MAIN PCA TEST PROCEDURE DOCUMENT NUMBER:

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1 TEST PROCEDURE DOCUMENT NUMBER: -20 Signature Date Author J. Hoo CHK J. Hoo CHK - - Approved J. Hoo Huntron Instruments, Inc All rights reserved. This document may not be copied in whole or in part, or otherwise reproduced except as specifically permitted under U.S. copyright law, without prior written consent of HUNTRON INSTRUMENTS, INC., Mill Creek Blvd., Mill Creek, WA U.S.A (425) HUNTRON INSTRUMENTS, INC. -20 REV. B 1 OF 23

2 DATE REV RECORD AUTHOR CHK CHK APPVD A RELEASED PER ECO#1724 J.HOO J.H. J.H. B REVISED PER ECO#2567 J.HOO HUNTRON INSTRUMENTS, INC. -20 REV. B 2 OF 23

3 TABLE OF CONTENTS PAGE 1.0 EQUIPMENT NEEDED STATION SETUP TEST PROCEDURES 5 HUNTRON INSTRUMENTS, INC. -20 REV. B 3 OF 23

4 1.0 EQUIPMENT NEEDED 1. Protrack Golden Test Set 2. DMM, FLUKE 87 OR EQUIVALENT 3. Oscilloscope, Tektronix 2246 OR EQUIVALENT 2.0 STATION SETUP 1. Connect the MainPCA under test to Protrack Test Set (refer to Figure 2-1). 2. Connect DMM common lead to C171 (banana jack side) lead on Main PCA. HUNTRON INSTRUMENTS, INC. -20 REV. B 4 OF 23

5 3.0 TEST PROCEDURE Power Supply 1. Turn ON power supply. Measure using DMM the voltages on the board as listed on the following table: LOCATION VOLTAGE NAME / FUNCTION L5 (J22 side) to VDC U37 pin 2 (center) to VDC +12V supply +5A (near C176) to VDC +5V, +5 volt DC supply for mostly digital circuits +5A, +5 VDC analog supply -5A (near C176) to VDC -5A, -5 VDC analog supply C58 (- lead) C64 (+ lead) to VDC to VDC -24V, -24 VDC analog supply +24V, +24VDC analog supply U80 (pin 3) to VDC -12V, -12V LCD supply Bootup and Initialization 2. The Main PCA should have initialized and completed bootup at this point. Look at the front panel and make sure that the LCD displays the MAIN MENU. 3. Press the buttons in the following order: Menu, Prefs, LCDCon. Turn the encoder counter clockwise and verify LCD goes light with no text visible. Turn the encoder clockwise and verify LCD goes dark. Rotate encoder back to where the text is visible. 4. Press SpeakerVol and turn the encoder counter clockwise. Listen for the amplitude of the speaker to decrease to complete silence. Turn the encoder clockwise and listen for the amplitude of the speaker to increase. Press Esc to return to the previous menu (Menu 1). 5. Press Display, then Intensity. Turn the encoder counter clockwise and verify that the CRT trace gets dimmer. Turn the encoder clockwise and verify that the CRT trace gets brighter. Set the CRT intensity back to a comfortable level. 6. Press CRTHorz. Turn the encoder counter clockwise and verify that the CRT trace moves horizontally to the left. Turn the encoder clockwise and verify that the CRT trace moves horizontally to the right. HUNTRON INSTRUMENTS, INC. -20 REV. B 5 OF 23

6 Return the CRT trace to its center position. 7. Press CRTVert. Turn the encoder counter clockwise and verify that the CRT trace moves vertically down. Turn the encoder clockwise and verify that the CRT trace moves vertically up. Return the CRT trace to its center position. 8. Press TraceSep. Turn the encoder counter clockwise and verify that the CRT s dual traces moves vertically down closer then apart. Turn the encoder clockwise and verify that the CRT s dual traces moves vertically up closer then apart. Press Esc to return to the previous menu (Menu 1). 9. Press Alt then press Rate and turn the encoder counter clockwise and observe the blinking red LEDs below the Alt and A+B buttons slow down. Turn the encoder clockwise and verify the blinking red LEDs speed up. Sinewave Source Short Channel A to common at banana jacks. Verify on front panel CRT that Channel A shows a short and Channel B shows an open. Remove short on Channel A and place a short on Channel B to common at banana jacks. Verify on front panel CRT that Channel A shows an open and Channel B shows a short. Remove short from Channel B. Press Esc to return to the Main Menu. 10. Connect oscilloscope channel A probe to J16-1. Connect oscilloscope channel B probe to J16-3. Connect both probe ground leads to J16-2 (COM). Set oscilloscope vertical channels to 10V and time base to 5 ms. Verify that the LOW LED is on ( LOW range selected) on the front panel. Observe on scope, dual sine waves at approximately 10 volts peak and 60 hertz. Press MED1 button and observe on scope, dual sine waves at approximately 15 volts peak and 60 hertz. Press MED2 button and observe on scope, dual sine waves at approximately 20 volts peak and 60 hertz. Press HV20 button and observe on scope, dual sine waves at approximately 20 volts peak and 60 hertz. HUNTRON INSTRUMENTS, INC. -20 REV. B 6 OF 23

