Inside Electronics - User contributions [en-gb]

Main Page

2011-03-30T10:10:29Z

Vandal:

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====== External links ======

[http://en.wikipedia.org Wikipedia]

Main Page

2011-03-30T10:08:36Z

Vandal:

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====== External links ======

[http://en.wikipedia.org Wikipedia]

Inside Electronics talk:Privacy policy

2009-10-04T17:49:31Z

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Help talk:Contents

2009-10-04T17:48:33Z

Vandal: /* puNotXUWZjXFYR */ new section

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Inside Electronics:General disclaimer

2009-10-04T17:46:59Z

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Inside Electronics:Privacy policy

2009-10-04T17:45:00Z

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Sharp MD-MT161E Minidisc Player

2009-10-04T17:34:45Z

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Inside Electronics talk:Privacy policy

2009-10-04T17:30:27Z

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Inside Electronics:About

2009-10-04T17:29:54Z

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Talk:Microsoft Computer Mouse

2009-10-04T17:26:13Z

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Talk:Sharp MD-MT161E Minidisc Player

2009-10-04T17:25:52Z

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Main Page

2009-10-04T17:25:32Z

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Inside Electronics:Privacy policy

2009-10-04T17:25:19Z

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Inside Electronics talk:FAQ

2009-10-04T17:23:30Z

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Help:Contents

2009-10-04T17:19:07Z

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Inside Electronics talk:About

2009-10-04T17:17:13Z

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Inside Electronics:Privacy policy

2009-10-04T17:16:03Z

Vandal: /* Disclaimer */

__NOTOC__

== User access ==
This website uses MediaWiki software and it is configured to allow changes by anonymous users. If you edit a page without logging in then your IP address will be used to identify you and it will be made public. It is recommended that you create an account before adding or editing content, this will also allow you to upload files.

Creating an account does not require you to provide an email address, but doing so will allow other contributors to contact you. The name and email address of registered users will be used solely for the administration of this site and will not be made available to any 3rd party unless required to do so by law.

=== Cookies ===
MediaWiki may use cookies to help improve site navigation, but the site should be fully accessible with cookies disabled. The cookies do not include personally identifiable information.

=== Statistics ===
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Inside Electronics talk:General disclaimer

2009-10-04T17:14:08Z

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Talk:Microsoft Computer Mouse

2009-10-04T17:13:26Z

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Inside Electronics:FAQ

2009-10-04T17:08:47Z

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Talk:Main Page

2009-10-04T17:05:03Z

Vandal: /* edtKiPQxyKOVybzh */ new section

Main Page Discussion

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Inside Electronics talk:General disclaimer

2009-10-04T17:04:17Z

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Inside Electronics talk:FAQ

2009-10-04T16:58:44Z

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Microsoft Computer Mouse

2009-10-04T16:58:44Z

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Help talk:Contents

2009-10-04T16:55:35Z

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Inside Electronics talk:About

2009-10-04T16:51:32Z

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Inside Electronics:General disclaimer

2009-10-04T16:48:13Z

Vandal: /* Disclaimer */

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Inside Electronics:General disclaimer

2009-09-21T22:51:05Z

Vandal: New page: === Disclaimer === This website is intended to allow photos of the inside of electronic items to be shared for the interest of visitors. The site owner provides no guarantee that the conte...

=== Disclaimer ===
This website is intended to allow photos of the inside of electronic items to be shared for the interest of visitors. The site owner provides no guarantee that the content of this site is factually accurate, since the content is provided by individuals who may be misinformed. There is no formal system of review or verification, although any visitor can discuss or edit the content. For these reasons, the site owner can make no guarantee regarding the reliability of information on this website.

Inside Electronics:Privacy policy

2009-09-21T22:37:36Z

Vandal: New page: __NOTOC__ == User access == This website uses MediaWiki software and it is configured to allow changes by anonymous users. If you edit a page without logging in then your IP address will ...

__NOTOC__

== User access ==
This website uses MediaWiki software and it is configured to allow changes by anonymous users. If you edit a page without logging in then your IP address will be used to identify you and it will be made public. It is recommended that you create an account before adding or editing content, this will also allow you to upload files.

Creating an account does not require you to provide an email address, but doing so will allow other contributors to contact you. The name and email address of registered users will be used solely for the administration of this site and will not be made available to any 3rd party unless required to do so by law.

=== Cookies ===
MediaWiki may use cookies to help improve site navigation, but the site should be fully accessible with cookies disabled. The cookies do not include personally identifiable information.

