Sony SA-WFT7 User manual

1
Ver. 1.1 2005. 11
SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
SPECIFICATIONS
Sony Corporation
Home Audio Division
Published by Sony Engineering Corporation
9-879-750-02
2005K04-1
© 2005. 11
HOME THEATRE SPEAKER SYSTEM
SS-FRF7ED
(with WS-FT7)
SA-FT7ED/WFT7/SS-CNF7ED/
FRF7ED/WS-FT7
SS-CNF7ED
AUDIO POWER SPECIFICATIONS (US, CND model)
POWER OUTPUTAND TOTAL HARMONIC DISTORTION:
With 4 ohm loads both channels driven, at 100 Hz; rated 250
watts per channel minimum RMS power, with no more than
10% total harmonic distortion from 250 milliwatts to rated output.
SS-FRF7ED (front/surround speakers)
Speaker system 2 way, magnetically shielded
Speaker units Woofer: 10 cm (4 in.), cone
type
Tweeter: 20 mm (3/4 in.),
dome type
Enclosure type Bass reflex
Rated impedance 8 ohms
Power handling capacity
Maximum input power: 120 W
Sensitivity level 84 dB (1 W, 1 m)
Frequency range 120 Hz – 70,000 Hz
Dimensions (w/h/d) Approx. 130 ×510 ×30 mm
(5 1/8 ×20 1/8 ×1 3/16 in.)
with floor stand Approx. 130 ×1,100 ×30 mm
(AEP, UK model) (5 1/8 ×43 5/16 ×1 3/16 in.)
(Diameter of base: 280 mm
(11 1/32 in.))
with table top stand Approx. 130 ×585 ×30 mm
(5 1/8 ×23 1/8 ×1 3/16 in.)
(Diameter of base: 250 mm
(9 7/8 in.))
with wall mounting bracket
Approx. 130 ×576 ×50 mm
(5 1/8 ×22 3/4 ×2 in.)
Mass Approx. 2.0 kg (4 lb 7 oz)
with floor stand Approx. 7.7 kg (16 lb 15 oz)
(AEP, UK model)
with table top stand Approx. 3.3 kg (7 lb 4 oz)
with wall mounting bracket
Approx. 2.5 kg (5 lb 9 oz)
SS-CNF7ED (center speaker)
Speaker system 2 way, magnetically shielded
Speaker units Woofer: 8 cm (3 1/4 in.), cone
type (×2)
Tweeter: 20 mm (3/4 in.),
dome type
Enclosure type Bass reflex
Rated impedance 8 ohms
Power handling capacity
Maximum input power: 120 W
Sensitivity level 84 dB (1 W, 1 m)
Frequency range 130 Hz – 70,000 Hz
Dimensions (w/h/d) Approx. 500 ×94 ×30 mm
(19 3/4 ×3 3/4 ×1 3/16 in.)
with table top stand Approx. 500 ×108 ×66 mm
(19 3/4 ×4 3/8 ×2 5/8 in.)
with wall mounting bracket
Approx. 500 ×94 ×42 mm
(19 3/4 ×3 3/4 ×1 11/16 in.)
•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.
SA-WFT7 SS-FRF7ED
– Continued on next page –

