LG XH-T5020X Service Manual page 11

2. FRONT CIRCUIT (1/2)
Power on.
YES
Red LED turn off?
YES
Is the Digitron on correctly?
YES
Check if all buttons
are ok?
YES
Check if the
remote control is ok?
YES
Front B/D ok.
*1 : When it is needed to reconnected FFC cable into PN301
Short 1pin of PN103 with 18pin of CN901 in amp part
*2 : PN603 Pins.
PIN1 : -35 VKK
PIN2 : -30 FL+
PIN3 : -33 FL-
PIN7 : +5V
PIN13 : +5VA
LGE Internal Use Only
NO
Check if PN301 is ok?
NO
Check if the front
power is ok?(*2)
NO
1
NO
2
Check if DIS301 is ok?
2-2
NO
YES
NO
YES
NO
Copyright © 2007 LG Electronics. Inc. All right reserved.
Reconnect it.
(Refer to notice *1)
Refer to smps part.
Check pattern and
resoldering
Only for training and service purposes