=== Statistics ===
This website uses [http://www.mrunix.net/webalizer/ webalizer] to monitor site statistics. The statistics include visitor IP addresses and domain names, but do not include any personally identifiable information. The MediaWiki software may also collect this information for statistical purposes. In both cases the information is stored for up to 1 year and is only available to the site owner, who does not make the information available to any 3rd party unless required to do so by law.

=== Disclaimer ===
The site owner cannot guarantee that the above information will remain private, since a determined individual may develop methods to uncover the information and disclose it. For this reason, the site owner can make no guarantee against unauthorized access to information provided in the course of visiting this website.

Fluorescent Starter

2009-09-21T18:31:17Z

Vandal: Clarify description of connections

The photos below show the inside of a fluorescent light starter. The starter is used to cause the preheating of the cathodes inside the fluorescent tube before it is started. Once the fluorescent tube has been started the tube conducts electricity and emits light (fluoresces) via the phosphorous coating on the inside the of glass tube. The starter is not required for this to continue and can be removed until the light is turned off.

The starter is essentially two bimetallic strips in a sealed glass capsule, with a small gap between them. The glass capsule contains a conductive gas, allowing sparks to travel across the gap. A capacitor may be connected in parallel to this (as shown in the photos below). This capacitor suppresses the RF noise generated by the device during start up, which would otherwise interfere with radios, televisions and other electrical equipment.

<gallery widths=200>
Image:Fluorescent_Starter_1.jpg|Fluorescent Starter in case
Image:Fluorescent_Starter_2.jpg|Case removed
Image:Fluorescent_Starter_3.jpg|Glass capsule
</gallery>

The starter is connected in series with the cathodes and in parallel with the tube itself. A ballast device is connected in series with this pair to control the current once the lamp has been started. This is shown in the diagram below.

[[Image:Fluorescent_Starter_Circuit.png]]

When the light is switched on, the tube does not conduct, and current flows through the cathodes to preheat them and also through the starter. This causes sparks between the two bimetallic strips inside the starter, which then heat up. The heat causes the bimetallic strips to bend together, and the gap closes. When the two strips touch a high current flows, but the lack of sparks allows the strips to cool down. The cooling strips then separate and the voltage reappears across the length of the fluorescent tube. By this time the cathodes have been heated sufficiently, and when the voltage appears across the tube it arcs down the length and the tube ignites. If the tube does not start, the starter continues to spark and the cycle repeats.

In some starters the bimetallic strips bend apart as they heat. This also causes the sparks to stop, igniting the tube and allowing the strips to cool down. The starter shown here works on the first method. This was proven by placing the glass capsule on the cooker hob and watching the gap between the strips close.

The ballast used in this circuit is essentially a choke and capacitor in series. The capacitor corrects the phase lag caused by the choke and improves the efficiency. The inductance of the choke causes a voltage spike when the starter switches off. This is due to the sudden change in current flow and can help achieve the initial spark required to start the fluorescent tube. The choke controls the current once the tube has been started, as it has a high impedance at the operating frequency of the tube (about 20kHz). It has a low impedance during start-up when the mains current flows through the cathodes and starter at 50Hz.

Other types of starter are also available, including solid state devices that allow the cathodes to preheat for a fixed length of time and will only try to start the tube a limited number of times. These starters are more expensive of course, but are able to start the tube if the supply voltage is lower or the ambient temperature is too hot or too cold for a conventional starter.

Many other fluorescent lamp circuits exist, but this is the only one to use this type of starter. For more information follow the links below.

== Links ==

* [http://www.advancetransformer.com/literature/pdf/FLB_Pocket_Guide.pdf A pocket guide to ballast devices] - Including several fluorescent tube circuits
* [http://www.howstuffworks.com/fluorescent-lamp.htm How a Fluorescent light works] - By http://www.howstuffworks.com
* [http://www.howstuffworks.com/question337.htm How a Fluorescent starter works] - By http://www.howstuffworks.com

ICOM IC-R2 Radio Scanner

2009-09-21T18:22:16Z

Vandal: Spelling corrections

This is the ICOM IC-R2 scanner. It is a small handheld scanner that receives AM and FM signals in the range 500kHz to 1.3GHz. This covers most public transmissions, except higher frequency satellite signals. The unit has a built in speaker and a detachable wideband antenna. It has 8 memory banks of 50 channels each and can store 25 scan ranges. It supports duplex receiving, where a conversation is held on two frequencies in the same band, and Continuous Tone Coded Squelch System (CTCSS) where the squelch can be set to open a channel only if it has the correct tone transmitted with it. This system allows a several radios to use the same frequency, but filter the traffic for only those that carry the required tone.

