Sony SS-FRF7ED, SA-WFT7 service manual SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7, Safety CHECK-OUT

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

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 range

26 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:	120 V AC, 60 Hz
AEP, UK model:	220 – 240 V 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)

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 for AC 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 a VOM or battery-operated AC 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)

To Exposed Metal

Parts on Set

0.15µF	1.5kΩ	AC
		voltmeter
		(0.75V)

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

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

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON 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 0 SUR LES

DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ 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.

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