appears at the bottom of the screen.
If no errors are found during self test, the screen will look like Figure 3-2.
You may now enter any menu and begin operation. If errors occurred during self test, the screen will look like Figure 3-1.
If the errors that occurred do not affect the operations you want to perform, press a MENU key. If you want to enter the
Diagnostics menu, press START.
NOTE
If neither of the displays shown in Figure 3-1 or Figure 3-2 appears on the screen
after several seconds, system errors have been detected. Refer to Section 7,
Maintenance: Troubleshooting, for help in isolating and correcting the problem.
3-5
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 ...