Amstrad FDD part - Revision history

Erikarn: /* EME-156 */

2020-12-05T06:53:39Z

EME-156

@@ Line 39: / Line 39: @@
 * <span style="color:#FF0000">The write protection sensing is done using a [[Writepin|switch / pin assembly]].</span>
   <div style="clear: both"></div>
 === EME-156 V ===

Gerald: Added EME-156 ME56PB41 pcb

2017-07-05T16:53:24Z

Added EME-156 ME56PB41 pcb

← Older revision		Revision as of 16:53, 5 July 2017
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	File:EME-156 Right.jpg\|EME-156 Right side		File:EME-156 Right.jpg\|EME-156 Right side
	File:EME-156 Left.jpg\|EME-156 Left side		File:EME-156 Left.jpg\|EME-156 Left side
	File:EME-156 Bottom.jpg\|EME-156 Bottom		File:EME-156 Bottom.jpg\|EME-156 Bottom ME56PB31 PCB
			File:EME-156 Bottom ME56PB41.png\|EME-156 Bottom ME56PB41 PCB
	</gallery>		</gallery>

Gerald at 10:21, 2 August 2015

2015-08-02T10:21:33Z

← Older revision		Revision as of 10:21, 2 August 2015
Line 65:		Line 65:

	On EME 150A, the drive motor speed regulation is done on the main unit PCB, and is adjusted using VR201.		On EME 150A, the drive motor speed regulation is done on the main unit PCB, and is adjusted using VR201.
	On Other model (155/156/156V/157), the drive motor includes its own regulation PCB, and adjustment is done on the motor itself.		On Other model (155/156/156V/157), the drive motor includes its own regulation PCB, and adjustment is done on the motor itself, which can be one of the following reference (MMA-xxxxxx, QJN2-xxxx or MMU-xxxxxx)
	<gallery>		<gallery>
	File:EME-150A_RpmAdjust.jpg\|EME-150 A speed adjust		File:EME-150A_RpmAdjust.jpg\|EME-150 A speed adjust
Line 73:		Line 73:

	Rotation speed can be checked either by monitoring the drive index pulse with an oscilloscope or by using dedicated SW like [http://www.cpcwiki.eu/forum/applications/dsktest-v0-1b/ DskTest] or [http://www.amstradtoday.com/resur/rpm.zip RPM].		Rotation speed can be checked either by monitoring the drive index pulse with an oscilloscope or by using dedicated SW like [http://www.cpcwiki.eu/forum/applications/dsktest-v0-1b/ DskTest] or [http://www.amstradtoday.com/resur/rpm.zip RPM].

			Adjustment requires a 2mm wide screwdriver. A larger one will not fit in the potentiometer adjustment hole.

			On MMA-xxxxxx, the adjustment hole is covered with a white rubber and the internal PCB is facing down. <span style="color:#FF0000">That requires additional precautions : forcing the screwdriver in the hole may detach the potentiometer from the PCB and damage the motor.</span>

			On QJN2-xxxx and MMU-xxxxxx, the adjustment hole is covered with a black rubber and the internal PCB is facing up.

	== Gallery ==		== Gallery ==

Gerald: /* Rotation speed adjustment */

2014-03-06T19:33:03Z

Rotation speed adjustment

← Older revision		Revision as of 19:33, 6 March 2014
Line 72:		Line 72:
	</gallery>		</gallery>

	Rotation speed can be checked either by monitoring the drive index pulse with an oscilloscope or by using dedicated SW like [http://www.cpcwiki.eu/forum/applications/dsktest-v0-1b/ DskTest] or [http://www.amstradtoday.com/resur/rpm.zip ~~RMP~~].		Rotation speed can be checked either by monitoring the drive index pulse with an oscilloscope or by using dedicated SW like [http://www.cpcwiki.eu/forum/applications/dsktest-v0-1b/ DskTest] or [http://www.amstradtoday.com/resur/rpm.zip RPM].

	== Gallery ==		== Gallery ==

Gerald: drive speed adjustment

2014-03-06T16:50:59Z

drive speed adjustment

← Older revision		Revision as of 16:50, 6 March 2014
Line 55:		Line 55:
	* Head and drive motors changed for 5V version.		* 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.		* 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~~.		* White face to match Plus range colour.
	* Minor modification of the brass chassis near the drive motor		* Minor modification of the brass chassis near the drive motor
	* <span style="color:#FF0000">The write protection sensing is done using a [[Writepin\|switch / pin assembly]].</span>		* <span style="color:#FF0000">The write protection sensing is done using a [[Writepin\|switch / pin assembly]].</span>
	<div style="clear: both"></div>		<div style="clear: both"></div>

			== Drive maintenance ==
			=== Rotation speed adjustment ===
			3 inch drive spins at 300 RPM, giving a 200ms index pulse period. Rotation speed is factory adjusted, but may drift with time and cause read problem when drift is too large.

			On EME 150A, the drive motor speed regulation is done on the main unit PCB, and is adjusted using VR201.
			On Other model (155/156/156V/157), the drive motor includes its own regulation PCB, and adjustment is done on the motor itself.
			<gallery>
			File:EME-150A_RpmAdjust.jpg\|EME-150 A speed adjust
			File:EME-156_RpmAdjust.jpg\|EME-156 A speed adjust
			File:MMU-5B2LQJ_open.JPG\|Detail of MMU-5B2LQJ motor speed regulator
			</gallery>

			Rotation speed can be checked either by monitoring the drive index pulse with an oscilloscope or by using dedicated SW like [http://www.cpcwiki.eu/forum/applications/dsktest-v0-1b/ DskTest] or [http://www.amstradtoday.com/resur/rpm.zip RMP].

	== Gallery ==		== Gallery ==

Gerald: link to Writepin page

2014-02-18T20:27:47Z

link to Writepin page

Gerald at 13:03, 12 February 2014

2014-02-12T13:03:47Z

← Older revision		Revision as of 13:03, 12 February 2014
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	File:EME-157 Bottom.jpg\|EME-157 Bottom		File:EME-157 Bottom.jpg\|EME-157 Bottom
	</gallery>		</gallery>

			[[Category:DATA Storage]][[Category:CPC Internal Components]][[Category:DATA Storage]][[Category:Hardware]]

Gerald: Created page with "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/..."

2014-02-12T12:56:47Z

Created page with "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/..."

New page

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.
<div style="clear: both"></div>

=== 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.
<div style="clear: both"></div>

=== 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>
<div style="clear: both"></div>

=== 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>
<div style="clear: both"></div>

=== 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>
<div style="clear: both"></div>

== 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>

← Older revision		Revision as of 20:27, 18 February 2014
Line 37:		Line 37:
	* 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.		* 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.		* 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>		* <span style="color:#FF0000">The write protection sensing is done using a [[Writepin\|switch / pin assembly]].</span>
	<div style="clear: both"></div>		<div style="clear: both"></div>

Line 47:		Line 47:
	* New head motor with a smaller diameter screw.		* 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.		* 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>		* <span style="color:#FF0000">The write protection sensing is done using a [[Writepin\|switch / pin assembly]].</span>
	<div style="clear: both"></div>		<div style="clear: both"></div>

Line 57:		Line 57:
	* White face to match Plus range coulor.		* White face to match Plus range coulor.
	* Minor modification of the brass chassis near the drive motor		* 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>		* <span style="color:#FF0000">The write protection sensing is done using a [[Writepin\|switch / pin assembly]].</span>
	<div style="clear: both"></div>		<div style="clear: both"></div>