Kodak 5KVA-220V Service Manual Download Page 18 | Manualshive

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SERVICE MANUAL

5KVA-220V/230V

18

V201703A

3.3 Check the buck circuit

Power devices

BUCK MOSFET and Diode:

Q32 / D13

QB2 QD2 QA1 QC1 Q32 D13 Q30 Q29 Q27 Q28

Parts

Attribute

Reference values

Failure status

Q32

Resistor

GE: 22.7 K

GC: 259K

CE: 10-20M

Short or explosion

Diode

SD or CE: 0.406V

DS or EC: OL

D13

Resistor

+ to -: 26.2K

- to +: OL

Diode

+ to -: 0.39V

- to +: OL

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Summary of Contents for 5KVA-220V

Page 1: ...SERVICE MANUAL 5KVA 220V 230V 1 V201703A 5KVA 220V 230V Service manual ...

Page 2: ...ault information 8 2 3 Fault condition 8 2 4 Test step 9 3 Checking and measuring guide 10 3 1 Check the battery side components 10 3 2 Check the bus side components 16 3 3 Check the buck circuit 18 3 4 Check the INV full bridge 20 3 5 Check the MPPT SCC board 24 4 Disassembling guide 25 4 1 Open the case 25 4 2 Remove the control board 26 4 3 Remove the fan paper and the SCR board and the MPPT bo...

Page 3: ...de This part will teach you how to check or repair the inverter by measuring the critical components Assembling guide This part teaches you how to take the board outside and fix the new one Cables connection This part is a reference for cable connection 1 2 Basic topology introduction The topology of the inverter shows as below Utility Solar Load Battery Solar charger Charger Discharger Bi directi...

Page 4: ...ferent models These models names are only neutral names please match the real model name of your inverter to the model name in the table by comparing the typical characteristics Model name Power rating Solar charger type Solar charger number Off grid Hybrid Inverter with MPPT 5KVA 5KVA 5KW MPPT 1 Off grid 1 4 Overview the inverter Mppt board Main board PAR board CNTL board LED LCD IND ...

Page 5: ...in board Battery connection Grid connection Load connection Control board terminer ISO TX1 Power supply BUS soft start Power supply Connect BUS to MPPT board Connect PAR board Control board To PAR communication board To MPPT board To COMM board To LED To LCD CPU ...

Page 6: ...the fault information and follow How to check of part 2 3 to check the inverter then feedback the checking result to the service center It will be very helpful for solving the problem as soon as possible 2 2 Check the fault information Please follow the steps as below to find the issues Make sure that you can finish all the steps and feedback us the results Or we may not be able to give you the ri...

Page 7: ...t please have a look around are there any obviously damaged parts 2 2 1 Not working at all No display Description The inverter couldn t startup completely Possible reason 1 SPS module damaged How to check 1 Firstly please measure the resistor between BAT and BAT If it is not shorted only connect the inverter with battery and press ON button could the inverter startup If not please check the fan 2 ...

Page 8: ...ANUAL 5KVA 220V 230V 8 V201703A 2 4 Test step After replacing all defected components testing steps can be used to confirm the repair result and the reliability of the Inverter Set up the testing system as below ...

Page 9: ...ecking and measuring guide 3 1 Check the battery side components Fuse and capacitors F3 Parts Attribute Reference values Failure status F3 Resistor 0 ohm Open C9 C13 C8 C12 C12 C8 C13 C9 If the capacitors explode as below they need to be replaced ...

Page 10: ...Short or explosion Diode SD 0 43V DS OL Note1 When you use the multimeter to measure the resistor of the transistor because of the capacitor in the circuit it will cause the changing of the values when you measure the DS and GD So we recommend you measure the diode forward voltage of SD and the resistor of GS These two values can reflect the situation of the transistor more correctly Note If one o...

Page 11: ...e of the resistors list as below R41 R59 R70 R76 R80 R78 R75 R42 R52 R62 R81 R64 R93 R92 R87 R53 TVS1 TVS2 TVS3 TVS4 TVS6 TVS7 TVS8 TVS10 TVS11 TVS12 TVS14 TVS15 TVS16 Use multimeter to measure each resistor find the burnt resistors and replace them don t need to replace them all Parts Attribute Reference values Failure status All 22ohm Resistor 22 ohm Open or other values TVS1 16 Diode To 0 42V S...

Page 12: ...Q41 Q43 Q15 Q16 The Q41and Q43 are 11 300012 00G TR 2A 50V NPN TO 92 The Q15and Q16 are 11 300005 00G TR 2A 50V PNP TO 92NL Parts Attribute Reference values Failure status Q46 Q48 Q41 Q43 Resistor BE 434 2k BC 429 3k CE 19 52k Short or explosion Diode BE 0 656V BC 0 655V CE 1 3V Q47 Q49 Q15 Q16 Resistor BE 433 5k BC 432 1k CE 8 1k Short or explosion Diode BE 0 656V ...

Page 13: ... 89 The Q55and Q57 are 11 400010 00G TR 3A 50V PNP SOT 89 Q 53 Q 52 Q 51 Q 50 BCE The Q51and Q52 are 11 400011 00G TR 2A 50V NPN SOT 89 The Q50and Q53 are 11 400010 00G TR 3A 50V PNP SOT 89 Parts Attribute Reference values Failure status Q54 Q56 Q51 Q52 Resistor BE 12k BC 263 5K CE OL Short or explosion Diode BE 0 632V BC 0 631V CE OL ...

