Panasonic TX-28XD4F Service Manual page 16

CONTROL BLOCK DIAGRAM
E - BOARD
H - BOARD
IC3401
H3 E63
VIDEO
SWITCHING
3 1
5 4
Q3401
PROCESSOR
LOCAL
KEYS
SWITCH
MATRIX
N - BOARD
N1 E19
IC1071
4 4
REMOTE
CONTROL
RECEIVER
8 8
D1071 Q1072
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TUNER
SCL
SDA
IC2101
AUDIO
SDA 1
8
SCL 1
7
48
VPROT
71
Q451
KEYSCAN
60
ON/OFF
52
PROCESSOR
Q853 Q854
R.C.
74
Q1051
L.E.D.
81
PROT 1
75
Q851 Q856
SYNOPTIQUE DE COMMANDE
POS/NEG
L/L'
49 83 82
IC1101
SCL 2
MICRO
50
SDA 2
51
SLOW 2
59
OUT
72
Q1106
IN
73
Q1104
55 58
IC601
4
VIDEO
PROCESSOR
3
IC1103
6
EAROM
5
Q1105 Q1107
Q3006
Q3007
SERVICE / TEST
E18
6
SDA 1
5
SCL 1
4
SDA 2
3
SCL 2
AV2
8
SLOW 2
10
AV LINK
AV1
8
SLOW 1
10
SCL 1
12
SDA 1