Videocon Mstar MST719, Mstar MST719DU, Руководство по обслуживанию

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MST719 Service Manual
28
CN21
(POWER AND Inverter CONN )
NO. Symbol Function Electronic parameter
1 +5V POWER 4.75~5.25V
2 +5V POWER 4.75~5.25V
3 +5V Sb POWER 4.75~5.25V
4 STB ON/OFF On
≈
4.5V Off=0~0.6V
5 GND
6 GND
7 GND
8 +12V POWER 10.8~13.2V
9 +12V POWER 10.8~13.2V
10 BLK_ADJ Back lamp
brightness adjust (0.07~4.4V) 0.07V= Max. brightness
11 BLK_EN Back lamp
ON/OFF
ON: ≈ 4.3V; OFF:0~0.8V
CN11
( AUDIO OUTPUT CONN )
NO. Symbol Function Electronic parameter
1 L_OUT+ L_OUT positive
2 L_OUT- L_OUT negative
3 R_OUT- R_OUT negative
4 R_OUT+ R_OUT positive
CN18
( Key CONN )
NO.
Symbol Function
Electronic parameter
1 KEY0 ADC Volt. input 0.03-1.6V
2 KEY1 ADC Volt. input 0.03-1.6V
3 GND 0V
CN19
( LED & IR CONN )
NO.
Symbol
Function Electronic parameter
1 RMT IR input Vpp ： 5V
2 VCC 5V_STB +5V
3 GND 0V
4 LED_Control ≤ 3.5V
CN16
( G-probe CONN )
NO.
Symbol
Function Electronic parameter
1 GND
2 TXD
3 RXD
4 5V_STB +5V