<gallery widths=200>
Image:IC-R2_Front1.jpg|Front of Radio scanner
Image:IC-R2_Front2.jpg|Front with cover removed
Image:IC-R2_Front3.jpg|Front with main board removed
</gallery>

The photos above show the front of the unit, with the front cover removed and then with the display circuit board removed. All the control and display logic is managed by the large surface mount IC under the LCD screen in the middle photo. The push button contacts can be seen to the right of the screen, followed by a gap for the speaker. The right hand photo shows the RF board behind the display circuit board. This uses a connector to neatly link the two circuit boards together. The RF board uses a metal screen cover on both sides to reduce interference. The surface mount circuitry under these screens is shown further down the page.

The photos below show the back of the unit, with the back cover removed and with the RF circuit board removed. The large speaker can be seen to the right, and the metal cover over the Radio board can be seen to the left. The RF board plugs into the socket on the main board, which can be seen in the right hand photo. The headphone socket between the antenna and dial can be used to link the scanner to a PC via the serial port (see links below). Good reception requires the scanner to be held in the hand, giving a good ground for the antenna.

<gallery widths=200>
Image:IC-R2_Back1.jpg|Back of Radio scanner
Image:IC-R2_Back2.jpg|Back with cover removed
Image:IC-R2_Back3.jpg|Back with RF board removed
</gallery>

The right hand photo above shows the large number of discrete components used on the main board. The RF board is packed with discrete components on both sides and demodulates the incoming signal on the frequency selected by the control board. The control board probably just deals with low frequency signal processing (e.g. CTCSS) and audio, as well as the digital interface and control. The 4MHz crystal is used for the microprocessor clock.

If you were wondering how the IC-R2 can do so much in such a small package, look at the photos below. The left photo is a close up of the main board. The dial is at the top left. The headphone and PC link socket is in the centre. The antenna connection is in the top right. The front of the RF board is shown in the middle, with the plug to connect to the main board in the centre. The metal screen has not been removed, but underneath the dense covering of components continues. A 10 pence piece is shown for scale. The right hand photo shows the other side of the RF board. This time the metal screen has been removed and the path from the antenna in the bottom left to the demodulator in the top right can be seen. The demodulator has its own screen, to reduce the chance of a scanner detector measuring the frequency being demodulated.

<gallery widths=200>
Image:IC-R2_Board1.jpg|Main board
Image:IC-R2_Board2.jpg|Front of RF board
Image:IC-R2_Board3.jpg|Back of RF board
</gallery>

I currently have the following channels programmed into my scanner, the frequencies apply to the UK:

{| border="1"
| Bank 0 || Citizens Band (CB) channels || 26.965MHz to 27.855MHz in 10KHz steps
|-
| Bank 1 || Band II FM Radio stations || 87.6MHz to 107.9MHz
|-
| Bank 2 || Airband channels || 108MHz to 136.9MHz
|-
| Bank 3 || PBR Radios (Taxis etc.) || 165.05MHz to 173.0375MHz in 12.5KHz steps
|-
| Bank 0*|| PMR446 Radios || 446.00625MHz to 446.09375MHz in 12.5KHz steps
|-
| Bank 1*|| Band IV TV channels 21 to 68 || 477.25MHz to 853.25MHz in 8MHz steps
|-
| Bank 2*|| colspan="2" | Empty
|-
| Bank 3*|| colspan="2" | Frequencies to ignore when scanning (a feature of the IC-R2)
|}

== Links ==

* [http://www.ukmidlandscanner.co.uk/r2rev.htm Review of the IC-R2 Scanner] - Including instructions and specifications
* [http://www.zorg.org/radio/r2cable.shtml Connecting the IC-R2 to a PC] - How to make your own serial cable, with cloning software
* http://www.ic-r2.com/ - Buy the serial cable and software for connecting to a PC
* [http://www.ajpotts.fsnet.co.uk/spectrum.html The Radio Spectrum] - A complete list of frequencies from http://www.ajpotts.fsnet.co.uk/

Psion Series 5

2009-09-21T18:20:00Z

Vandal: Spelling corrections

I bought my Psion 5 in 1997 when they first came out. I then swapped it for a Psion 5 MX in 2002 via eBay. Many more PDAs have arrived on the market in that time, but I still haven't been convinced to move away from the combination of ingenious Psion design and reliable EPOC software. Friends of mine have the iPAQ and the Palm Tungsten T3, but adding a colour screen and making it smaller hasn't made up for taking away the keyboard and reducing the battery life... Enough of my Psion banner waving, lets look inside:

<gallery widths=200>
Image:Psion_Front_1.jpg|Front of Psion 5
Image:Psion_Front_2.jpg|Front with case removed
Image:Psion_Front_3.jpg|Front with screen removed
</gallery>

The photos above show the Psion open. When the Psion is opened, the screen lifts up and tips back, while the keyboard slides forward. The centre of the screen is then over the base, so that the unit doesn't tip or move when the stylus is pressed on the screen. The keyboard uses some patented technology to keep it thin, while giving the keys a tactile feel. During fabrication a laser is used to make white patterns on the grey keys - so the keys are placed on the keyboard blank and then the symbols are 'burnt' onto them, leaving a mark that cannot be scratched off. The plastic under the keyboard is silvered to reduce electromagnetic interference.

