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Panasonic SB-WA870EB, Service Manual

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Panasonic SB-WA870EB Service Manual Download Page 12

Step 1:

Desolder the Power IC and Transistor terminals.

Steps 2 & 3:

Remove the screws.

Step 4:

Replacement of the Power IC (IC601) and Transistors

(Q601 & Q602).

Steps 5:

Desolder the Power IC and Transistor terminals.

Steps 6 & 7:

Remove the screws.

6.3. Main

Component Replacement Procedures

6.3.1. Replac

ement of the Power ICs and Transistors

12

SB-WA870EB / SB-WA870EG

Summary of Contents for SB-WA870EB

Page 1: ...uthorized copying and distribution is a violation of law SB WA870EB SB WA870EG Colour S Silver Type Notes 1 Specifications are subject to change without notice 2 Mass and dimensions are approximate SB HT870P S consists of SB PF921P S x 2 SB PS921P S x 2 and SB PC920P S x 1 n System SC HT870 E Music Center SA HT870 E Satellite Speakers SB HT870 P Active Subwoofer SB WA870 EG n System SC HT870 EB Mu...

Page 2: ...3 Main Component Replacement Procedures 12 7 Connection of the Speaker Wiring 14 8 Block Diagram 15 9 Schematic Diagram 16 10 Printed Circuit Board 21 11 Wiring Connection Diagram 26 12 Illustration of IC 痴 Transistors and Diodes 27 13 Parts Location and Replacement Parts List 28 13 1 Cabinet 29 13 2 Electrical Parts List 31 13 3 Packing Materials Accessories Parts List 34 13 4 Packaging 34 2 SB W...

Page 3: ...metal does not have a return path to the chassis the reading must be Fig 1 1 1 2 LEAKAGE CURRENT HOT CHECK See Figure 1 1 Plug the AC cord directly into the AC outlet Do not use an isolation transformer for this check 2 Connect a 1 5kΩ 10 watts resistor in parallel with a 0 15µF capacitors between each exposed metallic part on the set and a good earth ground such as a water pipe as shown in Figure...

Page 4: ...driver blade for instance as this may destroy solid state devices After repairs are completed restore power gradually using a variac to avoid overcurrent Current consumption at AC 230V 50Hz in NO SIGNAL mode should be 1000 mA EG ONLY Current consumption at AC 240V 50Hz in NO SIGNAL mode should be 1000 mA EB ONLY 4 Protection Circuitry The protection circuitry may have operated if either of the fol...

Page 5: ...speaker to the left terminal 1 Strip off the outer covering and twist the center conductor Make sure the bare ends of the wires are not unravelled If they are twist them tight again 2 Insert the wire to the rear panel of the unit and close the lever Notes To prevent damage to circuitry never short circuit positive and negative speaker wires Be sure to connect only positive Copper wires to positive...

Page 6: ...cement reverse the respective procedures Special reassembly procedures are described only when required 3 Select items from the following index when checks or replacement are required Contents Disassembly of the Speaker Unit Main Component Replacement Procedures 6 1 Disassembly flow chart The following chart is the procedure for disassembling the casing and inside parts for internal inspection whe...

Page 7: ...rom the bottom of the speaker unit Step 5 Use the Steel Ruler to slot into the hole of the bottom cabinet of speaker Step 6 Use the Wood Chip to slot between the Net Frame and the Steel Ruler as arrow shown 6 2 Disassembly of the Speaker Unit and Checking of the P C B 7 SB WA870EB SB WA870EG ...

Page 8: ...s which glued to the unit Assembly of Net Frame Clean up all the glue at the 6 Boss points and replace with the normal glue Replace the Net Frame firmly back into the cabinet Step 9 Remove the Net Frame from the cabinet of speaker Step 10 Remove all the screws from the subwoofer 8 SB WA870EB SB WA870EG ...

Page 9: ...he Power Amp unit slightly as shown Note Be careful of attach wire at CN606 Step 14 Release the connector CN606 then pull out the entire Power Amp unit Step 15 Remove all the screws Step 16 Release the connector CN507 to remove the rear panel Step 17 Remove all the screws 9 SB WA870EB SB WA870EG ...

Page 10: ...move the transformer Checking for the Transformer Amplifier and AC Inlet P C B Step 21 Place the Transformer P C B Amplifier P C B and the AC Inlet P C B as shown for checking Steps 22 Release the AC Inlet P C B as arrow shown Checking for the Power and Speaker Interface P C B 10 SB WA870EB SB WA870EG ...

