ViewSonic VA720 Service Manual - Page 22

10.SCHEMATIC DIAGRAMS D 5 4 3 2 1 +3.3V_DVDD FB1 60/100M(0805) REV:D remodify 100uF 3.3V_DVDD REV:A改至REV:B RN4.6->RN7.7;RN4.5->RN7.6;RN7.6->RN7.5 ;RN7.5->RN4.8;RN4.8->RN4.7;RN4.7->RN4.6;RN4.5->空腳位. +5V +5V REV:A改至REV:B GPIO 7,8 LED亮燈問題 +5V +12V JP1 3.3V 12V於JP1 +3.3V_DVDD NC 1 2 3 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 R91 10k GPIO 7 PNL_VCC 100uF/DIP0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 220pF RN1 1 4x10K 8 R92 10k GPIO 8 U1 R2 N GND FB30 60/100M(0805) 3.3V_AVD REV:D remodify 100uF 3.3V_AVDD 2 3 4 RN2 1 2 3 4 7 6 5 PBIAS 8 4x10KGPIO 6 7 6 GPIO 10 5 PPWR GPIO 9 ROM_WEn REV:D remodify TWO SOURCE 3.3V_DVDD 2.5V_VDD FB2 70/100M(1812) C13 220uF 4.7K PNLV PNLCTRL 1 2 3 4 S1 S2 S3 G1 D1 D2 D3 D4 8 7 6 5 SI4433ADY 100uF/DIP C11 C12 0.1uF 200 R1 C14 100uF/DIP C15 C16 C17 0.1uF 0.1uF 0.1uF C112 C19 0.1uF 100uF/DIP C20 0.1uF C21 C18 220pF 0.1uF RN3 1 2 3 4 4x10K 8 7 6 GPIO 1 5 GPIO 0 GPIO 2 U2 3.3V_AVD 106 110 115 14 30 90 143 157 20 43 79 98 138 2.5V_AVDD_LV GND D GND GND GND CVDD_2.5 CVDD_2.5 CVDD_2.5 CVDD_2.5 CVDD_2.5 RVDD_3.3 RVDD_3.3 RVDD_3.3 RVDD_3.3 RVDD_3.3 VDD_DPLL_3.3 VDD_DDDS_3.3 VDD_SDDS_3.3 +2.5V_VDD REV:D GND remodify FB4 60/100M(0805) 100uF 2.5V_AVDD_LV GND +3.3V_DVDD 3.3V_AVDD RN4 1 2 3 8 7 6 4x10K HDATA1 GPIO 17 GPIO 21 C22 10uF REV:D remodify 100uF/DIP CR3 PNLC 4 5 C23 100uF/DIP C24 C25 C26 C27 C28 C29 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF FB3 60/100M(0805) RN5 1 2 3 8 7 6 4x10K GPO 0 GPO 1 GPO 2 4 5 REV:D remodify FB3 REV:D C GND remodify 2.5V_VDD NC VERY CLOSE TO VGA (DB-15 INPUT),REV:C remodify FB5 70/100M(1812) 100uF B+ G+ C30 C31 C32 C33 C34 C35 R+ 100uF/DIP0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 3.3V_AVDD 2.5V_AVDD 104 108 113 AVDD_RPLL_3.3 AVDD_DDDS_3.3 AVDD_SDDS_3.3 128 132 136 124 AVDD_BLUE_3.3 AVDD_GREEN_3.3 AVDD_RED_3.3 AVDD_ADC_3.3 117 119 VDD2_ADC_2.5 VDD1_ADC_2.5 120 118 GND1_ADC GND2_ADC REV:D GND remodify FB6 60/100M(0805) 100uF 2.5V_AVDD C36 C37 C38 C39 100uF/DIP0.1uF 0.1uF 220pF GND +5V 3.3V_AVD C40 X1 22pF C41 22pF 14.318MHz R31C55 R32C56 75 10pF 75 10pF R33 C57 10pF 75 GND GNDGND GND GND GND [BLON/OFFP] BIAS PNLON/OFF R4 2K TCLK XTAL 於rev:b更改isp功能pin,使isp能work PPWR PBIAS GND 121 122 125 129 133 105 109 114 SGND_ADC AGND_ADC AGND_BLUE AGND_GREEN AGND_RED AVSS_RPLL AVSS_DDDS AVSS_SDDS 40 41 PPWR PBIAS 102 103 TCLK XTAL U3A VCC 2 C42 