LG 32LG40 Training Manual page 31

BAllAST TRANSFORMER wAvEFORMS
Warning: secondary is over 1.2Kv.
22.2V p/p 220kHz
T1/T2 Pin 1
Primary
Side
BAllAST hEAT SINkS
Be sure to replace all heat sink materials and insulators.
Heat Transfer Material
Protects the
Outputs
34V p/p 64.89kHz
T1/T2 Pin 6
Transformers Transformers
Insulator
Shiny Side
Down
(Conductive)
Insulator
CIRCUIT DeSCRIPTIONS
MCN1 "Ballast" to P203 "SMPS"
Pin Label Stby
1 VBL
2 VBL
3 VBL
4 VBL
5 VBL
6 Gnd
7 Gnd
8 Gnd
9 Gnd
10 Gnd_1 Gnd
11 BVR_A
12 On/Off
13 VBR_B
14 Gnd_2 Gnd
Alignment
Cut Out
Alignment Notch
Fall 2008 LCD Training Fall 2008 LCD Training
3
Run Diode
0V 24.52V OL
0V 24.52V OL
2
0V 24.52V OL
0V 24.52V OL
0V 24.52V OL
L
Gnd Gnd Gnd
Gnd Gnd Gnd
G
Gnd Gnd Gnd
Gnd Gnd Gnd
Gnd Gnd
4
0V 1.67V OL
0V 3.45V OL
0V 3.40V OL
0
Gnd Gnd
Notch
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