Page 11: ...Step 23 Place the Power P C B and the Speaker Interface P C B as shown for checking 11 SB WA870EB SB WA870EG ...

Page 12: ... screws Step 4 Replacement of the Power IC IC601 and Transistors Q601 Q602 Steps 5 Desolder the Power IC and Transistor terminals Steps 6 7 Remove the screws 6 3 Main Component Replacement Procedures 6 3 1 Replac ement of the Power ICs and Transistors 12 SB WA870EB SB WA870EG ...

Page 13: ...Step 8 Replacement of the Power IC IC501 and Transistors Q511 Q512 13 SB WA870EB SB WA870EG ...

Page 14: ...7 Connection of the Speaker Wiring 14 SB WA870EB SB WA870EG ...

Page 15: ...C2 SUBAC1 TO MAIN BLOCK JK2000 OF SA HT870EB EG S FL1 FL2 20 21 FLIN R 6 3 FLIN R Q512 VOLTAGE REGULATOR Q601 VOLTAGE REGULATOR D601 Q602 VOLTAGE REGULATOR Q603 VOLTAGE REGULATOR D602 4 VCC LOW VCC LOW 5 D603 D604 26 25 FLIN R 1 2 FL_O R 12 IH DET 11 DISP HMUT 7 AC IN DI SENS DI SENS 13 14 1 VCC HI 18 VD 2 VCC HI 19 VD POWER HIC DUAL LOW NOISE OP AMP RSN312H24 P POWER HIC IC501 RSN311W64B P JK500 ...

Page 16: ...by mark have special characteristics important for safety Furthermore special parts which have purposes of fire retardant resistors high quality sound capacitors low noise resistors etc are used When replacing any of components be sure to use only manufacturer s specified parts shown in the parts list Caution IC LSI and VLSI are sensitive to static electricity Secondary trouble can be prevented by...

Page 17: ...04 D562 B0AACK000004 CN602 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 2 4 6 8 9 7 5 3 1 2 1 1 2 3 4 6 8 7 5 TO AMPILIFER CIRCUIT H602 W602 ON SCHEMATIC DIAGRAM 4 FAN_DRV L_in GND R_in ACIN HMUTE DCDET GND IC501 FLin IN GND FRin SUBin Cin VD VD SLin SRin RELAY Di SENS Di SENS IH DET DISP HMUT SR_O SL_O GND AC IN C_O VCC LOW VCC LOW SUB_O VCC HI VCC HI FR_O FL_O 26 25 24 23 22 21 20 19 18 17 16...

Page 18: ...69 0 047 R537 10 R538 10 DGND SYNC SYS6V HELP Q514 H505A W505 D524 SLI325URCT31 R577 1 5K R608 1 5K R609 1 5K D561 B0BA01100004 C572 50V100 R560 150 C573 1000P R561 3 9K D509 CN601 2 4 6 7 5 3 1 2 1 3 2 1 3 IC502 C0AABB000055 DUAL LOW NOISE OP AMP 1 2 3 4 5 6 7 8 B SIGNAL LINE MAIN SIGNAL LINE B SIGNAL LINE LED CIRCUIT TO AC INLET CIRCUIT CN502 ON SCHEMATIC DIAGRAM 3 SCHEMATIC DIAGRAM 2 POWER CIRC...

Page 19: ... KTC3199GRTA DCDET SWITCH D527 D530 B0EAKM000122 D525 B0BA6R600008 T501 G4C9AHG00001 T502 G4C2AAJ00005 CN503 C558 16V1000 FOR EB FOR EG 2 4 6 7 5 3 1 SCHEMATIC DIAGRAM 3 TRANSFORMER CIRCUIT B SIGNAL LINE B SIGNAL LINE TO POWER CIRCUIT CP502 ON SCHEMATIC DIAGRAM 2 AC INLET CIRCUIT R588 150 TO POWER CIRCUIT H503 W503 ON SCHEMATIC DIAGRAM 2 D528 RLY501 RSY0040M 0 3 4 1 2 14 3 12 11 10 2 4 6 8 9 7 5 1...

