TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
LIMITS AND TOLERANCES
All limits and tolerances given in this procedure are adjustment guides. They should not be interpreted as
instrument specifications unless they are also found in the Specifications part of this manual.
Tolerances given are for the instrument under test and do not include test equipment error.
EQUIPMENT REQUIRED
The equipment, or equivalent, listed at the beginning of this Adjustment and Verification Procedures section in
Table 5-1, is necessary to complete all the adjustment procedures. A partial list of equipment needed for each
individual check and adjustment is also shown at the beginning of each procedure. The specifications given in
Table 5-2 are the minimum necessary to produce accurate results. Therefore, related equipment must meet or
exceed the listed specifications. Detailed instructions for operating the test equipment are not offered in this
manual. Refer to the manual for the specific piece of test equipment you are using if more information is required.
EQUIPMENT ALTERNATIVES
When equipment other than recommended test equipment is substituted, control settings or adjustment setups
may need to be altered. If the exact equipment listed in Table 5-1 is not available, check the Minimum
Specification column in Table 5-2 carefully to see if any other equipment will suffice.
ADJUSTMENT INTERVAL
To ensure correct instrument operation, adjustment should be checked every 1000 hours of operation or every six
months, if used infrequently. Before performing the adjustment procedures, perform preventive maintenance as
outlined in the Maintenance section.
TEST SEQUENCE
NOTE
These adjustment procedures assume prior knowledge of some aspects of
338 disassembly. If further information is required, refer to the disassembly
procedures in Section 6 Maintenance: General Information.
It is necessary to perform the following sequence step by step, because all timings are level-sensitive.
INDEX OF ADJUSTMENT STEPS
Mainframe
1. Power Supplies
2. CRT Circuit
3. Threshold Voltages on the A05 ROM Board
5-78
Summary of Contents for 318
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Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
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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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