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Panasonic SB-WA17E, Service Manual, Page: 9 / 36

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Panasonic SB-WA17E Service Manual Download Page 9

7.2.1. Disassembly of the Front Panel

Unit

Step 1:

Slot in a steel ruler to give a gap between the Front

Panel Unit and the Speaker Cabinet Assembly as arrow shown.

Steps 2:

Slot a piece of wood chip in between the Front Panel

Unit and the steel ruler as arrow shown.

Step 3:

Use the screwdriver to slightly lift up the Front Panel

Unit as arrow shown.

Note:

Be careful with the bosses which are glued to the Speaker
Cabinet Assembly Unit.

Step 4:

Remove the Front Panel Unit from the Speaker

Cabinet Assembly Unit as arrow shown.

7.2. Disassembly of the Speaker Unit and Checking of the P.C.B.

9

SB-WA17E / SB-WA17EB

Summary of Contents for SB-WA17E

Page 1: ...and dimensions are approximate 1 Safety Precautions 3 2005 Matsushita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law SB WA17E SB WA17EB Colour S Silver Type n System SC HT17 EG Music Center SA HT17 EG Satellite Speakers SB HT17 P Active Subwoofer SB WA17 E n System SC HT17 EP Music Center SA HT17 EP Satellite Speakers SB HT17 P Active Sub...

Page 2: ...t 15 8 2 Waveform Chart 16 9 Block Diagram 17 10 Notes of Schematic Diagram 18 11 Schematic Diagram 19 11 1 Power Circuit 19 11 2 Transformer Circuit and AC Inlet Circuit 21 11 3 Amplifier Circuit 22 12 Printed Circuit Board 23 12 1 Power P C B 23 12 2 AC Inlet P C B and Transformer P C B 25 12 3 Amplifier P C B 26 13 Wiring Connection Diagram 27 14 Illustration of ICs Transistors and Diodes 28 15...

Page 3: ...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 1 3 Use an AC ...

Page 4: ...2 Caution for AC Mains Lead 4 SB WA17E SB WA17EB ...

Page 5: ...crewdriver 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 230 V 50 Hz in NO SIGNAL mode should be 900 mA E Current consumption at AC 240 V 50 Hz in NO SIGNAL mode should be 900 mA EB 5 Protection Circuitry The protection circuitry may have operated if either of the followin...

Page 6: ...4Ω Be sure to connect the cable from the right speaker to the right terminal and the cable from the left 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 6 SB WA17E SB WA17EB ...

Page 7: ...placement are required Disassembly of the Front Panel Unit Disassembly of Woofer Speaker Unit 1 Disassembly of Woofer Speaker Unit 2 Disassembly of the Power Amp Unit Disassembly of the Rear Panel and Fan Unit Disassembly and checking of the AC Inlet P C B and Amplifier P C B Disassembly and checking of the Power P C B and Transformer P C B Replacement of Power ICs and Transistors 7 1 Disassembly ...

Page 8: ...7 1 2 Disassembly of Rear Assembly 8 SB WA17E SB WA17EB ...

Page 9: ...etween the Front Panel Unit and the steel ruler as arrow shown Step 3 Use the screwdriver to slightly lift up the Front Panel Unit as arrow shown Note Be careful with the bosses which are glued to the Speaker Cabinet Assembly Unit Step 4 Remove the Front Panel Unit from the Speaker Cabinet Assembly Unit as arrow shown 7 2 Disassembly of the Speaker Unit and Checking of the P C B 9 SB WA17E SB WA17...

Page 10: ...anel Unit firmly back to the Speaker Cabinet Assembly Unit 7 2 2 Disassembly of the Woofer Speaker 1 Follow Step 1 to Step 4 described in section 7 2 1 Step 1 Remove 4 screws Step 2 Remove the Woofer 1 by detaching the red and black wires 7 2 3 Disassembly of the Woofer Speaker 2 Follow Step 1 to Step 4 described in section 7 2 1 10 SB WA17E SB WA17EB ...

Page 11: ...2 by detaching the red and black wires 7 2 4 Disassembly of the Power Amp Unit Step 1 Lay the speaker unit as shown Remove 7 screws from the bottom of the Speaker Cabinet Assembly Unit Step 2 Remove 3 screws from the rear panel 11 SB WA17E SB WA17EB ...

