Sony MDX-C6500RX service manual Acc, Rstx, Dim Sel

Page 48

Pin No.

 

Pin Name

I/O

 

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

78

 

 

 

ILLIN

I

 

Auto dimmer control illumination line detection signal input terminal

 

 

 

 

“H” is input at dimmer detection

Not used (fixed at “L”)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

79

 

TELATT

I

 

Telephone detection signal input terminal

At input of “H”, the signal is attenuated by –20 dB

 

 

Used for the MDX-C6500R/C6500RX only (MDX-C6400R: fixed at “L”)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80

 

 

 

NCO

O

 

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

81

 

TEST IN

I

 

Setting terminal for the test mode

“L”: test mode, Normally: fixed at “H”

 

 

 

 

 

 

 

 

 

 

 

 

82

 

ACC IN

I

 

Accessory detection signal input terminal

“L”: accessory on

 

 

 

83

 

 

 

NCO

O

 

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

84

 

LOCKIN

I

 

Mini-disc lock detection signal input from the MD mechanism controller (IC501) “H”: lock

 

 

 

 

 

 

 

 

 

 

 

 

85

 

 

RCIN1

I

 

Rotary remote commander shift key input terminal

“L”: shift

 

86

 

 

 

HSTX

I

 

Hardware standby input terminal

“L”: hardware standby mode

Reset signal input in this set

 

 

 

 

 

 

 

 

 

 

87

 

 

 

MD2

I

 

Setting terminal for the CPU operational mode (fixed at “L” in this set)

 

 

 

 

 

 

 

 

 

 

88

 

 

 

MD1

I

 

Setting terminal for the CPU operational mode (fixed at “H” in this set)

89

 

 

 

MD0

I

 

Setting terminal for the CPU operational mode (fixed at “H” in this set)

 

 

 

 

 

 

 

 

 

 

 

90

 

 

 

RSTX

I

 

System reset signal input from the reset signal generator (IC652) and reset switch (SW503)

 

 

 

 

“L”: reset “L” is input for several 100 msec after power on, then it changes to “H”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

91

 

 

 

VSS

 

Ground terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

92

 

 

 

X0

I

 

Main system clock input terminal (3.68 MHz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

93

 

 

 

X1

O

 

Main system clock output terminal (3.68 MHz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

94

 

 

 

VCC

 

Power supply terminal (+5V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

95 to 97

 

 

 

NCO

O

 

Not used (open)

 

 

 

 

 

 

98

 

DIM SEL

I

 

Setting terminal for the dimmer

“L”: dimmer in, “H”: no dimmer (fixed at “H” in this set)

 

 

 

 

 

 

 

 

 

 

 

 

99

 

TAP CD

I

 

Setting terminal for the internal mechanism tape or CD

 

 

 

“L”: CD, “H”: tape (fixed at “L” in this set)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100, 101

 

 

 

NCO

O

 

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

102

 

AMTL IN

I

 

Auto metal detection signal input terminal “L”: auto metal Not used (open)

 

 

 

 

 

 

 

 

 

 

 

103

 

AMS IN

I

 

Input terminal of whether a music is present or not is detected at auto music sensor

 

 

 

 

“L”: music is present, “H”: music is not present

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

104

 

 

 

REEL

I

 

Rotation detect signal input terminal Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

105

 

 

 

POS0

I

 

 

 

 

 

 

 

 

 

 

 

 

Tape position (EJECT/FF/REW/REV/

 

POS0: “L”: EJECT mode, “H”: others mode

 

 

 

 

 

 

 

 

 

106

 

 

 

POS1

I

 

 

 

 

FWD mode) detect input from the tape

 

POS1: “L”: FF and FWD mode, “H”: others mode

107

 

 

 

POS2

I

 

operation switch on the deck mechanism

 

POS2: “L”: REW mode, “H”: others mode

 

 

 

 

 

 

 

 

Not used this function (open)

 

 

POS3: “L”: REV and EJECT mode, “H”: others mode

108

 

 

 

POS3

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

109

 

 

 

LM EJ

O

 

Loading motor control signal output terminal

“H” active

 

 

 

 

 

(For the eject direction and reverse side operation)

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

110

 

LM LD

O

 

Loading motor control signal output terminal

“H” active

 

 

 

(For the loading direction and forward side operation) Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

111

 

CM ON

O

 

Capstan/reel motor control signal output terminal

“H”: motor on

Not used (open)

112

 

TAPON

O

 

Tape system power supply on/off control signal output terminal “H”: tape on Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

113

 

N ROUT

O

 

Forward/reverse direction control signal output terminal

 

 

 

“L”: forward direction, “H”: reverse direction

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

114

 

AMSON

O

 

Tape auto music sensor control signal output terminal

 

 

 

“L” is output to lower the gain for audio level at FF/REW mode

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

METAL control in/out terminal

 

 

 

 

 

 

115

 

MTLON

I/O

 

At initial mode: auto/manual mode selection input of METAL function (manual at “L” input)

