32LV3400-UA (CHASSIS:LA01U) - LG TV Service Manual (repair manual). Page 13

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6. GND and Hi-pot Test 
6.1. Method
6.1.1. GND & HI-POT auto-check preparation  
(1) Check the POWER CABLE and SIGNAL CABE
insertion condition 
6.1.2. 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. 
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
NEUTRAL
• LEAKAGE CURRENT: At 0.5mArms
7. EYE-Q Check
Step 1) Turn on the TV. 
Step 2) Press EYE button in adjust remote control. 
Step 3) Stay 6 seconds with Eye Q sensor hidden located on
the front of the set. 
Step 4) Check the “Sensor Data” on the screen and check
whether the value is lower thanafter 6 seconds, the
value does not go below 10, Eye Q sensor is not
working properly. Then, change the sensor. 
Step 5) Remove hand from the Eye Q II sensor and stay for 6
seconds. 
Step 6) Check whether the “Back Light (xxx)” value has risen
on the screen. If after 6 seconds and the value still
does not go high, the eye Q II sensor is not working
properly. Replace the sensor. 
 
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<Step4>
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