4-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

• Circuit Boards Location

Note on Schematic Diagram:

All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

f : internal component.

2: nonflammable resistor.

C: panel designation.

Note:

Note:

The components identi-

Les composants identifiés par

fied by mark 0or dotted

une marque 0sont critiques

line with mark 0are criti-

pour la sécurité.

cal for safety.

Ne les remplacer que par une

Replace only with part

pièce portant le numéro

number specified.

spécifié.

 

 

 

 

 

 

U : B+ Line.

V : B– Line.

Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.

no mark : FM

: Impossible to measure

Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances.

Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc- tion tolerances.

Circled numbers refer to waveforms.

Signal path. F : FM J : CD

I : PHONO

Abbreviation

AUS : Australian model

CH

: Chinese model

CND

: Canadian model

MY

: Malaysia model

SP

: Singapore model

Note on Printed Wiring Board:

X: parts extracted from the component side.

Y: parts extracted from the conductor side.

a : Through hole.

b: Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

Caution:

 

Pattern face side:

Parts on the pattern face side seen from

(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side)

the parts face are indicated.

 

 

• Indication of transistor

C

 

Q

These are omitted.

B E

Q

B C E

These are omitted.

Q

B C E

These are omitted.

SP board

DC (1) board

POWER board

DISPLAY board

ROTARY board

BIAS (C) board

BIAS (R) board

BIAS (RS) board

BIAS (LS) board

H.P board

VOL board

DC (2) board

AC board

DIGITAL board

5.1 IN board

AU SW board

MUTING board

VIDEO 3 board (DE945)

V. SWITCH board (E/PX)

BIAS (L) board

S-VIDEO board

VIDEO board (DE845)/

OSD board (DE945)

JOINT (1) (H) board (DE845)/

OSD JOINT (H) board (DE945)

MAIN board

14 14

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Sony STR-DE845 service manual Phono, Cnd

STR-DE845 specifications

The Sony STR-DE845 is a vintage yet impressive 5.1-channel surround sound receiver that has captivated audio enthusiasts since its release. As part of Sony's esteemed line of home audio equipment, this model exemplifies a combination of classic design, robust build quality, and advanced features that enhance the listening experience.

One of the standout features of the STR-DE845 is its power output, capable of delivering 100 watts per channel at 8 ohms. This ample power ensures that your audio experience remains vibrant and dynamic, whether you’re enjoying music or watching movies. The receiver supports a range of speaker configurations, making it versatile enough to accommodate various home theater setups.

Another key characteristic of the STR-DE845 is its compatibility with Dolby Pro Logic and DTS surround sound formats. These technologies bring a cinematic experience into the home, allowing sound to envelop listeners from all directions. The receiver's ability to decode these formats enhances the clarity and immersion of soundtracks, providing an impressive auditory experience.

The STR-DE845 boasts a wide array of connectivity options, including multiple analog and digital inputs, which allow you to connect various audio sources such as CD players, VCRs, and gaming consoles. The inclusion of an AM/FM tuner also opens up the possibility for listening to local radio stations. For convenience, the receiver includes a remote control, enabling users to adjust settings and change inputs from a distance.

In terms of audio processing, the STR-DE845 features Advanced Digital Sound Field Processing (DSFP), which allows users to customize their listening experience based on room acoustics and personal preferences. This technology helps replicate the ambiance of live music venues and movie theaters, delivering an optimized sound experience regardless of the room's characteristics.

The design of the STR-DE845 is another highlight. With a sleek black finish and intuitive layout, this receiver fits seamlessly into any home entertainment setup. The front panel features a clear display, and the user-friendly interface makes navigating settings and configurations straightforward.

Moreover, the receiver's durability is noteworthy. Built with quality components, the STR-DE845 is designed to withstand the test of time, making it a dependable option for audiophiles and casual listeners alike.

In conclusion, the Sony STR-DE845 is a feature-packed surround sound receiver that combines quality, functionality, and a user-friendly experience. With its powerful output, advanced surround sound technologies, and versatility in connectivity, it remains a respectable choice for those looking to elevate their audio and home theater systems.