Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!

Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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Wednesday, 6 March 2019

HARMAN KARDON AVR147/230 AV RECEIVER DISASSEMBLING PROCEDURE – AV RECEIVER REPAIR AV RECEIVER DISASSEMBLING PROCEDURE – AV RECEIVER REPAIR

HARMAN KARDON AVR147/230 AV Receiver disassembling procedure – AV receiver repair AV Receiver disassembling procedure – AV receiver repair

Category: AV Receiver Repair and Service

Contents of this article

Disassembling procedure
Dissembling diagram

HARMAN KARDON AVR147/230

DISASSEMBLY PROCEDURES
<1> TOP-CABINET(21) REMOVAL
1. Remove 13 screws(S1,S7) and then remove the Top-cabinet.
<2> FRONT PANEL ASS’Y REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Disconnect the card cable between connector(CN72-17p) on the Fip PCB(37-1)
and connector(CN72) on the Input PCB(39-1).
3. Disconnect the lead wire(BN81-8P) on the Fip PCB(37-1) from connector(CN81) on the Trans PCB(40-4).
4. Disconnect the lead wire(BN22-6P) on the Phone PCB(37-5) from connector(CN22) on the Input PCB(39-1).
5. Disconnect the lead wire(BN18-5P) on the Phone PCB(37-5) from connector(CN18) on the Input PCB(39-1).
6. Disconnect the lead wire(BN10-4P) on the Volume PCB(37-6) from connector(CN10) on the Input PCB(39-1).
7. Disconnect the lead wire(BN51-2P) on the Volume PCB(37-6) from connector(CN51) on the Input PCB(39-1).
8. Disconnect the lead wire(BN41-6P) on the Volume PCB(37-6) from connector(CN41) on the Video PCB(41).
9. Disconnect the lead wire(BN90-2P) on the Main PCB(38-1) from connector(CN86) on the Moms PCB(37-4).
10. Remove 1 screw(S10) and then lead wire(JW82-1P,JW83-1P) on the Phone PCB(37-5).
11 .Remove 1screw(S10) and then lead wire(JW84-1P) on the Volume PCB(37-3).
12. Remove 10 screws(S1) and then remove the Front Panel ASS’Y.
<3> Volume PCB(37-6) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Pull out the Volume Knob ASS’Y.
4. Disconnect connector(CN84) on the Volume PCB(37-6) from the lead wire(BN84-5P) on the Fip PCB(37-1).
5. Disconnect the lead wire(BN92-5P)on the Volume PCB(37-6) from connector(CN92) on the Phone PCB(37-5).
6. Remove 8 screws(S2,S14), and then remove the Volume PCB(37-6).
<4>PHONE PCB(37-5) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Disconnect connector(CN85)on the Phone PCB(37-5) from the lead wire(BN85-3P) on the Fip PCB(37-1).
4. Disconnect the lead wire(BN92-5P)on the Volume PCB(37-6) from connector(CN92) on the Phone PCB(37-5).
5. Remove 2 screws(S2) and then remove the Phone PCB(37-5).
<5>POWER LED PCB(37-3) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Disconnect connector(CN88) on the Power Led PCB(37-3) from the lead wire(BN88-4P) on the Fip PCB(37-1) .
4. Remove 2 screws(S2) and then remove the Power led PCB(37-3).
<6>FIP PCB(37-1) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Disconnect the lead wire(BN84-5P) on the Fip PCB(37-1) from connector(CN84) on the Volume PCB(37-6).

4. Disconnect the lead wire(BN85-3P) on the Fip PCB(37-1) from connector(CN85) on the Phone PCB(37-5).
5. Disconnect the lead wire(BN88-4P) on the Fip PCB(37-1) from connector(CN88) on the Power Led PCB(37-3).
6. Disconnect the connector (CN89) on the Fip PCB(37-1) from lead wire(BN89-4P) on the Key PCB(37-2).
7. Remove 3 screws(S2) and then remove the Guide PCB(37-8) & the Fip PCB(37-1).
<7>KEY PCB(37-2) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Remove the Fip PCB(37-1), referring to the previous step<6>.
4. Remove 10 screws(S2) and then remove the Key PCB(37-2).
<8>TUNER MODULE(44) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Disconnect the card cable between connector(CON1-13P) on the Tuner module(42)
and connector(CN13) on the Input PCB(39-1).
3. Remove 2 screws(S8) and then remove the Tuner Module(43).
<9>VIDEO PCB(41) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Disconnect the card cable between connector(BN14-13P) on the Video PCB(41)
and connector(CN14) on the Input PCB(39-1).
3. Disconnect connector(CN43) on the Video PCB(41)
from the lead wire(BN43-3P) on the Regulator PCB(A)(40-2).
4. Disconnect the card cable between connector(CN42) on the Video PCB(41).
and connector(BN44-7P) on the iPod PCB(39-2).
5. Disconnect connector(CN41) on the Video PCB(41) from the lead wire(BN41-6P) on the Volume PCB(37-6).
6. Remove 6 screws(S8) and then remove the Video PCB(41).
<10>iPod PCB(39-2) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Video PCB(41), referring to the previous step<9>
3. Disconnect the card cable between connector(BN19-15P) on the the iPod PCB(39-2)
and connector(CN19) on the Input PCB(39-1).
4. Disconnect the card cable between connector(BN44-7P) on the iPod PCB(39-2)
and connector(CN42) on the Video PCB(41).
5. Disconnect the card cable between connector(CN47-7P) on the iPod PCB(39-2)
and connector(CN47) on the RS232 PCB(37-7).
6. Disconnect the board to board connector between and connector(CN23) on the XM PCB(42)
and connector(BN17-12P) on the iPod PCB(39-2).
7. Remove 2 screws(S13) and then remove the iPod PCB(39-2).
<11>XM PCB(42) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Video PCB(41), referring to the previous step<9>.
3. Disconnect the card cable between connector(BN21-7P) on XM PCB(42)
and connector(CN21) on the input PCB(39-1).
4. Disconnect the lead wire(BN85-2P) on the XM PCB(42) from connector(CN85) on the Regulator PCB(A)(40-2).
5. Disconnect the board to board connector between and connector(CN23) on the XM PCB(42)
and connector(BN17-12P) on the iPod PCB(39-2).
6. Remove 1 screws(S15) and then remove the XM PCB(42).
<12>HDMI PCB(47) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.

