Runco Cl 420 Projector User Manual

							Operation
Runco CL-420 Owner’s Operating Manual 41 
• Auto Tune: Auto Tune automatically adjusts settings to optimize computer images. 
Auto Tune can be executed either on command or automatically whenever an 
incoming RGB signal is present. To execute Auto Tune on command, select Execute 
Auto Tune and press ENTER. To enable automatic Auto Tune, select Auto Tune and 
set it to ON. 
Image Position: To adjust the horizontal and vertical position of the projected image, 
select Image Position from the Image Option menu and press ENTER. 
• H Position: Use the up- or down-arrow buttons ( ,  ) to select H Position. Then, 
use the right-arrow button (  ) to shift the image to the right; use the left-arrow button 
(  ) to shift the image to the left. 
•V Position: Use the up- or down-arrow buttons ( ,  ) to select V Position. Then, 
use the right-arrow button (  ) to shift the image up; use the left-arrow button (  ) to 
shift the image down.
To restore the default image position, select Reset and press ENTER. Then, press 
ENTER to confirm or EXIT to cancel. 
Over Scan Adjust: Overscan pushes the outside edge of the active picture area of the 
video signal out beyond the edge of the display area. 
Some television programs are produced based on the assumption that older television 
sets may not display the outer edges of the broadcast picture area. Over scan effectively 
trims away these inactive, outer edges and enlarges the remaining portion of the image to 
fill the display area.
Select from 0% to 10% of Overscan, as desired.
For HDTV, DVDs and other video sources, Overscan is generally not necessary or 
desirable.
SDTV Adjust: To maximize the quality of 480i (composite, S-Video or component) video 
signals, select SDTV Adjust from the Image Option menu and press ENTER. 
• Chroma Enhance: Use Chroma Enhance to add chroma (color information) to the 
input signal, making colors appear more vibrant and saturated. 
• Video On Film: Set Video On Film to ON to repair distortions or abnormalities in a 
video image. 
• Film Mode: Use the Film Mode control to smooth out moving images from interlaced 
sources. In most cases, the CL-420 detects the proper “pull-down” rate and vertical 
frequency. However, if your source is jittery and/or tearing you may wish to force a 
setting to ensure stable processing for that source. 
Brightness Enhance: to amplify the bright areas of the image, select Brightness 
Enhance and use the right- or left-arrow button ( 
 or  ) to set it to ON. Brightness 
Enhance can be useful for high ambient light environments or when you use the lower 
Lamp Power setting (see below). 
Lamp Power: Select Lamp Power from the Display Color Menu to adjust the lamp output 
level. You can choose to run the lamp as bright as possible (250W; this is the default 
setting) or you can choose the lower setting (200W). Generally, lower lamp output can 
prolong the life of the lamp, but decreases brightness. 
Auto Tune may take some time to complete, depending on the 
characteristics of the incoming signal. Note 
						

							Operation
42 Runco CL-420 Owner’s Operating Manual
Information: Select Information from the Main Menu to see information about the current 
source, input resolution, horizontal and vertical frequencies, lamp hours and the installed 
firmware version. 
Should you ever need to contact Runco Technical Support, this information will help them 
answer your questions or resolve product performance issues. 
Restore Factory Settings: To reset all items in the Image Options menu to their factory 
default values, select Restore Factory Settings and press ENTER. A warning message 
appears; press ENTER again to confirm the reset or press EXIT to cancel. After the reset, 
the projector powers off and restarts.
Installation The Installation menu to change the picture orientation, appearance and behavior of the 
OSD menus, fan speed and other projector settings. 
Language: Select Language from the Installation menu and press the right- or left-arrow 
buttons to select the OSD language (English, French, Italian, German or Spanish).
Picture Configuration: Select Picture Configuration from the Installation menu to 
change the picture orientation to suit the method of installation (Floor Front, Floor Rear, 
Ceiling Front or Ceiling Rear). 
OSD Timeout: The OSD Timeout setting controls how long the OSD menus stay on 
screen when no buttons are pressed. Select a time-out period of 5, 15 or 60 seconds. 
OSD Transparent: To allow the projected image to show through the OSD menus, 
select OSD Transparent from the Installation menu and set it to ON.
Source Detect: The CL-420 can automatically detect an incoming signal and switch to 
that input. To enable automatic source detection, select Source Detect from the 
Installation menu and set it to Auto. 
Auto Power Off: The CL-420 can be set to power off automatically after 15 minutes of 
no input signal or user input via the remote control. To enable this feature, set it to ON. 
When you do, a warning message appears on-screen five minutes before the shutdown is 
to occur. To prevent the projector from powering off, press any key on the remote control. 
Blue Enable: Blue Enable removes all red and green color information from the image, 
simulating a blue filter. You can use it instead of a blue filter when performing color and tint 
adjustments. 
OSD Position: To change the position of the OSD controls, select OSD Position from the 
Installation menu. Use the up- and down-arrow buttons to select Top Left, Bottom Left, 
Top Right or Bottom Right, then press ENTER.
Source     :Component 1
Resolution:720 x 480
Vert Freq :60 Hz
Horz Freq :31 kHz
Lamp Timer :              720 HR
F/W Version :204.4.205
Installation
LanguageEnglish
Picture ConfigurationFloor Front
OSD Timeout5 secs
OSD TransparentOFF
Source DetectAuto
Auto Power OffOFF
Blue EnableOFF
OSD Position
Keystone
Fan High Speed ModeON
➤ 
						

