DHC-MD555 (serv.man2) - Sony Audio Service Manual (repair manual). Page 10

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The link cable consists of the following terminals. (Refer to Fig. 2-2.)

Table 2-1. Function of Terminals

The link cable terminals consist of the music data terminals and remote control data terminals. The remote control key pressed is detected

by the changes in the voltage of the REMOTE terminal. The remote control display data is also transmitted by the serial data of the DATA
terminal.

Right channel audio terminal.
Left channel audio terminal.
Grounding terminal for remote control. (A. GND)
Grounding terminal. (D. GND)
Remote control key detection terminal.
When a remote control key is pressed, the voltage corresponding to the key will drop.
Input/output terminal of the serial data for liquid crystal control.
Power supply of the liquid crystal remote control. Approx. 3V.

I/O indicates the input/output of the MD Walkman.

No

I/O

Terminal Name

Function

1
2
3
4

5

6
7

O
O

–
–

I

I/O

O

R
L
1/2 VDD
GND

REMOTE

DATA
R-VCC