Runco V50hd V63hd Dislay User Manual

Maintenance and Troubleshooting
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5.1 
Troubleshooting TipsTable 5-1 provides some general guidelines for troubleshooting problems you may 
encounter with the V-50HD/V-63HD. If the suggested solutions fail to resolve the problem 
or if you encounter an issue not described here, please contact Runco Technical Support. 
5. Maintenance and Troubleshooting
Table 5-1. Troubleshooting Chart
Symptom Possible Cause(s)Solution
The...

Maintenance and Troubleshooting
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The display is jittery or 
unstable. Poor-quality or improperly 
connected source. 
 The horizontal or vertical 
scan frequency of the 
input signal may be out of 
range for the display.  Ensure that the source is 
properly connected and of 
adequate quality for 
detection. 
 Correct at the source. 
Image is too bright and/or 
lacks definition in the bright 
areas of the image.  Contrast is...

External Control
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In addition to using the DHD Controller remote control unit, there are three methods of 
controlling the V-50HD/V-63HD and DHD Controller externally: 
 Using a serial (RS-232) link to send ASCII commands and receive responses to those 
commands.
 Using discrete infrared (IR) codes to program a third-party remote control unit.
 Using an HDMI connection to send Consumer Electronics Control (CEC) commands...

External Control
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Table 6-1 lists the RS-232 command set. The “Parameter (min/max)” column shows the 
valid parameter ranges, or “NA” for commands that take no parameters. 
When you enter a valid command, the DHD Controller executes it and acknowledges it 
with a plus sign on the command line (+ >). When you enter an invalid command – one 
that is misspelled or followed by values outside the valid range for that command – the...

External Control
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Aspect Ratio Commands
16:9 NA YES Selects the 16:9 aspect ratio
4:3 NA YES Selects the 4:3 aspect ratio
ASPECT? NA NA Returns current aspect ratio
CINEMA NA YES Selects the Cinema aspect ratio
LETTERBOX NA YES Selects the Letterbox aspect ratio
NATIVE NA YES Selects the Native aspect ratio
VIRTUALWIDE NA YES Selects the VirtualWide aspect ratio
VIRTUALCINEMA NA YES Selects the Virtual Cinema aspect ratio...

External Control
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Image Preset Commands
CUSTOM1 NA YES Loads “Custom 1” image preset
CUSTOM2 NA YES Loads “Custom 2” image preset
DAY NA YES Loads “ISF Day” image preset
NIGHT NA YES Loads “ISF Night” image preset
PRESET? NA NA Returns currently-selected preset
(ISF Day, ISF Night, Custom 1 or Cus-
tom 2)
Input Position Commands
IHEIGHT 0/20 YES Sets the value for input height
IHEIGHT? NA NA Returns input height value
IHPOS...

External Control
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Sleep Timer Commands
SLEEPTMR? NA NA Returns sleep timer setting
STOFF NA YES Sets the sleep timer to Off
ST30MIN NA YES Sets the sleep timer to 30 minutes
ST60MIN NA YES Sets the sleep timer to 60 minutes
ST90MIN NA YES Sets the sleep timer to 90 minutes
ST2HRS NA YES Sets the sleep timer to 2 hours
ST4HRS NA YES Sets the sleep timer to 4 hours
Screen Commands
SCREEN? NANAReturns the screen setting
SCREEN1...

External Control
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6.2 
Using Discrete IR 
CodesThe DHD Controller accepts commands in the form of IR signals that conform to the 
Phillips RC5 protocol. Each DHD Controller remote control button has an RC5 control 
code associated with it. 
You can use these codes to program a third-party, “universal” remote control unit to work 
with the DHD Controller. These third-party products usually come with a computer 
software...

External Control
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For example, here is the RC5 control code for the ON button on the DHD Controller 
remote control unit (assuming the default address is used):  
Figure 6-1 shows the pulse train for this command (with the toggle bit set to zero). 
Figure 6-1. RC5 Message Format
With Toggle Bit = 0
Hex 3 4 4 1
Binary11 0 10001000001
With Toggle Bit = 1
Hex 3 C 4 1
Binary11 1 10001000001
FunctionStart 
BitsToggle...

External Control
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IR Command ListTable 6-2 lists the RC5 control codes for the DHD Controller. ➤
Table 6-2. RC5 Control Codes for the DHD Controller
Remote Control 
Button NameRC5 Data 
from 
Remote 
Control 
(Note)RC5 Data 
with Toggle 
Bit = 1 
(Note)Description
16:9 0x3449 0x3C49 16:9 aspect ratio
4:3 0x344A 0x3C4A 4:3 aspect ratio
CINEMA 0x346C 0x3C6C Cinema aspect ratio
COMP 0x344E 0x3C4E Component video input
CUST 1...