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LG 55EF950 Series Service Manual page 25

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8.6. HDMI ARC Function Inspection
8.6.1. Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
8.6.2. 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)
9. GND and Internal Pressure check
9.1. 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.
9.2. 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
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
10. Audio
No
Item
Audio practical max
Output, L/R
1
(Distortion=10% max
Output)
Speaker
2
(8 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
11. Preset CH information
Area
System
MA
PAL
B
(WR)
PAL
G
PAL
I
SECAM
D
PAL
B
PAL
G
PAL
I
PAL
I
PAL
G
SECAM
L
SECAM
L
PAL
G
SECAM
D
SECAM
D
11.1. Etc
Chassis Module Assembly
Front Module Assembly
Factory incoming
Final Assembly
Ship-Out
- 25 -
Min
Typ
Max
Unit
Remark
10
12
W
EQ Off
AVL Off
8.10 10.8 Vrms
Clear Voice Off
EQ On
10
12
W
AVL On
Clear Voice On
Band
CH
Frequency
V/UHF
E5
C 05
175.25
V/UHF
E51
C 51
711.25
V/UHF
I41
C 41
631.25
V/UHF
R5
C 05
93.25
V/UHF
E4
C 04
62.25
V/UHF
E31
C 31
551.25
V/UHF
I21
C 21
471.25
V/UHF
I69
C 69
855.25
V/UHF
E48
C 48
687.25
V/UHF
L4
C 08
200.00
V/UHF
L45
C 45
663.25
V/UHF
E25
C 25
503.25
V/UHF
R7
C 07
183.25
V/UHF
R7
C 07
189.25
Power Status
Main B/D Ship-
AC Swithch
ping Condition
condtion
ON
N/A
N/A
OFF
ON
OFF
ON
ON
OFF
ON
LGE Internal Use Only

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