7 11. Press 20V button and rotate the encoder counter clockwise. Observe on scope, dual sine waves that decrease in amplitute. Rotate the encoder clockwise and observe on scope, dual sine waves that increase in amplitute. Note: Adjust the scope s vertical as needed to get the best display. The frequency of the sine wave should remain constant during this part of the test. 12. Press 60Hz button and rotate the encoder counter clockwise. Observe on scope, dual sine waves that decrease in frequency. Rotate the encoder clockwise and observe on scope, dual sine waves that increase in frequency. Note: The sine wave amplitudes should remain constant. 13. Press 20HV button and then the 20V button. Rotate the encoder counter clockwise and set the voltage to 2V. Press the Alt button and then the 100kohm button. Rotate the encoder counter clockwise and then clockwise while observing on scope, that dual sine waves should remain constant in amplitude and frequency. Also, watch the front panel CRT trace and verify that the trace remains relatively horizontal. Disconnect all scope connections to J16. Digital Functions 14. Press S1 RESET on the Main PCA (located near speaker). Wait for the Main Screen to appear and then press the Menu button and then press the Prefs button. Next press and hold down the button left 5 (just above the Scan button on the left side) and press button right 3 (right side second down from Menu button), then button right 4 (next one below) and then button right 3 again. Finally release the button left 5 you were holding down. If you correctly entered this button sequence, you will see the special Test menu. 15. Press the BitSet SW button. Depress and release the foot switch while watching the foot switch icon change on the LCD. 16. Connect scope channel A probe ground lead to R148 lead nearest C113 (back corner of PCA by J8, scanner interface connector). Set scope vert to 2V and time to 1mS. Press the Scanner button to activate the scanner test. TEST PROCEDURE FOR HUNTRON INSTRUMENTS, INC. -20 REV. B 7 OF 23

8 Scanner Interface Observe on the scope the following wave forms at the test points as follows: 17. Using scope probe, examine J8 pins 1,3,4,6, 7and 8 and compare wave forms with the following figure. Figure 17. Scanner Interface J8 pins 1,3,4,6,7 and 8. HUNTRON INSTRUMENTS, INC. -20 REV. B 8 OF 23

9 18. Using scope probe, examine J8 pins 2 and 5 and compare wave forms with the following figure. Figure 18. Scanner Interface J8 pins 2 and 15 HUNTRON INSTRUMENTS, INC. -20 REV. B 9 OF 23

10 19. Plug in Scanner test jumper into J8 (pins 1 and 5 are tied). Using scope probe, examine U68 pin 9 and compare wave forms with the following figures. Figure 19. Scanner Loopback Test at U68 pin 9. Remove the test jumper from J8. HUNTRON INSTRUMENTS, INC. -20 REV. B 10 OF 23

11 Parallel Interface 20. Press the Parallel button. Using the scope probe, examine J19 pins 1 and 3 and compare wave forms with the following figure. Figure 20a. Parallel Interface J19 pin 1. Figure 20b. Parallel Interface J19 pin 3. HUNTRON INSTRUMENTS, INC. -20 REV. B 11 OF 23

12 21. Using the scope probe, examine J19 pin 5 and compare wave forms with the following figure. TEST PROCEDURE FOR Figure 21. Parallel Port Interface - J19 pin 5. NOTE: check the following points also. Check U82-10; should be same level, i.e. if 0V at J19-5 then also 0V here. Check U82-11; should be opposite level, i.e. if 0V at J19-5 then 5V here. HUNTRON INSTRUMENTS, INC. -20 REV. B 12 OF 23

