Service Manual
Page 16
...maintain the pin at least 4mA current for CRT/LCD Monitor applications. It can work on the inverter. And ADC conversion range is 3.3V. BRI ...ViewSonic Corporation Confidential - Analog Bandwidth, Full Power 250 MHz Channel to 3.3V power, all output pins can swing from PWM signal. It is a half bridge inverter...inverter which send to I901 is serial to convert DC input into AC output. The input stage consists of a tuning capacitor, coupling capacitor, transformer, push-pull MOSFET pair, and one resister is turn on 5V or 3.3V power supply system. Do Not Copy VE710s...
...maintain the pin at least 4mA current for CRT/LCD Monitor applications. It can work on the inverter. And ADC conversion range is 3.3V. BRI ...ViewSonic Corporation Confidential - Analog Bandwidth, Full Power 250 MHz Channel to 3.3V power, all output pins can swing from PWM signal. It is a half bridge inverter...inverter which send to I901 is serial to convert DC input into AC output. The input stage consists of a tuning capacitor, coupling capacitor, transformer, push-pull MOSFET pair, and one resister is turn on 5V or 3.3V power supply system. Do Not Copy VE710s...
Service Manual
Page 20
... uP I106 Yes Reset is OK ? Yes Change X101 Check I105 No Pin#70,71 data bus have reset pulse ? Do Not Copy VE710s/b-2 17 VA721 Yes No Check Reset circuit C173,D125 Check Keypad pcb is Ok ? Yes Check X101 Crystal No 14.318MHz is working ?... I105 MST8016A if HWRST Pin#32 have signal Change I105 LCD controller IC Yes Check panel Powers VLCD_3V3 VLCD_12V correct Yes Change LCD panel ViewSonic Corporation Confidential - Yes Check if No Inverter is Yes connect OK ? NO DISPLAY No Display Check Power region Dark Amber Check LED Color Check IO cable is Ok ?...
... uP I106 Yes Reset is OK ? Yes Change X101 Check I105 No Pin#70,71 data bus have reset pulse ? Do Not Copy VE710s/b-2 17 VA721 Yes No Check Reset circuit C173,D125 Check Keypad pcb is Ok ? Yes Check X101 Crystal No 14.318MHz is working ?... I105 MST8016A if HWRST Pin#32 have signal Change I105 LCD controller IC Yes Check panel Powers VLCD_3V3 VLCD_12V correct Yes Change LCD panel ViewSonic Corporation Confidential - Yes Check if No Inverter is Yes connect OK ? NO DISPLAY No Display Check Power region Dark Amber Check LED Color Check IO cable is Ok ?...
Service Manual
Page 26
...SMD IC,DIGITAL SMD IC,DIGITAL SMD XTAL,OSC XTAL,OSC COIL,CHOKE COIL,CHOKE COIL,CHOKE COIL,CHOKE XFORMER,POWR XFORMER INVERTER FERRITE CORE FERRITE CORE FERRITE CORE FERRITE CORE BEAD,HI-IMPEDANCE BEAT,HI-CURRENT BEAD,HI-IMPEDANCE SWITCH,TACT CONNECTOR CONNECTOR CONNECTOR... P101 1 P102 1 P901 RA P902 RA 2 P901 RB P902 RB 2 S802 RB S803 RB 2 S802 RA S803 RA 2 ViewSonic Corporation Confidential - Do Not Copy VE710s/b-2 23 VA721 VE710b-2 BOM LIST Item ViewSonic P/N 149 E-Q-0402-0555 150 E-Q-0402-0718 151 #N/A 152 #N/A 153 E-PC-0411-0082 154 E-PC-0411-0083 155 #N/A 156 ...
...SMD IC,DIGITAL SMD IC,DIGITAL SMD XTAL,OSC XTAL,OSC COIL,CHOKE COIL,CHOKE COIL,CHOKE COIL,CHOKE XFORMER,POWR XFORMER INVERTER FERRITE CORE FERRITE CORE FERRITE CORE FERRITE CORE BEAD,HI-IMPEDANCE BEAT,HI-CURRENT BEAD,HI-IMPEDANCE SWITCH,TACT CONNECTOR CONNECTOR CONNECTOR... P101 1 P102 1 P901 RA P902 RA 2 P901 RB P902 RB 2 S802 RB S803 RB 2 S802 RA S803 RA 2 ViewSonic Corporation Confidential - Do Not Copy VE710s/b-2 23 VA721 VE710b-2 BOM LIST Item ViewSonic P/N 149 E-Q-0402-0555 150 E-Q-0402-0718 151 #N/A 152 #N/A 153 E-PC-0411-0082 154 E-PC-0411-0083 155 #N/A 156 ...