2
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LASÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
To Exposed Metal
Parts on Set
0.15µF 1.5k
Ω
AC
voltmeter
(0.75V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of aVOM
or battery-operatedAC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale. The
Simpson 250 and Sanwa SH-63Trd are examples of a passive
VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
Mass Approx. 1.6 kg (3 lb 8 oz)
with table top stand Approx. 1.8 kg (3 lb 15 oz)
with wall mounting bracket
Approx. 1.7 kg (3 lb 12 oz)
SA-WFT7 (subwoofer)
Speaker system Active subwoofer,
magnetically shielded
Speaker units Woofer: 15 cm (6 in.), cone
type
Enclosure type Acoustically Loaded
Bass reflex
Reproduction frequency range26 Hz – 200 Hz
Continuous RMS power output
250 W (4 ohms 100 Hz,
10% THD)
Input
LINE IN (input pin jack)
General
Power requirements
US, CND model: 120V AC, 60 Hz
AEP, UK model: 220 – 240V AC, 50/60 Hz
Power consumptions 65 W
0.3 W (standby mode)
Dimensions (w/h/d) Approx. 175 ×610 ×298 mm
(7 ×24 1/8 ×11 3/4 in.)
Mass Approx. 11 kg (24 lb 4 oz)
WS-FT7 (speaker stand)
Dimension (w/h/d) Approx. 130 ×635 ×30 mm
(5 1/8 ×25 ×1 3/16 in.)
(Diameter of base: 280 mm
(11 1/8 in.))
Mass Approx. 5.7 kg (12 lb 9 oz)
Supplied accessories
SA-FT7ED:
Speaker cord (3.5 m) (3)
Speaker cord (10 m) (2)
Pin cord (2 m) (1)
Floor stand (2) (AEP, UK model)
Terminal adapter (4)
Table top stand base (4) (US, CND model)
Table top stand base (2) (AEP, UK model)
Center speaker stand base (1)
Center speaker stand adjuster (1)
Wall mounting bracket (for the front/surround speakers) (4)
Wall mounting bracket (for the center speaker) (1)
Wall mounting hook (10)
Hex-head screw (8)
Screw (M5) (18) (US, CND model)
Screw (M5) (10) (AEP, UK model)
Screw (M4) (20)
Wrench (1)
L-adapter (1)
Sticker for the speakers (1)
Sticker for the terminal adapters (4)
Cleaning cloth (1)
SS-FRF7ED:
Speaker cord (10 m) (1)
Terminal adapter (1)
Table top stand base (1)
Wall mounting bracket (speaker side) (1)
Wall mounting bracket (wall side) (1)
Wall mounting hook (2)
Hex-head screw (2)
Screw (M5) (4)
Screw (M4) (4)
Screw (for wall mounting bracket) (2)
Wrench (1)
Sticker for the speakers (1)
Sticker for the terminal adapters (1)
Cleaning cloth (1)
WS-FT7:
Cleaning cloth (1)
Design and specifications are subject to change without notice.
•Abbreviation
CND: Canadian model

3
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................................................ 7
2-3. POWER Board .................................................................... 7
2-4. Bottom Cover (B) Assy ....................................................... 8
2-5. INPUT Board ...................................................................... 8
2-6. ACIN Board......................................................................... 9
3. DIAGRAMS
3-1. Circuit Boards Location .................................................... 10
3-2. Block Diagram .................................................................. 11
3-3. Printed Wiring Boards –Filter Section– ............................ 12
3-4. Schematic Diagram –Filter Section– ................................ 13
3-5. Printed Wiring Board –Amp Section (1/2)–...................... 14
3-6. Printed Wiring Board –Amp Section (2/2)–...................... 15
3-7. Schematic Diagram –Amp Section– ................................. 16
3-8. Printed Wiring Boards –Power Section–........................... 17
3-9. Schematic Diagram –Power Section– ............................... 18
4. EXPLODED VIEWS
4-1. Front/Surround Speaker Section (SS-FRF7ED) ............... 21
4-2. Center Speaker Section (SS-CNF7ED)............................. 22
4-3. Speaker Stand Section (WS-FT7) ..................................... 23
4-4. Subwoofer Section (1) (SA-WFT7) .................................. 24
4-5. Subwoofer Section (2) (SA-WFT7) .................................. 25
4-6. Bracket, Base Section........................................................ 26
5. ELECTRICAL PARTS LIST ........................................ 27
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

4
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
1-1. SERVICE POSITION (SA-WFT7)
When repairing or servicing this set, arrange the boards as shown below.
SECTION 1
SERVICING NOTES
1-2. NOTE FOR REPLACEMENT OF THE SPEAKER UNIT (SA-WFT7)
FILTER board
POWER boar
d
AMP board
SWITCH board
Pulled and raised gripping
this position with pliers.

5
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.