Page 20: ...AGE REGULATOR C603 100V4700 C604 100V3300 R611 4 7 C601 100V3300 C602 100V4700 C605 0 1 C606 0 1 C613 0 01 C614 0 01 R614 2 7K VCCHI VCCLO GND VCCLO VCCHI Q603 2SD1859QRTV2 VOLTAGE REGULATOR D606 B0BA01200008 D607 B0BA02300017 D609 D611 B0BA01900005 TO POWER CIRCUIT CN601 ON SCHEMATIC DIAGRAM 2 Q602 B1BCCG000021 VOLTAGE REGULATOR R612 4 7 R634 47K R635 47K D601 B0FBAM000009 D602 B0FBAM000009 3 10 ...

Page 21: ...08 J515 J531 J533 J538 J539 J571 J572 J573 J574 J575 J581 J591 J592 J593 J594 J595 J596 J528 C563 C562 C564 R592 R597 R573 R594 R595 R593 E500 J504 R591 C561 C566 C565 J550 C568 R599 R571 R572 Q513 Q514 J517 R596 IC502 JK501 J514 J552 J570 J409 R403 CN507 C529 R565 R523 R501 R519 C575 Q555 R581 C576 R582 D558 D559 R583 R584 Q556 R603 Q557 D560 C647 C577 Q554 D557 C57 J520 J549 J506 J543 J542 R553 ...

Page 22: ...55 R582 R584 556 R603 Q557 D560 C647 Q554 C574 D557 D556 R564 Q553 R563 R562 R602 D555 C570 R604 C579 Q552 R559 C578 D562 J559 Q512 C573 R560 R561 C572 D561 J555 R558 J520 J587 J588 R600 D563 D564 J549 J506 J530 J556 J554 J553 J543 J557 J560 J578 J542 J580 J569 J558 R601 D565 D566 J584 J586 C580 FP1 5A 5 6 R608 J566 J516 R609 R610 J509 CN601 J601 J602 J603 J605 CN602 D598 D597 D599 J609 C560 B C E...

Page 23: ...D500 R588 R500 L500 JK500 FC502 Z501 C500 RLY501 J500 J501 J502 J503 J522 J523 J525 J534 CN502 Q519 R590 J529 J540 R401 C556 W2 BLU W1 BRW T502 SUB POWER TRANSFORMER 1 2 1 2 4 3 3 1 4 2 F1 3 15A FC501 B C E B C E B C E B C E 1 2 3 4 5 6 7 3 4 5 CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE PLEASE DO NOT TOUCH THIS P C B 230 240V 50HZ EB 230V 50Hz EG AC IN 23 SB WA870EB SB WA870EG ...

Page 24: ...AC VOLTAGE LINE PLEASE DO NOT LED P C B REPX0438A EG REPX0438B EB TRANSFORMER P C B REPX0438A EG REPX0438B EB D524 R577 H505A W505 PbF CN503 J700 EB PbF J700 EG 3 2 1 SECONDARY PRIMARY W2 BLU W1 BRW T501 POWER TRANSFORMER 15 12 11 10 9 2 3 4 5 6 7 1 8 13 14 24 SB WA870EB SB WA870EG ...

Page 25: ...3 R613 R617 R618 C614 R614 D607 D606 D605 R612 J698 J686 J695 J643 J642 J630 J676 J626 J627 J617 J618 J687 R623 J665 H602 W602 R624 J688 J678 J629 C615 J675 J616 C616 R632 H603A W603 R631 R627 R628 R633 C619 J689 J644 J696 D608 R634 D611 D610 R635 J620 H605 W605 CN606 J679 D609 J621 R625 R626 R611 J628 H601 W601 H603B W603 JK601 R629 R630 C618 L601 C620 C621 L602 9 8 7 6 5 4 3 2 1 10 8765432 1 123...

Page 26: ...1 W601 CN606 1 3 H603A W603 H605 W605 SURROUND LEFT SPEAKER SURROUND RIGHT SPEAKER SPEAKER INTERFACE P C B F 1 3 4 2 4 1 H603B W603 JK601 PbF W2 BLU BRW W1 1 15 CN503 TRANSFORMER P C B 230V 240V 50HZ EB 230V 50HZ EG AC IN T502 SUB TRANSFORMER TO MAIN UNIT SOLDER SIDE BRW BLU JK500 W2 W1 CN502 POWER P C B LED P C B AC INLET P C B FAN SPEAKER WOOFER 3 2 1 25 1 24 2 CN501 2 1 1 2 3 CN506 CN507 7 1 CP...

