Battery Review and Tips

Floppy is a need to focus on maintenance of computer systems is one of external devices. Too much lead dust is the most common cause of floppy drive failure, while the focus of a floppy head cleaning dust, photoelectric detector, the stepper motor drive screw. When cleaning dust to make sure not to damage the head or the head movement, or human-induced head injury and head movement is extremely difficult to handle failure. If the head is not dirty, clean the disc can be cleaned without dismantling the floppy drive can be carried out. If cleaning with a clean plate is not good, it must be cleaned manually open the Dell Vostro A860 floppy drive. The following sequence describes the process.

1. Head with a cleaning disk cleaning

As head regular contact with the diskette, all kinds of dirt on the disc will pollute the head. Excessive dust can result in floppy drive heads to read and write properly is the most common floppy drive failure. Clean floppy disk with the floppy drive heads clean is very simple, the cleaning agents or ethanol (analytical grade level requirements) even spray in the cleaning disk, computer power, the system starts successfully, the cleaning disk into the floppy drive, floppy drive will, at its turn , cleaning the head on the plate will absorb dirt and dust around.

2. Disassemble and clean floppy drive

(1) Remove the cover
Floppy concave thin metal cover is screwed to the aluminum base, manual cleaning with a HP Pavilion dv7 Phillips screwdriver to unscrew the first fixed cover one or two screws (no floppy drive, some screws, you can save this step) will cover a little pull to the side outside, so cover protruding from the aluminum base of the buckle, you can remove the floppy drive on the cover.

(2) cleaning heads
Floppy 0, l No. heads were fixed in seeking a small car, below. Plastic head attached to the bottom of the head under the car fixed arm, can not move, it was easier to clean. Top of the head through a flexible plastic sheet attached to the active arm of the head HP battery car, on the other side is the active arm of the spring screw. Cleaning can be slightly hard on the head, it should be noted the General Assembly, the heads offset excessive force, and human-induced failures is extremely difficult to adjust the offset head, cleaning earnest attention.
Absorbent cleaning head signed by James when ethanol or a special head cleaning agents, gently scrub the head, wiping more than a few times, you can wipe away the more stubborn attachment. Cleaning by hand on the head when the head slightly downward pressure, so as to avoid head movement, to be alcohol dissolve dirt on the head, gently wipe dirt.
(3) cleaning the stepper motor shaft screw
SONY VGP-BPS18 Floppy drive read the disk if the system is often given during the “Error reading file” or “Sector not found” message, most of the stepper motor shaft and the head car has a bad convergence phenomenon, check the wire stepper motor shaft rod lubricants. If dirty or solidification, it can be cleaned with alcohol after the clocks added a little oil or high butter. Screw can be turned by hand to move the car heads to clean the entire screw.
(4) Cleaning photodetector
Its write-protected floppy old-fashioned test, disk density test, for disc testing, 0 detection is done by the photo detector can be used clean cotton swab soaked some ethanol photoelectric tubes and optical receiver tube surface. Are the new floppy drive their micro switch detector is not required treatment. The following will be introduced due to dust accumulation led to failure of the floppy drive. As you know, in the floppy disk drive, some signal is generated by optical coupling principle, such as the write-protect signal, the index signal, ready signal. These signals are generally used light-emitting diode and phototransistor to achieve. If the ThinkPad T60 LED emitted light efficiently on exposure to the phototransistor, the phototransistor conduction; the other hand, phototransistor closed.

In practice, found that the cleanliness of the room environment is not high, leading to dust in the light-emitting diode and phototransistor on over time, so not a normal phototransistor on and off, often have the following breakdown:

(L) floppy drive can read and write but can not format a floppy disk
Reason: no index signal. Because the index hole in the format required for the position in the reference information is at the first sign came after the pulse is written to the floppy disk. Because no index signal to the floppy disk controller, resulting in the floppy disk controller can not write information to determine the starting position of the work can not be formatted. Light-emitting diode and phototransistor as the possibility of damage is not, generally light-emitting diode and phototransistor due to the dust cover, then scrub with a cotton ball dipped in alcohol to clean water.
(2) system reported that “write protect” error
The absence of “write protection” to write the content or format a floppy disk, the computer prompts “Write Protect Error”, this is generally light-emitting diode and phototransistor as the dust covered the phototransistor can not be given access to the light-emitting diode the VGP-BPS13 battery light. The effect is equivalent to write-protected floppy mouth was closed, the light emitted by the diode cut-off, resulting in an illegal “write-protected” signal.
(3) The system reports “not ready” error
Operate on a floppy disk, the system sometimes prompt “Not Ready Error”. The reason is when the floppy disk drive spindle motor rotation after the pulse to detect whether the index and whether it is correct. If the index pulse is not or is not correct, the above error occurs. This problem usually occurs in the detection of the index hole light emitting diode and phototransistor, and then open the floppy drive you will find on the light-emitting diode and phototransistor lot of dust, the brightness decline, the index pulse is cut off the dust detection circuit can not detect two continuous index pulse, resulting in “not ready” error. NIKON en-el9 battery Light-emitting diodes and by cleaning up the dust on the phototransistor can clear these faults.
(4) The directory “stuck” phenomenon
A 3-inch floppy disk drive, floppy disk boot operation on the first film to be normal, but for a floppy disk, run the file as it exists on the disk when prompted “Bad Command Or Filename”, or column file directory, the display The first film is still on the disc, and we have called this “catalog retention” phenomenon. 3-inch floppy drive has a detector to detect whether there is a new disk is inserted. This circuit consists of the upper left corner of the phototransistor floppy monitoring.

Insert disk in the process, when the floppy disk in place, that is, sets of front panel control over infra-red line, interdiction channel photodiode end, the signal output from the circuit without a LATITUDE D800 floppy disk (empty state) low rise is high; the contrary , the floppy disk out a little, re-Cheong Kwong Road, photodiodes turn, reversed the circuit signal is low; the constant high level within the floppy disk drive that is not moving. When the light-emitting diode, phototransistor surface, excessive dust, the dust of light channel interdiction, close photodiodes, resulting in constant high level. Although the user has replaced the disc, but the level has remained high hwan, said the diskette drive without a replacement, that is, insert the new disk is not detected. Coupled with the first piece of floppy disk directory list, the contents of the directory to be loaded, the disk contents of the buffer is not empty. Therefore, the system has been replaced in the user identification disc which can not be the case, always the first piece of video memory the contents of the floppy disk directory that have a “catalog retention” of the failure phenomenon. In this regard, as long as the light-emitting diode and Sony VGP-BPS22 Battery phototransistor wipe the dust can be.