The photos below show the Psion closed. In the middle photo the plastic case over the screen has been removed. The plastic case of the Psion 5 has a rubber finish so that it cannot be easily scratched. Unfortunately this rubber can wear off, and so the Psion 5 MX has a plastic finish with a matt metallic colour to hide any scratches. More modern devices, such as digital cameras, use thin metal cases with a matt finish. It is worth pointing out that the metal badge in the left photo is slightly raised, so that it rests against the battery compartment when open and saves the plastic case from being marked.

<gallery widths=200>
Image:Psion_Top_1.jpg|Top of Psion 5
Image:Psion_Top_2.jpg|Top with case removed
Image:Psion_Top_3.jpg|Top with backlight removed
</gallery>

The middle photo above shows the thin backlight, using technology made famous by the Indigo backlight for watches. This is only needed in dim lighting and the LCD screen on its own allows for a much longer battery life than TFT screens (30 continuous hours or so). The right hand photo shows the back of the LCD screen, with a resolution of 640 by 240 (half of a VGA screen). In front of this is a touch sensitive membrane to allow writing and selecting on the screen with the stylus. This uses a scratch resistant plastic, so that when a pen is accidentally used it does not leave a mark.

The screen and touch sensitive membrane are shown in the left photo below. They share the same ribbon cable to the main board. This ribbon is the Achilles heel of the Psion 5 as is the first thing to wear out, but psionflexi.co.uk can replace a broken ribbon cable with an improved version for a reasonable fee.
The middle photo shows the underside of the keyboard, with the compatibility logos: European certificate, Compact flash, IrDA Infra-red, EPOC operating system, ARM Processor and of course - made in the UK. The right hand photo shows the battery compartment, which holds two AA batteries. These have a high power to size ratio and are also cheap. I don't use rechargeable batteries as Alkaline batteries last longer and they only need replacing once a month.

<gallery widths=200>
Image:Psion_Screen.jpg|Screen and touch sensor
Image:Psion_Keyboard.jpg|Keyboard underside
Image:Psion_Batteries.jpg|Battery compartment
</gallery>

The photos below show the Psion from underneath. The left photo shows the Psion in the open position, with the keyboard out. The Compact flash disc drive cover is on the left, with the dictation and playback buttons at the bottom. These three buttons can also be used to snooze alarms or reminders. The stylus is stored in a slot above the disc drive, with a positive latching action to stop it falling out. The backup battery compartment is to the right, which also contains the reset hole. The battery can be removed using the stylus, thanks to a slot designed for this purpose. Under the battery there are six contact points that are used at the factory to program the Psion. The Psion 5 is sold in many countries, but the only difference is the software programmed into the ROM through this port, and the symbols burnt onto the keys by the laser.

The middle photo shows the one and only circuit board, with the disc, stylus and backup battery in place. In the right hand photo these have been removed, along with the battery compartment cover. The ribbon cable to the speaker can be seen in the top left and the microphone in the bottom left. In the top right is the infra-red port and serial port, with the power connector for the DC supply. The module in the centre of the board holds the EPOC operating system in ROM, with the ARM processor in the Cirrus chip underneath.

<gallery widths=200>
Image:Psion_Bottom_1.jpg|Bottom of Psion 5
Image:Psion_Bottom_2.jpg|Bottom with case removed
Image:Psion_Bottom_3.jpg|Bottom with frame removed
</gallery>

The circuitry to the left of the backup battery is the power supply, with an inductor to step up the voltage. This is the part that 'whines' when the processor or backlight are drawing power. The circuit pulses 3 volts from the batteries to the inductor, and then uses the back EMF to catch the higher 5 volts required for circuit, backlight and Compact flash disc, with around 95% efficiency. The ribbon cable to the backlight can be seen in the bottom right. There is also a trimming capacitor for the clock, which is set at the factory. This reduces the drift in time keeping and allows the Psion to be reasonably accurate.

