TVP-21
56
2. Initial Contact Analysis
Detail description of the steps in the Initial
Contact Flowchart
Start
Initial Analysis
The Initial Contact Analysis flowchart is a high-level diagnostic tool
designed to quickly locate the general area of the failure, and the specific
procedures (flowcharts) to troubleshooting and resolve the problem.
The
flowchart asks the following five general questions, in the sequence
shown, to take you from an overall power supply fault to a specific
power supply, video, or audio fault.
1) Does the Green Power/Standby LED Turn On?
2) Is the Red Power/Standby LED Flashing?
3) Is Video Present?
4) Is the Video Distorted?
5) Is Audio Present?
Let us briefly discuss the logic behind each of these questions.
Does
Green LED
Turn ON?
No
Yes
Does the Green Power/Standby LED Turn-On?
This question will
determine if there is a power supply problem. The basic idea is does
the unit turn on and stay on. The 2005 SXRD models do not have a
Red Standby/Timer LED, as was the case on previous models. The
Red Power/Standby LED was a good indicator of a properly functioning
Standby 5V power supply. The Standby 5V is active as long as the unit
is plugged into the AC outlet, and the Red Power/Standby LED glow.
However, in the absents of the Red Power/Standby LED the Green Power/
Standby LED is the next best indicator of a proper functioning Standby 5V
power supply.
If the Green Power/Standby LED does not begin to flash after the “ON”
button is pressed then you are directed to the “Power-On Troubleshooting
Flowchart B” to troubleshoot a power supply failure.
Is RED LED
Flashing?
No
Yes
Is the Red Power/Standby LED Flashing?
In some cases the Green
Power/Standby LED will begin flashing, however, the unit may shut
down with the RED Power/Standby LED flashing. In this case, the TV’s
microprocessor has detected a system error and has gone into protection
mode. If the Red Power/Standby LED is flashing the flowchart directs
you to the “Protection Mode Troubleshooting Flowchart C1, C2, C3, and
C4” to troubleshooting a protection error condition. The particular error is
indicated by the unique flash pattern of the Red Power/Standby LED and
there is an individual flowchart for each flash pattern.
Summary of Contents for KDS-R60XBR1 - 60" Rear Projection TV
Page 1: ...Models KDS R50XBR1 KDS R60XBR1 Diagnostics and Troubleshooting Course TVP 21 Training Manual ...
Page 49: ...TVP 21 46 Disassembly Procedures Wire Routing Diagrams Wire Routing Diagrams ...
Page 50: ...TVP 21 47 Disassembly Procedures Wire Routing Diagrams cont ...
Page 51: ...TVP 21 48 Disassembly Procedures Wire Routing Diagrams cont ...
Page 52: ...TVP 21 49 Disassembly Procedures Wire Routing Diagrams cont ...
Page 53: ...TVP 21 50 Disassembly Procedures Wire Routing Diagrams cont ...
Page 58: ...TVP 21 55 Chapter 2 Initial Contact Analysis ...
Page 72: ...TVP 21 69 4 Protection Circuits Troubleshooting Flowcharts Flowchart C 1 Figure 4 2 ...
Page 73: ...TVP 21 70 4 Protection Circuits Flowchart C 2 Figure 4 3 ...
Page 74: ...TVP 21 71 4 Protection Circuits Flowchart C 3 Figure 4 4 ...
Page 75: ...TVP 21 72 4 Protection Circuits Flowchart C 4 Figure 4 5 ...
Page 88: ...TVP 21 85 5 Video Processing System Video Distortion Flowchart E Figure 5 3 ...
Page 89: ...TVP 21 86 5 Video Processing System Optical Block Flowchart F Figure 5 4 ...
Page 98: ...TVP 21 95 6 Audio Processing System Troubleshooting Flowchart ...
Page 102: ...TVP 21 99 Appendix 2005 SXRD Service Mode Options ...