MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
POWER PWB TROUBLESHOOTING
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| SYMPTOM | CHECK POINT | POSSIBLE CAUSE |
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| ERROR CODE 51 | Check +15VS @ connector PD pin 1 | Check Q9E00 circuit |
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| Check | Check Q9E00 circuit |
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| ERROR CODE 34 | Check 340VDC @ connector PL | Check doubler circuit |
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| Check ballast circuit |
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| ERROR CODE 48 | Check 3.3V @ connector PA2 pin 1 | IC9A24 circuit |
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| Zener D9A43 |
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| Check 18V @ L9A45/C9A82 | Q9A13 circuit |
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| Check 12VS @ connector PD pin 14 | IC9A23 circuit |
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| Zener D9A41 |
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| ERROR CODE 41 | Check 5VS @ connector PC pin 8 | IC9A21 circuit |
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| Q9A12 circuit |
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| Zener D9A47 |
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| Check 4.5V @ connector PD pin 19 | F9E10 |
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| F9E11 |
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| CHECK ALL FUSES |
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| Check 18V @ TP18VS | T9A10 circuit |
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| NO POWER | IC9A10 circuit |
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| Check 5VSL @ connector PD pin 16 | IC9A22 circuit |
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| Zener D9A39 |
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| Check connector PD pin 20 for HIGH (active) | PC9A21 circuit |
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POWER PWB OUTPUT CONNECTORS
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