DOWNLOAD LG 50PZ950-ZA (CHASSIS:PD12A) Service Manual ↓ Size: 12.41 MB | Pages: 80 in PDF or view online for FREE

ⓒ LG Electronics. Inc.2010

전자 - 6-2

▣ Check Power off History by using SVC Remote controller

Press “In-start” →Press” 0000” → Select “Power Off History” → Pop up Module Rom ver.

Appear Power off history 5ea.

(1 is the latest history)

Power off by Remote control

Mechanical power switch off

After turn on by OnTimer, There is no operation 
for 2hours

In case that there is no signal for 15minutes

ⓒ LG Electronics. Inc.2010

Speaker

Jack for Speaker connection

1.Check whether speaker jack was inserted properly on Main B/D side & speaker side or not.
2. Check whether speaker cable have problem (disconnection wire) or not.

전자 - 6-2

ⓒ LG Electronics. Inc.2010

전자 - 6-2

1.Check connector was inserted properly 

on Main board  and IR board. 

2. Check +3.3V 

ST 

Voltage at Pin10

3. Check whether appear voltage on multi meter

when operate remote control.

※ Test Condition for case 3

→ Check Point: Pin 1( IR)
→ TV: power on status
→ Multi meter: Select DC 10V

▣ Checking method

-

LED_Power_On

TOUCH_Ver_CHECK

BLUE_LED_ON

IR

GND

KEY1
KEY2

LED-RED

GND

SCL

SDA

+3.3V_ST

+3.3V_Normal/ 

+5V_MULTI

3.3V Multi

-

ⓒ LG Electronics. Inc.2010

전자 - 6-2

1.Check connector was inserted properly 

on Main board  and local switch board. 

[ If mechanical switch off status, Key-on is high(3.3v) ]

2. Check whether appear voltage on multi meter

when operate Local switch.

※ Test Condition for case 3

→ Check Point: Pin 3,4( Key1,Key2)
→ TV: power on status
→ Multi meter: Select DC 10V

CH+

CH-

Vol+

Vol-

OK

HOME

Input

-

LED_Power_On

TOUCH_Ver_CHECK

BLUE_LED_ON

IR

GND

KEY1
KEY2

LED-RED

GND

SCL

SDA

+3.3V_ST

+3.3V_Normal/ 

+5V_MULTI

3.3V Multi

-