The left hand photo below shows the shell with the circuit board removed. The grove used to guide the keyboard can be seen in the middle. The plastic is silvered again to reduce electromagnetic interference. The middle photo shows the circuit board in the bottom of the case, and the circuit board is shown on its own, turned round, in the right hand photo.

<gallery widths=200>
Image:Psion_Top_4.jpg|Top with keyboard removed
Image:Psion_Board_1.jpg|Circuit board in case
Image:Psion_Board_2.jpg|Circuit board
</gallery>

On this side of the circuit board the battery connector and memory can be seen. There is a switch to detect when the disc drive door is open. The door is marked with a serial number, which is also programmed into the Psion. The switch in the centre detects when the keyboard slides out, so that the power can be turned on and off when the Psion is opened and closed. There are lots of other good websites with photos from inside the Psion 5 - follow the links below.

== Links ==

* [http://psion.by.ru/psioninside/ Akaev's Psion Inside] - How to take apart a Psion 5, including loads of cool pictures
* [http://www.psionflexi.co.uk/ The Psion Screen Flexi Repair Site] - The ideal solution to a faulty screen
* [http://netti.nic.fi/~jmietti/pda/psion5rep1.htm Psion 5 screen repair] - Repairing the screen connection, with excellent graphics
* [http://www.portal-pda.com/guides/5boards/5boards.html Psion 5 motherboard galore] - Comparison of Psion 5 and Psion 5 mx with detailed images and descriptions
* [http://www.series5mx.com/ Psion 5 mx] - The official website
* [http://www.psionarchives.com/series_5_epoc.html Psion Archives] - Loads of software for the Psion 5 and other Psion machines

Sharp MD-MT161E Service Mode

2009-09-21T18:15:48Z

Vandal:

== Entering service mode ==

To enter test mode hold down Display and Enter, then press Play. The Software version will be displayed, followed by all the symbols on the display and then finally the word 'TEST'. In this state the following buttons can be pressed:

* << and >> Moves the head - useful if something is trapped underneath
* + Shows the software version number
* Disp Initially shows CHG_ON, << and >> for CHG_RT, CHG_CU - Probably different Charging modes.
* Bass Enters the service menu. This is described below.

== The service menu ==

Once in service mode, press Bass to enter the menu. Use << and >> to move through the items on the menu and press Play to select an item. Press Stop to quit. The function of each item is listed here:

* Auto1 Appears to calibrate showing AT1 press play to continue to AT2.
It doesn't work on non-recordable discs, but it does on write-protected recordable discs.
* Auto2 Appears to calibrate showing AT2 press play to continue to T Play. Works on recordable and non-recordable discs
* T Play Appears to give a quality assessment. While counting press Disp to view
** AP0060 (Position)
** CE0012 (Error rate - goes up if you tap device)
** AE0000 (Error rate - Normally zero but increases when tapped)
** (non-recordable discs show SQ0000 etc with CE0000 but not AP)
* While counting press Bass to select 1TR, 10TR, 0384TR
* While counting press Mode to move to Manu2 (See below)
* T Rec Would probably be similar to T Play but returns to TEST if disc is write protected
* DinMon Digital In Monitor. << and >> Change between C, U1 and U2 (cannot be edited)
* Inner Shows SQFFA9 counting up and looping round, even on recordable discs.
Value keeps dropping back a bit then continuing.

=== Normal ===

Selecting normal from the menu (by pressing Play) is probably the most interesting option. The Minidisc player plays as normal showing the Track number, but it also shows other things:

* The first two digits show the motor speed, which will start and stop if you're using batteries to preserve their life.
* The remaining digits show the address on the disc currently being read from. The disc starts at 003200.
* The level indicator shows how full the buffer is. As the level drops the motor spins up and the buffer refills.
** If the unit is being shaken, it will take longer to refill and this uses more battery power.
** If the unit is being shaken, the player will not let the buffer drop so low before refilling it.
* If you get ErAdj. go to T Play and press play. This will automatically run Auto2 if necessary and then show the error rate. Press stop and go straight to Normal and try again.

