Sony STR-DE845 service manual Flexible Circuit Board Repairing

FM tuner section

Tuning range 87.5 - 108.0 MHz

Antenna terminals

75 ohms, unbalanced

Sensitivity Mono: 18.3 dBf,

2.2 ∝ V/75 ohms

Stereo: 38.3 dBf,

22.5 ∝ V/75 ohms

Usable sensitivity

11.2 dBf, 1 ∝ V/75 ohms

S/N	Mono: 76 dB
	Stereo: 70 dB

Harmonic distortion at 1 kHz

Mono: 0.3%

Stereo: 0.5%

Separation 45 dB at 1 kHz

Frequency response

30 Hz – 15 kHz +0.5/–2 dB

Selectivity 60 dB at 400 kHz

AM tuner section

Tuning range

Models of area code U, CA With 10-kHz tuning

scale:

530 – 1710 kHz6) With 9-kHz tuning

scale:

531 – 1710 kHz6) Models of area code AU, CN, SP With 9-kHz tuning

scale:

531 – 1602 kHz

Models of area code E

With 10-kHz tuning scale:

530– 1610 kHz6) With 9-kHz tuning

scale:

531– 1602 kHz6)

Antenna Loop antenna

Usable sensitivity

50 dB/m (at 1,000 kHz or 999 kHz)

S/N 54 dB (at 50 mV/m)

Harmonic distortion

0.5% (50 mV/m, 400 kHz)

Selectivity At 9 kHz: 35 dB At 10 kHz: 40 dB

6)You can change the AM tuning scale to

9 kHz y 10 kHz. After tuning in any AM station, turn off the receiver. Hold down the TUNING + button and press the ?/1 button. All preset stations will be erased when you change the tuning scale. To reset the scale to 10 kHz (or 9 kHz), repeat the procedure.

Video section

Inputs Video: 1 Vp-p 75 ohms

S-video:

Y:1 Vp-p 75 ohms

C:0.286 Vp-p

75 ohms

Outputs Video: 1 Vp-p 75 ohms

S-video:

Y:1 Vp-p 75 ohms

C:0.286 Vp-p

75 ohms

General

System	Tuner section:
	PLL quartz-locked
	digital synthesizer
	system
	Preamplifier section:
	Low-noise NF type
	equalizer
	Power amplifier
	section:
	Pure-complementary
	SEPP

Power requirements

Models of area code U,

CA

120 V AC, 60 Hz Models of area code

CN, SP

220 – 230 V AC, 50/60 Hz

Models of area code AU 240 V AC, 50 Hz Models of area code E 120/220/240 V AC,

50/60 Hz

Power consumption

Models of area code U

STR-DE945: 290 W

STR-DE845: 280 W

Models of area code CA

STR-DE945: 345 VA

STR-DE845: 335 VA

Models of area code

CN, SP

STR-DE845: 220 W

Models of area code AU

STR-DE845: 230 W

Models of area code E

STR-DE845: 320 W

•Abbreviation

AU : Australian model

CA : Canadian model

CN : Chinese model

AC outlets

Models of area code U,

CA

2switched, total 120 W/1A

Models of area code

AU, SP

1switched, total 100 W

Models of area code E,

CN

2switched, total 100 W

Dimensions 430 ⋅ 158 ⋅ 378 mm (17 ⋅ 61/4 ⋅ 15 in.) including projecting parts and controls

Mass (Approx.)

10.3 kg (22 lb 12 oz)

Supplied accessories

•FM wire antenna (1)

•AM loop antenna (1)

•LR6 (size-AA) alkaline batteries (3) Models of area code U, CA only

•Audio/video/control S connecting cord (1)

•Control S connecting cord (1) STR-DE945 only

•Remote commander RM-LJ304 (remote) (1)

STR-DE845 only

•Remote commander RM-LP204 (remote) (1)

Design and specifications are subject to change without notice.

MY : Malaysia model

SP : Singapore model

U : US model

Notes on chip component replacement

•Never reuse a disconnected chip component.

•Notice that the minus side of a tantalum capacitor may be dam- aged by heat.

Flexible Circuit Board Repairing

•Keep the temperature of the soldering iron around 270 ˚C during repairing.

•Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

•Be careful not to apply force on the conductor when soldering or unsoldering.

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 AP- PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFÉS 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 PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

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