   
                      IC Tester HELP - Testing section
                       Testing Diode/OCR addon device
                                      
   Here are instructions for testing Diode/OCR addon device and cable.
   . -------------------------------- .
   | Positions of electronic elements |
   ` -------------------------------- '
   
   On picture above is silkscreen layer with position of elements on
   board.
   After soldering, we need to check if everything is properly soldered.
   Now start ictester program with option -to, eq: ictester -to and
   follow instructions. Here are in details write all phases of that
   testing:
    1. Quick test - Perform quick test on IC-Tester device
          + Remove from test socket any IC, addon or other part that may
            be in it
       Now with this test program do quick check on IC Tester device to
       see if necessary parts working fine and if it's possible to do
       test on Diode/OCR addon device.
       Now you can press enter key and do test. If error occur, it will
       be one of those:
          + Test fail, not found respond from device.
            Respond from device not detected or not powered - low
            battery, follow next steps:
               o check if you are properly connected power to ictester
                 device
               o check if any power coming to ictester device
               o check if input power is 6V or up to 12V, possible low
                 battery?
               o do full test on IC-Tester device with -t option
          + ERROR: got data from test socket at ictester device and there
            shouldn't be any!
            It's possible that some element is in test socket or some IC
            at IC Tester device is damaged, follow next steps:
               o check that nothing is on test socked and run test again
               o do full test on IC-Tester device with -t option
          + Test fail, got data from test socket at device and there
            shouldn't be any!
            Here is also possible that is some element in test socket or
            there is problem with components on IC Tester device, follow
            next steps:
               o check leads on ictester board which connects IC1 socket
                 and SOC1 if they are correctly soldered
               o check if is IC1 socket correctly soldered and IC1
                 correctly connected
               o check if all wires on 25pin connector are properly
                 soldered
    2. Add-on test - Make full test on OCR/Diode add-on
          + Connect OCR/Diode add-on on test socket
          + Remove from add-on test socket any component that may be in
            it
       Here is perform full test of Diode/OCR device, press enter key to
       begin test. IF error occur, it will be one of those:
          + Test fail, got data on other pins.
            It's possible that some copper lines are soldered together,
            to solve problem follow next steps:
               o check copper lines on pins 1 and 2 and at end of R3 and
                 R2 possible contact
               o check copper lines on end of R3 and pin 3 possible
                 contact
               o check copper lines on end of R3 and pin 4 possible
                 contact
               o check copper lines on end of R3 and pins 5 and 6
                 possible contact
               o check if transistor T3 working correctly, it may burn
                 out
          + Test fail, got data on other pins.
            This is identical error as last but for other part of addon
            device, to solve problem follow next steps:
               o check copper lines on pins 2 and 3 and at end of R2 and
                 R1 possible contact
               o check copper lines on end of R2 and pins 5, 6, 10 and 11
                 possible contact
               o check copper lines on end of R2 and pins 7 and 9
                 possible contact
               o check if transistor T2 working correctly, it may burn
                 out
          + Test fail, got data on other pins.
            To solve problem follow next steps:
               o check copper lines on end of R1 and pins 13, 14, 15 and
                 16 possible contact
               o check copper lines on end of R1 and pins 11 and 12
                 possible contact
               o check if transistor T1 working correctly, it may burn
                 out
          + Test fail, transistor T3 not respond correctly.
            Problems with transistor T3, to solve problem follow next
            steps:
               o check if resistor R3 working correctly, it may be burn
                 out
               o check if transistor T3 working correctly, it may be
                 melted (short circuit)
               o check if transistor T3 working correctly, it may burn
                 out or it's misplaced
          + Test fail, transistor T2 not respond correctly.
            Problems with transistor T2, to solve problem follow next
            steps:
               o check if resistor R2 working correctly, it may be burn
                 out
               o check if transistor T2 working correctly, it may burn
                 out or it's misplaced
               o check if transistor T2 working correctly, it may be
                 melted (short circuit)
          + Test fail, transistor T1 not respond correctly.
            Problems with transistor T1, to solve problem follow next
            steps:
               o check if resistor R1 working correctly, it may be burn
                 out
               o check if transistor T1 working correctly, it may burn
                 out or it's misplaced
               o check if transistor T1 working correctly, it may be
                 melted (short circuit)
       Basically last three errors may repeat but with different
       suggestions about solving the problems. This test can more
       accurate report problems with addon device than test for IC Tester
       device, so follow suggestion and you should fix problems fast.
       After all test pass O.K. you may now use addon device for testing
       diodes or OCR elements, see Program - ictester section for more
       details.
       
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   (C) Copyright Silvio Klaic, you can write to me at sklaic@student.math.hr