=== Settings ===

The remaining menus contain variables that can be adjusted. I have experimented with them all looking for a way to increase the speed at which the text scrolls across the screen. Unfortunately I didn't find this, but I did find a few others, such as the Contrast level and some Audio properties. Here is the complete list:

Key:
* '-' Indicates the start of a group.
* '*' Indicates it can be adjusted.
* Vol + and - Increment / Decrement value (For starred values)
* << and >> Change between rows, Disp to change between elements of Row

* Manu1
** - TMP 05 (Current temperature of unit)
** - Ah FCB
** Bh FBF
** Eh 001
** Fh 005
** - LON P
** -* RFg 4, AB 3E0 (Disc spins start stop)
** * Sa 64B, AB 3A0 (Silent)
** * Sb 64B, AB 3D5
** -* PTG 2, ef 221 (Disc spins smooth)
** * PCH 03, ef 220
** -* GTG 2, ef 1D1 (Head moves)
** * GCH 02, ef 1CE
** -* RCG 6, TC 115
** -* SE 5BC, ei 0E6, EF 072
** -* SF 5A9, fi 0E8, EF 072
** -* RFG 4, ab 2EE (Disc spins smooth and Head/Focus wobble)
** * SA 64B, ab 2EE (Silent)
** * SB 64B, ab 2EE
** - AH FC7, (Disp turns Repeat on and off)
** - BH FC5
** - EH 002
** - FH 005
** - TH FD
** - AL FED
** - BL FDD
** - EL 008
** - FL 008
* Manu2
** - TMP 05 (Current temperature of unit)
** - LON P
** -* PE 5C5, ei 106, EF 075
** -* PF 571, fi 117, EF 075
** -* La 64F, ab 32F (Falls to 2D0 then resets up to 32F)
** -* Lb 64F, ab 32F (Head moves)
** -* GC 1E, TC 110
** -* GE 5DF, ei 0E5, EF 071
** -* GF 5B9, fi 0E8, EF 071
** -* LA 5DE, ab 34F
** -* LB 64F, ab 34F
* Rslt1
** - AH FC7
** - BH FC5
** - EH 002
** - FH 005
** - AL FED
** - BL FDD
** - EL 008
** - FL 008
** - TH FD
** -* PTG 2
** -* GTG 2
** -* RCG 6
** -* RFG 4
** -* PCH 03
** -* GCH 02
** -* SA 64B
** -* SB 64B
** -* SE 5BC
** -* SF 5A9
* Rslt2
** -* PE 5C5
** -* PF 571
** -* GE 5DF
** -* GF 5B9
** -* HA 80C
** -* HB 80C
** -* LA 5DE
** -* LB 64F
** -* GC 1E
* E Data
** - E016, 07 (Hold down Bass to show extra 2 digits)
** - E116, 07
** - E216, 07
** - E316, 07
** - E416, 07
** - E516, 0B
** - E652, 09
** - E716, 07
** - E852, 09
** - E952, 09
* EEPROM
** Temp (Play to select group, Disp to go up one level)
** * TM05A5
** TPinA2
** Focus
*** FG B0
*** FF1 70
*** FF2 E8
*** FZH ED
*** FLn 0A
*** DJG 14
*** FLV 33
*** WTf 20
*** FSS E9
** Track
** Spin
** Sled
** Bass
*** * BS1 3F (Set the amount of Bass boost for each of the 3 levels)
*** * BS2 1F
*** * BS3 E2
** ADJSET
*** * COK A0
*** * FAT C0
*** * TAT 3E
*** * CAT 20
*** * FAB E0
** DEQSET
*** * HQ1 90
*** * HQ2 90
*** * HSG 11
*** * HSO FD
*** * LQ1 90
*** * LQ2 90
*** * LSG 11
*** * LSO 00
*** * GQ1 98
*** * GQ2 84
*** * GSG 11
*** * FLp 08
** CTRL
*** * CT0 05
*** * CT1 11
*** * CT2 7F
*** * CT3 30
*** * RC0 C0
*** * RC1 FE
*** * SYC A6
*** * PWL 03
*** * DR1 92 (Set the battery level for the battery indicator)
*** * DR2 C8
*** * IN1 D3
*** * IN2 64
*** * IN3 D2
*** * INH 64
*** * DRH C8
*** * PLE 1B
*** * RCE 42
*** * ELT 76
*** * SLT 43
*** * SPM 00 - Contrast (If you set FF you won't be able to see the screen to put it back!)
*** * MSL 00
*** * US0 00
*** * US1 00
*** * US2 00

Sharp MD-MT161E Service Mode

2009-09-21T18:13:30Z

Vandal: Spelling corrections

== Entering service mode ==

To enter test mode hold down Display and Enter, then press Play. The Software version will be displayed, followed by all the symbols on the display and then finally the word 'TEST'. In this state the following buttons can be pressed:

* << and >> Moves the head - useful if something is trapped underneath
* + Shows the software version number
* Disp Initially shows CHG_ON, << and >> for CHG_RT, CHG_CU - Probably different Charging modes.
* Bass Enters the service menu. This is described below.