6
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SECTION 2
DISASSEMBLY
•The equipment can be removed using the following procedure.
2-1. TOP COVER
Note : Follow the disassembly procedure in the numerical order given.
2-1. TOP COVER
(Page 6)
2-2. AMP BOARD,
FILTER BOARD
(Page 7)
SET
2-3. POWER BOARD
(Page 7)
2-5. INPUT BOARD
(Page 8)
2-6. ACIN BOARD
(Page 9)
2-4. BOTTOM COVER (B) ASSY
(Page 8)
1 top cover
three bosses
three bosses
three bosses
2
3
CN302 (2P)
4 CN301 (2P)

7
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
2-2. AMP BOARD, FILTER BOARD
2-3. POWER BOARD
0 CN603 (8P)
qg CN601 (2P)
1 CN801 (3P
)
2 CN402 (2P)
3 CN403 (3P)
4 CN401 (7P)
6 two knobs (VOL)
7 two nuts
8 control panel
9 FILTER board
5 two tapping screws (1)
(3.5
× 14)
qa two screws
(+BVTP 3
× 8)
qs two screws
(+BVTP 3
× 8)
qd screw
(+BVTP 3
× 6)
qf AMP board
5 CN201 (2P)
6 CN202 (3P)
7 CN203 (7P)
8 CN205 (8P)
1 three screws
(+BVTP 4
× 16)
9 three screws
(+BVTP 3
× 8)
qa POWER board
0 two screws
(+BVTP 3
× 8)
2 two screws
(+BVTP 4
× 16)
4
3
screw
(+BVTP 4
× 16)
Ver. 1.1

8
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
2-4. BOTTOM COVER (B) ASSY
2-5. INPUT BOARD
1 screw
(+BVTP 4
× 16)
9 tapping screw (1)
(3.5
× 14)
qs bottom cover (B) assy
0 two tapping screws (1)
(3.5
× 14)
qa two tapping screws (1)
(3.5
× 14)
5 screw
(+BVTP 4
× 16)
3 screw
(+BVTP 4
× 16)
7 screw
(+BVTP 4
× 16)
2 foot cover (B)
6 foot cover (B)
4 foot cover (A)
8 foot cover (A)
5 two tapping screws (1)
(3.5
× 14)
9 CN701 (3P)
qs INPUT board
qd bottom cover (A)
0 CN901 (2P)
6 two tapping screws (1)
(3.5
× 14)
7 two tapping screws (1)
(3.5
× 14)
qa tapping screw (1)
(3.5
× 14)
8
2
screw
(+KTP 3.5
× 12)
4 screw
(+KTP 3.5
× 12)
1 peel the ornamental panel (RR
)
3 peel the ornamental panel (FR)
Ver. 1.1

9
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
2-6. ACIN BOARD
1 CN902 (2P)
2 two screws
(+BVTP 3 × 8)
3 ACIN board
Ver. 1.1

10
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SECTION 3
DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
Note on Schematic Diagram:
•All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•2: nonflammable resistor.
•C: panel designation.
Note:
The components identi-
fied by mark 0or dotted
linewithmark 0are criti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposantsidentifiéspar
une marque 0sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
•A: B+ Line.
•B: B– Line.
•Voltage is dc with respect to ground under no-signal
(detuned) condition.
•Voltagesaretakenwitha VOM (Input impedance 10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : POWER ON
∗: Impossible to measure
•Signal path.
F: LINE
•Abbreviation
CND : Canadian model.
Note on Printed Wiring Boards:
•X: parts extracted from the component side.
•: Pattern from the side which enables seeing.
•Abbreviation
CND : Canadian model.
C
B
These are omitted.
E
Q
B
These are omitted.
C
Q
Q
E
BCE
LED boar
d
SW board
AMP board
FILTER board
POWER board
ACIN board
INPUT board

