AVR 247 - Harman Kardon Audio Service Manual (repair manual). Page 7

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DISASSEMBLY PROCEDURES (AVR247) 
 
<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(BN41-6P) on the Volume PCB(37-6) from connector(CN41) on the Video PCB(41). 
8. Disconnect    the lead wire(BN90-2P) on the Main PCB(38-1) from connector(CN86) on the Moms PCB(37-4). 
9. Remove 1 screw(S10) and then lead wire(JW82-1P,JW83-1P) on the Phone PCB(37-5). 
10 .Remove 1screw(S10) and then lead wire(JW84-1P) on the Volume PCB(37-3). 
11. 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(CN92) on the Phone PCB(37-5) from the lead wire(BN92-5P) on the Volume PCB(37-6). 
4.. Disconnect    connector(CN85)on the Phone PCB(37-5) from the lead wire(BN85-3P) on the Fip PCB(37-1). 
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). 
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AVR247/230 Service Manual
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