MikroTik CRS226-24G-2S+IN, Инструкции по ремонту

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Routerboard does not boot
Problem area on top layer:
1. If Netinstall can see the board, but can not install it
•
try change RAM Flash U200, if did not help, go to next bullet
•
try change NAND Flash U401, if did not help, go to next bullet
14 Routerboard does not boot
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+85C T&R W9751G6KB-25 Winbond Electronics Corp.
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+85C Tray W9751G6KB-25 (tray) Winbond Electronics Corp.
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+85C NT5TU32M16DG-AC NANYA TECHNOLOGY CORPORATION [F]
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+90C T&R K4T51163QJ-BCE7T00 Samsung Semiconductor Europe GmbH
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+95C Tray K4T51163QJ-BCE7000 Samsung Semiconductor Europe GmbH
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+85C D59C1512164ZTJ25 Delson Technology Co.,Ltd
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+95C NT5TU32M16EG-AC NANYA TECHNOLOGY CORPORATION [F]
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+90C T&R K4T51163QQ-BCE7T00 Samsung Semiconductor Europe GmbH
DDR2 SDRAM 512Mbit DDR2-800 32Mx16bit BGA-84 0+90C Tray K4T51163QQ-BCE7000 Samsung Semiconductor Europe GmbH
NAND Flash 1Gbit x8 TSOP-48 3.3V Vih0.8Vcc 0+70C (Lead free) NOP4 HY27UF081G2A-TPCB Hynix Semiconductor GmBH
NAND Flash 1Gbit x8 TSOP-48 3.3V Vih0.8Vcc -40+85C NOP4 NAND01GW3B2CN6E Numonyx SA - German Branch
NAND Flash 1Gbit x8 TSOP-48 3.3V Vih0.8Vcc -10+125C PB-Free Tray K9F1G08U0D-SCB0000 Samsung Semiconductor Europe GmbH
NAND Flash 1Gbit x8 TSOP-48 3.3V Vih0.8Vcc -40+85C 1bit-ECC Tray S34ML01G100TFI900 Spansion Inc.
NAND Flash 1Gbit x8 TSOP-48 3.3V Vih0.8Vcc 0+70C RoHS Hardware 8 TC58BVG0S3HTA00B4Q Toshiba
NAND Flash 1Gbit x8 TSOP-48 3.3V Vih0.8Vcc -40+85C NOP4
W29N01GVSIAA Winbond Electronics Corp.