11 11
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
3-2. BLOCK DIAGRAM
3
J701
INPUT 3
4
1
6 7
1 75 75 1 46
22
28
573736
21
18
17
POWER
AMP
Q651-654
50
3
5
4
64
63
POWER
AMP
Q671-674
THWINT THWEXT FEEDRIN FEEDLIN
GNLS
IN L+
55 MUTE
18 VD
16
VG H
2F/B
IN R-
GNL
GPL
GPLS
GPRS
GPR
GNR
GNRS
MUTE
Q602,603,607
DC
OFFSET
Q690,692,693
DC VOLTAGE
DETECT
Q604-606
PROTECTION
Q502,503
FILTER
Q501
FILTER AMP
IC503 (1/2)
PHASE AMP
IC503 (2/2)
PRE AMP
IC501 (1/2) AMP
IC502 (2/2)
AMP
IC501 (2/2)
AMP
IC502 (1/2)
DRIVER AMP
IC601
75
SIGNAL
DETECT
Q401,402
VOLTAGE
DETECT
Q403
+6.2V REG
Q404
RECT
D201-204
T201
POWER
TRANSFORMER
RELAY/LED
DRIVE
Q201-203,206
SIGNAL AMP
IC401
12 76
AUTO POWER OFF DETECT
IC402
VR501
BASS BOOST
VR502
LEVEL
OVERLOAD
PROTECT
Q204,205,207
INPEDANCE
DETECT
Q600,689,691
SUB+9V +6.2V
SUB+9V
+15V REG
Q505,506,551
+25V +15V
-15V REG
Q507,508,552
-25V -15V
AC OFF
DETECT
Q208
D206
RY201
RY202
RECT
D101
RECT
D151
DC DETECT
PH101
ON/OFF
DRIVE
Q102
ON/OFF
DRIVE
Q101
12
VG L
9
OCP
8
VCI
SP901
SPEAKER
D604
+25V
SUB+9V
D107
D159
• Signal path
: LINE
+25V
-25V
T101
DC-DC CONVERTER
TRANSFORMER
S501
PHASE
REVERSE NORMAL
S401
POWER SAVE
S301
POWER
LD801
ON/STANDBY
OFF
AUTO
RY201
RY202
GREEN
RED
F901
AC IN
~
DC-DC CONVERTER
IC101

1212
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
3-3. PRINTED WIRING BOARDS — FILTER SECTION — • Refer to page 10 for Circuit Boards Location.
1
A
B
C
D
E
2345678910111213
INPUT
Q506
Q505
Q507
Q508
R533
R531
R530
C533
C404
IC503
IC502 IC501
C411
R527
R514
R513
R517
R525
R512
R510
R405
C412
R408
D401
R535
Q503
Q502
D404
R504
R506
R503
R518 R515
R508
R511
R509
R522
R528
R516
R526
R519
R524
R520
R521
R402
C410
D403
R404
R401
R406
D501
R410
R409
R412
R413
R536
R505
R403
C408
C557
C558
C553
C554
C551
C552
C409
C405
C559
IC402
IC401
D500
D402
R407
R523
Q501
C501
Q403
Q402
Q401
R411
JP402
JP405
JP406
JP407
JP408
JP411
JP412
JP415
JP416
JP419
JP421
JP424
JP404
JP418
JP409
JP401
JP410
JP413
JP420
JP422 JP423
JP425
JP403
CNP401
JP414
C520
D552
R551
S501
C521
CN403
VR502
LEVEL
POWER SAVE
S401
AUTO OFF
PHASE
S501
BASS
BOOST
NORMAL REVERSE
VR501
CN401
Q404
CN402
D405
D551
C503
C407
C502
C518
C556
C516
C517
S401
C555
C505
C506
C507
C508
C509
C511 C512
FB501
L551
L552
C406
C402
C560
R552
Q552
Q551
C403
JP417
C510
1
13
7
3
1
2
1
WHT
GRY
GRY
GRY
GRY
GRY
GRY
BLK
GRY
WHT
WHT RED BLK
RED
WHT
BP0WER
BOARD
CN203
AAMP BOARD
CN602
1-865-571-
11
(11)
1-865-572-
11
(11)
C701
C702
R701
CNP701
J701
CN701
-1
-2
-1
-2
(Page 15)
(Page 17)
Ref. No. Location
D401 D-6
D402 C-5
D403 C-5
D404 C-5
D405 C-3
D500 C-4
D501 C-5
D551 B-7
D552 B-7
IC401 C-7
IC402 D-4
IC501 B-4
IC502 B-3
IC503 C-2
Q401 D-6
Q402 D-6
Q403 D-5
Q404 D-4
Q501 C-1
Q502 B-2
Q503 B-2
Q505 B-8
Q506 B-7
Q507 B-9
Q508 B-8
Q551 B-6
Q552 B-6
• Semiconductor
Location

