LG 77EG9700 Service Manual page 32

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
PD_LOGIC
R2802-*1
0
PD_22V
R2802
EL_VDD_DETECT_22V
100K
PD_22V_ONSEMI
PD_LOGIC IC2850
PD_22V
R2800-*1
R2800 NCP803SN293
0 5.6K
1%
VCC RESET
3 2
1
EL_DET_22V
C2800
R2801 GND
0.1uF
1.3K 16V
1%
PD_22V_DIODES
IC2850-*1
APX803D29
VCC 3 2 RESET
1
GND
SW2800 +3.5V_ST
JS2235S
R2806
10K
OLED_DEBUG
1 6
R2803
0
OPT
2 5
EL_VDD_MONITOR
R2804 R2805
OLED_DEBUG
0 0
OPT OLED_MP
3 4
To monitor EL_VDD voltage.
R2807
0
EL_VDD_MONITOR POWER_DET_1
PWR_DET_MERGE
BSD-14Y-UD-028-HD
OLED
2014-03-11
ELVDD DETECT
LGE Internal Use Only