LG 55LH95QD, Service Manual

Page: 13 / 76

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only - 13 -
6. GND and Internal Pressure check
6.1. Inspection Mmthod
1) GND & Internal Pressure auto-check preparation
- Check that Power Cord is fully inserted to the SET.
(If loose, re-insert)
2) Perform GND & Internal Pressure auto-check
- Unit fully inserted Power cord, Antenna cable and A/V
arrive to the auto-check process.
- Connect D-terminal to AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
(Remove CORD, A/V form AV JACK BOX)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator.
- If OK, Good lamp will lit up and the stopper will allow the
pallet to move on to next process.
6.2. Checkpoint
• TEST voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
• TEST time: 1 second
• TEST POINT
- GND TEST = POWER CORD GND & SIGNAL CABLE
METAL GND
- Internal Pressure TEST = POWER CORD GND & LIVE &
NEUTRAL
• LEAKAGE CURRENT: At 0.5mArms
7. ETC.
7.1. USB S/W Download (option)
(1) Overview
USB download allows fast S/W upgrade in SVC areas or
during Board-level production.
(2) Dowunload method
1) After Set on, confirm that image is displayed. (For
updating Monitor, first input change to HDMI5)
2) Insert USB memory stick that contains the S/W and after
a few seconds, Upgrade OSD is displayed.
(If the version of download file in USB is lower than the
current version, Upgrade OSD is not displayed)
3) After download is finished, automatically Power off/on is
executed.
(If auto power on/off is not executed, perform the power
off/on manually)
4) S/W upgrade is completed and eject USB Memory Stick
form USB jack.
5) By pressing IN-START key on the adj. R/C, check the
S/W version.
7.2. TOOL OPTION
(1) Overview
- The model name and spec. will be confirmed and
modified by adj. menu.
- No Modification at discretion
(2) Confirm/Modify method
1) By Pressing ADJ key, [EZ ADJUST] -> [0.Tool Option1].
2) In the Tool Option1, It is possible to modify the Inch/
Tool/ Module maker/ Module revision.
3) Contents of Tool Option 1~4 are like the section 7.2.(3)
* Entering into IN-START mode, [1.Adjust Check] shows
Tool Options.
(3) Contents of Tool Option
1) Tool Option1
- Inch
- Tool
- Maker
- Module Rev.
2) Tool Option2
- HDMI Count
- HDMI Switch IC
- Component Count
- S-Video
- RCA AV Count
- Scart Count
3) Tool Option3
- EMF(JPEG,MP3)
- Divx
- Bluetooth
- Digital Eye.
- Headphone
- OPC
- EPA
- e-Manual
- Audio Amp
- LED Type
- New E-Con
4) Tool Option4
- Clear QAM
- Local Dimming
- THX
- Digital Demod
- Analog Demod
- THX Media Director
7.3. Tool Option Setting
Tool Option4 should be set to TV ‘51840’, Media-Box ‘51872’ as
a manufacturing default.
By ‘IN-STOP’ to make shipping condition, it will be set to TV
‘19072’, Media-Box ‘19104’ automatically.
MODEL Display Tool opt1 Tool opt2 Tool opt3 Tool opt4
55LH95QD-CB TV 45955 4184 38 51840
Media-Box 45955 4440 51366 51872