LG 42LP860H (CHASSIS:LD33B) Service Manual ▷ View online
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4.4. Wi-Fi Test
Step 1) Turn on TV
Step 2) Select Network Connection option in Network Menu.
Instart menu -> Menu -> Network Setup (Network
Setting>Press OK)
Step 3) Select Start Connection button in Network Connection.
Step 4) If the system finds any AP like blow PIC, it is working
well.
4.5. HDMI ARC Function Inspection
4.5.1. Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
4.5.2. 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
4.6. Local Dimming Function Check
Step 1) Turn on TV.
Step 2) Press “TILT” key on the Adj. R/C.
Step 3) At the Local Dimming mode, module Edge Backlight
moving right to left Back light of IOP module moving.
Step 4) Confirm the Local Dimming mode.
Step 5) Press "exit" key.
4.7. Magic Motion Remote control test
(1) Equipment : RF Remote control for test, IR-KEY-Code
Remote control for test
(2) You must confirm the battery power of RF-Remote control
before test.(recommend that change the battery per every lot)
(3) Sequence (test)
1) if you select the "Start(Wheel)" key on the Adjustment
remote control, you can pairing with the TV SET.
2) You can check the cursor on the TV Screen, when select
the "Wheel" key on the Adjustment remote control.
3) You must remove the pairing with the TV Set by select
"Mute" key on the Adjustment remote control.
Local Dimming Demo
(Edge LED Model)
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5. Check Commercial features
5.1. External SPK Out
5.1.1. Equipment & Condition
▪ Jig (Speaker out JIG) or Oscilloscope
5.1.2. Check the speaker out
1) Connect the External Speaker : check the sound
Connect oscilloscope, you can see this waveform.
5.2. IR Out and DC Power Outlet (5V/12V)
(1) Equipment & Condition
▪ Jig (commercial check JIG)
▪ Special 232C Cable for commercial check Jig
▪ Power only mode
▪ PCB mode (instart menu -> menu -> Configuration Setup
-> RS232 DC Power Outlet )
(2) Check the power out & IR out - commercial check jig
1) Connect each other RS232c port on the Commercial
Check JIG
2) Press RED Color Button on SVC Remote-control in
power only mode (or PCB mode)
3) Check the LED of jig board
- +5 V / +12 V LED (OK condition: Turn On)
- IR LED (OK condition: blinking)
(3) Check the power out & IR out - mini jig
1) Connect mini jig on RS232c port
2) Press RED Color Button on SVC Remote control in
power only mode (or PCB mode)
3) Check the LED of mini jig
(4) Pro:Idiom Check
1) Connect the RF Cable
2) Turn to the Pro:Idiom channel (No. 333)
3) Check the video & sound
** Only displayed at “POWER ONLY” mode
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
Mode info.
Commercial Feature
Name
inch
IR
Out
DC Power
Out (5V/ 12V)
Ext
SPK
Out
CLOCK Pro:Idiom
LP860H-ZA 42/47/55
O
O
O
X
O
No.
Item
Min
Typ
Max
Unit
Remark
1.
Audio practical
max Output, L/R
(Distortion=10%
max Output)
9
10
12
W
EQ Off
AVL Off
Clear Voice Off
8.10
10.8
Vrms
2.
Speaker (8 Ω
Impedance)
9
10
12
W
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7. GND and HI-POT Test
7.1. Tool Option selection
▪ Method: Press Adj. key on the Adj. R/C, then select Tool
option.
7.1. Ship-out mode check (In-stop)
▪ After final inspection, press In-Stop key of the Adj. R/C and
check that the unit goes to Stand-by mode.
7.2 GND and Hi-pot auto-check
7.2.1 Method
(1) GND & Hi-pot auto-check preparation
- Check that Power Cord is fully inserted to the SET. (If
loose, re-insert)
(2) Perform GND & Hi-pot 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.
7.2.2. 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
- Hi-pot TEST = POWER CORD GND & LIVE & NEUTRAL
▪ LEAKAGE CURRENT: At 0.5 mArms
8. USB S/W Download(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)
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TROUBLESHOOTING GUIDE
1. Power-Up Boot Fail Trouble Shooting guide
2. No OSD Trouble Shooting guide
Check P2401 All
Voltage Level (3.5V, 12V, 24V).
Check P2401 All
Voltage Level (3.5V, 12V, 24V).
Check Q2407 output
Voltage(12V).
Check IC8700 RESET pin.
Check LVDS Cable.
Check X8701 Clock
10MHz.
Check IC8700 IIC
Communication status.
Check IR input state of IC8700
13pin.
Re-download NEC Micom
Check LCD Module
Control board
Check power connector and
RL_ON signal OK?
Check power connector and
RL_ON signal OK?
Check Q2407 application circuit
Or replace Q2407.
Check switch SW8700.
Replace Cable.
Check X8701 application circuit
or Replace X8701.
Check IIC line or replace
IC8700.
Check IR board.
Replace Power Board.
Replace Power Board.
N
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
N
N
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