Pin No.

 

Pin Name

I/O

 

Description

 

 

 

 

 

 

 

 

 

47

 

UNIREQ

O

Data request signal output terminal (for SONY bus)

“H”: request on Not used (open)

48

 

UNICKIO

I/O

Serial clock signal input from the master controller (IC501) or serial clock signal output to the

 

SONY bus interface (IC701) and master controller (IC501) (for SONY bus)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49

 

 

UNISI

I

Serial data input from the SONY bus interface (IC701)

 

 

 

 

 

 

 

 

 

50

 

 

UNISO

O

Serial data output to the SONY bus interface (IC701)

 

 

 

 

 

 

 

 

51

 

MD-CKO

O

Serial data transfer clock signal output to the CXD2652AR (IC301) and CXA2523AR (IC302)

 

 

 

 

 

 

 

 

52

 

 

MD-SI

I

Reading serial data signal input from the CXD2652AR (IC301)

 

 

 

 

 

 

 

 

 

 

 

53

 

 

NCO

O

Not used (open)

 

 

 

54

 

 

SENS

I

Internal status (SENSE) input from the CXD2652AR (IC301)

 

55

 

CC-XINT

I

Interrupt status input from the CXD2652AR (IC301)

 

 

 

 

 

 

 

 

 

 

 

 

56

 

LIMIT-IN

I

Detection input from the sled limit-in detect switch

 

 

 

The optical pick-up is inner position when “L”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

57

 

EJT-KEY

I

Eject request signal input terminal

“L”: eject on

Not used (fixed at “H”)

 

 

 

 

 

 

 

 

58

 

ERROR-PWM

O

PWM error monitor output terminal (C1and ATER is output when test mode)

Not used (open)

 

 

 

 

 

 

 

59

 

MD-RST

O

Reset signal output to the PCM1718E (IC101), CXD2652AR (IC301) and BH6511FS (IC303)

 

“L”: reset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

 

 

BU-IN

I

Battery detect signal input from the SONY bus interface (IC600) and battery check circuit

 

 

“H”: battery on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

61

 

BUS-ON

I

SONY bus on/off control signal input from the master controller (IC700) “L”: bus on

 

 

 

 

 

 

 

 

62

 

 

SQSY

I

Subcode Q sync (SCOR) input from the CXD2652AR (IC301)

 

 

 

“L” is input every 13.3 msec Almost all, “H” is input

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

63

 

 

C-SW

I

Inputs the disc loading start or disc eject completion detect switch detection signal

 

 

“L”: When start or eject completed of the disc loading operation

 

 

 

 

 

 

 

 

 

 

 

 

 

64

 

MD-LAT

O

Serial data latch pulse signal output to the CXD2652AR (IC301) and CXA2523AR (IC302)

65

 

MD-ON

O

Power supply on/off control signal output of the MD mechanism deck section main power supply

 

“H”: power on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66

 

DEEMP

O

Emphasis on/off control signal output to the PCM1718E (IC101) “H”: emphasis on

 

 

 

 

 

 

 

67

 

A-MUTE

O

Audio muting on/off control signal output terminal

 

 

 

 

 

 

 

 

 

 

 

68

 

 

NCO

O

Not used (open)

 

 

 

 

 

 

 

 

 

69

 

TSTCKO

O

Output of clock signal for the test mode display Not used (open)

 

 

 

 

 

 

 

 

70

 

 

TSTSO

O

Output of data for the test mode display Not used (open)

 

 

 

 

71

 

TSTMOD

I

Setting terminal for the test mode

“L”: test mode, “H”: normal mode

 

72

 

 

VCC

—

Power supply terminal (+5V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

73

 

 

NIL

I

Not used (fixed at “H”)

 

 

 

 

 

 

 

 

 

 

74 to 77

 

TOUT0 to TOUT3

O

Output of the 4⋅ 8 matrix test keys

Not used (open)

 

 

 

 

 

 

 

78 to 80

 

TIN0 to TIN2

I/O

Input of the 4⋅ 8 matrix test keys (“L” is always output, except in test mode)

Not used (open)

 

 

 

 

 

 

 

 

 

 

*1 Loading motor (M903) control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

 

 

IN

 

 

OUT

 

 

BRAKE

 

 

STOP

 

 

Terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD (pin 6)

 

“H”

 

“L”

 

“H”

 

“L”

 

EJECT (pin 7)

 

“L”

 

“H”

 

“H”

 

“L”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

45

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Sony MDX-C6500RX service manual Unireq, Unisi, Uniso, Ejt-Key, Bus-On, Tstso, Nil, OUT Brake Stop
Page 44 Page 46

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.
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