ViewSonic VA902B Service Manual - Page 42

Inverter +14V C511 2.2uF/25V + C522 220uF/25V C537 5V NC BRIGHTNESS ON/OFF J507 33R 1/4W D513 SKS20-04AT 2 1 R528 124K 1% R522 88.7K 1% R523 62K 1% C529 220P G/ 50V R524 360K 1% C504 1n/50V IC501 1 NDRV2 2 PGND 3 NDRV1 4 GNDA 5 CT 6 LCT 7 DIM 8 ENA PDRV2 16 PDRV1 15 HSB 14 VIN 13 V5000 12 ISEN 11 CMP_SST 10 VSEN 9 OZ9910G R526 47K 1% R529 1M C505 0.01u/25V C506 4700P/50V R527 3.3M 1% C507 2200p/50V J501 33R 1/4W C528 1.0u/25V U501 1 2 3 S1 G1 4 S2 G2 D1 D1 8 7 6 D2 5 D2 AOP605 +5V C503 100n/50V C502 2.2u/25v U502 AOP605 1 2 3 4 S1 G1 S2 G2 8 D1 7 D1 D2 D2 6 5 5V OVP1 OVP2 R505 1M C508 22n/25V 3 2 1 D514 + SKS20-04AT C509 220uF/25V C538 ISN1C R506 3.9K 1% IS3 R507 3.9K 1% T501 EEL-19 22:2600 C524 10P/3KV 2 8 3 5 6 7 C527 5P/3KV C530 6.8n/50V T502 EEL-19 22:2600 2 8 3 5 6 7 C526 10P/3KV R501 3M/3kv 2 3 D508 1 BAV99 OP4 H 3 L CN504 D506 2 1 BAV99 R502 3.6K R512 1k CN502 H 2 OVP1 3 D507 1 BAV99 3 L D501 BAV99 C535 220pF OP3 2 1 R513 IS3 0R R511 1.5K 1% R503 3M/3KV 2 3 1 D503 BAV99 OP2 H 3 L CN503 D504 2 1 BAV99 R504 3.6K R510 1k CN501 ITEM R509 R511 AUO HSD/INL 1.5K 1.5K 1.5K 1.5K QDI 1.4K 1.4K 1 Q501 2N7002 2 Q505 2 2N70032 C531 Q504 2 2N70032 C534 Q503 2N7002 2 3 C532 Q502 2 2N70032 C533 1 1 1 1 0.1u/50V 0.1u/50V 0.1u/50V 0.1u/50V 5V 100K R508 C525 5P/3KV C523 6.8n/50V 2 OVP2 3 D505 1 BAV99 OP1 C536 220pF/50V R514 0R IS1 R509 1.5K 1% H 3 L D502 BAV99 21 R521 1M R519 1M R517 1M R515 1M ViewSoniIcnnoLux Document Number : LE1909 (VA902/b) VA902/b SIZE : APPRO BY : R531 10K NOTE OP1 OP2 OP3 OP4 R532 10K R533 10K R534 10K D512 1N4148W D511 1N4148W D510 1N4148W D509 1N4148W TITLE : 0921341041 Inverter A4 CHECK BY : DATE : SHEET 3 2005-07-15 OF 3 Rev : V03 DRAWN BY : ViewSonic Corporation Confidential - Do Not Copy VA902/b 39