JVC TM-H1950CG - Manual (Page 14)

TM-H1950CG 1-14
No.51961
ENGLISH
Problems
No power supply.
No picture with the
power on.
No sound.
Shaking picture.
No colors, wrong
color, or dark picture.
Unnatural, irregularly
colored, or distorted
picture.
Dark stripes appear
at the top and bottom
of the screen, picture
vertically squeezed.
The overall picture
size is too small.
Function buttons on
the front panel do not
function.
The INPUT SELECT
buttons do not
function.
Points to be checked
Is the power plug loosened or disconnected?
Is the main power turned OFF?
Is the video signal output from the connected
component?
Is the input signal selected properly?
Is the video cable disconnected?
Is the audio signal output from the connected
component?
Is the volume output set to minimum?
Is the audio cable disconnected?
Is the monitor close to a device generating a
strong magnetic field?
Is the color system selected properly?
Has the picture control setting (CONTRAST,
BRIGHT, CHROMA or PHASE) been changed?
Is the monitor close to a speaker, magnet or any
other device generating a strong magnetic field?
Is the aspect ratio set to 16:9?
Has the UNDER SCAN button been pressed so
the UNDER SCAN button lights?
Has control of the buttons been locked? (Has
the CONTROL LOCK function been set to ON?)
Is input selection under external control? (Has
the REMOTE ENABLE function been set to
valid?)
Measures (Remedy)
Firmly insert the power plug.
Turn the main power ON. (See page 6.)
Set the connected component correctly.
Select the required video signal input with the
Input select button. (See page 10.)
Connect the video signal cable firmly.
(See pages 16 and 17.)
Set the connected component correctly.
Adjust the speaker volume with the VOLUME/
SELECT button. (See page 10.)
Connect the audio signal cable firmly.
(See pags 16 and 17.)
Move the device away from the monitor until the
picture stabilizes.
Set COLOR SYSTEM in the <MENU> screen to
AUTO. (See page 12.)
Set each picture control to the standard setting.
(See page 9.)
Press the COLOR OFF button and BLUE CHECK
button to adjust. (See page 11.)
Move the device away from the monitor and turn
the monitor’s power off. Wait at least 30 minutes,
then turn the power on again.
Switch the aspect ratio to 4:3 with the ASPECT
button on the front panel.
Press the UNDER SCAN button to turn off the
button. (See page 4.)
Set CONTROL LOCK in the <SET-UP MENU>
screen to OFF. (See pages 13 and 14.)
Set REMOTE ENABLE to OFF (invalid).
(See page 18.)
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.
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 the
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.
19 18
HOW TO USE EXTERNAL
CONTROL
Ⅵ 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.
* 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 time.)
* 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 INPUT-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.
The Names and Functions of Terminals
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
5 INPUT D Changes the input to INPUT D Not change Change * 3 * 6
6 not used – – – * 4
7 not used – – – * 4
8 COLOR OFF Changes the picture black-and-white. Not change Change
9 not used – – – * 4
10 ASPECT Changes the screen ratio to 16:9 4:3 16:9
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 – –
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.
1
2
3
10
8
9
6
7
11
12
13
14
15
4
5