LG 32LX770M, Service Manual

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Only for training and service purposes
6.4.4. Check
6.4.4.1. Setting Procedure
(1) Setting JIG
1) Connect UTC-1000 Equipment to JIG device as a like left
picture
- Connection Line:
UTC-1000 TOP1 <--> Game port(RJ21)
-> TV-LINK CFG (Phone Jack)
UTC-1000 TOP2 -> JIG 11pin Connection
UTC-1000 RF1 <--> b-LAN RF IN
UTC-1000 LAN <--> PC LAN Port
6.4.4.2. Working procedure
(1) Connection
UTC-1000 LAN <--> PC LAN Port
UTC-1000 TOP1 <--> Game port(RJ21)
-> TV-LINK CFG (Phone Jack)
UTC-1000 RF1 <--> b-LAN RF IN
(2) Power on JIG : Switch on front of the JIG
(3) Test Start
UTC-1000 TOP2 <--> JIG 11pin Connection
(4) Checking b-LAN MAC Address
Check whether it is same their address numbers or not
between b-LAN Label and on the pc address numbers.
* Checking JIG contents
(1) Check whether displaying all “Pass” or not at the number
3.4.6.7.9 contents of UTC-1000 on the PC
(2) Check “Version 6.27” of the 1. b-LAN Application version
(3) Check whether it is same their address numbers or not
between b-LAN Label and
(4) MAC Address on the pc.
6.5. 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. AUDIO output check
7.1. Audio input condition
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal (0.4Vrms)
7.2. Specification
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.
8.2.2. 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
Item
Audio practical max Output, L/R
(Distortion=10% max Output)
Min
9.0
8.5
4.5
4.0
Typ
10.0
8.9
5.0
4.4
Max
12.0
9.9
6.0
5.4
Unit
W
Vrms
W
Vrms
Remark
(1) Measurement condition
- EQ/AVL/Clear Voice: Off
(2) Speaker (6Ω Impedance)
ALL MODEL LX770M-UA ONLY