LG 42LA86 Series Service Manual page 21

4.11. 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 (HDMI1)
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)
* Remark: Inspect in Power Only Mode and check SW
version in a master equipment
4.12. Camera Function Inspection
(1) Objective : To check how it connects between Camera and
PCBA normally, and their Function
(2) Test Method : This Inspection is available only Power-Only
Status.
1) Slide Camera Up.
2) Camera's Preview picture apeears on TV Set.
3) Slide Camera Down.
<Slide Up Status>
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Only for training and service purposes
4.13. Ship-out mode check(In-stop)
4.14. Tool Option selection
4.15. GND and Internal Pressure check
4.15.1. Method
4.15.2. Checkpoint
5. Audio
No.
<Slide Down Status>
- 21 -
▪ After final inspection, press "IN-STOP" key of the Adjustment
remote control and check that the unit goes to Stand-by
mode.
- Method: Press ADJ key on the Adj. R/C, then select Tool option.
(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.
▪ 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
Item Min Typ
Audio practical 9.0 10.0 12.0
max Output, L/R
1.
(Distortion=10%
8.5 8.9
max Output)
Speaker (8 Ω
2. 10.0 15.0
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
(3) RGB PC: 1 KHz sine wave signal 0.7 Vrms
Max Unit Remark
W
Measurement condition
9.8 Vrms Auto Volume :Off
Audio EQ : Off
Clear Voice : Off
W
Virtual Surround:Off
LGE Internal Use Only