Acer Aspire 1510 Series, Service Manual

Page: 28 / 121

20 Chapter 1
Per Sector 512
Transfer Rate 250 kbits/s 500 kbits/s 500 kbits/s
Latency (avg.) 100 ms 83 ms 100 ms
Access Time
Track to Track 3 ms 3 ms 3 ms
Settling Time 15 ms 15 ms 15 ms
Average 79 ms 79 ms 79 ms
Latency (avg.) 100 ms 83 ms 100 ms
Minimum turn around delay 18 ms 18 ms 18 ms
Motor Start Time 500 ms 500 ms 500 ms
Motor Rotation Select Delay 500 ms 500 ms 500 ms
Rotational Speed
300 min
-1
{rpm} 360 min
-1
{rpm} 300 min
-1
{rpm}
Recording Density (most inside
track) 8,717 bpi 14,527 bpi 17,434 bpi
Flux density 8,717 bpi 14,527 bpi 17,434 bpi
Track Density 135 tpi 135 tpi 135 tpi
Cylinders 80 76(80) 80
Tracks 160 154(160) 160
Read/Write Heads 2 2 2
Encoding Method MFM MFM MFM
Distette Requirement 2DD 2HD 2HD
Power Supply
Voltage
+5V %
Max. Ripple 100mVp-p
Current Operating
Standby 0.8A (Max.) / 0.26A (typ.)
0.003A (Max.) / 0.002A (typ.)
Hard Disk Drive Interface
Item Specification
Vendor &
Model Name HGST 40GB
(IC25N040ATMR04)
CASCADE TOSHIBA
40GB(MK4021GAS)
NEPTUNE TOSHIBA
60GB(MK6021GAS)
NEPTUNE
Capacity
(MB) 40000 40000 60000
Bytes per
sector 512 512 512
Data heads 2 4 4
Drive Format
Disks 1 2 2
Spindle
speed (RPM) 4200RPM 4200RPM 4200RPM
Performance Specifications
Buffer size 2048KB 2048KB 2048KB
Interface ATA-5 ATA-5 ATA-5
Floppy Disk Drive Interface
Item Specification
10
±