13 22. Using the scope probe, examine J19 pins 9 and 10 (+5V) and compare wave forms with the following figure. Figure 22. Parallel Interface - J19 pins 9 and 10 (+5V). HUNTRON INSTRUMENTS, INC. -20 REV. B 13 OF 23

14 23. Using the scope probe, examine J19 pins 12,13 and 14 (GND) and compare wave forms with the following figure. Figure 23. Parallel Interface - J19 pins 12, 13 and 14 (GND). HUNTRON INSTRUMENTS, INC. -20 REV. B 14 OF 23

15 24. Plug in test jumper between J19 pin 1 and J19 pin 17. Using scope probe, examine U71 pin 9 and compare wave forms with the following figure. Figure 24. Parallel Interface - U71 pin 9. Remove one end of the jumper from J19 pin 17. HUNTRON INSTRUMENTS, INC. -20 REV. B 15 OF 23

16 25. Plug unconnnected end of test jumper to J19 pin 19. Using scope probe, examine U59 pin 7 and compare wave forms with the following figure. Figure 25. Parallel Interface - U59 pin 7. Remove jumper between J19 pins 1 and 19. HUNTRON INSTRUMENTS, INC. -20 REV. B 16 OF 23

17 Digitizer 26. Press the Digitizer button. Using the scope probe compare J13 pins 9 (/WR), 10 (/RD) and 11 (/CS_DIG) wave forms with the following figure. Figure 26a. Digitizer Interface - J13 pins 9 and 11. Figure 26b. Digitizer Interface - J13 pin 10. HUNTRON INSTRUMENTS, INC. -20 REV. B 17 OF 23

18 27. Using the scope probe compare J13 pins 16 (D0), 18 (D2), 20 (D4) and 22 (D8) wave forms with the following figure. Figure 27. Digitizer Interface - J13 pins 16, 18, 20 and 22. HUNTRON INSTRUMENTS, INC. -20 REV. B 18 OF 23

19 28. Using the scope probe, examine J13 pin 24 (+5V) and compare wave form with the following figure. Figure 28. Digitizer Interface - J13 pin 24 (+5V) HUNTRON INSTRUMENTS, INC. -20 REV. B 19 OF 23

20 29. Using the scope probe, examine J13 pin 26 (GND) and compare wave form with the following figure. Figure 29. Digitizer Interface - J13 pin 26 (GND). HUNTRON INSTRUMENTS, INC. -20 REV. B 20 OF 23

21 30. Using the scope probe compare J13 pins 23 (D7), 21(D5), 19 (D3) and 17(D1) wave forms with the following figure. Figure 30. Digitizer Interface - J13 pins 23,21, 19 and 17. HUNTRON INSTRUMENTS, INC. -20 REV. B 21 OF 23

22 31. Plug J13 test jumper into J13. Using the scope probe compare U67 pins 2 (D0), 3 (D1), 4 (D2), 5 (D3), 6 (D4), 7(D5), 8 (D6) and 9 (D7) wave forms with the following figures. Figure 31a. Digitizer Interface - U67 pins 2,4,6 and 8. Figure 31b. Digitizer Interface - U67 pins 3,5,7and 9. HUNTRON INSTRUMENTS, INC. -20 REV. B 22 OF 23

23 32. Remove J13 jumper plug. Place jumper between J13 pin 16 and 12. Using the scope probe examine U68 pin 3 and compare results with the following figure. NOTE: BE CAREFUL NOT TO HIT PINS 4,5,OR 8 WHILE CONNECTING JUMPER AS YOU WILL CAUSE AN OVERVOLTAGE TO OCCUR. Figure 32. Digitizer Interface - U68 pins 3,4 and 5 and U59 pin 9. Keep one end of jumper on J13 pin 16 and remove other end from J13 pin 12. Place on J13 pin 14. Using the scope probe examine U68 pin 4 and compare results with the figure above. Keep one end of jumper on J13 pin 16 and remove other end from J13 pin 14. Place on J13 pin 15. Using the scope probe examine U68 pin 5 and compare results with the figure above. Keep one end of jumper on J13 pin 16 and remove other end from J13 pin 15. Place on J13 pin 13. Using the scope probe examine U59 pin 9 and compare results with the figure above. Remove jumper. 33. END OF TEST HUNTRON INSTRUMENTS, INC. -20 REV. B 23 OF 23

24 HUNTRON INSTRUMENTS, INC. -20 REV. B 24 OF 23