13 13
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
3-4. SCHEMATIC DIAGRAM — FILTER SECTION —
(Page 18)
R411
C501
R523
C402
C406
C512C511
C510
C508
C506
C505
C559
C405
C409
C552
C551
C554
C555 C553
C558
C557
C408
R403
R505
C517
C516
C556
C518
C502
C407
C403
C503
D551
D405
CN402
R413 R412
R409
R410
R406
R401
R404
C410
R521
R520
R524
R519 R526 R516
R528
R522
R509
R511
R508
R515
R503
R506
R504
C412
R405
R510
CN401
S401
CN403
R512
R513 R514
R527
C404
D552
R531
R533
Q508
Q507
C533
R530
C701
CN701
R701
R551
R552
C520
C521
R535
R536
D500 D501
R407
R408
C702
R517
R518
R525
C560
C509
C507
R402
Q501
Q403
D402 D404
D403
Q502 Q503
Q551
Q505
Q552
Q404
D401
C411
S501
J701
IC401(2/2) IC401(1/2)
Q401
Q402
IC402(2/2)
IC402(1/2)
L551
L552
Q506
FB501
IC502(1/2)
IC501(2/2)
IC502(2/2)
IC503(1/2)
IC503(2/2)
IC501(1/2)
VR501
VR502
(Page 16)

1414
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
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.
1
A
B
C
D
E
F
G
H
I
J
234567891011121314
1-865-569-
11
(11)
R666
R665
R681
Q603
R671
R675
C674
C672
R601
R667
Q691
C605
R655
R689
C619
R685
R686
C603
C618
R669
R661
IC601
R603
R604
R657
R687
C606
R608
C623
R677
C622
C652
R651
C654
Ref. No. Location
IC601 C-6
Q603 B-8
Q691 B-5
• Semiconductor
Location (Side A)

15 15
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
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
A
B
C
D
E
F
G
H
I
J
234567891011121314
C
A
SPEAKER
RED+
BLK-
RED
BLK
C611
R659
C610
R679
C608
C626
R674
C663
C653
R682
C683
R680
R653 R673
R692
R691
R693
Q600
C627
C662
C651
C682
C671
C630
R614
R699
R694
R609
C615
C613
R610
R656
R622
R662
R660
C693
CP601
EP601
R621
Q692
R617
C637
R612
Q602
R611
Q605
Q606
Q604
C636
R620
D605
R619
R676
R654
Q693
R695
Q690
R698
R697 D607
Q689
C691
THP601
R696
Q607
C629
C673
C686
C685
C612
C607
R646
R647
R648
R649
CNP601
CNP603 CNP604
CN602
L601
C676
C692
C601
C620
C656
Q673
Q672
Q671 Q674
R663
CNP602
R683
L602
C665
C677
C675
C679
C628
CN601
SP901
C624
CN603
C617
C616
Q653 Q652 Q651
Q654
C667
C659
C632
R630
L651
C657
C621
C655
C602
CP602
C625
L671
R605
L605
C609
C614
C687
G
D
S
G
D
S
G
D
S
G
D
S
S
D
G
S
D
G
S
D
G
S
D
G
1
12
8
CN602
WHT
GRY
WHT
GRY
GRY GRY GRY GRY GRY GRY
CN603
1
12
8
POWER
BOARD
CN205
FILTER
BOARD
CN402
1-865-569-
11
(11)
(Page 12)
(Page 17)
Ref. No. Location
D605 D-8
D607 H-4
Q600 G-3
Q602 B-9
Q604 D-9
Q605 C-8
Q606 C-8
Q607 C-9
Q651 C-3
Q652 D-3
Q653 E-3
Q654 F-3
Q671 F-10
Q672 E-10
Q673 D-10
Q674 C-10
Q689 G-3
Q690 G-4
Q692 H-4
Q693 H-3
• Semiconductor
Location (Side B)