Page 14: ...C OL CE 277 3k Short or explosion Diode BE 0 632V BC OL CE 1 107V S D G Q60 Q61 The Q60 and Q61 are 11 420007 00G MOSFET 5 8A 30V SOT 23 Parts Attribute Reference values Failure status Q60 Q61 Resistor GS 4 185k GD 12 08k DS 90k Short or explosion Diode SD 0 207V DS 1 389V U9 ...

Page 15: ...5 V201703A Parts Attribute Reference values Failure status U9 Resistor Pin13TOPin12 100 300k Pin11TOPin12 438k Pin14 TO PIN12 438k Short or explosion Note If you are not sure about these components we recommend you replacing them all ...

Page 16: ... 500K Short or explosion Diode EC 0 39V CE OL Note1 When you use the multimeter to measure the resistor of the transistor because of the capacitor in the circuit it will cause the changing of the values when you measure the CE and GE So we recommend you measure the diode forward voltage of EC and the resistor of GE These two values can reflect the situation of the transistor more correctly Note If...

Page 17: ...hecking Meanwhile we also need to check the driver tubes of these power tubes Parts Attribute Reference values Failure status R91 R102 R96 R101 Resistor 47 ohm Open or other values Note2 When test the diode please remove the R90 R99 R94 R97 from the board or the test result is not right ...

Page 18: ...wer devices BUCK MOSFET and Diode Q32 D13 QB2 QD2 QA1 QC1 Q32 D13 Q30 Q29 Q27 Q28 Parts Attribute Reference values Failure status Q32 Resistor GE 22 7 K GC 259K CE 10 20M Short or explosion Diode SD or CE 0 406V DS or EC OL D13 Resistor to 26 2K to OL Diode to 0 39V to OL ...

Page 19: ...Drivers This part is only used for repair checking Parts Attribute Reference values Failure status R125 Resistor 47 ohm Open or other values Note When test the diode please remove the R124 from the board ortherwise the test result is not right ...

Page 20: ... devices INV IGBT QB2 QD2 QA1 QC1 QB2 QD2 QA1 QC1 Q32 D13 Q30 Q29 Q27 Q28 Parts Attribute Reference values Failure status QB2 QD2 QA1 QC1 Resistor GE 23 3K GC 250k CE 38M Short or explosion Diode EC 0 4V CE OL Note1 If one or more of them were damaged please replace all of them ...

Page 21: ...Reference values Failure status R144 R48 R140 R137 Resistor 47 ohm Open or other values Optocoupler U12 U2 U4 U1 U3 U12 U2 U4 U1 U3 Pin1 Parts Attribute Reference values Failure status U1 U2 U3 U4 U12 Resistor PIN8 TO PIN5 0 922M PIN7 TO PIN5 0 953M Short or explosion ...

Page 22: ... values Failure status Q1 Q2 Resistor GS 25k GD 218K DS OL Short or explosion Diode SD 0 381V DS OL D1 Resistor to 202 8k to OL Short or explosion Diode to 0 389V to OL REC1 Resistor to 303 7k to 0 7M Short or explosion Diode to 0 535V to OL Q4 Q3 Resistor GS 20K 40K GD 300K 400K DS OL Short or explosion Diode SD 0 532V DS OL ...

Page 23: ...SERVICE MANUAL 5KVA 220V 230V 23 V201703A 4 Disassembling guide 4 1 Open the case Remove screws on the top cover ...

Page 24: ...SERVICE MANUAL 5KVA 220V 230V 24 V201703A ...

Page 25: ...SERVICE MANUAL 5KVA 220V 230V 25 V201703A Open the top cover carefully for there are two cables connected with LCD display ...

Page 26: ...SERVICE MANUAL 5KVA 220V 230V 26 V201703A 4 2 Remove the control board Remove the cables on the control board Remove the fixing screws ...

Page 27: ... on the main board please make sure that the connection is correct and tighten Don t forget to put the screws and cables back 4 3 Remove the fan paper and the SCR board and the MPPT board 1 Take the plastic screws out 2 Take two nuts out 3 Take six screws out 4 you can take the SCR board and the fan paper off ...

Page 28: ...703A Remove the screws and the signal cables of the MPPT board and you can take the MPPT board paper off 4 4 Remove the main board Note Before replace the main board please follow 4 2 4 4 remove the control board MPPT board and fans first ...

Page 29: ...SERVICE MANUAL 5KVA 220V 230V 29 V201703A Remove the power cables of AC output and input Brown cable is line blue cable is neutral Do not make the wrong polarity AC input cables ...

Page 30: ...SERVICE MANUAL 5KVA 220V 230V 30 V201703A Remove the fans cables The fans cables ...

Page 31: ...SERVICE MANUAL 5KVA 220V 230V 31 V201703A Remove the screws and the signal cables on the main board And then you can take the main board out Note There are nine screws to fix the main board ...

Page 32: ... Main board 16 500893 XXG Switch LCD Display Panel board 16 500238 XXG COMM board 16 500522 XXG PAR communication board 16 500243 XXG Control board 16 500892 XXG CN5 CN3 CN8 CN2 CN6 CN3 CN5 LCD CN2 CN1 CN3 CN2 CN4 CN1 CN1 CN6 CN16 CN7 CN7 CN17 IND board 16 500895 XXG P2 P1 LED MPPT board 16 500894 XXG PV PV CN4 CN3 CN5 CN1 P2 P3 ...

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