Sylvania 6620LCT A - System Control Block Diagram

7-1
BLOCK DIAGRAMS
System Control Block Diagram
L3219BLS
FUNCTION CBA
IC333 (TV MICRO CONTROLLER)
3
21
KEY-IN-122
CN104
CLN104
KEY SWITCH
11
KEY-IN-1
REMOTE
RESET
RESET
IC151
AL+3.3V(D)
42 43
X161 27MHz
XIN
XOUT
MAIN CBALCD MAIN CBA UNIT
4
KEY-IN-211
KEY-IN-2
22 18 17
BACKLIGHT-SW
19 5
BACKLIGHT-ADJ
21 3
P-ON-H16 8 VOLUME15 9 AUDIO-MUTE
13 11
INPUT-012 12 INPUT-111 13 S-SW717 SCL618 SDA519
BACKLIGHT-SW
BACKLIGHT-ADJ
P-ON-H
VOLUME
AUDIO-MUTE
SDA SCL
INPUT-0 INPUT-1
S-SW
SCL SDA
20 35 31 40 19 32 41
TO POWER SUPPLY BLOCK DIAGRAM TO IF/VIDEO BLOCK DIAGRAM TO AUDIO BLOCK DIAGRAM
BACKLIGHT-SW
BACKLIGHT-ADJ
P-ON-H
VOLUME
AUDIO-MUTE
INPUT-0 INPUT-1
S-SW
SCL
SDA
TO LCD BACKLIGHT BLOCK DIAGRAM
CN102B
CN102A
IC171 (MEMORY)
SCL
6
SDA
5
7
WP
Q131
3.3V<-->5V CONVERTER
23
BUS-OPEN
12
P-25V-ON
P-25V-ON
TO POWER SUPPLY BLOCK DIAGRAM
KEY SWITCH
IR SENSOR CBA
CLN105
REMOTE
SENSOR
RCV102
CN105
REMOTE33
INVERTER CBA
BACKLIGHT-ADJ
99
CN411
CLN411
BACKLIGHT-SW
88
P-ON-H11 11
P-ON-H
AFT-IN10 145AFT-IN
80
TUNERCLK
Q301
BUFFER
AFT-IN
CN103B CN103A
P-ON-H
FSC123
FSC