2. Disconnect the card cable between connector(CN45-7P) on the HDMI PCB(47)
and connector(CN45-7P) on the Video PCB(41).
3. Remove 3 screws(S15) and then remove the hdmi PCB(47).
<13>RS232 PCB(37-7) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Video PCB(41), referring to the previous step<9>.
3. Disconnect the card cable between connector(CN47) on the RS232 PCB(37-7)
and connector(CN47-7) on the iPod PCB(39-2).
4. Remove 2 screws and then remove the RS232 PCB(37-7).
<14>INPUT PCB(39-1) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Tuner module(43), referring to the previous step<8>.
3. Remove the Video PCB(41), referring to the previous step<9>.
4. Remove the iPod PCB(39-2), referring to the previous step<10>.
5. Remove the XM PCB(42), referring to the previous step<11>.
6. Remove the HDMI PCB(47), referring to the previous step<12>.
7. Disconnect connector(CN20) on the the Input PCB(39-1)
from the lead wire(BN20-5P) on the Regulator PCB(B)(40-5).
8. Disconnect connector(CN22) on the Input PCB(39-1) from the lead wire(BN22-6P) on the Phone PCB(37-5).
9. Disconnect connector(CN18) on the Input PCB(39-1) from the lead wire(BN18-5P) on the Phone PCB(37-5).
10. Disconnect connector(CN10) on the Input PCB(39-1) from the lead wire(BN10-4P) on the Volume PCB(37-6).
11. Disconnect the card cable between connector(CN12-21p) on the Input PCB(39-1)
and connector(CN12-21p) on the main PCB(38-1)
12. Disconnect the card cable between connector(CN11-13p) on the Input PCB(39-1)
and connector(CN11) on the main PCB(38-1)
13. Disconnect the card cable between connector(CN72) on the Input PCB(39-1)
and connector(CN72-17p) on the Fip PCB(37-1)
14. Remove 11 screws(S8,S15) and then remove the Input PCB(39-1).
<15>POWER TRANS(36) & POWER PCB ASS’Y(40) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Disconnect lead wire of the Power Trans(36) from connector (CN91-3P) on the Main PCB(38-1)
3. Disconnect connector(CN19-3P,CN20-4P) on TRANS PCB(40-3)
from the lead wire(BN19-3P,BN20-4P) on the Main PCB(38-1).
4. Disconnect the lead wire(BN96-8P) on the Power PCB(40-4)
from connector(CN96) on the Regulator PCB(B)(40-5).
5. Disconnect the lead wire(BN99-8P) on the Power PCB(40-4)
from connector(CN99) on the Regulator PCB(A)(40-2).
6. Disconnect connector(CN81) on the Trans PCB(40-4) from the lead wire(BN81-8P) on the Fip PCB(37-1).
7. Remove 4 Trans screws(S9) and then remove the Power Trans(36)& Power PCB ASS’Y(40) REMOVAL .
<16>MAIN PCB ASS’Y(38-1) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Tuner module(43), referring to the previous step<8>.
3. Remove the Video PCB(41) referring to the previous step<9>.
4. Remove the iPod PCB(39-2), referring to the previous step<10>.
5. Remove the XM PCB(42), referring to the previous step<11>.
6. Remove the HDMI PCB(47), referring to the previous step<12>.
7. Remove the RS232 PCB(37-7), referring to the previous step<13>.
harman/kardon AVR147/230 Service Manual
8. Remove the Input PCB(39-1), referring to the previous step<14>.
9. Remove the AC Cord(35) on the Main PCB(38-1)
10. Disconnect the lead wire(BN90-2P) on the Main PCB(38-1) from connector(CN86) on Moms PCB(37-4).
11. Disconnect connector (CN91-3P) on the Main PCB(38-1) from lead wire of the Power Trans(36)
12. Disconnect the lead wire(BN89-2P) on the Main PCB(38-1)
from connector(CN89) on Regulator PCB(A)(40-2).
13. Disconnect the lead wire(BN19-3P,BN20-4P) on the Main PCB(38-1)
from connector(CN19-3P,CN20-4P) on TRANS PCB(40-3).
14. Remove 11screws(S13-1EA, S4-2EA, S6-2EA, S8-6EA) and then remove the Main PCB ASS’Y(38-1).

DISASSEMBLING DIAGRAM

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