Panasonic SB-WA880 Service Manual Download

Page: 18 / 31

10.2. Transformer Circuit and AC Inlet Circuit

250V 3.15A

C555

35V4.7

CN502

H503/W503

FC502

FC501

D500

R589

10K

D500

B0AACK000004

Q516

B1GACFJJ0018

SYNC SWITCH

AC IN

110V/127V/

220~230V/240V

50Hz/60Hz

R578

10K

R580

R587

2.7K

C556

0.01

C557

16V100P

C558

16V1000

C559

0.01

R579

3.3K

Q517

B1BACG000048

VOLTAGE REGULATOR

Q515

B1AACF000117

DC DET SWITCH

D528

D527

RLY501

K6B1AEA00003

Z501

ERZV10V511CS

JK500

(BRW)

(BLU)

R401

220K

R590

Q515

Q519

B1AACF000117

DCDET SWITCH

D527, D528

B0EAKM000122

D525

B0BA7R000005

D530

T502

G4C2AAJ00005

C571

25V1000

D530

B0EAKM000122

D529

MA2C700ADF

C581

1000P

Q518

B1AAGC000007

VOLTAGE REGULATOR

D534

B0AACK000004

WHT(W9)

ORG(W10)

Y(W3)

YEL(W4)

RED(W5)

VIO(W6)

LBLU(W7)

BLK(W8)

W10

PCONT

D.GND

SYNC

SYS6V

SUB+B

WHT

ORG

GRY

YEL

BLK

LBLU

VIO

RED

T501

G4C8AHK00005

250V 2A

FC503

FC504

110

220

240

127

110

220

127

240

SCHEMATIC DIAGRAM-3

TRANSFORMER CIRCUIT

POWER CIRCUIT

(CP502) ON

SCHEMATIC

DIAGRAM-2

AC INLET CIRCUIT

VOLTAGE SELECTOR CIRCUIT

POWER CIRCUIT

(CN503) ON

SCHEMATIC

DIAGRAM-2

S500

K0AFZA000005

R588

820K

HELP

: -B SIGNAL LINE

: +B SIGNAL LINE

SB-WA880GC / SB-WA880GCT

Summary of Contents for SB-WA880

Page 1: ...05 Matsushita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law SB WA880GC SB WA880GCT Colour S Silver Type n System SC HT880 GC Music Center SA HT880 GC Satellite Speakers SB HT880 GC Active Subwoofer SB WA880 GC n System SC HT880 GCS Music Center SA HT880 GCS Satellite Speakers SB HT880 GC Active Subwoofer SB WA880 GC n System SC HT880 GS ...

Page 2: ...Block Diagram 14 9 Notes of Schematic Diagram 15 10 Schematic Diagram 16 10 1 Power Circuit 16 10 2 Transformer Circuit and AC Inlet Circuit 18 11 Printed Circuit Board 19 11 1 Power P C B 19 11 2 AC Inlet P C B Transformer P C B and Voltage Selector P C B 21 12 Wiring Connection Diagram 22 13 Illustration of ICs Transistors and Diodes 23 14 Parts Location and Replacement Parts List 24 14 1 Cabine...

Page 3: ...ve 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 vo...

Page 4: ...r is turned on Stops during a performance The function of this circuitry is to prevent circuitry damage if for example the positive and negative speaker connection wires are shorted or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used If this occurs follow the procedure outlines below 1 Turn off the power 2 Determine the cause of the problem and...

Page 5: ... 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 5 SB WA880GC SB WA880GCT ...

Page 6: ...n checks or replacement 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 7 1 Disassembly flow chart The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing To assemble the unit reverse the ...

Page 7: ...7 1 2 Disassembly of Rear Assembly 7 SB WA880GC SB WA880GCT ...

Page 8: ... 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 Subwoofer Cabinet Assembly Step 4 Remove the Front Panel Unit from the Subwoofer Cabinet Assembly as arrow shown 7 2 Disassembly of the Speaker Unit and Checking of the P C B 8 SB WA880GC SB WA880G...

Page 9: ...place the Front Panel Unit firmly back to the cabinet 7 2 2 Disassembly of the Woofer 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 2 Follow Step 1 to Step 4 described in section 7 2 1 9 SB WA880GC SB WA880GCT ...

Page 10: ...Woofer 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 6 screws from the bottom of the woofer unit Step 2 Remove 3 screws from the rear panel 10 SB WA880GC SB WA880GCT ...

Page 11: ...ector CN506 Step 5 Pull 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 Step 1 2 Remove 8 screws from the rear panel Step 3 Disconnect the Voltage Selector from the Rear Panel 11 SB WA880GC SB WA880GCT ...