							Operation
Runco CL-420 Owner’s Operating Manual 43 
Keystone Correction: If the projector and screen are not installed perpendicular to each 
other, the image may become distorted in a trapezoidal shape, as shown in 
Figure 4-10. 
Select Keystone from the Installation menu to compensate for this. 
Figure 4-10. Horizonal and Vertical Keystone Correction
Fan High Speed Mode: If the projector is being used in a high-altitude environment, use 
Fan High Speed Mode to prevent it from overheating. Set Fan High Speed Mode to ON to 
run the fan at high speed; set it to OFF to run the fan at normal speed.
1. The CL-420 keystone correction can compensate for up to 
approximately 15 degrees of screen and/or projector tilt. 
2. Straight lines or the edges of images may appear jagged while 
adjusting the image.
3. Keystone correction is not possible with a 1080i input signal. 
Vertical Keystone Correction Horizontal Keystone Correction
ProjectorProjected Image
Positive values compress top; 
negative values compress bottom. Positive values compress right side; 
Negative values compress left side.
Note 
						

							Operation
44 Runco CL-420 Owner’s Operating Manual
ISF Setting Use the ISF Setting menu to perform advanced picture quality adjustments. This menu 
should be used by ISF-certified technicians only. 
Several controls in this menu are identical to those in the Picture Adjust menu, but are 
accessible only by entering the ISF Calibration menu passcode. This makes it possible to 
restore the picture quality settings to what they were when the projector was installed, 
simply by recalling the “ISF Night” or “ISF Day” preset.
Brightness: Refer to Brightness on page 35. 
Contrast: Refer to Contrast on page 36. 
Color: Refer to Color Saturation on page 36. 
Tint: Refer to Tint on page 37. 
Sharpness: Refer to Sharpness on page 38. 
Gamma: Refer to Gamma on page 38.
Color Temp: Refer to Color Temperature on page 39.
Picture Setting: To recall the Custom1, ISF Night or ISF Day settings, choose Picture 
Setting from the ISF Calibration menu. Then, select “Custom1,” “ISF Night” or “ISF Day” 
and press ENTER, or use the corresponding buttons on the remote control.
White Balance: Refer to White Balance on page 40. 
Save Settings: For each input and supported resolution, the CL-420 lets you save image 
quality settings as presets that you can recall at a later time. You can create up to three 
presets -- designated “Custom1,” “ISF Day” and “ISF Night” -- per input and resolution. 
You should save changes to any of the following settings to a preset; otherwise they will 
be lost when a new input source or resolution is selected:
 Aspect ratio
 Picture adjustments (brightness, contrast, color saturation, tint, sharpness, gamma, 
color temperature, ICC selection and white balance settings)
 Image options (SDTV adjust settings, brightness enhance, lamp power)
To save image settings in the “ISF Day” or “ISF Night” preset, select Save Settings from 
the ISF Calibration menu and select “ISF Day” or “ISF Night.” (To save settings to the 
“Custom1” memory preset, refer to 
Save Settings on page 40.)
Lamp Timer Reset: When you replace the projector lamp, you should also reset the 
lamp hour counter. To do this, select Lamp Timer Reset from the ISF Calibration menu 
and press ENTER. The CL-420 shows the number of hours the projector lamp has been 
in service and asks you to confirm or cancel the reset. Press ENTER to confirm or EXIT 
to cancel. 
For detailed lamp replacement instructions, refer to Lamp Replacement on page 50.
ISF Calibration
Brightness0
Contrast0
Color0
Tint0
Sharpness3
Gamma2.2
Color Temp6500K
Picture Setting
White Balance
Save Settings
Lamp Timer Reset
ICC AdjustStandard
ISF EnableOFF
Blue EnableOFF
Splash Screen Timer60 secs
Noise Reduction0
➤
You must enter a passcode to access the ISF Setting menu. Note 
						

