LG 15LS1R Service Manual page 10

3.4 Function Check
3.4.1 Check display and sound
"IIC_ SW" must set "1"
A
Check Input and Signal items. (cf. work instructions)
1. TV
2. AV (CVBS/ S-Video)
3 Component
4. H/P Out
DCXO Adjustment
3.4.2
3.4.2.1 DCXO Adjustment :
A
Convert to AV in Input-Mode
A
Signal equipment displays 0.7V, 8 Step color pattern.
(Model:207, Pattern: 38 at MSPG925L)
- Output Voltage : 700 mVp-p
- Impress Resolution 576i and Color pattern which
follows in the MSPG925L.
A
Adjust by commanding AUTO_DCXO (0xFC) 0x00
0x00 instruction.
[Adjustment pattern(DCXO)]
* Caution*
If DDC CMD do n't work, please check below.
1. Enter SVC menu by SVC Remote controller
2. Enter "ETC" menu
Check please, IIC_SW is "0" or "1".
- IIC_SW "0" : ADC calibration with auto adjustment equipment..
- IIC_SW "1" : Factory default (Shipping condition), DDC
Communications(DDC2B).
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. Total Assembly line process
4.1 Adjustment Preparation
"IIC_ SW" must set "0"
A
Above 30 minutes H/run in RF no signal
A
15 Pin D-Sub Jack is connected to the signal of
Pattern Generator.
4.2 Confirmation of Luminance
A
Set Statement
Input : CVBS
Contrast : 100(Max)
Brightness : 50
CSM : Normal
A
Signal equipment displays
Output Voltage : 700 mVp-p
Output Mode : Full White pattern (100 IRE)
A
Confirm whether luminance is over 260cd or not
4.3 Confirmation of Color Coordinate
A
Input Full White Pattern
A
Set CSM : Normal (9300K)
A
Confirm whether x = 0.283±0.03, y=0.298±0.03 or not
A
Set CSM : Warm (6500K)
A
Confirm whether color coordinate is x= 0.313±0.03,
y=0.329±0.03 or not
A
Set CSM : Warm (11000K)
A
Confirm whether color coordinate is x= 0.274±0.03,
y=0.286±0.03 or not
A
After confirming Color coordinates, Must return to
Normal
* After Confirming color coordinate and luminance, "IIC_ SW"
must set "1"
- 10 - LGE Internal Use Only