Page 12: ...checking of the AC Inlet P C B 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 4 described in section 7 2 5 Step 1 Remove the P C B support by pushing the claws as arrow shown Step 2 Disconnect the connector CN502 Step 3 Lift up the AC Inlet P C B as arrow shown Step 4 5 Remove 6 screws Step 6 Remove 4 screws 12 SB WA880GC SB WA880GCT ...

Page 13: ...sistor Follow Step 1 to Step 5 described in section 7 2 4 Follow Step 1 to Step 4 described in section 7 2 5 Step 1 Desolder the Power IC and Transistor terminal Step 2 Remove 2 screws and Power IC501 Step 3 Remove the screw and Transistor holder Step 4 Detach the Power IC and Transistor from Heat sink 13 SB WA880GC SB WA880GCT ...

Page 14: ...2 SWITCH DC_DET Q520 INTERFACE SWITCH Q511 HP_CNT MUTE_H Q515 Q519 DCDET SWITCH VOLTAGE REGULATOR D597 D598 D599 T501 T502 D508 AC2 5 SUBAC2 AC1 4 SUBAC1 TO MAIN BLOCK JK2000 OF SA HT880GC GS GCT GCS S FL1 FL2 B B B Q512 VOLTAGE REGULATOR D527 D530 Q518 VOLTAGE REGULATOR POWER HIC SIGNAL LINES IC501 RSN311W64D P JK500 AC INLET RLY501 POWER TRANSFORMER BACK UP TRANSFORMER JK502 CENTRE SPEAKER CN506...

Page 15: ...rk 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 taki...

Page 16: ... R548 330K R545 220K Q506 B1GCCFJJ0016 INTERFACE SWITCH Q505 B1AACF000117 SWITCHING Q501 Q502 B1AACF000117 SWITCH Q503 B1AACF000117 SWITCH IC501 RSN311W64D P POWER HIC C551 0 01 R525 150K D558 D559 B0AACK000004 D555 B0AACK000004 D562 B0AACK000004 R504 15K 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 SCHEMATIC DIAGRAM 1 POWER CIRCUIT B SIGNAL LINE MAIN SIGNAL LINE B SIGNAL LINE...

Page 17: ...7 C521 0 047 C522 0 047 C523 0 047 C569 0 047 R535 10 R536 10 R537 10 R538 10 FP1 K5G502AA0002 R609 1 5K D561 B0BA01100004 C572 50V100 R560 150 C573 1000P R561 3 9K D509 SRLch FRch FLch PCONT D GND SYNC SYS6V SUB B R571 1 8K 3 1 2 4 HELP 2 4 6 7 5 3 1 3 1 2 4 TO AC INLET CIRCUIT CN502 ON SCHEMATIC DIAGRAM 3 SCHEMATIC DIAGRAM 2 POWER CIRCUIT B SIGNAL LINE MAIN SIGNAL LINE B SIGNAL LINE 1 2 3 4 5 6 ...

Page 18: ... G4C2AAJ00005 C571 25V1000 D530 B0EAKM000122 D529 MA2C700ADF C581 1000P Q518 B1AAGC000007 VOLTAGE REGULATOR D534 B0AACK000004 WHT W9 ORG W10 GRY W3 YEL W4 RED W5 VIO W6 LBLU W7 BLK W8 W8 W7 W6 W5 W9 W10 W3 W4 PCONT D GND SYNC SYS6V SUB B WHT ORG GRY YEL BLK LBLU VIO RED T501 G4C8AHK00005 F2 250V 2A FC503 FC504 2 4 6 7 5 3 1 1 2 3 4 5 6 7 8 110 220 240 127 110 220 127 240 SCHEMATIC DIAGRAM 3 TRANSF...

Page 19: ...76 J511 J537 J574 J575 J596 J595 J594 J593 J538 J577 J532 J598 J591 J592 J512 J568 J521 J534 J571 J572 J570 J528 J539 J573 J536 J597 J410 R535 R565 R583 R581 R536 C550 C522 C532 C531 C530 C533 C519 C520 C518 C521 C569 R606 R538 R530 R531 R533 R534 R537 Q55 D502 CN507 E500 CN501 IC501 C576 JK501 JK502 J626 J501 J502 D501 C513 C CP502 R577 J627 J581 CN506 C523 J623 J414 J621 J625 J622 1 2 1 3 25 24 ...

Page 20: ...65 J543 J588 J506 J579 J565 J576 J511 J532 J564 J510 J598 J541 J559 J516 J585 J558 J583 J584 J586 J587 J544 J530 J520 J549 J552 J542 J578 J569 J566 J535 R565 R582 R583 R581 R584 R603 R402 R558 D562 D557 D560 D556 D555 D509 C554 Q555 Q557 C574 C579 C575 Q554 Q553 C578 Q511 Q512 C573 FP1 5A R563 R606 R561 R610 R609 R569 Q556 D510 D502 C546 D599 D598 D597 CN503 C580 C514 C560 C516 C515 C570 C647 IC50...

