Emerson LC195EM82 - Page 27

7-7
LCD Backlight Block Diagram
A81N0BLLB
CURRENT CONTROL SWITCH
Q408
Q410 Q409
Q407
Q402
Q406
Q405
Q404
Q403
Q401
Q411
CN401
LCD MODULE
BACK LIGHT BACK LIGHT
1 2
CN402
1 2
INV+22V OVER CURR. DET
TO POWER SUPPLY BLOCK DIAGRAM
TO SYSTEM CONTROL BLOCK DIAGRAM
MAIN CBA
OVER VOLTAGE PROTECTOR
OVER CURRENT PROTECTOR
T401
12 14 13 11
9 4 5
10
7 2 1 6 8 3
+35V BACKLIGHT-ADJ
SW+22V
BACKLIGHT-SW
PROTECT-5
OVER VOLTAGE PROTECTOR
Q412
OVER CURRENT PROTECTOR