![Tektronix 318 Technical Manual Download Page 126](http://html1.mh-extra.com/html/tektronix/318/318_technical-manual_1077905126.webp)
TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
INDEX OF FUNCTIONAL CHECKS
Check 1. Power-up Diagnostics
Check 2. Keyboard
Check 3. CRT
Check 4. Threshold Voltage
Check 5. Parallel Data Acquisition with TEST OUTPUT
Check 6. Glitch Data Acquisition with TEST OUTPUT
Check 7. Serial State Analyzer (318S1)
MAINFRAME AND PARALLEL ANALYZER
CHECK 1. POWER-UP DIAGNOSTICS
1.
Turn on the 318.
2.
Approximately seven seconds after power is turned on, the screen display is initialized. Check to ensure that FAIL
is not displayed in any of the test fields. Refer to Figure 5-3.
This key blinks when hit.
Figure 5-3. 318 Successful Power-up
Figure 5-4. 318 Keyboard test display
diagnostics display.
CHECK 2. KEYBOARD
1.
Keyboard operation can be checked with the diagnostic program O.KBD. To start this program, turn on the power
while pressing any numeric key until an error message appears on the CRT.
2.
When an error message appears, press the START key. The Diagnostics menu will be displayed on the screen.
Press 0 to run the KBD test. Refer to Figure 5-4.
3.
Press each key individually and observe the CRT display to make sure the corresponding rectangle blinks. Press the
STOP key last. The keyboard generates an interrupt and corresponding key code for the MPU when any key except
the STOP key is pressed. The MPU reads the key code upon receiving the interrupt from the keyboard and blinks the
corresponding rectangle in the key array displayed on the screen. This test provides a check to ensure that each key
(except for the STOP key) is sending the correct key code to the MPU. The STOP key is used to exit this program;
thus the STOP key’s function can be checked at the end of this test.
5-7
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 ...
Page 526: ...TM 11 6625 3145 14 ...
Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
Page 532: ...TM 11 6625 3145 14 ...
Page 536: ...TM 11 6625 3145 14 ...
Page 538: ...TM 11 6625 3145 14 ...
Page 539: ...TM 11 6625 3145 14 ...
Page 540: ...TM 11 6625 3145 14 ...
Page 541: ...TM 11 6625 3145 14 ...
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 ...
Page 554: ......
Page 555: ...PIN 058584 ...