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LGE Internal Use Only
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
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
Measurement condition:
(1) RF input: Mono, 1 KHz sine wave signal, 100 % Modulation
(2) CVBS, Component: 1 KHz sine wave signal 0.5 Vrms
7. USB S/W Download
(option, Service only)
(1) Put the USB Stick to the USB socket.
(2) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is
Lower, it didn’t work.
But your downloaded version is Higher, USB data is
automatically detecting (Download Version High & Power
only mode, Set is automatically Download)
(3) Show the message “Copying files from memory”.
(4) Updating is starting.
(5) Updating completed, the TV will restart automatically
(6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have,
TV can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* After downloading, have to adjust Tool Option again.
(1) Push "IN-START" key in service remote control.
(2) Select "Tool Option 1" and push "OK" key.
(3) Punch in the number. (Each model has their number)
No.
Item
Typ Max Unit
1
Audio practical max Output,
L/R (Distortion=10% max
Output)
10
12
W
EQ Off
AVL Off
Clear Voice Off
8.10 10.8 Vrms
2 Speaker
(6/8Ω Impedance)
10
12
W
EQ On
AVL On
Clear Voice On
Summary of Contents for 49UH750 Series
Page 88: ......
