CDX-M800

4-3. BLOCK DIAGRAM — TUNER SECTION —

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PJ401–1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

ELECTRONIC VOLUME

 

 

 

 

 

 

 

 

–2

BUS AUDIO

 

 

 

 

 

 

 

 

CD

 

 

 

IC401

 

 

 

 

 

Q408

 

R-CH

IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

SECTION

4

 

 

 

 

 

 

 

 

 

 

–5

 

 

 

 

 

 

 

(Page 21) A

 

PDL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CDL

42

MDL

LF 25

 

 

 

 

 

 

 

L

AUDIO OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–6

 

 

 

 

 

 

 

 

 

 

32

AC OUT L

 

 

 

 

 

 

 

 

 

FRONT

 

 

 

TUNER UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

Q171

R-CH

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TUX501

 

 

 

 

 

 

31

AC IN L

 

 

 

 

 

 

 

 

 

–3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN503

1

ANT

 

 

 

 

 

 

 

 

 

OUT LR 24

 

 

 

 

 

 

 

L

AUDIO OUT

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–4

(ANTENNA)

 

4

 

 

 

 

40

AML

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q181

R-CH

R

REAR

 

 

 

 

R

3

AM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

SDA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

SCL

OUT SW

17

 

 

 

 

 

 

 

 

CN401

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

MUTE

SA CLK

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MUTE DRIVE

 

 

Q470

 

(SUB OUT(MONO))

 

 

 

 

 

 

 

 

 

 

 

 

SA OUT 16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q401,402

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER AMP/POWER SUPPLY

CNP101

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC201

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SDA 14

 

 

 

 

 

 

 

 

 

 

 

FL

 

5

 

FL+

 

 

 

 

 

SCL 13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM CONTROL

 

 

 

 

12

 

 

 

9

 

 

 

 

 

 

 

AEP,UK,E MODEL

 

 

IC303 (2/3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

FL–

 

 

 

 

 

 

 

 

RDS DECODER

 

 

 

 

 

 

 

 

 

 

9

 

2

 

 

 

 

 

 

 

 

IC502

 

26

VOL ATT

SA IN 43

 

 

 

RL

 

 

RL+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RDS

9

16 FM DET

SDA

9

28

I2C SIO

SA CLK 23

 

 

 

11

 

 

 

10

 

 

 

 

 

 

 

4

OSCD

SCL 10

27

I2C CKO

BUS/AUX

66

 

 

 

 

SDA

 

 

 

 

 

 

 

 

 

 

 

 

2

7

 

RL–

 

 

 

 

 

 

 

5

OSCI

DAVN

8

17

DAVN

ATT 25

 

 

 

4

SCL

 

 

4

 

 

 

 

 

 

 

BEEP 20

 

 

 

16

 

 

 

 

 

 

 

 

 

 

X501

 

 

 

 

 

 

 

 

 

 

 

FR+

 

 

 

 

 

 

 

4.3MHz

 

 

 

 

 

AMP STB 41

 

 

 

22 STB

 

 

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R-CH

FR–

 

 

 

 

QUALITY

5

 

 

 

 

80

QUALITY

AMPDIAG 40

 

 

 

25 DIAG

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

RR+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

 

 

 

 

 

 

 

 

XOUT

9

 

 

+10V

34 DISP;B

 

 

RR–

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

TU MUTE

7

 

 

 

 

32

TUNER ATT

 

 

AU+8V

30 AU8V

SW1 29

 

 

 

 

 

 

 

 

 

 

 

X301

 

 

AMP REM

 

 

 

MUTE CONDITION

8

 

 

 

 

73

TU ATT IN

 

 

32.768kHz

 

+5V

37 U-COM

SW2 27

 

6

 

 

 

 

 

 

 

 

XIN

8

 

 

ANT REM

 

 

 

S-METER

6

 

 

 

 

82

VSM

 

 

 

 

DR+6V

33 MECHA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OSCOUT

11

X302

 

A+5V

31 SERVO

VP2 6

 

 

 

 

 

 

 

SDA

17

 

 

 

 

33

EESIO

 

 

 

 

 

 

 

 

 

EEPROM

 

 

 

 

OSCIN

13

6MHz

Q103

AU+5V

 

 

VP1 20

 

 

 

 

 

 

SCL

16

 

 

 

 

34

EECKO

 

D+5V

 

 

VP 35

 

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17

 

 

 

 

 

 

 

 

 

 

 

 

 

TEL ATT 24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BATT

F901

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ILLUMI

 

 

 

 

 

18

 

 

 

 

 

 

 

AU +8V

+5V REG

 

 

 

 

 

 

 

 

 

 

16

 

 

 

 

 

 

 

 

 

ILL IN 69

 

CHECK

 

 

 

 

 

 

 

 

 

• Signal path

 

 

Q501

TU+5V

 

 

 

 

 

 

 

 

BATT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q907

 

 

 

 

 

13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

: FM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ILL

 

 

 

 

: AM/MW

 

 

 

 

 

 

 

ACC IN

68

 

ACC DET

 

 

 

 

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ACC

 

 

 

 

: CD

 

 

 

 

 

 

 

 

TEST IN 63

 

Q102

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEST

 

R-ch is omitted due to same as L-ch.

22 22

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Image 22
Sony CDX-M800 service manual Block Diagram Tuner Section, 21 a

CDX-M800 specifications

The Sony CDX-M800 is a standout model in the world of car audio systems, renowned for its combination of high-quality audio performance and user-friendly features. As a part of Sony's lineup, this CD receiver integrates both cutting-edge technology and classic functionalities, ensuring an enhanced listening experience during commutes or long road trips.

One of the key features of the Sony CDX-M800 is its advanced playback capabilities. The device can play a variety of formats including CDs, CD-Rs, and CD-RWs, as well as MP3 and WMA files. This versatility allows users to enjoy their favorite music without compatibility concerns. Additionally, the ability to play MP3 files means that users can store numerous songs on a single disc, reducing clutter and making it easier to switch playlists on the go.

The CDX-M800 features a sleek, user-friendly interface, complete with an LCD display that shows track information, radio stations, and playback modes. This display is designed for clarity, making it easy for users to navigate their audio options without distraction from the road. The rotary volume control and intuitive button layout enhance usability, allowing for quick adjustments while keeping attention on driving.

In terms of sound quality, the Sony CDX-M800 is equipped with a built-in equalizer, enabling users to customize the audio output to suit their preferences. With multiple preset sound modes and a 3-band equalizer, it enhances the clarity and richness of your music. The unit also supports Dynamic Reality Amp technology, which delivers powerful, distortion-free sound, contributing to an immersive listening experience.

Moreover, the CDX-M800 supports FM/AM radio with strong reception capabilities. The device can store up to 18 FM and 12 AM stations, allowing users to easily access their favorite radio shows without having to manually tune in repeatedly.

Connectivity is another essential feature of the Sony CDX-M800. The system is designed with a front-panel auxiliary input, which facilitates connection with external devices such as smartphones and MP3 players. This feature expands the listening options, allowing users to play their personal playlists directly through the vehicle’s sound system.

In summary, the Sony CDX-M800 is a well-rounded car audio solution, offering a blend of versatility, sound quality, and user-friendly features. Whether you're a casual listener or an audiophile, this CD receiver caters to a wide range of audio needs, making it a solid choice for enhancing your in-car entertainment experience.