0.1uF GND GPIO 20 MENU/KEY UP/KEY SELECT/KEY VGA-SCL VGA-SDA R6 33 R7 33 R8 33 GPIO 17 GPIO 16 GPIO 22 GPIO 15 GPIO 14 10 11 12 13 9 8 GPIO20/HDATA3 GPIO19/HDATA2 GPIO18/HDATA1 GPIO17/HDATA0 GPIO16/HFS GPIO22/HCLK 18 19 GPIO15/DDC_SCL GPIO14/DDC_SDA B NC RSTN 1 GND 3 DS1818-10 SOT23 GND U3 3 MR RESET 2 4 VCC GND 1 MAX811 GND /RESET ROM_WEn R9 R10 R- C43 G- C44 B- C45 100 100 R11 0.01uF 0.01uF 0.01uF REDGREENBLUE- HSYNC VSYNC RED+ GREEN+ BLUE+ 17 35 RESETn GPIO11/ROM_WEn 135 134 131 130 127 126 101 100 123 RED+ REDGREEN+ GREENBLUE+ BLUEHSYNC VSYNC ADC_TEST RMADDDR8 PULL 於REV:B ISP no work. 100 GND GND GND +5V RMADDR[0..15] A +3.3V_DVDD PBIAS_POL RN6 1 FULL CUST 2 DDC_PORT_SEL 3 OCM-START 4 RN7 1 2 3 4 784x10KRRMMAADDDDRR1145 6 5 RMADDR9 56784x10KRGGHDMPPIIAAOOTD12AD622R8 C R20 10K CN3於REV:B更改PITCH +5V C47 2 D1 0.1uF GND 2 D3 BAV99 3 2 D2 BAV99 3 1 BAV99 3 +DDC5V HDATA2 HDATA1 R94 0 +5V 1 R22 10K 1 GND CN3 VGA_CON C ZD1 5.6V R21 ZD2 5.6V 100 VGA_DET C48 100pF A A 15 5 10 14 4 9 13 3 8 12 2 FB3140/100M(0603G) ND B+ FB3240/100M(0603) B++ G+ G++ GND 100 R24 100 R26 GND B+/ C50 0.01uF BLUE+ R90 G+/ C53 0.01uF GREEN+ U5 31 WE 30 2 RMADDR15 3 RMADDR1429 RMADDR1328 RMADDR12 4 RMADDR1125 RMADDR1023 RMADDR9 26 RMADDR8 27 RMADDR7 5 RMADDR6 6 RMADDR5 7 RMADDR4 8 RMADDR3 9 RMADDR2 10 RMADDR1 11 RMADDR0 12 NC/A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 24 22 OE CE PLCC-32 DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 21 20 19 18 17 15 14 13 +5V NC 1 VCC GND 32 16 GND 30/100M(0603) 30/100M(0603) RMADDR15 RMADDR14 RMADDR13 RMADDR12 RMADDR11 RMADDR10 RMADDR9 RMADDR8 RMADDR7 RMADDR6 RMADDR5 RMADDR4 RMADDR3 RMADDR2 RMADDR1 RMADDR0 RMDATA7 RMDATA6 RMDATA5 RMDATA4 RMDATA3 RMDATA2 RMDATA1 RMDATA0 3.3V_DVDD FB7 FB8 NC FL5V C51 0.1uF C52 22uF 139 140 141 142 145 146 147 148 ROM_ADDR15 ROM_ADDR14 ROM_ADDR13 ROM_ADDR12 ROM_ADDR11 ROM_ADDR10 ROM_ADDR9 ROM_ADDR8 149 150 151 152 153 154 155 156 ROM_ADDR7 ROM_ADDR6 ROM_ADDR5 ROM_ADDR4 ROM_ADDR3 ROM_ADDR2 ROM_ADDR1 ROM_ADDR0 159 160 1 2 3 4 5 6 ROM_DATA7 ROM_DATA6 ROM_DATA5 ROM_DATA4 ROM_DATA3 ROM_DATA2 ROM_DATA1 ROM_DATA0 7 ROM_OEn gm2121 +3.3V_DVDD 107 111 116 VSS_DPLL VSS_DDDS VSS_SDDS 15 21 31 42 44 78 CRVSS CRVSS CRVSS CRVSS CRVSS CRVSS SCALER GND 91 99 137 144 158 CRVSS CRVSS CRVSS CRVSS CRVSS AVDD_LV_E_2.5 AVDD_OUT_LV_E_2.5 AVDD_OUT_LV_E_2.5 61 59 46 AVDD_LV_O_2.5 AVDD_OUT_LV_O_2.5 AVDD_OUT_LV_O_2.5 77 63 74 PNLON/OFF B