Service Manual
Page 30
...DIGITAL SMD XTAL,OSC XTAL,OSC COIL,CHOKE COIL,CHOKE COIL,CHOKE COIL,CHOKE XFORMER,POWR XFORMER INVERTER FERRITE CORE FERRITE CORE FERRITE CORE FERRITE CORE BEAD,HI-IMPEDANCE BEAT,HI-CURRENT BEAD,HI-IMPEDANCE... S705 Q'ty 2 1 2 2 2 1 4 1 1 1 2 2 1 1 4 1 1 4 4 1 1 4 1 1 1 1 1 1 8 5 1 1 4 9 14 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 2 1 1 1 1 2 4 5 5 ViewSonic Corporation Confidential - Do Not Copy VE710s/b-2 27 VA721 VE710s-2 BOM LIST Item ViewSonic P/N 146 #N/A 147 E-Q-0402-0839 148 E-Q-0402-0428 149 E-Q-0402-0555 150 E-Q-0402-0718 151 #N/A 152 #N/A 153 E-PC-0411-0082 154...
...DIGITAL SMD XTAL,OSC XTAL,OSC COIL,CHOKE COIL,CHOKE COIL,CHOKE COIL,CHOKE XFORMER,POWR XFORMER INVERTER FERRITE CORE FERRITE CORE FERRITE CORE FERRITE CORE BEAD,HI-IMPEDANCE BEAT,HI-CURRENT BEAD,HI-IMPEDANCE... S705 Q'ty 2 1 2 2 2 1 4 1 1 1 2 2 1 1 4 1 1 4 4 1 1 4 1 1 1 1 1 1 8 5 1 1 4 9 14 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 2 1 1 1 1 2 4 5 5 ViewSonic Corporation Confidential - Do Not Copy VE710s/b-2 27 VA721 VE710s-2 BOM LIST Item ViewSonic P/N 146 #N/A 147 E-Q-0402-0839 148 E-Q-0402-0428 149 E-Q-0402-0555 150 E-Q-0402-0718 151 #N/A 152 #N/A 153 E-PC-0411-0082 154...
Service Manual
Page 35
Do Not Copy VE710s/b-2 32 VA721 VA721 BOM Item ViewSonic P/N 196 #N/A 197 #N/A 198 #N/A 199 E-L-0407-1533 200 #N/A 201 #N/A 202 E-L-0407-0976 203 E-L-0407-0013 204 E-L-0407-1234 205 #N/A 206 #N/A 207 #N/A 208 E-L-0407-1535 209 #N/A ... 2427409121 2428106050 228 M-WR-0828-0455 2428106075 229 M-WR-0828-0450 2428106100 COIL,CHOKE COIL,CHOKE COIL,CHOKE COIL,CHOKE XFORMER,POWR XFORMER INVERTER FERRITE CORE FERRITE CORE FERRITE CORE FERRITE CORE BEAD,HI-IMPEDANCE BEAT,HI-CURRENT BEAD,HI-IMPEDANCE SWITCH,TACT CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR ...
Do Not Copy VE710s/b-2 32 VA721 VA721 BOM Item ViewSonic P/N 196 #N/A 197 #N/A 198 #N/A 199 E-L-0407-1533 200 #N/A 201 #N/A 202 E-L-0407-0976 203 E-L-0407-0013 204 E-L-0407-1234 205 #N/A 206 #N/A 207 #N/A 208 E-L-0407-1535 209 #N/A ... 2427409121 2428106050 228 M-WR-0828-0455 2428106075 229 M-WR-0828-0450 2428106100 COIL,CHOKE COIL,CHOKE COIL,CHOKE COIL,CHOKE XFORMER,POWR XFORMER INVERTER FERRITE CORE FERRITE CORE FERRITE CORE FERRITE CORE BEAD,HI-IMPEDANCE BEAT,HI-CURRENT BEAD,HI-IMPEDANCE SWITCH,TACT CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR ...
Service Manual
Page 45
10.6. Inverter VCC12V F901 7A 5V Brightness R903 10 (5V) NC(3.3V) R906 10K 1%(3.3V) 27K 1%(5V) R905 22K 1% R907 18K 1% I902 78L05(3.3V) NC(5V) IN ... 1N4148 P902 4H 3H 1L R927 392 1% R931 1M C924 0.1uF D911 1N4148 D912 1N4148 R926 5.1K D909 1N4148 D910 1N4148 C919 0.047uF R928 221 1% ViewSonic Corporation Confidential - Do Not Copy VE710s/b-2 42 VA721
10.6. Inverter VCC12V F901 7A 5V Brightness R903 10 (5V) NC(3.3V) R906 10K 1%(3.3V) 27K 1%(5V) R905 22K 1% R907 18K 1% I902 78L05(3.3V) NC(5V) IN ... 1N4148 P902 4H 3H 1L R927 392 1% R931 1M C924 0.1uF D911 1N4148 D912 1N4148 R926 5.1K D909 1N4148 D910 1N4148 C919 0.047uF R928 221 1% ViewSonic Corporation Confidential - Do Not Copy VE710s/b-2 42 VA721