== The service menu ==

Once in service mode, press Bass to enter the menu. Use << and >> to move through the items on the menu and press Play to select an item. Press Stop to quit. The function of each item is listed here:

* Auto1 Appears to calibrate showing AT1 press play to continue to AT2.
It doesn't work on non-recordable discs, but it does on write-protected recordable discs.
* Auto2 Appears to calibrate showing AT2 press play to continue to T Play. Works on recordable and non-recordable dics
* T Play Appears to give a quality assessment. While counting press Disp to view
** AP0060 (Position)
** CE0012 (Error rate - goes up if you tap device)
** AE0000 (Error rate - Normally zero but increases when tapped)
** (non-recordable discs show SQ0000 etc with CE0000 but not AP)
* While counting press Bass to select 1TR, 10TR, 0384TR
* While counting press Mode to move to Manu2 (See below)
* T Rec Would probably be similar to T Play but returns to TEST if disc is write protected
* DinMon Digital In Monitor. << and >> Change between C, U1 and U2 (cannot be edited)
* Inner Shows SQFFA9 counting up and looping round, even on recordable discs.
Value keeps dropping back a bit then continuing.

=== Normal ===

Selecting normal from the menu (by pressing Play) is probably the most interesting option. The Minidisc player plays as normal showing the Track number, but it also shows other things:

* The first two digits show the motor speed, which will start and stop if you're using batteries to preserve their life.
* The remaining digits show the address on the disc currently being read from. The disc starts at 003200.
* The level indicator shows how full the buffer is. As the level drops the motor spins up and the buffer refills.
** If the unit is being shaken, it will take longer to refill and this uses more battery power.
** If the unit is being shaken, the player will not let the buffer drop so low before refilling it.
* If you get ErAdj. go to T Play and press play. This will automatically run Auto2 if necessary and then show the error rate. Press stop and go straight to Normal and try again.

=== Settings ===

The remaining menus contain variables that can be adjusted. I have experimented with them all looking for a way to increase the speed at which the text scrolls across the screen. Unfortunately I didn't find this, but I did find a few others, such as the Contrast level and some Audio properties. Here is the complete list:

Key:
* '-' Indicates the start of a group.
* '*' Indicates it can be adjusted.
* Vol + and - Increment / Decrement value (For starred values)
* << and >> Change between rows, Disp to change between elements of Row

* Manu1
** - TMP 05 (Current temperature of unit)
** - Ah FCB
** Bh FBF
** Eh 001
** Fh 005
** - LON P
** -* RFg 4, AB 3E0 (Disc spins start stop)
** * Sa 64B, AB 3A0 (Silent)
** * Sb 64B, AB 3D5
** -* PTG 2, ef 221 (Disc spins smooth)
** * PCH 03, ef 220
** -* GTG 2, ef 1D1 (Head moves)
** * GCH 02, ef 1CE
** -* RCG 6, TC 115
** -* SE 5BC, ei 0E6, EF 072
** -* SF 5A9, fi 0E8, EF 072
** -* RFG 4, ab 2EE (Disc spins smooth and Head/Focus wobble)
** * SA 64B, ab 2EE (Silent)
** * SB 64B, ab 2EE
** - AH FC7, (Disp turns Repeat on and off)
** - BH FC5
** - EH 002
** - FH 005
** - TH FD
** - AL FED
** - BL FDD
** - EL 008
** - FL 008
* Manu2
** - TMP 05 (Current temperature of unit)
** - LON P
** -* PE 5C5, ei 106, EF 075
** -* PF 571, fi 117, EF 075
** -* La 64F, ab 32F (Falls to 2D0 then resets up to 32F)
** -* Lb 64F, ab 32F (Head moves)
** -* GC 1E, TC 110
** -* GE 5DF, ei 0E5, EF 071
** -* GF 5B9, fi 0E8, EF 071
** -* LA 5DE, ab 34F
** -* LB 64F, ab 34F
* Rslt1
** - AH FC7
** - BH FC5
** - EH 002
** - FH 005
** - AL FED
** - BL FDD
** - EL 008
** - FL 008
** - TH FD
** -* PTG 2
** -* GTG 2
** -* RCG 6
** -* RFG 4
** -* PCH 03
** -* GCH 02
** -* SA 64B
** -* SB 64B
** -* SE 5BC
** -* SF 5A9
* Rslt2
** -* PE 5C5
** -* PF 571
** -* GE 5DF
** -* GF 5B9
** -* HA 80C
** -* HB 80C
** -* LA 5DE
** -* LB 64F
** -* GC 1E
* E Data
** - E016, 07 (Hold down Bass to show extra 2 digits)
** - E116, 07
** - E216, 07
** - E316, 07
** - E416, 07
** - E516, 0B
** - E652, 09
** - E716, 07
** - E852, 09
** - E952, 09
* EEPROM
** Temp (Play to select group, Disp to go up one level)
** * TM05A5
** TPinA2
** Focus
*** FG B0
*** FF1 70
*** FF2 E8
*** FZH ED
*** FLn 0A
*** DJG 14
*** FLV 33
*** WTf 20
*** FSS E9
** Track
** Spin
** Sled
** Bass
*** * BS1 3F (Set the amount of Bass boost for each of the 3 levels)
*** * BS2 1F
*** * BS3 E2
** ADJSET
*** * COK A0
*** * FAT C0
*** * TAT 3E
*** * CAT 20
*** * FAB E0
** DEQSET
*** * HQ1 90
*** * HQ2 90
*** * HSG 11
*** * HSO FD
*** * LQ1 90
*** * LQ2 90
*** * LSG 11
*** * LSO 00
*** * GQ1 98
*** * GQ2 84
*** * GSG 11
*** * FLp 08
** CTRL
*** * CT0 05
*** * CT1 11
*** * CT2 7F
*** * CT3 30
*** * RC0 C0
*** * RC1 FE
*** * SYC A6
*** * PWL 03
*** * DR1 92 (Set the battery level for the battery indicator)
*** * DR2 C8
*** * IN1 D3
*** * IN2 64
*** * IN3 D2
*** * INH 64
*** * DRH C8
*** * PLE 1B
*** * RCE 42
*** * ELT 76
*** * SLT 43
*** * SPM 00 - Contrast (If you set FF you won't be able to see the screen to put it back!)
*** * MSL 00
*** * US0 00
*** * US1 00
*** * US2 00