GND Q1 MMBT3904L E CN1 VCO_LV 45 GND CH3P_LV_E CH3N_LV_E CLKP_LV_E CLKN_LV_E CH2P_LV_E CH2N_LV_E CH1P_LV_E CH1N_LV_E CH0P_LV_E CH0N_LV_E 48 49 50 51 52 53 54 55 56 57 CH3P_LV_O CH3N_LV_O CLKP_LV_O CLKN_LV_O CH2P_LV_O CH2N_LV_O CH1P_LV_O CH1N_LV_O CH0P_LV_O CH0N_LV_O 64 65 66 67 68 69 70 71 72 73 AVSS_LV_E AVSS_OUT_LV_E AVSS_OUT_LV_E 60 58 47 AVSS_LV_O AVSS_OUT_LV_O AVSS_OUT_LV_O 76 75 62 RXE3+ RXE3RXEC+ RXECRXE2+ RXE2RXE1+ RXE1RXE0+ RXE0RXO3+ RXO3RXOC+ RXOCRXO2+ RXO2RXO1+ RXO1RXO0+ RXO0- GND RXE[0..3];RXO[0..3] RXE3+ RXE3RXEC+ RXECRXE2+ RXE2RXE1+ RXE1RXE0+ RXE0RXO3+ RXO3RXOC+ RXOCRXO2+ RXO2RXO1+ RXO1RXO0+ RXO0- PNL_VCC 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 GND RXE3+ RXE3RXEC+ RXECRXE2+ RXE2GND RXE1+ RXE1RXE0+ RXE0RXO3+ RXO3GND RXOC+ RXOCGND RXO2+ RXO2RXO1+ RXO1RXO0+ RXO0GND GND GND VIN VIN VIN GND GND 32 31 C FI-SE30P-HF RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED 80 81 82 83 84 85 86 87 GND GPO 0 GPO 1 GPO 2 GPO 3 GPO 4 GPO 5 GPO 6 GPO 7 88 89 92 93 94 95 96 97 GPO 0 GPO 1 GPO 2 GPIO10 GPIO9 GPIO21/IRQn 34 33 16 GPIO12/NVRAM_SDA GPIO13/NVRAM_SCL GPIO8/IRQINn GPIO0/PWM0 GPIO1/PWM1 GPIO2/PWM2 GPIO3/TIMER1 GPIO6 GPIO7 36 37 22 23 24 25 26 29 32 GPIO4/UART_DI GPIO5/UART_DO 27 28 GPIO 10 GPIO 9 GPIO 21 GPIO 8 GPIO 0 GPIO 1 GPIO 2 VGA_DET GPIO 6 GPIO 7 UART_DI UART_DO R14 R5 R16 R17 R18 R19 R15 VBUFC 112 STI_TM1 STI_TM2 38 39 GND +3.3V_DVDD 33 33 33 2K 33 33 2K GPO 0 [POWER/AUDIO] GPO 1[MUTE/AUDIO] GPO 2[PD/AUDIO] +5V 0.1uF C46 +5V GND R12 R13 B VOL-UP/KEY POWER/KEY 10K 10K DOWN/KEY U4 SDA SCL RED/LED GPIO 0 [BRI_ADJ/BL] GPIO 1 [VOLUME/AUDIO] MUTE/KEY VOL-DOWN/KEY 5 6 7 8 SI SCK WP VCC VSS A2 A1 A0 4 3 2 1 GND 24LC16B GND GREEN/LED CN2 1 2 3 4 NC GPROBE GM2121 HS-AIN U6 1 A1 VCC 14 C49 0.1uF GND remodify rev:C 7 11 1 R+ FB3340/100M(0603R)++ 100 R28 R+/ C54 0.01uF RED+ 10K 2 B1 A6 13 R93 100 A 6 ROM_OEn GND GND R29 R30 VS-IN 3 A2 B6 12 HSYNC DB15 HD GND GND R23 R25 R27 GND 10K 10K 4 B2 A5 11 VS-AIN VGA-SDA NR VERY CLOSE TO VGA (DB-15 INPUT),REV:C remodify R34 100 HS-IN 5 A3 B5 10 R95 100 VSYNC C111 C ZD4 5.6V A A-HS A-VS VGA-SCL C C ZD5 5.6V ZD6 5.6V A GND NR GND NR GND A-VS REV:A至REV:B GROUND PLANE於RGB信號進入SCALER A C ZD3 5.6V GND R36 2.2K R37 2.2K GND GND R35 100 VS-IN C58 22pF GND C59 22pF GND remodify rev:C 6 B3 7 GND A4 9 B4 8 GND 74LVC14 GND 10pF GND Title A GND GND GND 5 4 3 2 1 ViewSonic Corporation Confidential - Do Not Copy VA720-2 19