JVC TM-H1950CG HOW to USE External Control, Troubleshooting,
about External Control

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HOW TO USE EXTERNAL CONTROL

ABOUT EXTERNAL CONTROL

This monitor is provided with an external control terminal. MAKE (make contact) or TRIG. (trigger) system can be selected by

the setting of REMOTE SYSTEM	in the <SET-UP MENU>.
MAKE (make contact system) : The functino is controlled by short-circuiting or disconnecting each control terminal with pin 15
	(GND).
TRG. (trigger system)	: The function is controlled by short-circuiting with pulses (for about 1 second) (short-circuit/open
	with the 15th pin GND).

*The 14th pin (REMOTE ENABLE) is controlled with MAKE even though TRG. is selected.

*The 1st pin (TALLY) is always controlled by the make contact system regardless of the setting (ON/OFF) of the 14th pin (REMOTE ENABLE) or the REMOTE SYSTEM setting (MAKE, TRG.) in <SET-UP MENU>.

Note:

●When this monitor is externally controlled, the following buttons are disabled. MAKE: INPUT-A to D, UNDER SCAN, COLOR OFF, ASPECT on the front panel.

Connections

Connect (short-circuit) the 15th terminal (GND) to each of the 1st through 14th terminals in the 3-lines 15-pins D-sub connector. The functions of each terminal are listed below.

The Names and Functions of Terminals

10	9
15	5
14	4	8

137

122 6

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TROUBLESHOOTING

Solutions to common problems related to your monitor are described here. If none of the solutions presented here solves the problem, unplug the monitor and consult a JVC-authorized dealer or service center for assistance.

Problems	Points to be checked	Measures (Remedy)
No power supply.	Is the power plug loosened or disconnected?	Firmly insert the power plug.
	Is the main power turned OFF?	Turn the main power ON. (See page 6.)
No picture with the	Is the video signal output from the connected	Set the connected component correctly.
power on.	component?
	Is the input signal selected properly?	Select the required video signal input with the
		Input select button. (See page 10.)
	Is the video cable disconnected?	Connect the video signal cable firmly.
		(See pages 16 and 17.)
No sound.	Is the audio signal output from the connected	Set the connected component correctly.
	component?
	Is the volume output set to minimum?	Adjust the speaker volume with the VOLUME/
		SELECT button. (See page 10.)
	Is the audio cable disconnected?	Connect the audio signal cable firmly.
		(See pags 16 and 17.)
Shaking picture.	Is the monitor close to a device generating a	Move the device away from the monitor until the
	strong magnetic field?	picture stabilizes.

TM-H1950CG

No.

Names

Functions

Operations (OFF

p[ ON)

* 1

1

TALLY

Puts on the tally lamp.

Put off

Put on

2

INPUT A

Changes the input to INPUT A

Not change

Change

*2

*6

3

INPUT B

Changes the input to INPUT B

Not change

Change

*3

*6

4

INPUT C

Changes the input to INPUT C

Not change

Change

*3

*6

No.

5

INPUT D

Changes the input to INPUT D

Not change

Change

*3

*6

6

not used

–

–

–

*4

51961

7

not used

–

–

–

*4

10

ASPECT

Changes the screen ratio to 16:9

4:3

16:9

8

COLOR OFF

Changes the picture black-and-white.

Not change

Change

9

not used

–

–

–

*4

11

UNDER SCAN

Makes the screen under-scan

Over-scan

Under-scan

12

not used

–

–

–

*4

13

not used

–

–

–

*4

14

REMOTE ENABLE

Makes the external control from the

Invalid

Valid

*5

REMOTE terminal valid or invalid

15

GND

Used as a ground terminal

–

–

*1 : OFF stands for disconnection, and ON stands for short-circuit.

*2 : When INPUT REMOTE in the <SET-UP MENU> is set to A/B, OFF means “select INPUT A” and ON means “select INPUT B”.

*3 : When INPUT REMOTE in the set-up menu is set to A/B, pins not used should not be connected.

*4 : Do not connect.

*5 : Setting REMOTE ENABLE to ON enables external control from each terminal. (Only TALLY can be externally controlled all the tim

e.)

*6 : INPUT REMOTE setting in the set-up menu (REMOTE SYSTEM shown only when MAKE is selected.)

For the D-sub pins 2, 3, 4 and 5, 4-pin or 1-pin control can be set with INPUT REMOTE in the set-up menu.
• 4-pin control: Switches input by short-circuiting a specified signal line in INPUT A to D.
• 1-pin control: Switches between INPUT-A and INPUT-B only with the 2nd pin of the D-sub connector. In this case, INPUT-C and IN	PUT-D
cannot be selected.
OFF: INPUT A
ON : INPUT B

NOTES :

*When more than two terminals are selected (short-circuited) from INPUT A through INPUT D under the MAKE system, the signal input is prioritized alphabetically (A, B, C, D).

*To control INPUT A through INPUT D under the MAKE system, we recommend using the interlock switch, which turns off a switch when another switch is turned on.

To control INPUT A through INPUT D under the TRG. system, we recommend using the return switch, which stays ON while pressed.

No colors, wrong	Is the color system selected properly?	Set COLOR SYSTEM in the <MENU> screen to
color, or dark picture.		AUTO. (See page 12.)
	Has the picture control setting (CONTRAST,	Set each picture control to the standard setting.
	BRIGHT, CHROMA or PHASE) been changed?	(See page 9.)
		Press the COLOR OFF button and BLUE CHECK
		button to adjust. (See page 11.)
Unnatural, irregularly	Is the monitor close to a speaker, magnet or any	Move the device away from the monitor and turn
colored, or distorted	other device generating a strong magnetic field?	the monitor’s power off. Wait at least 30 minutes,
picture.		then turn the power on again.
Dark stripes appear	Is the aspect ratio set to 16:9?	Switch the aspect ratio to 4:3 with the ASPECT
at the top and bottom		button on the front panel.
of the screen, picture
vertically squeezed.
The overall picture	Has the UNDER SCAN button been pressed so	Press the UNDER SCAN button to turn off the
size is too small.	the UNDER SCAN button lights?	button. (See page 4.)
Function buttons on	Has control of the buttons been locked? (Has	Set CONTROL LOCK in the <SET-UP MENU>
the front panel do not	the CONTROL LOCK function been set to ON?)	screen to OFF. (See pages 13 and 14.)
function.
The INPUT SELECT
	Is input selection under external control? (Has	Set REMOTE ENABLE to OFF (invalid).
buttons do not
	the REMOTE ENABLE function been set to	(See page 18.)
function.
	valid?)

The following are not malfunctions:

● When a bright still image (such as a white cloth) is displayed for a long period, it may appear to be colored. This is due to t	he
structure of the cathode ray tube and will be deleted when another image is displayed.
● You experience a mild electric shock when you touch the picture tube. This phenomenon is due to a normal buildup of static
electricity on the CRT and is not harmful.
● The monitor emits a strange sound when the room temperature changes suddenly. This is only a problem if an abnormality
appears on the screen as well.
● If two or more monitors are operated next to each other, their images may shake or be distorted. This phenomenon is due to
mutual interference; it is not a malfunction. Move the monitors away from each other until the interference disappears or turn
the power off on any monitor that is not being used.

ENGLISH

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