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Control Board DL-4-S-S & DL-4-P-S Troubleshooting |
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DL-4-SS & DL-4-PS Quick Troubleshooting Guide
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| SYMPTOM |
TEST PROCEDURE |
| Runs non-stop at power up |
Check voltage at TP2 If high, replace 74C14. If low, replace Q2.
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| TD doesn’t run (dead) |
Press SW. and check voltage at TP2 If high, replace Q1 & Q2. If low, replace 74C14.
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| Ticket Meter does not work |
Replace Q3 and D3
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TD coasts to a stop
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Replace Q1 |
| Dispensing 1 1⁄2 to 2 1⁄2 tickets |
Check voltage at TP1 No Ticket: 0.1V to 0.7V Ticket: 10V to 12V If OK, replace 74C14 If NOT OK, replace H21A1 |
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