Panasonic TH-42PX20U-P Service Manual page 223

14.19. H-Board (1 of 2) Schematic Diagram
H-BOARD TNPA2817(1/2)
!
A
B
C
D
E
F
TH-42PX20U-P
H-BOARD (1 of 2) Schematic Diagram
1
(NON USE)
JK3001
K1U824A00002
JK3002
VIDEOIN
K2HA306A0024
PROG OUT
3 2
Y1 V1
4 1
R3016
R3015 180K
180K
R3011
C3045
75
1500p
1% C3043
1500p
C3059
16V
470
R3014
10K
VIDEO1
PROG. OUT
2
TO
TB-BOARD
(T21)
TV2 TVA2 GND GND GND GND SC2 SD2
TV2
VIDEOIN
Y2 V2
R3021
180K
R3022
180K
R3001
180K
R3017
75
1%
C3031
1500p
C3051
C3049
1500p 1500p
VIDEO2
3
TO
TB-BOARD
(T22)
+5V 30 9V GND GND GND AFC2 GND
GND
R4249
2200
R4252
100
TP4215
LTV1
RTV1
TP4216
TP4224 TP4225
JK3003
K2HA510A0002 K2HA510A
COMP1 IN
DTV1
T3001
G0B250D00001
Pr Pb Y
R3002
R3005
180K 180K
C3033
C3035
1500p
1500p
DTV1
4
81
Max25mA
C4251
16V 0.1[
C4252
50V 10/
+
C4250
0.47
C4253
0.047[KB
R4251
100
R4253
1K
R4250
1K
JK300
COMP2
Pr
R3007
180K
C3037
1500p
DTV2
5