Page 12: ...ull out the entire Power Amp Unit 7 2 5 Disassembly of the Rear Panel and Fan Unit Follow Step 1 to Step 5 described in section 7 2 4 Steps 1 2 Remove 7 screws from the rear panel Step 3 Disconnect the connector CN507 to detach the rear panel Step 4 Remove 4 screws from the rear panel 12 SB WA17E SB WA17EB ...

Page 13: ...nd AC Inlet P C B 7 2 7 Disassembly and Checking of the Power P C B and Transformer P C B Follow Step 1 to Step 5 described in section 7 2 4 Follow Step 1 to Step 3 described in section 7 2 5 Steps 1 2 Remove 4 screws Step 3 Flip the Power P C B as shown for checking both the Power P C B and Transformer P C B 7 2 8 Replacement of Power ICs and Transistor Follow Step 1 to Step 5 described in sectio...

Page 14: ...the terminals of IC601 Transistors Q601 and Q602 Step 4 Disconnect the connectors CN601 CN602 and CN603 and remove the Amplifier P C B Step 5 Remove 4 screws Step 6 Remove 2 screws and the transistor holders Step 7 Flip the Power P C B as shown to desolder the terminals of the Power IC501 Transistors Q511 and Q512 14 SB WA17E SB WA17EB ...

Page 15: ...4 7 64 5 0 31 9 31 9 0 0 0 0 0 0 0 2 32 2 32 2 10 4 0 0 64 7 STANDBY 0 0 14 5 0 4 0 0 1 0 0 0 0 0 0 0 0 0 3 0 0 0 0 14 5 Ref No MODE 21 22 23 24 25 26 CD PLAY 64 6 0 0 0 0 0 STANDBY 0 4 0 0 0 0 0 Ref No MODE E C B E C B 1 2 3 E C B E C B CD PLAY 0 5 3 0 0 5 3 0 0 0 0 3 0 0 8 0 0 8 0 0 8 STANDBY 0 1 1 0 0 1 1 0 0 0 0 0 0 2 0 0 2 0 0 2 Ref No MODE E C B E C B E C B E C B E C B CD PLAY 5 2 32 3 5 8 1...

Page 16: ...CN501 PIN 22 CD PLAY 7 24Vp p 10msec div CN501 PIN 24 CD PLAY 6 88Vp p 10msec div CN503 PIN 1 CD PLAY 131Vp p 10msec div CN503 PIN 3 CD PLAY 67 2Vp p 10msec div CN503 PIN 7 CD PLAY 68 0Vp p 10msec div CN503 PIN 9 CD PLAY 132Vp p 10msec div CN602 PIN 5 CD PLAY 3 36Vp p 10msec div CN501 PIN 8 CD PLAY 1 09Vp p 10msec div 16 SB WA17E SB WA17EB ...

Page 17: ...508 AC2 AC1 TO MAIN BLOCK JK2000 OF SA HT17E EB EG EP S FL1 FL2 20 21 L_IN R_IN 6 3 L_OUT R_OUT Q512 VOLTAGE REGULATOR Q601 VOLTAGE REGULATOR D601 Q602 VOLTAGE REGULATOR Q603 VOLTAGE REGULATOR D602 4 VCC LOW VCC LOW 5 D603 D604 26 25 IN_1 IN_2 1 2 OUT_1 OUT_2 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 E500 POWER IC RSN312H24A P POWER IC IC501 RSN311W64D P JK...

Page 18: ...ark 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 tak...

Page 19: ...4 CN602 IC501 IN_1 IN GND SUBin Cin VD VD SLin SRin RELAY VCC LOW VCC LOW IH DET DISP HMUT SR_R SR_L GND AC IN C_O VH OUT VH OUT SUB_O VCC HI VCC HI OUT_2 OUT_1 IN_2 Q559 Q559 B1AACF000117 DC DETECT SWITCH Q505 SUB B 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 ...

Page 20: ... R577 1 5K JK502 JK501 R571 2 2K HELP L505 G0AR76Y00001 L502 G0AR76Y00001 C535 1000P 2 4 6 7 5 3 1 2 4 6 7 5 3 1 8 SCHEMATIC DIAGRAM 2 POWER CIRCUIT TO TRANSFORMER CIRCUIT CN503 ON SCHEMATIC DIAGRAM 3 1 2 3 4 5 6 10 8 7 9 TO AMPLIFIER CIRCUIT H601 W601 ON SCHEMATIC DIAGRAM 4 1 2 3 4 5 6 TO AC INLET CIRCUIT CN502 ON SCHEMATIC DIAGRAM 3 F Rch S Lch F Lch S Rch CENTER 15 14 3 12 11 10 2 4 6 8 9 7 5 1...

