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HARMAN KARDON HK3470
Service Manual

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Contains Circuit Diagrams
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PDF Format
Complete manual
Language: English

Price: $4.99

Description of HARMAN KARDON HK3470 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

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Text excerpt from page 150 (click to view)

HK3370/HK3470
<8> PHONES P. C. BOARD(e) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step<1>. 2. Remove the Front-panel ASS'Y(AA), referring to the previous step<2>. 3. Disconnect the lead wire(CW 801, 3P) from connector(CN 401) on the Amp P. C. Board(h). 4. Remove 2 screws(E) and then remove the Phones P. C. Board(e). <9> POWER P. C. BOARD(f) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step<1>. 2. Remove the Front-panel ASS'Y(AA), referring to the previous step<2>. 3. Disconnect the lead wire(CW 801, 5P) from connector(CN 302) on the Front P. C. Board(d). 4. Remove 2 screws(J) and then remove the Power P. C. Board(f). <10> STANDBY P. C. BOARD(g) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step<1>. 2. Remove the Front-panel ASS'Y(AA), referring to the previous step<2>. 3. Remove 2 screws(J) and then remove the Standby P. C. Board(g). <11> TUNER P. C. BOARD(j) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step<1>. 2. Remove 21 screws(G,K) and then remove the Chassis-back(41). 3. Pull out the Tuner P. C. Board(j). <12> RADIATOR ASS'Y(AB) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step<1>. 2. Disconnect the connector(CN 401) from lead wire(CW 801, 3P) on the Phones P. C. Board(e). 3. Disconnect the lead wire(CW 403, 4P) from connector(CN 111, CN 112) on the Main P. C. Board(i). 4. Disconnect the lead wire(CW 402, 10P) from connector(CN 107) on the Main P. C. Board(i). 5. Disconnect the lead wire(CW 401, 4P) from connector(CN 108) on the Main P. C. Board(i). 6. Remove 7 screws(I) and then pull out the Radiator Ass'Y(AB). <13> AMP P. C. BOARD(h) REMOVAL. 1. Remove the Chassis-top(44), referring th the previous step<1>. 2. Remove the Radiator Ass'Y(AB), referring to the Previous step<12>. 3. Disconnect the connector(CN 402) from lead wire(posistor, 2P) on the Radiator-main (21). 4. Remove 4 screws(D) and then remove the Amp P. C. Board(h). <14> POWER TRANS(38) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step<1>. 2. Disconnect the lead wire(2P) from connector(CN 103) on the Main P. C. Board(i). 3. Disconnect the lead wire(3P) from connector(CN 104) on the Main P. C. Board(i). 4. Disconnect the lead wire(6P) from connector(CN 105) on the Main P. C. Board(i). 5. Disconnect the lead wire(3P) from connector(CN 106) on the Main P. C. Board(i). 6. Remove 4 screws(B) and then remove the Power trans(38). <15> MAIN P. C. BOARD(i) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step<1>. 2. Remove the Tuner P. C. Board(j), referring to the previous step<11>. 3. Disconnect the connector(CN 109) from lead wire(CW 701, 10P) on the Volume P. C. Board(b). 4. Disconnect the connector(CN 108) from lead wire(CW 401, 4P) on the Amp P. C. Board(h). 5. Disconnect the connector(CN 115) from connector(CN 301, card cable) on the Front P. C. Board(d). 6. Disconnect the connector(CN 107) from lead wire(CW 402, 10P) on the Amp P. C. Board(h). 7. Disconnect the connector(CN 106) from lead wire(3P) on the Power-trans(38). 8. Disconnect the connector(CN 105) from lead wire(6P) on the Power-trans(38). 9. Disconnect the connector(CN 113) from lead wire(CW 301, 7P) on the Front P. C. Board(d). 10. Disconnect the connector(CN 104) from lead wire(3P) on the Power-trans(38). 11. Disconnect the connector(CN 111, CN 112) from lead wire(CW 403, 4P) on the Amp P. C. Board(h). 12. Disconnect the connector(CN 102) from lead wire(CN 801, 2P) on the Standby P. C. Board(g). 13. Disconnect the connector(CN 103) from lead wire(2P) on the Power-trans(38). 14. Disconnect the connector(CN 101) from Ac cord(40).

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