Read LG 42LB1DRA (CHASSIS:LA61A) Service Manual online
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7. Cable Operation Confirmation
(1) Confirm that the Cable Card is inserted in the slot.
(2) Enter the EZ adjust menu by pressing the Adjust key on
(2) Enter the EZ adjust menu by pressing the Adjust key on
the Service Remote Control (S R/C).
(3) Go to number 2 Cable Check and press the Right key (
G
) .
(4) Confirm items below.
<Caution>
Each PCB Assy must be checked by Check JIG Set before
assembly.
Each PCB Assy must be checked by Check JIG Set before
assembly.
8. EDID(The Extended Display
Identification Data)/DDC
(Display Data Channel) Download
(Display Data Channel) Download
This is the function that enables “Plug and Play".
8-1. HDMI EDID Data Input
(1) Required Test Equipment
1) PC, Jig for adjusting DDC. (PC serial to D-sub
Connection equipment)
2) S/W for writing DDC(EDID data write & read)
3) D-Sub cable
4) Jig for HDMI Cable connection
3) D-Sub cable
4) Jig for HDMI Cable connection
(2) Preparation for Adjustments & Setting of
Device
1) Set devices as below and turn on the PC and JIG.
2) Open S/W for writing DDC (EDID data write & read).
2) Open S/W for writing DDC (EDID data write & read).
(operated in DOS mode)
10. ADC-Set Adjustment
10-1. Synopsis
ADC-Set adjustment to set the black level and the Gain to
optimum.
optimum.
10-2. Test Equipment
Service R/C, 801GF(802B, 802F, 802R) or MSPG925FA
Pattern Generator
(720P The Horizontal 100% Color Bar Pattern output will be
possible and the output level will accurately have to be
revised with 0.7±0.1Vp-p)
Pattern Generator
(720P The Horizontal 100% Color Bar Pattern output will be
possible and the output level will accurately have to be
revised with 0.7±0.1Vp-p)
10-3. Adjustment
(1) ADC 480i Component1 Adjustment
- Check the connection Component1 to the test Equipment
1) Select Component1 as the input with 100% Horizontal
1) Select Component1 as the input with 100% Horizontal
Color Bar Pattern(HozTV31Bar) in 480i Mode and
select ‘Normal’ in screen.
select ‘Normal’ in screen.
2) After receiving signal for at least 1 second, press the
ADJ Key on the Service R/C to enter the ‘Ez-Adjust’ and
select the ‘4. ADC 480i Comp1’. Pressing the Enter key
to adjust with automatic movement.
select the ‘4. ADC 480i Comp1’. Pressing the Enter key
to adjust with automatic movement.
3) When the adjustment is over, ‘ADC Component1
Success’ is displayed.
4) If the adjustment has errors, ‘ADC Configuration Error’ is
displayed. And error massage (‘Component Not
Connection’ or ‘Change Format to 480i’ or ‘Check
Pattern of device’) is displayed for 1 second.
Connection’ or ‘Change Format to 480i’ or ‘Check
Pattern of device’) is displayed for 1 second.
Name
Descrambler
Check
CableCARD
OOB Path
FDC_SNR
Video Signal
Normal
OK
CableCARD
TM
is inserted.
OK(Lock)
OK(20dB above)
Normal Screen
Defective
Not OK
CableCARD
TM
is removed.
Not OK(Unlock)
Not OK(20dB under)
Black Screen
(No Picture)
PDP TV SET
(or Digital Board)
<Fig. 2>
<Fig. 3> Adjustment Pattern : 480i/1080i 60Hz HozTV31 Bar Pattern
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