1616
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
3-7. SCHEMATIC DIAGRAM — AMP SECTION — • Refer to page 19 for IC Block Diagram.
IC B/D
Q693
R696
CN602
C692
C614
L602
CN601
C630
CN603C605
R694
R609
C619
R610
C618
C616
C609
C693
R604
Q692
R612
Q602
C606
Q605
C636
R620
D605
R619
Q690
R697
D607
Q689
THP601
C625
R611
C617
C632
R699
L601
C624
C652
C654
C672
C674
R682
R676
R656
R662R661
R655
R675
R681
R654
R674
R680
R663
R683
R698
R667
R669
R687
C687
L651
L671
R660
C629
C637
C613
C615
C611
C608
C610
C622
C623
C657
C665
C667
C677
C659
C679
C626
C627
R692R691 R693
C691
C686
R614
C602
C601
R622
R621
C603
R601R608
C628
C612
R617
R689
C676
C675
C655
C656
R605
C620
C621
C607
SP901
R666 R665
R686 R685
Q603
Q607
Q606
Q604
C685
C673
C671
C651
C653
R659
R653
R673
R679
C663
R647
Q653
Q654
R646
C662
R657
R651
Q674 R649
C683
Q673
R648
C682
R671
R677
EP601
R695
Q691
Q600
L605
IC601
R630
R603
Q672
Q671
Q651
Q652
(Page 13)
(Page 18)

17 17
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
3-8. PRINTED WIRING BOARDS — POWER SECTION — • Refer to page 10 for Circuit Boards Location.
1
A
B
C
D
E
F
G
H
I
J
234567891011121314
B
FILTER
BOARD
CN401
C
AMP BOARD
CN603
ON/STANDBY
G
(ON) RR
(STANDBY)
DC-DC CONVERTER TRANSFORMER
US,CND MODEL
AEP,UK
MODEL
POWER
TRANSFORMER
AEP,UK
MODEL
AEP,UK
MODEL
US,
CND
MODEL
US,CND
MODEL
POWER
CN901
AC IN
~
C901
R901
F901
CN902
CN301
S301
CN302
C301
C801 C802
CN801
LD801
C155
R124
C156
C113
Q202
R203
R211
Q201
R201
Q204
C208
R210
R206
R208
R205
C206
C205
Q205
R207
R209
Q206
C114
R113
R114
C118
D103
R115
R116
C117
C119
D106
D105
C207
C120
R121
D102
R151
R119
R152
Q207
R202
R130
Q203
R131
R133
R212
R213
C210
Q208
R134
D110
JP105
JP106
JP107
JP108
JP109
JP110
JP111
JP112
JP113
JP116
JP117
C111
JP118
JP119
JP120
JW101
JP114
WHT
GRY
WHT
GRY
GRY
WHT
GRY
GRY
GRY
GRY
GRY
GRY
GRY
WHT
GRY
GRY
GRY
GRY
GRY
GRY
GRY
CNP101
CNP102
CNP104
JP101
JP102
JP103
C131
C116
IC101
D101
R111
LF101
D151
C112
Q102 Q101
C105
C110
C152
R132
R101
D202
D201
D203
TH101
CN203
CN202
EP151
CN201
T201
C203
RY202
C202
CN202
C101
BLU
BRN
BLU
BRN BRN
BLU
BLU
BRN
C115
T101
R117
C123
C124
C151
C122
PH101
D104
JW102
R123
D159
R118
RY201
D205
D107
D204
R112
R120
D109
D111
C209
D206
LF102
JW103
C103
CN205CN205
CP102
C104
R122
JP115
C204
C127
C121
CNP103
G
S
D
G
S
D
18
10
1
9
34
21
~
~~
~
21
21
2
12
1
1
1
1818
7
3
13
13
21
1-865-575-
11
(11)
1-865-574-
11
(11)
1-865-573-
11
(11)
1-865-570-
11
(11)
(Page 15)
(Page 12)
Ref. No. Location
D101 C-9
D102 B-6
D103 B-6
D104 C-6
D105 C-6
D106 C-7
D107 D-5
D110 B-6
D111 D-5
D151 E-3
D159 F-5
D201 G-6
D202 G-6
D203 G-6
D204 G-6
D205 E-6
D206 G-6
•Semiconductor Location
IC101 C-7
LD801 I-5
PH101 E-5
Q101 B-5
Q102 C-5
Q201 G-6
Q202 G-6
Q203 G-6
Q204 G-5
Q205 G-5
Q206 G-6
Q207 G-5
Q208 F-4
Ref. No. Location
Ver. 1.1

