Read LG 42PB4D-AA (CHASSIS:PB73B) Service Manual online
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A
EDID for HDMI-3 (DDC (Display Data Channel) Data)
EDID table =
EDID table =
A
EDID for RGB (DDC (Display Data Channel) Data)
EDID table =
EDID table =
4. POWER PCB Assy Voltage
Adjustments
(Va, Vs Voltage adjustments)
4-1. Test Equipment :
D.M.M. 1EA
4-2.Connection Diagram for Measuring
: refer to Fig.2
4-3. Adjustment Method
(1) Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D.M.M to Va pin of P812, connect
2) Connect + terminal of D.M.M to Va pin of P812, connect
- terminal to GND pin of P812.
3) After turning VR901, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
(Deviation; ±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P812, connect
– terminal to GND pin of P812.
2) After turning VR951, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
(Deviation; ±0.5V)
5. MST3361M-Set Adjustment
5-1. Synopsis
MST3361M-Set adjustment to set the black level and the Gain
of optimum with an automatic movement from the analog =>
digital converter.
of optimum with an automatic movement from the analog =>
digital converter.
5-2. Test Equipment
Service R/C, 801GF(802B,802F,802R),
MSPG-925FA,MSPG-1025D Pattern Generator.
( 480i, 1080p Horizontal 60Hz Color Bar Pattern output will be
possible and the output level will accurately have to be
revised with 0.7±0.1Vp-p)
* It should be checked because the above pattern may be
different according to the model and the pattern of the used
equipment.
MSPG-925FA,MSPG-1025D Pattern Generator.
( 480i, 1080p Horizontal 60Hz Color Bar Pattern output will be
possible and the output level will accurately have to be
revised with 0.7±0.1Vp-p)
* It should be checked because the above pattern may be
different according to the model and the pattern of the used
equipment.
5-3. Adjustment method
(1) Component1 adjustment method.
1) Select Component1 as the input with Color Bar Pattern
in 480i 60Hz mode and select ‘Component1’ on 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 ‘1. ADC 480i Comp1’. Pressing the Vol+
Key to adjust the component1.
and select the ‘1. ADC 480i Comp1’. Pressing the Vol+
Key to adjust the component1.
3) When the adjustment is over, 'ADC Component1
Success’ is displayed.
4) When the adjustment is not normally completed, a
message saying ‘ADC Component1 480i Fail’ is
displayed. When the component is not connected, a
message saying ‘Component1 Not Connected’, when
the input format is not 480i, a message saying ‘Not
Valid Format’ and when the input signal is not coming
out, a message saying ‘Check Signal Status’ is
displayed for 1 second.
(MSPG-925FA : -> model : 209, pattern : 65)
displayed. When the component is not connected, a
message saying ‘Component1 Not Connected’, when
the input format is not 480i, a message saying ‘Not
Valid Format’ and when the input signal is not coming
out, a message saying ‘Check Signal Status’ is
displayed for 1 second.
(MSPG-925FA : -> model : 209, pattern : 65)
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<Fig.3> Adjust Pattern : 480i, 1080p 60Hz Color Bar Pattern
(Fig.2) Connection diagram of power adjustment for measuring
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