MiTAC 7521 PLUS/N service manual DVD-ROM drive, CD-R/RW drive

7521Plus / N N/B MAINTENANCE

‰XM-1802B:

Average data transfer rate of 3,600 KB/s

Average random seek time of 100ms

Random access time of 110ms.

Small size (only 12.7(H) x 128(W) x 129(D) mm)

Extremely low weight of 230g

Low average power consumption of 2.4W (maximum only 3.2W).

DVD-ROM drive

‰MATSUSHITA: UJDA520L-SH 4X speed Fast 170 ms Random Access Time (DVD) Max. 4X (DVD)/Max. 24X (CD)

Max. 5,408 Kbytes/s (DVD)/Max. 3,600 Kbytes/s (CD) Sustained Transfer Rate. PIO mode-4 ATAPI Drive (16.7 Mbytes/s)

DMA: Multi word DMA transfer mode-2 (Transfer Rate 16.7 Mbytes/s) Ultra DMA mode-2 (Transfer Rate 33.3 Mbytes/s)

CD-R/RW drive

‰MATSUSHITA: UJDA310 WRITE 4X-Speed

READ max 20X-Speed (CD-RW max 14X-Speed) PIOMODE: 16.6MB/s; Mode 4

DMAMODE: 4.2MB/s; Mode 0

Write: 150KB/s (Normal speed), 300KB/s (2X speed), 600KB/s (4X speed)

Buffer memory: 2MB Access speed 150ms (Typ.)

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