Service Modes and Fault Finding
5.
5.
Service Modes and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Stepwise Start-up
5.4 Software Upgrading
5.5 Fault Finding and Repair Tips
5.1
Test Points
As most signals are digital, it will be difficult to measure
waveforms with a standard oscilloscope.
Perform measurements under the following conditions:
•
Service Default Mode.
•
Video: Colour bar signal.
•
Audio: 3 kHz left, 1 kHz right.
5.2
Service Modes
The Service Mode feature is split into five parts:
•
Factory Mode.
•
Customer Service Mode (CSM).
The Factory mode offer features, which can be used by the
Service engineer to repair/align a TV set. Some features are:
•
Make alignments (e.g. White Tone), reset the error buffer
(Factory Mode).
The CSM is a Service Mode that can be enabled by the
consumer. The CSM displays diagnosis information, which the
customer can forward to the dealer or call centre. In CSM
mode, “CSM”, is displayed in the top right corner of the screen.
The information provided in CSM and the purpose of CSM is to:
•
Increase the home repair hit rate.
•
Decrease the number of nuisance calls.
•
Solved customers’ problem without home visit.
Note: For the new model range, a new remote control (RC) is
used with some renamed buttons. This has an impact on the
activation of the Service modes. For instance the old “MENU”
button is now called “HOME” (or is indicated by a “house” icon).
5.2.1
General
Next items are applicable to all Service Modes or are general.
Software Identification, Version, and Cluster
The software ID and version will be shown in the main menu
display of CSM.
The screen will show: “AAAAB-X.YYY”, where:
•
AAAA is the chassis name: TPS1011A x.yyy.
•
B is the region indication: E = Europe, A = AP/China, U =
NAFTA, L = LATAM.
•
X is the main version number: this is updated with a major
change of specification (incompatible with the previous
software version). Numbering will go from 1 - 99 and
AA - ZZ.
- If the main version number changes, the new version
number is written in the NVM.
- If the main version number changes, the default settings
are loaded.
•
YYY is the sub version number: this is updated with a minor
change (backwards compatible with the previous
versions). Numbering will go from 000 - 999.
- If the sub version number changes, the new version
number is written in the NVM.
- If the NVM is refreshed, the software identification,
version, and cluster will also be written to NVM.
5.2.2
Contents of the Factory mode:
Purpose
•
To perform extended alignments.
Specifications
•
Displaying and or changing Panel ID information.
•
Various software alignment settings.
•
Testpattern displaying.
•
Public Broadcasting Service password Reset.
•
etc.
How to Activate the Factory mode
To activate the Factory mode, use the following method:
•
Press the following key sequence on the remote control
transmitter: from the “Home screen” press “1999”, directly
followed by the “Back” button. Do not allow the display to
time out between entries while keying the sequence.
After entering the Factory mode, the following items are
displayed,
Table 5-1 Factory mode overview
Item Item value
Default value
Description
32"
39"
42"
0
Main-MCU Ver
TPS1011A_2.01
Main-MCU Version
1
Bootloader Ver
V0.01
Bootloader Version
2
Sub-MCU Ver
V0.01
SUB-MCU Version
3
EEPROM Ver
V0.01
EEPROM Version
4
Date
Dec 20 2012
Software release date
5
ModelName
32PFL3
008
39PFL
3008
42PFL
3008
Model name
6
Scaler
MST6931XP
Scaler model
7
Panel Type
TPT315
B5-A04
2
TPT39
0J1_HJ
1L02
TPT42
0H2_H
VN01
Display model
8
Source
TV
Input source
9
Auto Color
GO
Only need to do automatic correction input source of effective,otherwise it is not action
10
W/B Pattern
OFF
W/B Pattern
11
SSC
SSC
12
Enable
OFF
Enable on/off
13
LVDS Span
35.0KHz
LVD Span
14
LVDS Step
2.00%
LVD Step
15
ADC
YPbPr(SD)
ADC
16
Gain
RGB
RGB
RGB
ADC Gain
17
Offset
RGB
RGB
RGB
Offset RGB
18
ColorTemp
Normal
The current set of color temperature
18
Scaler
MST6931XP
Scaler model
