LG 49UF690T-TC Service Manual page 16

4.7. HDMI ARC Function Inspection
(1) Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
(2) Test method
1) Insert the HDMI Cable to the HDMI ARC port from the
master equipment. (HDMI 2)
2) Check the sound from the TV Set.
3) Check the Sound from the Speaker or using AV & Optic
TEST program (It's connected to MSHG-600)
4.8. Ship-out mode check (In-stop)
- After final inspection, press In-Stop key of the Adjustment
remote control and check that the unit goes to Stand-by
mode.
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Only for training and service purposes
5. GND and Internal Pressure check
5.1. Method
(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.
5.2. Checkpoint
▪ TEST voltage
- GND: 1.5 KV / min at 100 mA
- SIGNAL: 3 KV / min at 100 mA
▪ 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 0.5 mArms
6. Audio
No. Item
Audio practical max
1 Output, L/R (Distortion
=10% max Output)
Speaker
2
(6 Ω Impedance)
Measurement condition:
(1) RF input: Mono, 1 KHz sine wave signal, 100 % Modulation
(2) CVBS, Component: 1 KHz sine wave signal 0.5 Vrms
- 16 -
Min Typ Max Unit
EQ Off
10 12 W
AVL Off
8.10 10.8 Vrms
Clear Voice Off
EQ On
10 12 W AVL On
Clear Voice On
LGE Internal Use Only