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SA-FT7ED/WFT7/SS-CNF7ED/
FRF7ED/WS-FT7
SERVICE MANUAL
US Model
Canadian Model
Ver. 1.1 2005. 11
AEP Model
UK Model
SA-WFT7 SS-FRF7ED SS-FRF7ED SS-CNF7ED
(with WS-FT7)
• SA-FT7ED is composed of following models.
COMPONENT MODEL NAME
FRONT/SURROUND SPEAKER SS-FRF7ED
CENTER SPEAKER SS-CNF7ED
SUBWOOFER SA-WFT7
SPEAKER STAND WS-FT7
WS-FT7 is not included in US and Canadian model.
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US, CND model) Mass Approx. 2.0 kg (4 lb 7 oz)
with floor stand Approx. 7.7 kg
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 Mass Approx. 1.6 kg (3 lb 8 oz) SAFETY CHECK-OUT with table top stand Approx. 1.8 kg (3 lb 15 oz) with wall mounting bracket After correcting the original service problem, perform the following Approx. 1.7 kg (3 lb 12 oz) safety check before releasing the set to the customer: SA-WFT7 (subwoofer) Check the antenna terminals, metal trim, “metallized” knobs, screws, Speaker system Active subwoofer, and all other exposed metal parts for AC leakage. Check leakag
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 TABLE OF CONTENTS 1. SERVICING NOTES 1-1. Service Position (SA-WFT7) .............................................. 4 1-2. Note for Replacement of the Speaker Unit (SA-WFT7) ..... 4 1-3. Note for Disassembly of the Top Cover (SS-FRF7ED) and Side Cover (SS-CNF7ED) ............................................ 5 2. DISASSEMBLY 2-1. Top Cover ............................................................................ 6 2-2. AMP Board, FILTER Board
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 SECTION 1 SERVICING NOTES 1-1. SERVICE POSITION (SA-WFT7) When repairing or servicing this set, arrange the boards as shown below. FILTER board SWITCH board AMP board POWER board 1-2. NOTE FOR REPLACEMENT OF THE SPEAKER UNIT (SA-WFT7) Pulled and raised gripping this position with pliers. 4
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 1-3. NOTE FOR DISASSEMBLY OF THE TOP COVER (SS-FRF7ED) AND SIDE COVER (SS-CNF7ED) Pry the cover with a scraper to aboid damage. 5
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 SECTION 2 DISASSEMBLY • The equipment can be removed using the following procedure. SET 2-1. TOP COVER 2-4. BOTTOM COVER (B) ASSY (Page 6) (Page 8) 2-2. AMP BOARD, 2-5. INPUT BOARD FILTER BOARD (Page 8) (Page 7) 2-6. ACIN BOARD 2-3. POWER BOARD (Page 9) (Page 7) Note : Follow the disassembly procedure in the numerical order given. 2-1. TOP COVER 1 top cover three bosses three bosses 2 4 CN301 (2P) three bosses 3 CN302 (2P) 6
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 Ver. 1.1 2-2. AMP BOARD, FILTER BOARD qg CN601 (2P) 0 CN603 (8P) qd screw (+BVTP 3 × 6) qa two screws (+BVTP 3 × 8) qs two screws 2 CN402 (2P) (+BVTP 3 × 8) 5 two tapping screws (1) 3 CN403 (3P) (3.5 × 14) 4 CN401 (7P) qf AMP board 7 two nuts 1 CN801 (3P) 9 FILTER board 6 two knobs (VOL) 8 control panel 2-3. POWER BOARD 2 two screws (+BVTP 4 × 16) 1 three screws (+BVTP 4 × 16) 4 3 screw (+BVTP 4 × 16) 8 CN205 (8P) qa POWER board 9 three screws (+BVTP 3 × 8)
