19LS4R (CHASSIS:LP73A) - LG TV Service Manual (repair manual). Page 11

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- Adjust by commanding AUTO_COLOR_ADJUST

(0xF1) 0x00 0x02 instruction.

2) Confirmation

- We confirm whether “0x8E” address of EEPROM

“0xB4” is “0xAA” or not.

- If “0x8E” address of EEPROM “0xB4” isn’t “0xAA”, we

adjust once more.

- We can confirm the ADC values from “0x00~0x05”

addresses in a page “0xB4”.

A

A

- Check Input and Signal items. (cf. work instructions)

1) TV
2) AV1 (SCART)
3) AV2 (CVBS/ S-Video)
4) COMPONENT (480P)
5) RGB (PC : 1024 x 768 @ 60hz)
6) HDMI
7) PC Audio In and H/P Out

* Display and Sound check is executed by Remote control.

(1) Above 30 minutes H/run in RF no signal 
(2) 15 Pin D-Sub Jack is connected to the signal of Pattern

Generator.

(1) Set Input to RGB.
(2) Input signal : (1440 x 900@60Hz) -> 19LS4R

Full white 216/255 gray level (85 IRE, Model : 112, Pattern
: 78 at MSPG925L)

(3) Input signal : (1680 x 1050@60Hz) -> 22LS4R

Full white 216/255 gray level (85 IRE, Model : 122, Pattern
: 78 at MSPG925L)

(4) Set CSM : Cool
(5) Confirm whether x = 0.285±0.015, y = 0.293±0.015 or not.

(1) Set Input to AV2.
(2) Input signal : CVBS, PAL@50Hz
(3) Set PSM : Dynamic / CSM : Cool
(4) Confirm whether x=0.285±0.015, y=0.293±0.015 or not.

(1) Set Input to COMPONENT.
(2) Input signal : 480P

Full white 216/255 gray level (85 IRE Model : 212, Pattern :
78 at MSPG925L)

(3) Set PSM : Dynamic / CSM : Cool
(4) Confirm whether x = 0.285±0.015, y = 0.293±0.015 or not.

A

Confirm that each items satisfy under standard condition

that was written product spec.

A

Confirm Video and Sound at each source.

- Select input AV1 and whether picture is displayed or not.
- SCART output displayed or not.
- Select input AV2(S-video) and whether picutre is

displayed or not

- Select input AV2(CVBS) and whether picture is displayed

or not

- Select input TV whether picture is displayed or not.
<In Gumi Factory>

C05(E05) - TELETEXT Function Check.
;(Applicable to the model that has Teletext code set-up

item in Product.

C07(E07) - Nicam DUAL Check
C52(E52) - Nicam Stereo

- Select input RGB and whether picture is displayed or not.

- Select input COMPONENT and whether picture is

displayed or not.

- Select input HDMI and whether picture is displayed or not

- Check if Power LED Color and Power Consumption operate

as standard. 

(1) Set Input to RGB and connect D-sub cable to set.
(2) Measurement Condition : 230V@ 50Hz (Analog)
(3) Confirm DPM operation at the state of screen without

Signal

1) Connect D-sub Signal Cable to D-Sub Jack.
2) Connect HDMI Signal Cable to HDMI Jack.
3) Write EDID DATA to EEPROM(24C02) by using DDC2B

protocol.

4) Check whether written EDID data is correct or not. (refer

to Product spec).

1) ANALOG DATA 128Byte