Hughes Jvc 200 Projector Service Manual

Chapter 4---Maintenance (Removal/Replacement) 
4-24   Model 200 Service Manual 
  

Chapter 5---Troubleshooting 
5.0  Troubleshooting 
Contents 
5.1   Status LEDs........................................................................\
.....5-1 
5.2   Error Codes........................................................................\
......5-4 
5.3   Troubleshooting Guide.............................................................5-5 
 
5.1   Status LEDs 
The illustrations below indicate where various LEDs are located that ind\
icate 
proper or improper operation of the System...

Chapter 5---Troubleshooting 
 
Figure 5-2.   Left side of projector with rear cover off. 
 
Figure 5-3.   Right Side of projector with rear cover off. 
 
5-2 Model 200 Service Manual  

Chapter 5---Troubleshooting 
   
Figure 5-4.   Convergence/Deflection and Video Amplifier LEDs. 
5.2   Error Codes 
For certain errors that may occur in the Model 200 Projector the softwar\
e 
provides error codes that are helpful in determining the nature of the 
problem. These error codes are visible on the left side of the monitor 
screen when using a PC connected to Port A or Port B.  
Table 5-1.   Error Categories: 
Category 
Number Error Category Description 
1 CEXEC Operating System. 
2 FLASH HW...

Chapter 5---Troubleshooting 
The error codes listed in Table 5-2 describe problems associated with 
software (Version 0.9.8) and hardware while the projector is operating\
. 
The first column of the table lists the error number code that appears o\
n 
the PC screen. The second column describes the on-screen text. The 
third column provides a description of the problem and any other pertine\
nt 
information. 
Table 5-2.   Error Codes. 
ERROR 
NUMBER ON-SCREEN TEXT DESCRIPTION 
1.5 “Invalid read/wrt”...

Chapter 5---Troubleshooting 
4.6 “VA PCA Not OK” /VA_OK is High (BAD). 
4.7 “VP PCA Missing” “No Slave Ack” status on first poll of VP. 
4.8 “VP PCA Not OK” VP_OK is High (BAD) 
4.9 “RTG PCA Missing” “No Slave Ack” status on first poll of RTG 
4.10 “RTG PCA Not OK” RTG_OK is High (BAD) 
4.14 “Lamp Startup” Lamp Failed to light (/LAMP_LIT_B not Low for 3 
seconds out of 20 seconds.) 
4.15 “Low Voltage PS” Low Voltage PS failed (/LV_OK_B is High). 
4.16 “High Voltage PS” High Voltage PS failed (/HV_OK_B is...

Chapter 5---Troubleshooting 
error. If it occurs, copy the 3 lines that appear on the screen, note what occured 
just prior to this failure, and call Hughes-JVC. 
5.3.   Troubleshooting Guide 
Table 5-2 shows some common projector problems, what to check when problems occur, possible 
solutions and the section in this Service Manual (If User’s Guide co\
ntains pertinent information, the 
appropriate section will be given) that provides some related information on the problem. 
Table 5-3. Troubleshooting...

Chapter 5---Troubleshooting 
Table 5-3.   Troubleshooting Guide (continued) 
PROBLEM CHECK POSSIBLE SOLUTION SECTION 
Arc Lamp Brightness flicker or 
picture is very dim. 
Arc Lamp may have too 
many hours of usage. 
Replace Arc Lamp. 
4.4 
Image out of focus Spacer balls not visible. Perform the Projection 
Lens Focus procedure.  
User’s Guide 5.5.15 
 ILA® “spacer balls” are 
visible but the image is 
fuzzy. 
Perform the CRT 
Mechanical Focus 
procedure. 
3.5 
 CRT focus range is 
limited and the image...

Chapter 5---Troubleshooting 
PROBLEM CHECK POSSIBLE SOLUTION SECTION 
XY Convergence Not enough range in Red 
or Blue XY convergence. 
Adjust Red or Blue 
CENTERING to match 
Green. 
5.5.11 
Picture Color 
Balance 
Red, Green, or Blue is 
missing in the image. 
ILA® assembly bias 
voltage is incorrect or 
there is no signal-replace 
Video Amplifier Board. 
4.13 
 Red, Green, or Blue 
lacks color. 
Replace ILA® assembly 
or Video Amplifier Board. 
4.16, 4.13 
 Grey scale test pattern is 
correct but image...

Chapter 5---Troubleshooting 
 
Table 5-3.   Troubleshooting Guide (continued) 
PROBLEM CHECK POSSIBLE SOLUTION SECTION 
Picture-Various 
Problems 
Image jitter and noise. Replace Video Processor 
Board. 
4.8 
 Image jitter present at 
one source only. 
Replace Raster Timing 
Generator. 
4.8 
 Image is not level. Level the projector or 
rotate the CRT Yoke. 
3.6 
 “Flagwaving” at top of 
picture or top of image is 
skewed. 
VTR mode checked in 
Timing menu. Deselect 
VTR mode.  
User’s Guide 4.9...