							Operation
Runco CL-420 Owner’s Operating Manual 45 
ICC Adjust: Use the ICC Adjust controls to customize the stored NTSC, HDTV and/or 
PAL color space characteristics. To do this:
1. Select ICC Adjust from the ISF Calibration menu and press ENTER. 
2. Select the color space to modify using the left- or right-arrow buttons. 
3. Select a component color (Red, Green, Blue, Cyan, Yellow or Magenta).
For each component color, you can adjust the following:
• Intensity: This slidebar adjusts the intensity -- also known as luminance -- of a given 
color. 
• Saturation:  This slidebar adjusts the color saturation level -- the amount of that color 
in a video image. Lower settings produce less saturated colors; a setting of “-64” 
removes that color from the image entirely. If the saturation is too high, that color will be 
overpowering and unrealistic.
•Hue: This slidebar adjusts the red/green color hue for true color reproduction of video 
signals. For best results, adjust the hue while displaying an external color bar test 
pattern (
Figure 4-7). 
When you have finished customizing the color space, select Store Setting and press 
ENTER.
ISF Enable: Use ISF Enable to control the display of the ISF logo on the CL-420 splash 
screen upon power-up; see 
Figure 4-11.
Figure 4-11. ISF-Enabled CL-420 Splash Screen
ICC Adjust
Color SpaceNTSC
Intensity0
Saturation0
Hue0
Store Setting
R G BC Y M
CALIBRATED FOR:
CUSTOM BUILT BY: 
						

							Operation
46 Runco CL-420 Owner’s Operating Manual
Blue Enable: Refer to Blue Enable on page 42. 
Splash Screen Timer: Press the right- or left-arrow buttons to set the Splash Screen 
Timer. This timer controls how long the startup (ISF and Runco logo) image stays 
on-screen after you turn on the projector. Select from 15 to 60 seconds, in 5-second 
increments.
Noise Reduction: To apply Digital Noise Reduction (DNR) to the input signal, select 
Noise Reduction from the ISF Calibration menu. Noise reduction is useful for clearing up 
noisy RGB images such as those from a PC. Adjust as desired using the left- or 
right-arrow buttons, keeping in mind that reducing noise (which reduces high frequencies) 
may also “soften” the image. 
						

							Runco CL-420 Owner’s Operating Manual 47 
5.1 
Cleaning the Projector
Unplug the power cord before cleaning the 
projector.
 Avoid using benzene or thinner, as these can 
damage the finish on the projector exterior.
 Do not use volatile agents, such as 
insecticides, on the projector.
 Do not leave rubber or plastic objects in 
contact with the projector for long periods as 
they may damage the finish of the projector.
Wipe off dirt gently with a soft flannel cloth.
 For hard-to-remove dirt, soak a cloth in a 
neutral detergent diluted with water, wring the 
cloth well and then wipe the projector.
 Strong cleaning detergents may discolor, 
warp or damage the coating on the projector. 
Make sure to test on a small, inconspicuous 
area on the projector before using.
5.2 
Cleaning the Lens
Use a commercially available blower or lens 
cleaning paper (for glasses and camera 
lenses) for cleaning the lens. Do not use any 
liquid cleaning agents, as they may wear the 
coating film on the surface of the lens.
 The surface of the lens is easily damaged. Do 
not scrape or hit the lens.
5. Maintenance and Troubleshooting 
						

							Maintenance and Troubleshooting
48 Runco CL-420 Owner’s Operating Manual
5.3 
Cleaning the Intake 
and Exhaust Vents
This CL-420 is equipped with intake and 
exhaust vents to allow the flow of cool air 
through the projector and maintain the 
proper operating temperature.
You should periodically clean the vents by 
vacuuming them with a vacuum cleaner. 
Runco recommends doing this after every 
100 hours of use, or more often if the 
projector is used in a dirty or smoky 
location.
To clean the intake and exhaust vents:
1. Press OFF on the remote control to 
turn off the power. Wait until the cooling 
fan stops.
 
