Sony CDX-M800 service manual Cd Rst

Page 19

CDX-M800

Pin No.

Pin Name

I/O

Pin Description

 

 

 

 

51

DST SEL2

I

Destination select signal input

 

 

 

 

52

CD LM LO

O

CD loading motor control signal output

 

 

 

 

53

CD LM EJ

O

CD eject motor control signal output

 

 

 

 

54

CD RST

O

CD servo reset signal output

 

 

 

 

55

CD AO

O

CD servo command/parameter discri. output

 

 

 

 

56

CD STB

O

CD servo data strobe signal output

 

 

 

 

57

CD TSTB

O

CD servo text strobe signal output

 

 

 

 

58

CD RFOK

I

CD servo RFOK signal input

 

 

 

 

59

CD XTALEN

O

CD servo crystal OSC control signal output

 

 

 

 

60

VCC2

—

Power supply pin (+5V)

 

 

 

 

61

RESET OUT

O

Display CPU reset signal output

 

 

 

 

62

VSS

—

Ground

 

 

 

 

63

TEST IN

I

Test mode setting detect signal input

 

 

 

 

64

BUS ON

O

BUS ON control signal output

 

 

 

 

65

SYS RST

O

System reset signal output

 

 

 

 

66

BUS/AUX

O

BUS/AUX select control signal output

 

 

 

 

67

LINK OFF

O

Link OFF control signal output

 

 

 

 

68

ACC IN

I

Accessory key ON detect signal input

 

 

 

 

69

ILL IN

I

Ilumination line detect signal input

 

 

 

 

70

RC IN1

I

Rotary commander signal input 1

 

 

 

 

71

NCO

O

Not used. (Open)

 

 

 

 

72

CD SELF SW

I

CD self SW detect signal input

 

 

 

 

73

TU ATT IN

I

Tuner mute control signal input

 

 

 

 

74

CLOSE SW

I

Front panel close detect signal input

 

 

 

 

75

OPEN SW

I

Front panel open detect signal input

 

 

 

 

76

I-DET

I

Front panel current detect signal input

 

 

 

 

77

MOT–

O

Front panel open/close control signal output

 

 

 

 

78

MOT+

O

Front panel open/close control signal output

 

 

 

 

79

ROMC EN

I

ROM correction enable signal input

 

 

 

 

80

QUALITY

I

Tuner noise detect signal input

 

 

 

 

81

MPTH

I

Tuner multi-path signal input

 

 

 

 

82

VSM

I

S-meter signal input

 

 

 

 

83

SA IN

I

SA data input

 

 

 

 

84

KEY IN1

I

Key signal input 1

 

 

 

 

85

KEY IN0

I

Key signal input 0

 

 

 

 

86

RC IN0

I

Rotary commander signal input 0

 

 

 

 

87

KEY ACK2

I

Key acknowledge detect signal input 2

 

 

 

 

88

KEY ACK0

I

Key acknowledge detect signal input 0

 

 

 

 

89

KEY ACK1

I

Key acknowledge detect signal input 1

 

 

 

 

90

OPEN KEY

I

Open key detect signal input

 

 

 

 

91

RAM BU

I

RAM reset detect signal input

 

 

 

 

92

FLD ON

O

FL driver power supply ON/OFF signal output

 

 

 

 

93

FL ON

O

FL power supply ON/OFF signal

 

 

 

 

94

AVSS

—

Ground

 

 

 

 

95

DISP CE

O

Display CPU chip enable output

 

 

 

 

96

VREF

—

A/D converter reference voltage (+5V)

 

 

 

 

97

AVCC

—

Power supply pin (+5V)

 

 

 

 

98

DISP SI/RX

I

Display CPU BUS data input

 

 

 

 

99

DISP SO/TX

O

Display CPU BUS data output

 

 

 

 

100

DISP CKO

O

Display CPU BUS clock output

 

 

 

 

19

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Contents CDX-M800 SpecificationsUS, Canadian model Service NotesTest Discs AEP, UK, E modelExtension Cable and Service Position Diagrams Table of Contents GeneralDisassembly Phase AlignmentConnection example US, Canadian Model Section GeneralFront Connections US, Canadian ModelFront Panel Assy Section DisassemblySUB Panel CD SUB Assy CD Mechanism BLOCK, Front Panel AssyMain Board Motor Block ASSY, CAM R AssyHeat Sink Chassis T SUB Assy Servo Board Lever SECTION, in Self SW BoardFloating Block Assy Shaft Roller ASSY, Load SW BoardOptical PICK-UP Block ARM A-L ASSY, ARM B-L Assy Section Phase AlignmentCAM L Alignment Between ARM A-L Assy and ARM B-L Assy Motor BlockCAM R ARM A-R ASSY, ARM B-R AssyIC PIN Descriptions Section DiagramsCD RST IC2 M30833FJGP-066 Display System Control Display Board IC1 Block Diagram CD Section21 a Block Diagram Tuner SectionCLK Block Diagram Display SectionWaveform Display Board Circuit Boards LocationWaveforms Servo Board Waveforms Main BoardIC B/D CDX-M800 CDX-M800 Semiconductor Location Batt IC B/D Voltage is dc with respect to ground under no-signal C535 C536 C537 D507 D511 R534 CN501 IC2 IC1Refer to page 24 for Waveform IC1 µPD63711GC-8EU Servo Board IC Block DiagramsIC503 RRX9000-0601 SUB Board IC62 RRX9000-0601 Display Board IC401 TDA7416 Main Board 1/2 Spring FLEXIBLE, Tension Section Exploded ViewsChassis Section Sheet SUB PANEL, ElectrostaticScrew +P 60 A-3326-298-A Switch BOARD, CompleteCAM Section Stop Ring 1.5, Type -ETuner Unit TUX-030 Main Board SectionLCD2 Front Panel Section211 A-3283-233-A Servo BOARD, Complete 211 217M903 A-3315-039-A Motor SUB ASSY, LO Loading 262 263 255253 261 259 252 CD Mechanism MG-393XC-121//K 254 251 256 257 258 260 264259 A-3307-422-A Chassis M Complete Assy 304 CD Mechanism MG-393XC-121//K 301307 302 308 303 309 310 305 306Section Electrical Parts ListDisplay SWITCH, Tactile with LED Image SwitchSWITCH, Tactile with LED Source SWITCH, Tactile with LED CloseDisplay Self SW Load SW Main Elect Chip PIN, Connector 16PPLUG, Connector BUS Control CONNECTOR, Board to Board 30PAudio OUT REAR/FRONT COIL, PowerCOIL, Choke InductorTRANSFORMER, DC-DC Converter TransformerServo SL SW SUB 351 352 353 354 355 356 357 358 SUB SwitchRevision History
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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.
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