5,479 bytes added,
12:56, 12 February 2014 Amstrad used different floppy disk drives during the CPC range live time. These drives where either build-in as in CPC6128 and CPC464 or within the [[Amstrad_Disk_Drive|DDI-1/FD-1]] external drive extension.
They all shared the following characteristics :
* Requires 5V and 12V power supply, except EME-157 which is 5V only.
* use CF2 Compact Floppy Disc 3" discs
* Single sided
* 40 tracks
* 180kB per side (40 tracks/9 512byte sector per track)
== Floppy disk models and evolution ==
=== EME-150 A ===
[[File:EME-150A FrontRightTop.jpg|thumb|250px]]
Manufactured by matsushita, this is the original drive used in CPC664 and early DDI1 / CPC6128. Used from 1984 to early 1985.
* The chassis is made of one brass aluminium piece on which the disk axis, drive motor, head motor, track 0 detector and head assembly are precisely mounted.
* This base is mounted on a folded sheet chassis that support the disk insertion mechanism and a PCB holding the LED for index and write protection sensing as well as connection to track 0 detector.
* The insertion mechanism is working by translation of the floppy on the drive mechanism.
* Main PCB (30001) can be fully removed to access drive belt.
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=== EME-155 ===
[[File:EME-155 FrontRightTop.jpg|thumb|250px]]
Evolution of the EME-150 A, used during 1985.
* Head and floppy motor reference changed and swapped they position. Now the head motor is on the right, the drive one on the left.
* Due to the motor swap, the top PCB only support the index and write protection detection led.
* Main PCB (30002) can be fully removed to access drive belt.
* The optical write protection sensor use a new reference.
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=== EME-156 ===
[[File:EME-156 FrontRightTop.jpg|thumb|250px]]
New design, used from 1986 to 1988
* Uses EME-155 head and drive motors.
* Full brass aluminium chassis.
* New head.
* Main PCB (Z70312) cannot be fully removed without de-soldering some wires or un-mounting index sensor and track 0 sensor. Track 0 sensor has to be calibrated when mounted.
* Insertion mechanism simplification. The floppy now rotate around the insertion slot toward the floppy drive mechanism. The external visual impact is a slimmer insertion slot.
* Index detection led uses a small PCB mounted on the loading mechanism.
* <span style="color:#FF0000">The write protection sensing is done using a switch / pin assembly.</span>
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=== EME-156 V ===
[[File:EME-156V FrontRightTop.jpg|thumb|250px]]
Cost optimised version of the EME-156, used from mid 1988
* Brass aluminium chassis has been trimmed of unnecessary bits.
* Floppy drive mechanism pulley is changed for a lighter one with a increased diameter. The floppy motor position is slightly moved inward to compensate for the new pulley diameter and keep identical belt.
* New head motor with a smaller diameter screw.
* Main PCB (Z80264) is 50% smaller than previous version. It cannot be fully removed without de-soldering some wires or un-mounting index sensor and track 0 sensor. Track 0 sensor has to be calibrated when mounted.
* <span style="color:#FF0000">The write protection sensing is done using a switch / pin assembly.</span>
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=== EME-157 ===
[[File:EME-157 FrontRightTop.jpg|thumb|250px]]
5 volt only version of EME-156 V. Used in the 6128 plus.
* Head and drive motors changed for 5V version.
* Main PCB (Z80425) slightly smaller than EME-156 V one. It cannot be fully removed without de-soldering some wires or un-mounting index sensor and track 0 sensor. Track 0 sensor has to be calibrated when mounted.
* White face to match Plus range coulor.
* Minor modification of the brass chassis near the drive motor
* <span style="color:#FF0000">The write protection sensing is done using a switch / pin assembly.</span>
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== Gallery ==
<gallery>
File:EME-150A FrontRightTop.jpg|EME-150 A Front/Right
File:EME-150A BackLeftTop.jpg|EME-150 A Back/Left
File:EME-150A BackRightBottom.jpg|EME-150 A Back/Right
File:EME-150A Right.jpg|EME-150 A Right side
File:EME-150A Left.jpg|EME-150 A Left side
File:EME-150A Bottom.jpg|EME-150 A Bottom
File:EME-150A PcbTop.jpg|EME-150 A PCB top
</gallery>
<gallery>
File:EME-155 FrontRightTop.jpg|EME-155 Front/Right
File:EME-155 BackLeftTop.jpg|EME-155 Back/Left
File:EME-155 BackRightBottom.jpg|EME-155 Back/Right
File:EME-155 Right.jpg|EME-155 Right side
File:EME-155 Left.jpg|EME-155 Left side
File:EME-155 Bottom.jpg|EME-155 Bottom
File:EME-155 PcbTop.jpg|EME-155 PCB top
</gallery>
<gallery>
File:EME-156 FrontRightTop.jpg|EME-156 Front/Right
File:EME-156 BackLeftTop.jpg|EME-156 Back/Left
File:EME-156 BackRightBottom.jpg|EME-156 Back/Right
File:EME-156 Right.jpg|EME-156 Right side
File:EME-156 Left.jpg|EME-156 Left side
File:EME-156 Bottom.jpg|EME-156 Bottom
</gallery>
<gallery>
File:EME-156V FrontRightTop.jpg|EME-156 V Front/Right
File:EME-156V BackLeftTop.jpg|EME-156 V Back/Left
File:EME-156V BackRightBottom.jpg|EME-156 V Back/Right
File:EME-156V Right.jpg|EME-156 V Right side
File:EME-156V Left.jpg|EME-156 V Left side
File:EME-156V Bottom.jpg|EME-156 V Bottom
</gallery>
<gallery>
File:EME-157 FrontRightTop.jpg|EME-157 Front/Right
File:EME-157 BackLeftTop.jpg|EME-157 Back/Left
File:EME-157 BackRightBottom.jpg|EME-157 Back/Right
File:EME-157 Right.jpg|EME-157 Right side
File:EME-157 Left.jpg|EME-157 Left side
File:EME-157 Bottom.jpg|EME-157 Bottom
</gallery>