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Table of Contents
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Summary of Contents for Avtech AVM317A
- Page 1 AV TECH CORPORATION AVM317A Maintenance Manual V0.1 2014.05.15...
- Page 2 Apparatus: Multimeter A. Check if the power of the main board is abnormal. Step1: Measure if the components of AM317AM, PQ1 S-pin and D-Pin, is 5V. State: Yes, go to step 2. No, change the component PQ1. Step2: Measure the both ends of the component D2 of AM317AM is 5V. State: Yes, go to step 3.
- Page 3 Step3: Measure the component U12 Pin1 of AM317BM if the voltage is 5V. State: Yes, go to step4. No, change the component U12. Please send it back to RMA if the voltage isn’t 5V after changing. Step4: Measure the component U11 Pin7 of AM317AM if the voltage is 3.8V. State: Yes, go to step5.
- Page 4 Step5: Measure the both ends of the component L2 of AM317AM if the voltage is 3.8V. State: Yes, go to step6. No, change the component L2. Please send it back to RMA if the voltage isn’t 3.8V after changing. Step6: Measure the component U20 Pin1 of AM317AM if the voltage is 1.8V. State: Yes, go to step7.
- Page 5 Step7: Measure the component IC1 Pin2 of AM317BM if the voltage is 3.3V. State: Yes, go to step8. No, change the component IC1. Please sent it back to RMA if the voltage isn’t 3.3V after changing. Step8: Measure the component U13 Pin3 of AM317BM if the voltage is 1V. State: Yes, go to step9.
- Page 6 B. Video Loss Step1: Measure the component U2 Pin5 of AM317BS if the voltage is 1.2. State: Yes, go to step2. No, change the component U2. Please sent it back to RMA if the voltage isn’t 1.2V after changing. Step2: Measure the component U3 Pin5 of AM317BS if the voltage is 2.7V. State: Yes, go to step3.
- Page 7 Part Number of the Components: Main board Location Part Number Part Name PQAM2321PSO2 PAM2321P-T1-PF(SOT23) PDSCD34HSC-0 PSCD34H(SMA) PUAT120CD-110 PAT120CD-2.9KDR(SOT23) PUAT1526P1220 PAT1526P11U(SOP8) PL2U2/3020-0S PCHOKE 2.2uH SMD(3020)<O173> PUS1131B18150 PS-1131B18UA-N4DTFG(SOT-89) PUTJ3940S-5A0 PTJ3940S-3.3V(SOT223) PUG5725ADJ120 PG5725ADJT11U(SOT23-5) Sensor board Location Part Number Part Name PUAT5231120C0 PAT5231-1.2KE(SOT25) 1.2V PUAT5231270C0 PAT5231-2.7KER(SOT25) 2.7V PUS1131B18150 PS-1131B18UA-N4DTFG(SOT-89)
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