Runco Cl 420 Projector User Manual

Maintenance and Troubleshooting
Runco CL-420 Owner’s Operating Manual 51 
5.7 
Troubleshooting Tips
Table 5-1 provides some general guidelines for troubleshooting problems you may 
encounter with the CL-420. If you encounter an issue not described here, please contact 
your Runco dealer or Runco Technical Support. 
Table 5-1. Troubleshooting Chart 
SymptomPossible Cause(s)Solution
The projector does not turn 
on after initial installation.  The CL-420 is not plugged 
in or the AC outlet is not 
active....

Maintenance and Troubleshooting
52 Runco CL-420 Owner’s Operating Manual
Notes: 

Runco CL-420 Owner’s Operating Manual 53 
6.1 
RS-232 Connection 
and Port Configuration
To interface the CL-420 with a home theater automation/control system or a PC running 
terminal emulation software, connect it to your control system or PC as shown in 
Figure 
3-12. 
Configure the RS-232 controller or PC serial port as follows: no parity, 8 data bits, 1 stop 
bit and no flow control. Set the baud rate to 9600, to match that of the CL-420 RS-232 
port. 
6.2 
Serial Command 
Syntax
Table 6-1 lists the...

Serial Communications
54 Runco CL-420 Owner’s Operating Manual
RRD00Selects the ANAMORPHIC (16:9) aspect ratioRRDOK
RRD01Selects the STANDARD (4:3) aspect ratioRRDOK
RRD02Selects the LETTERBOX aspect ratioRRDOK
RRD03Selects the VIRTUALWIDE aspect ratioRRDOK
RRD04Selects the CINEMA (2.35:1) aspect ratioRRDOK
RRD05Selects the VIRTUAL CINEMA aspect ratioRRDOK
RRE00Turns the projector OFFRREOK
PONTurns the projector ONRandom (Note 2)
Table 6-1. Serial Commands (continued)
Command Description Reply
Notes:
1....

Runco CL-420 Owner’s Operating Manual 55 
7.1 
CL-420 Specifications
Table 7-1 lists the CL-420 specifications.  
7. Specifications
Table 7-1. CL-420 Specifications 
Projector Type:Digital Light Processing (DLP), single-chip SuperOnyx™ 
DMD
Native Resolution:1280 x 720 (16:9)
Aspect Ratios:4:3, Letterbox, 16:9 Anamorphic, VirtualWide, Cinema, 
Virtual Cinema
Video Standards:NTSC, PAL, SECAM
Scan Frequency:Horizontal: 15 - 80 kHz 
Vertical: 43 - 100 Hz
Picture Size (16:9 Screen):Recommended Width: 72 to...

Specifications
56 Runco CL-420 Owner’s Operating Manual
Brightness and Contrast:Cinema Standards Measurement System (CSMS) 
Specifications
- Brightness: 19 foot-Lamberts (fL)
- Contrast Ratio: 245:1
These measurements are taken from the projector in a controlled, 
home theater environment. All measurements are made to 
ANSI/NAPM IT7.228-1997 specifications using the Photo 
Research PR-650 SpectraColorimeter and Minolta LS-100 
Luminance Meter, Video Essentials test DVD and a 1.3 gain, 
72-inch wide...

Specifications
Runco CL-420 Owner’s Operating Manual 57 
7.2 
CL-420 Dimensions
Figure 7-1 shows the CL-420 dimensions. 
Figure 7-1. CL-420 Dimensions
3.425 in
87.0 mm3.425 in
87.0 mm 13.98 in
355.0 mm
8.276 in
210.2 mm5.701 in
144.8 mm
6.457 in
164.0 mm
0.8976 in
22.8 mm
7.354 in
186.8 mm7.354 in
186.8 mm 6.661 in
169.2 mm16.34 in
415.0 mm
16.85 in
428.0 mm0.1969 in
5.0 mm 16.12 in
409.5 mm 4.157 in
105.6 mm 

Specifications
58 Runco CL-420 Owner’s Operating Manual
7.3 
Computer Signal 
Compatibility
The CL-420 can display video signals from a variety of computer sources via its RGB-HD 
and DVI inputs. It is compatible with the three most common sync modes -- 
sync-on-green, composite sync and RGB with separate sync -- as well as XGA display 
adapters that use advanced intelligent compression.
Table 7-2 lists the signal types that are compatible with the CL-420, and indicates which 
of those are VESA...

Specifications
Runco CL-420 Owner’s Operating Manual 59 
PCSVGA800 x 600
53.785√√
Upscale56.890√
64.0100√
PCXGA1024 x 768
35.543√
True
40.350√
48.460√√
56.570√√
60.075√√
68.785√√
73.590√
77.296
80.6100
MAC 13”VGA640 x 48034.967UpscaleMAC 16”SVGA832 x 62449.675
MAC 19”XGA1024 x 76848.460√True
Table 7-2. Computer Signal Compatibility Chart (continued)
PC/MAC/
WSResolutionHorizontal 
Frequency 
(kHz)Vertical 
Frequency 
(Hz)VESA 
StandardDVI 
SupportDisplay
Notes:
1. This projector may not be able to...

Specifications
60 Runco CL-420 Owner’s Operating Manual
7.4 
Video Signal 
Compatibility
Table 7-3 lists numerous common video signal formats and indicates which input(s) on the 
CL-420 can accept a given format. 
Table 7-3. Video Signal Compatibility Chart 
ResolutionH-Freq 
(kHz)V-Freq 
(Hz)Compatible Inputs (Note 1)
Comp. 
1Comp. 
2S-
VideoCom-
positeVGADVI
SD 
Video
NTSC640 x 
480i15.7359.94/
60√√√√
PAL768 x 
576i15.6350√√√√
SECAM√√√√
NTSC-
4.43
(adjustment required)
PAL-M
PAL-N
NTSC-
J
PAL-60
NTSC-...