Page 21: ...ACF000117 DCDET SWITCH D527 D530 B0EAKM000122 D525 B0BA6R600008 T501 G4C8AHK00004 T502 G4C2AAJ00005 CN503 C558 16V1000 W2 L500 ELF15N035AN Z501 ERZV10V511CS R401 220K SUB B FOR E SERIES FOR EB SERIES 2 4 6 7 5 3 1 1 2 3 4 5 6 14 12 10 8 7 9 11 13 15 R588 150 D528 RLY501 K6B1AEA00003 3 4 1 2 D527 D530 D529 SCHEMATIC DIAGRAM 3 TRANSFORMER CIRCUIT B SIGNAL LINE B SIGNAL LINE TO POWER CIRCUIT CP502 ON...

Page 22: ...C603 100V4700 C604 100V3300 R611 4 7 C601 100V3300 C602 100V4700 C606 0 1 C613 0 01 C614 0 01 R614 2 7K VCCHI VCCLO GND VCCLO VCCHI Q603 B1BAAJ000003 VOLTAGE REGULATOR D606 B0BA01200008 D607 B0BA02300017 D609 D611 B0BA01900005 TO POWER CIRCUIT CN601 ON SCHEMATIC DIAGRAM 2 Q602 B1BCCG000023 VOLTAGE REGULATOR R612 4 7 R634 47K R635 47K D601 B0FBAM000009 R619 56K C607 18P R620 56K C608 18P R633 820K ...

Page 23: ...12 Printed Circuit Board 12 1 Power P C B A B C D E F G 1 2 3 4 5 6 7 8 9 POWER P C B REPV0068B E A REPV0068C EB 23 SB WA17E SB WA17EB ...

Page 24: ...6 J587 J544 J530 J520 J549 J552 J542 J578 J569 J566 R582 R581 R584 R603 R402 R558 D562 D557 D560 D556 D555 D509 C553 C554 Q555 Q557 C574 C579 C575 Q554 Q553 C578 Q511 Q512 C573 FP1 5A R563 R606 R561 R610 R567 R609 R569 Q556 D510 D502 C546 D599 D598 D597 H503 W500 C580 C514 C560 C516 C515 C570 C647 C576 D501 E501 C513 C517 J515 CN601 CN602 J901 J900 J902 J555 J903 J904 R551 R550 IC501 J517 Q559 C64...

Page 25: ...N502 L500 JK500 J6010 J6007 J6008 R401 J6006 J6005 D500 R579 J6009 R580 C559 D530 R590 Q519 Q515 Q516 D527 R589 R578 C555 C557 Q517 D525 R587 C556 T502 BACK UP TRANSFORMER C558 R588 J6001 J6002 J6003 J6004 F1 250V 5A T501 POWER TRANSFORMER W1 BRW W2 BLU W1 BRW W2 BLU FC502 FC501 D529 J420 E D528 PRIMARY SECONDARY EB 230V 240V 50Hz E 230V 50Hz J420 EB 5 10 15 1 4 3 2 1 7 6 5 4 3 2 1 3 4 1 2 3 1 2 5...

Page 26: ...618 C614 R614 D607 D606 D605 R612 J698 J686 J695 J643 J642 J630 J676 J626 J627 J617 J618 J687 R623 J665 L601 L602 H602 W602 R624 J688 J678 J629 C615 C617 J675 J616 C616 C618 R632 R631 R627 R628 R633 C619 J689 J644 J696 D608 R634 D611 D610 R635 J620 CN604 J679 D609 J621 R625 R626 R611 C621 J628 H603 W603 J624 R630 R629 9 1 1 8 1 1 4 8 1 1 2 3 4 1 2 3 4 8 7 6 5 4 3 2 10 2 3 4 5 6 7 22 3 2 7 6 5 4 3 ...

