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LG 28LB515A Service Manual page 10

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5. Tool Option setting & Inspection
per countries
(1) Press 'IN START' key at Factory Service remote control.
(2) Select 'Tool Option 1'.
(3) Punch in the number and press 'OK'. (Each of models has
their number)
(4) Correct 'Tool Option2' ~ 'Tool Option5'.
(5) Completed adjusting Tool option.
6. Ship-out mode check (In-stop)
▪ After final inspection, press In-Stop key of the Adjustemnt
Remote Control and check that the unit goes to Stand-by
mode.
7. AUDIO output check
7.1. Audio input condition
(1) RF input: Mono, 1 KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1 KHz sine wave signal (0.4 Vrms)
7.2. Specification
Item
Min
Typ
Max
Audio practical
max Output, L/R
4.5
5.0
(Distortion=10%
max Output)
8. GND and HI-POT Test
8.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
8.2. 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.
8.3. Checkpoint
(1) Test voltage
- GND: 1.5 KV / min at 100 mA
- SIGNAL: 3 KV / min at 100 mA
(2) TEST time: 1 second
(3) TEST POINT
- GND Test = POWER CORD GND and SIGNAL CABLE
GND.
- Hi-pot Test = POWER CORD GND and LIVE &
NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5 mArms
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Unit
Remark
(1) Measurement condition
W
6.0
- EQ/AVL/Clear Voice: Off
Vrms
(2) Speaker (8 Ω Impedance)
9. USB S/W Download
* optional, 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
than that of TV set, it didn't work.
Otherwise USB data is automatically detected.
(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.
* 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.)
- 10 -
LGE Internal Use Only

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