 

 

At manual mode: METAL on/off control signal output terminal (METAL on at “H” output)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Not used this function (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

48

Image 48
Contents Specifications NEWTable of Contents General Electrical AdjustmentsDiagrams DisassemblySection General Location of controlsPage Page Page Page Page Section Disassembly SUB Panel ASS’YMechanism Deck MG-164NZ-138 Servo Board Main BoardMD Cover ASS’Y Heat SinkFloat Block LO Motor ASS’Y Loading M903Lever LE ASS’Y Holder ASS’YChucking ARM ASS’Y Optical PICK-UP KMS-241C/J1NPSL Motor ASS’Y Sled M902, SP Motor ASS’Y Spindle M901 Section Electrical Adjustments MD SectionTuner Section Section Diagrams Signal PathMD Play Block Diagram Tuner Section MW/LW BUS AudioBlock Diagram BUS CONTROL/POWER Supply Section Circuit Boards Location Semiconductor Location Ref. No Location IC307 Q402 Q403 MDX-C6400R/C6500R/C6500RX MDX-C6400R/C6500R/C6500RX Semiconductor Location RL+ FL+ FR+ RR+ ATT 13 5 Remamp REM ACC MDX-C6400R/C6500R/C6500RX Schematic Diagram Main Board 2/3 See page 31 for Waveforms MDX-C6400R/C6500R/C6500RX Main Board MDX-C6400R/C6500R/C6500RX Schematic Diagram SUB Board Ref. No Location D901 D902 D903 D904 D951 D952 IC901 Schematic Diagram KEY Board See page 31 for Waveform CXA2523AR IC305 BA6287F Main Board IC51 SAA6588T/V2-118 TDA7402TR IC PIN Function Description Mvci AsyoAsyi AvddFrdr FS4Srdr SfdrXstby VrefVCC WbladjReset EjectDfctsel DpllselUnireq UnisiUniso EJT-KEYBuson IllonE2P SIO E2P CKOAvrh AvrlKEYIN1 RCIN0ACC RstxDIM SEL PW on Section Exploded Views General SectionTU1 Front Panel Section 54 3-041-003-01 Button LIST/ENTER DSPL. LIST. Enter60 1-694-660-11 Conductive BOARD, Connection Mechanism Deck MG-164NZ-138 155 152 A-3326-034-A Sensor BOARD, CompleteSection Electrical Parts List KEYAmber ResistorMetal Chip RES, ChipKEY Main CN701 1-580-907-31 PLUG, Connector BUS Control MylarDouble Layer RD6.8ESB2TDA7402TR Jack Remote Resistor JC1Short JC2 Short JC4Carbon Main Sensor Servo Ferrite Bead Ferrite Bead Inductor ChipCXD2652AR CXA2523ARServo SUB Parts for Installation and Connection Ver 1.1Revision History

MDX-C6500R, MDX-C6500RX specifications

The Sony MDX-C6500R and MDX-C6500RX are distinguished models in the realm of automotive audio systems, known for their innovative features and superior sound quality. Designed to enhance the driving experience, these units combine functionality with state-of-the-art technology, making them popular choices among car audio enthusiasts.

One of the standout features of the MDX-C6500R and MDX-C6500RX is their impressive sound output. Both models are equipped with a high-quality amplifier that delivers clear and powerful audio performance. The incorporation of advanced equalization options allows users to fine-tune the sound to their specific preferences, ensuring an optimal listening experience no matter the genre of music.

The connectivity options are another highlight of these models. The MDX-C6500R and MDX-C6500RX come with built-in CD players, enabling users to enjoy their favorite albums while on the road. Additionally, these units support a variety of audio formats, ensuring compatibility with a wide range of media. For those who prefer digital music, the inclusion of USB ports and auxiliary inputs allows for seamless integration of smartphones and other devices, making it easy to access personal playlists or streaming services.

User interface and functionality have not been overlooked in these models. Both the MDX-C6500R and MDX-C6500RX feature an intuitive control panel with a clear display, allowing for easy navigation through tracks and settings. The rotary volume control provides a tactile experience that enhances usability, while preset functions enable users to save their favorite stations for one-touch access.

In terms of design, both models boast a sleek and modern aesthetic that fits well with the interior of various vehicle types. They are built to withstand the rigors of daily use while maintaining a refined look, making them suitable for both casual listeners and audiophiles alike.

Moreover, these models prioritize safety and convenience. They are designed with features that minimize distractions, ensuring drivers can focus on the road while still enjoying high-quality audio. Some models may also include compatibility with steering wheel controls, further enhancing the user experience.

In summation, the Sony MDX-C6500R and MDX-C6500RX stand out as reliable and feature-rich car audio solutions. With high-quality sound performance, extensive connectivity options, and user-friendly controls, they are ideal for anyone looking to elevate their in-car audio experience. As drivers continue to seek better sound systems, these Sony models remain relevant and desirable choices.