Page 27: ...CT31 B0BA01900005 C0AABB000055 RSN311W64B P 1 26 1 4 8 5 E C B B1ACCF000063 2SD0592ARA C E B B C E A Ca Anode Cathode B0BA5R100013 B0BA01200008 B0BA5R700008 B0BA02300017 B0BA01100004 B0BA01400009 A Ca Anode Cathode A Ca Cathode Anode B0EAKM000117 Anode Cathode A Ca B0EAKM000122 Cathode A Ca Anode B0FBAM000009 2SD1859QRTV2 1 18 12 RSN312H24 P 27 SB WA870EB SB WA870EG ...

Page 28: ...e indications can be used for all areas Capacitor values are in microfarads µF unless specified otherwise P Pico farads pF F Farads Resistance values are in ohms unless specified otherwise 1K 1 000 OHM The marking RTL indicates that the Retention Time is limited for this items After the discontinuation of this assembly in production the item will continue to be available for a specific period of t...

Page 29: ...13 1 Cabinet 13 1 1 Cabinet Parts Location 29 SB WA870EB SB WA870EG ...

Page 30: ...X0039AA1A REAR PANEL M EG 5 RGRX0039AB1A REAR PANEL M EB 6 RHD30092 SCREW M 7 RMC0158 S TR FIXTURE M 8 RMGX0039 KJ TRANS RUBBER M 9 RMN0203 PCB HOLDER M 10 RMNX0135 SPACER M 11 RMQX0091 EVA PACKING WOOFER M 12 RMRX0047 2 LED HOLDER M 13 SHE187 6J PCB SUPPORT M 14 RGKX0255 S STAND ORNAMENT M 15 XTB3 16AFZ SCREW M 16 XTB3 20JFZ SCREW M 17 XTB4 12AFZ SCREW M 18 XTBS3 8JFZ1 SCREW M 19 XTS4 20JFZ SCREW...

Page 31: ... DIODE M D558 B0AACK000004 DIODE M D559 B0AACK000004 DIODE M D560 B0AACK000004 DIODE M D561 B0BA01100004 DIODE M D562 B0AACK000004 DIODE M D563 B0BA01900005 DIODE M D564 B0BA01900005 DIODE M D565 B0BA01900005 DIODE M D566 B0BA01900005 DIODE M Ref No Part No Part Name Description Remarks D597 B0FBAM000009 DIODE M D598 B0FBAM000009 DIODE M D599 B0FBAM000009 DIODE M D601 B0FBAM000009 DIODE M D602 B0F...

Page 32: ... M R561 ERDS1FVJ392T 3 9K 1 2W M Ref No Part No Part Name Description Remarks R562 ERDS2TJ472T 4 7K 1 4W M R563 ERDS1FVJ102T 1K 1 2W M R564 ERDS2TJ224T 220K 1 4W M R565 ERDS1FVJ392T 3 9K 1 2W M R566 ERG2SJ220E 22 2W M R567 ERDS1FVJ152T 1 5K 1 2W M R568 ERDS2TJ151T 150 1 4W M R569 ERDS1FVJ392T 3 9K 1 2W M R570 ERDS2TJ103T 10K 1 4W M R571 ERDS2TJ332T 3 3K 1 4W M R572 ERDS2TJ223T 22K 1 4W M R573 D0XG...

Page 33: ...C556 ECBT1H103KB5 0 01 50V M C557 ECEA1CKA220B 22 16V M C558 ECA1CM102B 1000 16V M C559 ECBT1H103KB5 0 01 50V M C560 ECA1HM100B 10 50V M C561 ECEA1HKA2R2B 2 2 50V M C562 ECQB1H103JF3 0 01 50V M C563 ECQV1H154JL3 0 15 50V M C564 ECBT1C122KR5 1200P 16V M C565 F1D1H1040002 0 1 50V M C566 F1D1H1040002 0 1 50V M C567 ECA1HM100B 10 50V M C568 ECBT1C103NS5 0 01 16V M C569 F1D1H473A012 0 047 50V M C570 EC...

Page 34: ...ription Remarks PACKING MATERIALS Ref No Part No Part Name Description Remarks P1 RPNX0248 POLYFOAM M P2 RPFX0087 MIRAMAT BAG M 13 3 Packing Materials Accessories Parts List 13 4 Packaging 34 SB WA870EB SB WA870EG FLE0403 P A S E M ...

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