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 Ver. 1.1 2-4. BOTTOM COVER (B) ASSY 3 screw 0 two tapping screws (1) (+BVTP 4 × 16) (3.5 × 14) 4 foot cover (A) 1 screw (+BVTP 4 × 16) qa two tapping screws (1) (3.5 × 14) 5 screw (+BVTP 4 × 16) 2 foot cover (B) 6 foot cover (B) 7 screw (+BVTP 4 × 16) 9 tapping screw (1) (3.5 × 14) 8 foot cover (A) qs bottom cover (B) assy 2-5. INPUT BOARD 7 two tapping screws (1) qa tapping screw (1) (3.5 × 14) (3.5 × 14) 6 two tapping screws (1) 8 (3.5 × 14) 5 two tapping
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 Ver. 1.1 2-6. ACIN BOARD 2 two screws 1 CN902 (2P) (+BVTP 3 × 8) 3 ACIN board 9
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 SECTION 3 DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION AMP board FILTER board LED board POWER board SW board ACIN board INPUT board Note on Schematic Diagram: Note on Printed Wiring Boards: • All capacitors are in µF unless otherwise noted. (p: pF) • X : parts extracted from the component side. 50 WV or less are not indicated except for electrolytics • : Pattern from the side which enables seeing. and tantalums. • Abbreviation 1 • All resistors are in Ω and /4 W or
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 3-2. BLOCK DIAGRAM S501 DRIVER AMP PHASE IC601 PRE AMP VR502 REVERSE NORMAL 28 FILTER AMP AMP AMP AMP IC501 (1/2) LEVEL IC503 (1/2) IC502 (2/2) IC501 (2/2) IC502 (1/2) GNLS 22 J701 GNL 21 POWER 3 1 3 PROTECTION INPUT 1 5 7 5 7 3 1 46 SP901 IN L+ AMP Q502,503 4 18 GPL SPEAKER Q651-654 PHASE AMP GPLS 17 50 IN R- IC503 (2/2) FILTER 5 GPRS 6 7 D604 Q501 DC VOLTAGE MUTE 4 POWER VR501 +25V 55 GPR DETECT MUTE Q602,603,607 AMP Q604-606 BASS BOOST 64 GNR Q671-674 DC
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 3-3. PRINTED WIRING BOARDS — FILTER SECTION — • Refer to page 10 for Circuit Boards Location. 1 23456789 10 11 12 13 A C559 L551 CNP401 R551 Q505 R536 C511 Q506 C512 P0WER WHT Q502 Q503 R524 1 R521 B BOARD FB501 GRY C507 R519 R514 CN203 R517 B GRY R525 R518 R515 R528 (Page 17) GRY R523 R526 Q552 GRY C518 C520 C554 R552 IC502 IC501 L552 GRY IC503 GRY R401 13 7 R403 C405 JP418 R503 C510 Q501 R508 C509 11 BLK C408 C503 3 C (11) C412 R504 JP409 RED C506 JP410 1
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 3-4. SCHEMATIC DIAGRAM — FILTER SECTION — C410 CN401 R411 R405 D403 C408 R410 C404 Q403 D402 D404 C405 R403 R408 R409 D500 C552 Q401 D501 Q552 C406 L552 C551 R401 (Page 18) R407 Q404 C559 D401 R533 IC402(2/2) C411 C558 R552 S401 Q507 R402 C407 R413 R412 IC401(2/2) C402 R406 R535 IC401(1/2) C403 C556 C409 R404 C520 C554 Q402 Q508 D405 C412 IC402(1/2) FB501 C521 C553 C555 R536 Q505 C557 R551 Q506 R531 C560 C517 L551 R512 R522 Q551 IC503(1/2) IC501(1/2) C502 S5
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 3-5. PRINTED WIRING BOARD — AMP SECTION (1/2) — • Refer to page 10 for Circuit Boards Location. 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A R608 C606 B Q691 • Semiconductor C619 Location (Side A) Ref. No. Location IC601 C-6 R686 R604 Q603 B-8 R685 R665 Q691 B-5 C R651 R689 IC601 R667 R677 D C622 E R669 R657 R671 F R687 G H I J 11 1-865-569- (11) SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 14 14 Q603 R675 R681 C672 C674 C618 C623 C605 R603 R601 C603 C654 C652 R666 R661 R65