Page 21: ... LBLU W3 GRY W10 ORG W5 RED W8 BLK Z501 RLY501 CN502 JK500 J6010 J6007 J6008 R401 J6006 J6005 D500 R579 J6009 R580 C559 D528 R590 Q519 Q515 Q516 D527 R589 R578 C555 C557 Q517 C571 D525 R587 C556 T502 SUB TRANSFORMER R588 J6001 J6002 J6003 J6004 FC502 FC501 W1 BRW W2 BLU Q518 C581 D530 D529 D534 J900 J901 W2 BLU W1 BRW W5 RED W9 WHT W10 ORG W3 GRY W4 YEL W6 VIO W7 LBLU W8 BLK FC504 FC503 H503 W503 ...

Page 22: ...230V 240V 50 60Hz AC IN JK500 W2 BLU W1 BRW 7 1 CN502 T502 BACK UP TRANSFORMER 7 1 CP502 CN507 2 1 CN506 1 4 CN503 15 1 SOLDER SIDE PbF SPEAKER WOOFER FAN JK502 JK501 TO MAIN UNIT CENTER SPEAKER SURROUND RIGHT SPEAKER FRONT RIGHT SPEAKER FRONT LEFT SPEAKER SURROUND LEFT SPEAKER 25 1 24 2 CN501 VOLTAGE SELECTOR P C B D AC INLET P C B TRANSFORMER P C B POWER P C B S500 T501 POWER TRANSFORMER H503 W5...

Page 23: ...N311W64D P 1 26 B1AACF000117 B1GCCFJJ0016 B C E C B E B1BACG000048 B1BCCG000023 B0EAKM000122 Cathode A Ca Anode C B1ACCF000094 E B B0BA01900005 B0BA01100004 B0BA7R000005 B0JAPG000019 B0EAKM000117 Anode Cathode A Ca B1GACFJJ0018 C E B B0BA5R600016 B0BA5R100013 A Ca Cathode Anode B1AAGC000007 E C B 23 SB WA880GC SB WA880GCT ...

Page 24: ...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 sp...

Page 25: ...14 1 Cabinet 14 1 1 Cabinet Parts Location 25 SB WA880GC SB WA880GCT ...

Page 26: ...26 SB WA880GC SB WA880GCT ...

Page 27: ... S SPEC LABEL M GC 5 RGNX0271F S SPEC LABEL M GCT 6 XTS4 16JFJ SCREW TBZP M 7 REM0072 4 FAN M 8 RGRX0040H H REAR PANEL M 9 RHD30065 1S SCREW TBZP M 10 RHD30090 1 SCREW M 11 RHD30119 S SCREW M 12 RMC0158 S2 TR FIXTURE M 13 RMG0606 K FAN INSULATOR M 14 RMN0203 PCB HOLDER M 15 XTB3 10JFJ SCREW M 16 XTB3 16AFJ SCREW TBZP M 17 XTB4 10GFJ SCREW TBZP M 18 XTW3 15TFJ SCREW TBZP M 19 RGPX0174 WOOFER SPACER...

Page 28: ... 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 D597 B0FBAM000009 DIODE M D598 B0FBAM000009 DIODE M D599 B0FBAM000009 DIODE M SWITCHES S500 K0AFZA000005 VOLTAGE SELECTOR M CONNECTORS Ref No Part No Part Name Description Remarks CN501 K1FB125B0095 SYSTEM CON...

Page 29: ...3T 10K 1 4W M R590 ERDS2TJ102T 1K 1 4W M R600 ERDS2TJ473T 47K 1 4W M R601 ERDS2TJ473T 47K 1 4W M R602 ERDS2TJ472T 4 7K 1 4W M R603 ERDS2TJ103T 10K 1 4W M R604 ERDS2TJ225T 2 2M 1 4W M Ref No Part No Part Name Description Remarks R606 ERG2SJ220E 22 2W M R609 ERDS1FVJ152T 1 5K 1 2W M R610 ERD2FCVJ4R7T 4 7 1 4W M CAPACITORS C501 F1D1H102A012 1000P 50V M C502 F1D1H102A012 1000P 50V M C503 F1D1H102A012 ...

Page 30: ...Ref No Part No Part Name Description Remarks PACKING MATERIALS P1 RPNX0317 POLYFOAM M P2 RPFX0071 MIRAMAT BAG M 14 3 Packing Materials Accessories Parts List 30 SB WA880GC SB WA880GCT ...

Page 31: ...15 Packaging 31 SB WA880GC SB WA880GCT FLE0504 A S E N J P ...

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