TV/STB RS-232 Monitor Requirements / RS-232 Troubleshooting

RS-232 Communication Requirments

RS-232 Pin Configuration Wiring Diagram

of the TV/STB Display Control Connector

Type of Connector; D-Sub 9-Pin Female

No.

Pin Name

 

1

No Connection

5

2

TXD (Transmit data)

2

3

RXD (Receive data)

1

4

No Connection

 

5

GND

 

6

No Connection

3

7

No Connection

4

8

No Connection

 

9

No Connection

 

Monitors listed below require RS-232 Null Modem DB9 Cable with male connectors at each end. Depending on the type of Null modem cable, one or two gender changers may be required.

RS-232C Null Configuration

3-Wire Configuration

(Serial male-male NULL modem cable)

 

 

 

 

TV/STB

 

 

 

Monitor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Monitors:

NC

1

 

 

 

1

 

NC

TXD

 

2

 

 

 

 

 

2

 

TXD

M3200C

RXD

 

3

 

 

 

 

 

3

 

RXD

M3700C

 

 

 

 

 

 

 

M4200C

NC

 

4

 

 

 

 

 

4

 

 

NC

 

 

 

 

 

 

 

 

M4600C

GND

 

5

 

 

 

 

 

5

 

GND

M3201C

NC

 

6

 

 

Null-Modem

 

 

6

 

 

NC

M3701C

NC

 

7

 

 

Cable

 

 

7

 

 

NC

M4201C

NC

 

8

 

 

 

 

 

8

 

 

NC

M4210C

 

 

 

 

 

 

 

 

 

NC

 

9

 

 

 

 

 

9

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

D-Sub 9-pin

 

D-Sub 9-pin

 

 

 

 

 

Male

 

 

 

Male

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Monitors listed below require RS-232 straight-through (extension) DB9 cable with male connector on one end and female connector on the other end.

Refer to monitor installation guide for more specifics.

RS-232C Straight Configuration

3-Wire Configuration

(Straight-through male-female cable)

 

 

 

TV/STB

 

 

 

 

 

Monitor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Monitors:

NC

 

1

 

 

 

 

 

1

 

NC

TXD

 

2

 

 

 

 

 

 

 

2

 

RXD

 

20LS7DC

 

 

 

 

 

 

 

 

 

 

RXD

 

3

 

 

 

 

 

 

 

 

3

 

TXD

 

26LC7DC

 

 

 

 

 

 

 

 

 

 

 

23LS7DC

NC

 

4

 

 

 

 

 

 

 

4

 

GND

 

 

 

 

 

 

 

 

 

 

 

32LC7DC

 

 

 

 

 

 

 

 

 

 

GND

 

5

 

 

 

 

 

 

 

5

 

 

NC

 

37LC7D

NC

 

6

 

 

Straight-Through

 

 

6

 

 

NC

 

42LC7D

NC

 

7

 

 

 

or Extension

 

 

7

 

 

NC

 

47LC7DF

NC

 

8

 

 

 

Cable

 

 

8

 

 

NC

 

32LC2DC

 

 

 

 

 

 

 

 

 

 

 

37LC2DC

NC

 

9

 

 

 

 

 

 

 

9

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

50PC5DC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50PM1M

 

D-Sub 9-pin

 

 

 

D-Sub 9-pin

 

 

 

 

 

 

 

 

MU-60PZ95V

 

 

 

 

Male

 

 

 

 

Female

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

71PY1M

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RS-232 Troubleshooting

Improper RS-232 Communications Setup

-Selects Incorrect Source at Power Up

TV/STB powers On TV. Flashes selected HDMI/DVI source but selects incorrect Aux source.

-Check settings for Installer menu items 108, 109, 110 and 113.

-Displays ‘No Signal’ message at Power Off

TV/STB does not power Off TV and displays ‘No Signal’ message.

-Check settings for Installer menu items 108, 109, 110 and 113.

P A G E 6 4

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Zenith HCS5610 warranty TV/STB RS-232 Monitor Requirements / RS-232 Troubleshooting, Type of Connector D-Sub 9-Pin Female