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 3-6. PRINTED WIRING BOARD — AMP SECTION (2/2) — • Refer to page 10 for Circuit Boards Location. 1 23456789 10 11 12 13 14 RED+ SP901 BLK- SPEAKER A CN601 C685 CP602 RED C617 BLK C601 C602 R630 B • Semiconductor Location (Side B) C628 Ref. No. Location CNP603 C629 CNP604 THP601 C616 D605 D-8 Q606 G S R609 D607 H-4 C630 D D Q600 G-3 R611 C S G Q602 B-9 R619 Q605 Q604 D-9 C636 C673 Q605 C-8 Q606 C-8 Q607 C-9 Q604 Q651 C-3 G S Q652 D-3 Q653 E-3 D D C611 C656 D
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 3-7. SCHEMATIC DIAGRAM — AMP SECTION — • Refer to page 19 for IC Block Diagram. CN602 (Page 13) R694 Q691 C687 L605 CN601 R630 SP901 R666 R665 R605 Q689 R697 R660 C686 D607 C607 C654 R661 R662 R659 Q600 Q653 R698 C608 R604 C663 C609 R669 C653 C610 R691 R692 R647 R699 Q654 R657 C656 R693 L651 Q690 C691 C657 C659 Q692 Q652 R651 R646 C655 C665 C603 R667 C651 R663 C662 C692 Q693 R683 Q651 R608 R601 R653 R695 C652 R655 R656 C667 R603 R696 C677 C679 R654 THP601 C
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C110 SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 Ver. 1.1 3-8. PRINTED WIRING BOARDS — POWER SECTION — • Refer to page 10 for Circuit Boards Location. 1 23456789 10 11 12 13 14 A C131 T101 CNP102 DC-DC CONVERTER TRANSFORMER C122 R112 R118 R113 G B 18 1 R131 D C113 S C114 CNP101 R114 AEP,UK JW101 R134 MODEL JW102 C115 JP107 JW103 C116 C G 10 9 D D106 C117 S C103 C121 R133 R130 R116 R123 D107 D US,CND MODEL AC IN ~ R132 D111 C127 TH101 D151 LF102 34 ~~ RY202 2 1 CN901 C155 C156 E R901 21 RY201 C901 JP1
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 3-9. SCHEMATIC DIAGRAM — POWER SECTION — • Refer to page 20 for IC Pin Description. R111 R113 T101 R112 R117 IC101 JW102 D151 JW103 C113 CN205 Q101 C111 C151 C155 R118 D102 R131 TH101 C122 C114 JW101 LF101 LF102 R119 C105 D110 R134 C103 C124 C152 C119 C156 R101 D103 Q102 R114 (Page 16) C104 D105 C115 D104 D101 R120 C123 C210 C116 R122 R121 C131 C117 R213 C110 D106 R123 C118 C120 C121 C112 R115 R116 R130 R133 CNP101 D159 PH101 Q208 R124 R152 R151 D109 R132 C
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 • IC Block Diagram IC601 TDA7570 (AMP BOARD) 32 31 30 29 28 27 26 25 24 23 22 21 CLIP I-O-FCLK 33 OSC 34 O0-15 35 20 THWINT 36 19 THWEXT 37 TERM. 18 GPL NTC 38 17 GPLS 39 16 5VDIG 40 15 -VS+5 41 14 SPL2 +VS-LOW 42 13 SPL1 43 12 +VS 44 CHANNEL LEFT LSD + 11 LEFT PROTECTIONS IN_L- 45 CHANNEL 10 PGND INTERFACE IN_L+ 46 SIGNAL CHANNEL LEFT HSD + 9 +VS-VREF1 PROCESSING 47 PROTECTIONS 8 SPR1 7 SPR2 48 CHANNEL RIGHT HSD + RIGHT 6 +VS-5 PROTECTIONS IN_R+ 49 CHANNEL
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SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7 • IC Pin Description IC101 CXD9841P (DC-DC CONVERTER) (POWER Board) Pin No. Pin Name I/O Pin Description 1 VSENSE I Terminal for detection of AC line voltage. 2 F/B I Terminal for frequency modulation with FB. 3CTI Capacitor for oscillator. 4RTI Oscillator frequency setting resistor 5 GND — Ground 6 TIMER I Capacitor determines the period of abnormal detection. 7SSI Capacitor for a soft start timing. 8 VC1 I Power supply terminal for the control circuit. 9 O