 
 
 
 
2. Unplug the power cord. 
 
 
 
 
 
 
 
3. Remove dust by placing the cleaner 
hose on the intake and exhaust vents.
5.4 
Lamp Maintenance
The projector lamp has a life of 2,000 hours. Maintain proper ventilation to keep the lamp 
operating throughout its lifetime. Do not subject the projector to unnecessary vibration.
 Lamp replacement is recommended after approximately 2,000 cumulative hours of use 
or when you notice a significant deterioration in the picture and color quality. To find out 
how long the currently-installed lamp has been in service, select 
Information from the 
Image Options menu.
 The actual lamp service life may be less than 2,000 hours depending on the 
environment in which the projector is used.
 For lamp replacement, please contact your nearest Runco authorized service 
center or Runco dealer. Do not attempt to replace the lamp yourself!
Side and front view
Ventilation holes
Power OFF 
button
OFF ON
ENTER
LIGHT EXITMENU
COMP1VIDEORGBHD
AC 110-240
AC 110-240 
						

							Maintenance and Troubleshooting
Runco CL-420 Owner’s Operating Manual 49 
5.5 
Lamp CautionsThis projector uses a pressurized mercury lamp. A loud sound may 
indicate lamp failure. Lamp failure is caused by excessive shock, 
improper cooling, surface scratches or deterioration of the lamp due 
to usage. The period of time up to failure largely varies depending on 
the individual lamp and the condition and the frequency of use. It is 
important to note that failure can often result in the bulb cracking.
When the lamp replacement indicator and on-screen display icon are 
illuminated or are flashing, replace the lamp with a new one 
immediately, even if the lamp appears to be operating normally.
If the lamp breaks, glass particles may spread inside the lamp cage 
or gas contained in the lamp may be vented into the room from the 
exhaust vent. As the gas in this lamp contains mercury, ventilate the 
room well if the lamp breaks and avoid all exposure to the released 
gas. In case of exposure to the gas, consult a doctor as soon as 
possible.
If the lamp breaks, there is also a possibility that glass particles may 
spread inside the projector. If this happens, contact your nearest 
Authorized Dealer to remove the damaged lamp and ensure safe 
operation.
Do not remove the lamp unit immediately after turning off the 
projector. Touching a hot lamp can cause burns or injury. Wait at 
least one hour after the disconnecting the power cord to allow the 
surface of the lamp unit to fully cool before removing.
Caution 
						

							Maintenance and Troubleshooting
50 Runco CL-420 Owner’s Operating Manual
5.6 
Lamp Replacement
1. Turn off the projector and wait for the cooling fan to stop. 
2. Unplug the power cord. Allow the projector to cool down for approximately one hour 
prior to removing the lamp assembly for replacement.
3.Loosen the two captive lamp cover 
screws and remove the cover. 
 
 
 
 
 
 
 
 
 
4. Loosen the four lamp assembly 
mounting screws.
5.Grasp the lamp assembly 
handle and pull gently, removing 
the lamp module from the 
projector housing. As you do 
so, the lamp cooling interlock 
switch on the inside of the lamp 
mounting frame (near the top) 
moves to the OFF position. 
 
 
 
6. Gently slide the new lamp assembly into the mounting frame. Align the two power 
connectors at the top of the lamp assembly with the two sockets at the top of the 
mounting frame. Press gently on both sides of the lamp assembly to snap it into 
place. As you do so, the lamp cooling interlock switch returns to the ON position.
7. Tighten the lamp assembly mounting screws. 
8. Replace the lamp cover and secure the captive lamp cover screws.
9. Plug in the projector and turn it on. 
10. Reset the Lamp Timer to zero. To do this, select Lamp Timer Reset from the ISF 
Calibration menu and press ENTER. The CL-420 shows the number of hours the 
projector lamp has been in service and asks you to confirm or cancel the reset. Press 
ENTER again to confirm.