LG 32LY560M, Service Manual

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Only for training and service purposes
6.3. Option selection per country
6.3.1. Overview
(1) Tool option selection is only done for models in Non-USA
North America due to rating
(2) Applied model : LA4AV/W Chassis is applied in USA
6.3.2. Method
(1) Press ADJ key on the Adj. R/C, then select Country Group
Menu.
(2) Depending on destination, select KR or US, then on the
lower Country option, select US, CA, MX. Selection is done
using +, - KEY
7. GND and HI-POT Test
7.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
7.2. 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
7.3. Checkpoint
(1) Test voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
(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 0.5mArms
8. AUDIO output check
8.1. Audio input condition
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal (0.4Vrms)
(3) RGB PC: 1KHz sine wave signal (0.7Vrms)
8.2. Specification
No Item Min Typ Max Unit Remark
1 Audio practi-
cal max
Output, L/R
(Distor-
tion=10%
max Output)
9.0 10.0 12 W Measure-
ment condi-
tion
EQ Off
AVL Off
Clear Voice
Off
DRC opera-
tion under
12W
(42LY series)
8.5 8.9 9.8 Vrms
4.5 5 6 W 22/28LY
Series
6 6.4 6.7 Vrms
2 Speaker
(8Ω Imped -
ance)
10.0 14.0 W (1) Measure-
ment
condition
- EQ/AVL/
Clear
Voice:
Off
32/42LY
Series
5 7 W 22/28LY
Series
▪Measurement condition:
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal 0.4Vrms
(3) RGB PC: 1KHz sine wave signal 0.7Vrms
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 staring.