Page 27: ...P C B AC INLET P C B TRANSFORMER P C B FAN SOLDER SIDE SOLDER SIDE SOLDER SIDE PbF PbF PbF PbF SURROUND LEFT SPEAKER FRONT LEFT SPEAKER FRONT RIGHT SPEAKER SURROUND RIGHT SPEAKER TO MAIN UNIT CENTRE SPEAKER W1 BRW W2 BLU JK500 T502 BACK UP TRANSFORMER W1 BRW W2 BLU 230V 50Hz E 230 240v 50Hz EB AC IN T501 POWER TRANSFORMER CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE PLEASE DO NOT TOUCH THIS P C ...

Page 28: ...e B0FBAM000009 B0AACK000004 2SD0592ARA E C B RSN311W64D P 1 26 B1AACF000117 B1ACCF000094 B1GCCFJJ0016 B C E C B E B1BACG000048 B1BCCG000023 B0EAKM000122 Cathode A Ca Anode B1BAAJ000003 B E C 1 22 RSN312H24A P B0BA01900005 B0BA01100004 B0BA01400009 B0BA5R700008 B0JAPG000019 B0EAKM000117 Anode Cathode A Ca B1GACFJJ0018 C E B 28 SB WA17E SB WA17EB ...

Page 29: ...r Parts without these 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 ...

Page 30: ...15 1 Cabinet 15 1 1 Cabinet Parts Location 30 SB WA17E SB WA17EB ...

Page 31: ...31 SB WA17E SB WA17EB ...

Page 32: ...36 K NAME PLATE LABEL M E 5 RGNV0137 K NAME PLATE LABEL M EB 6 XTS4 20JFJ SCREW CHASSIS M 7 REM0072 4 FAN M 8 RGRX0049F H REAR PANEL M 9 RHD30065 1S SCREW FAN INSULATOR M 10 RHD30119 S SCREW M 11 RHD30092 1 SCREW M 12 RMC0158 S2 TRANSISTOR HOLDER M 13 RMG0606 K FAN INSULATOR M 14 RMN0203 PCB HOLDER M 15 XTB3 10JFJ SCREW M 16 XTB3 16AFJ SCREW REAR PANEL M 17 XTB4 10JFJ SCREW WOOFER UNIT M 18 XTW3 1...

Page 33: ...4 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 D597 B0FBAM000009 DIODE M D598 B0FBAM000009 DIODE M D599 B0FBAM000009 DIODE M D601 B0FBAM000009 DIODE M D602 B0FBAM000009 DIODE M D603 B0JAPG000019 DIODE M Ref No Part No Part Name Description Remarks D604 B0JAPG000019 DIODE M D605 B0...

Page 34: ...4W M R584 D0AE223JA048 22K 1 4W M Ref No Part No Part Name Description Remarks R587 D0AE272JA048 2 7K 1 4W M R588 ERDS2TJ151T 150 1 4W M R589 D0AE103JA048 10K 1 4W M R590 ERDS2TJ102T 1K 1 4W M R600 D0AE473JA048 47K 1 4W M R601 D0AE473JA048 47K 1 4W M R602 D0AE472JA048 4 7K 1 4W M R603 D0AE103JA048 10K 1 4W M R604 D0AE225JA048 2 2M 1 4W M R606 ERG2SJ220E 22 2W M R609 D0AF152JA039 1 5K 1 4W M R610 E...

Page 35: ... M C574 F1E1H1030001 0 01 50V M C575 F1E1H1030001 0 01 50V M C576 F2J1H100A048 10P 50V M C577 ECEA1CKA100B 10 16V M C578 F1E1H1030001 0 01 50V M C579 F1E1H1030001 0 01 50V M C580 ECEA1HKA2R2B 2 2 50V M C601 ECA1SM332C5 3300 100V M C602 ECA1SM472C5 4700 100V M C603 ECA1SM472C5 4700 100V M C604 ECA1SM332C5 3300 100V M C605 ECQE1104KF3 0 1 100V M C606 ECQE1104KF3 0 1 100V M C607 F1D1H1040002 0 1 50V ...

Page 36: ...escription Remarks PACKING MATERIALS Ref No Part No Part Name Description Remarks P1 RPNV0082 POLYFOAM M P2 RPFX0114 MIRAMAT M 15 3 Packing Materials Accessories Parts List 15 4 Packaging 36 SB WA17E SB WA17EB FLE0504 A S E N J ...

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