1818
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
3-9. SCHEMATIC DIAGRAM — POWER SECTION — • Refer to page 20 for IC Pin Description.
(Page 16)
R124
C121
D202
D201
D203
R203R201
C208
R206
R208
R205
CN203
C206
C205 R207
R209
CN201
CN202 C207
R121
R151
C127
R119
R152
R202
D205
R131
D204
CN205
D206 C209
R122
D104
CN801
C801
C802
R101
C151
C152
C103
S301
C101
CNP101
C204
RY202
RY201
C112
JW101
JW103
JW102
LF102LF101
TH101
F901
Q203
Q204
Q205
Q101
IC101
C113
C119
C120
C122
C123
Q102
C155
C156
C210
R213
C114
C116
C115
C118
C117
R212
D101
R118
R120
D109
C124
R123
R132
D151
CP102
T201
C203
C202
CN302CN301CN902CN901
R117
C105
C104
C110
R111
R112
R113
R134
R114
R115 R116 R130 R133
D106
D103
D105
D102
D110
D111
D107
PH101 D159
C131
T101
Q208
EP151
Q207
Q202
Q206
Q201
C301
C901
LD801
C111
R901
R210 R211
(Page 13)

19
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
• IC Block Diagram
IC601 TDA7570 (AMP BOARD)
33
32 31 30 29 28 27
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
26 25 24 23 22 21
OSC
I-O-FCLK
O0-15
THWINT
THWEXT
NTC
5VDIG
+VS-LOW
IN_L-
IN_L+
IN_R+
IN_R-
-2.5V
GPLS
-VS+5
GPL
DGND
CD CDSEL1 FEEDLIN -VS2 CDSEL2 -VS1 -VS+VREFL SNL2 GNLS
GNL
SNL1
SGND
+2.5V
ST-BY
FEEDRIN
-VS3
MUTE
-VS4
-VS+VREFR
SNR2
GNRS
GNR
SNR1
SPL2
PGND
SPL1
+VS
SPR1
SPR2
+VS-5
GPRS
+VS-VREF1
GPR
TERM.
LEFT
CHANNEL
SIGNAL
PROCESSING
INTERFACE
CHANNEL LEFT LSD +
PROTECTIONS
CHANNEL LEFT HSD +
PROTECTIONS
CHANNEL RIGHT HSD +
PROTECTIONS
CHANNEL RIGHT LSD +
PROTECTIONS
INTERFACE
RIGHT
CHANNEL
SIGNAL
PROCESSING
REF
54 55 56 57 58 59 60 61 62 63 64
4
3
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2
1
CLIP

20
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
1VSENSE I Terminal for detection of AC line voltage.
2F/B I Terminal for frequency modulation with FB.
3CTICapacitor for oscillator.
4RTIOscillator frequency setting resistor
5GND — Ground
6TIMER I Capacitor determines the period of abnormal detection.
7SSICapacitor for a soft start timing.
8VC1 I Power supply terminal for the control circuit.
9OCP I Terminal for over current detection and didt protection.
10 VC2 O Power supply terminal for a driver.
11 P_GND — Ground for low side driver.
12 VG_L O Output of low side driver.
13 — — Not used. (Open)
14 VB O Power supply terminal for high side driver.
15 VS I Reference voltage terminal for high side driver.
16 VG_H O Output of high side driver.
17 — — Not used. (Open)
18 VD I Terminal for Drain-Kick starting.
• IC Pin Description
IC101 CXD9841P (DC-DC CONVERTER) (POWER Board)
Pin No. Pin Name I/O Pin Description