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LGE Internal Use Only
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.9. GND and HI-POT Testing
5.9.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
5.9.2. GND & HI-POT auto-check
(1) Pallet moves in the station. (POWER CORD / AV CORD is
tightly inserted)
(2) Connect the AV JACK Tester
(3) Controller (GWS103-4) on.
(4) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next process
automatically
5.9.3. Check Point
(1) Test voltage
3 Poles : GND: 1.5KV/min at 100mA / SIGNAL: 3KV/min at
100mA
(2) TEST time: 1 second
(3) TEST POINT
3 Poles : GND Test = POWER CORD GND and SIGNAL
CABLE GND.
Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
5.10. Motion Remote controller Inspection
5.10.1. Equipment
Motion remote controller for test, IR-KEY-CODE remote
controller for test
Check battery before test. (Recommend : Change battery for
every Lot.)
5.10.2. Process
1) If you select the ‘start key(wheel)’ on the controller, you can
pairing with the TV SET.
2) You can check the cursor on the TV Screen, when select the
‘Wheel Key’ on the controller .
3) You must remove the pairing with the TV Set by select ‘Back
+ Home Key’ on the controller.
5.11. Audio
No
Item
Min Typ Max
Unit
Remark
1
Audio practical
max Output, L/R
(Distortion=10%
max Output)
9.0
10.0 12.0 W
Measure-
ment
condition
(TBD)
8.5
8.9
9.8
Vrms
2
Speaker (8Ω
Impedance)
10.0 15.0 W
Measure-
ment
condition
(TBD)
▪ Measurement condition:
(1) RF input: Mono, 1 KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1 KHz sine wave signal 0.4Vrms
(3) RGB PC: 1 KHz sine wave signal 0.7Vrms
5.12. 3D Function test
5.12.1. Equipment
Pattern Generator MSPG-3233, HDMI mode 37, pattern No. 81
5.12.2. Equipment
1) Connect HDMI (HDMI mode 371, Pattern No. 81)
2) Insert 3D Mode, Select side by side mode.
3) Without 3D-glasses, Like below figure.
4) With 3D left-glass, Like below figure. (Center is RED)
5) With 3Dright-glass, Like below figure.(Center is Blue)
Summary of Contents for 55EA970T
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