KAWA LCT37AD, Service Manual

Page: 87 / 129

Product Specification
LC370WX1
Liquid Crystal Display
3-2-2. Backlight Inverter
Input Connector
-Inverter Connector : S12B-PH-SM3(manufactured by JST) or Equivalent
-Mating Connector : PHR-12 or Equivalent
Status Connector
-Inverter Connector : 20022WR-02A00(manufactured by Yeon Ho co., Korea) or Equivalent
-Mating Connector : 20022HR-02S00(manufactured by Yeon Ho co., Korea) or Equivalent
Table 6. INVERTER CONNECTOR PIN CONFIGULATION
Note : 1. GND should be connected to the LCD module’s metal frame.
2. Minimum Brightness : V
BR
= 0.0V
Maximum Brightness : V
BR
= 3.3V
3. V
ON
: 2.5 ~ 5.0V
V
OFF
: -0.3 ~ 0.5V
PCB
1 2 3 12 11
Top
Bottom
Component side
Input connector
1
1
2
Status connector
PCB
1 2 3 12 11
Top
Bottom
Component side
Input connector
1
1
2
Status connector
GND POWER GND GND 1
Option Pin(Lamp Open Status Detection)
3
Don’t care On/Off
0V ~ 5.0V
On/Off
12
Status
Upper 3.0V(Normal),
Under 0.5V(Abnormal)
Status
2
Don’t care
GND
GND
GND
GND
GND
V
BL
V
BL
V
BL
V
BL
V
BL
Slave
V
BR
GND
GND
GND
GND
GND
V
BL
V
BL
V
BL
V
BL
V
BL
Master
2
POWER GND GND 7
POWER GND GND
8
1
0V ~ 3.3V
V
BR
11
POWER GND
GND
10
POWER GND GND
9
POWER GND
GND
6
Power 24.0V V
BL
5
Power 24.0V V
BL
4
Power 24.0V V
BL
3
Power 24.0V V
BL
2
Power 24.0V V
BL
1
Note Description Symbol Pin No
85／127