THOMSON CHASSIS MT62L, Service Manual

Page: 7 / 42

Factory Alignment Specification of normal SIACP
Page 5 of 19
Half Color & Gray bars
CMP (YPrPb) Chroma/QuantumData 1080i@60Hz
Half Color & Gray bars
HDMI DVD with HDMI compliancy Movie 720p@60Hz
Headphone RF cable First channel
Loud Speakers RF cable First channel
SCART1 (CVBS out) RF cable First channel
SCART2 (CVBS out) Chroma/Fluke PAL Half Color & Gray bars
Audio tones can be defined by the factory (ie: 1KHz & 3KHz, sweep, …).
Picture video formats can be changed by the factory according to their own standard.
1.5. ADC Calibration
To ensure the ADC performance, the error of “gecable” must be less than 2%. The
following inputs require an ADC calibration for the time being.
ƒ
VGA
(skip this step if no VGA input on the chassis)
Provide a test signal
1024×768@60Hz
with
WhiteBlack squares
.
Select the corresponding
FactoryMenu
->
ADC Calibration
->
Auto Color
, then press ”
OK
”
key on RemoteControl to start. Value of status will change to “
OK
” if succeed.
ƒ
CMP
Provide a test signal
720p@60Hz
with
100% 8 steps ColorBar
.
Select the corresponding
FactoryMenu
->
ADC Calibration
->
Auto Color
, then press ”
OK
”
key on
RemoteControl
to start. Value of status will change to “
OK
” if succeed.
ƒ
Scart RGB
Provide a test signal
PAL 576i
with
100% 8 steps ColorBar
.
Select the corresponding
FactoryMenu
->
ADC Calibration
->
Auto Color
, then press ”
OK
”
key on
RemoteControl
to start. Value of status will change to “
OK
” if succeed.
The mean of status value:
“
NONE
”= no input is successful in ADC calibration.
“
OK
”= current input is successful in ADC calibration.
“
NOK
”= current input is fail in ADC calibration.
“
ALL
”= all inputs required are successful in ADC calibration.
R Gain, G Gain, B Gain, R Offset, G Offset, B Offset in
FactoryMenu
->
ADC Calibration
page
can be fine-tuned if necessary but not required.
1.6. DDC & EDID Test
The E-EDID data structure are according to VESA Enhanced EDID 1.3 (and EIA/CEA-861B for
HDMI).
Both VGA and HDMI have their own separate bin files:
For EDID check, it’s needed to check whether the correct EDID is downloaded by checking
corresponding EDID NVM Checksum or read them out to check bit by bit if it is in line with the
released EDID bin file.
1.7. HDCP Test
For HDCP compliancy, it’s needed to check whether the HDCP key has been well set.