Taking Apart A Neilsen Kellerman Cox Box

2009-09-21T18:05:36Z

Vandal: Spelling corrections

The following are guidelines only, and if you think things are going wrong you should send the unit to a service company such as http://www.oarsport.co.uk

The general idea is to take the screws out the bottom and push the contents up and out of the white cup shaped case. If you've taken the allen screws out the front panel then e-mail me again as the spacers may have fallen out of place, even if the allen screws went back in.

# Remove the string handle.
# Make sure the rim around the front panel is circular as the front panel must slide out through it.
# Clean inside the rim around the edge of the front panel and add a little vaseline to help it slide out.
# Take the screws out the bottom and remove the plastic washers.
# Put the screws most of the way back in leaving a 3mm gap.
# Push the base of the cox box down on a hard surface so that the screws are pushed up into the bottom of the cox box. This should push the front panel up slightly.
# Push the front panel back down and remove any dirt that was pushed up the side of the rim.
# Loosen the screws to increase the gap to 6mm and push down again.
# The front panel should slide up further - push it back in and clean any dirt. Repeat until the front panel can be pushed up and down easily.
# Remove the screws and insert longer screws or some rod, or whatever you can find to push the front panel all the way out.

(Pushing the base down on a hard surface may be assisted by a rubber mallet or wooden block if nothing is moving)

You'll probably need to replace the batteries. You should use Ni-Cad cells as Ni-MH don't like being left on charge. The cox box only has a simple charging circuit.

[[Neilsen Kellerman Cox Box|<< Back to the Main Article]]

Help:Editing

2009-09-19T22:26:20Z

Vandal:

The following information is copied from the MediaWiki [http://www.mediawiki.org/wiki/Help:Formatting Formatting help] page and may be out of date.

You can format your text using wiki markup. This consists of normal characters like asterisks, single quotes or equation marks which have a special function in the wiki, sometimes depending on their position. For example, to format a word in ''italic'', you include it in two single quotes like <code><nowiki>''this''</nowiki></code>

== Text formatting markup ==

{| class="wikitable"
! Description !! You type !! You get
|-
! colspan="3" style="background:#ABE" | character (inline) formatting – ''applies anywhere''
|-
|Italic text
| <code><nowiki>''italic''</nowiki></code>
|''italic''
|-
| Bold text
| <code><nowiki>'''bold'''</nowiki></code>
|'''bold'''
|-
| Bold and italic
| <code><nowiki>'''''bold & italic'''''</nowiki></code>
|'''''bold & italic'''''
|-
|Escape wiki markup
| <code><nowiki><nowiki>no ''markup''</nowiki></nowiki></code>
|<nowiki>no ''markup''</nowiki>
|-
! colspan="3" style="background:#ABE" | section formatting – ''only at the beginning of the line''
|-
|Headings of different levels
| <pre>=level 1=
==level 2==
===level 3===
====level 4====
=====level 5=====
======level 6======</pre>
An article with 4 or more headings automatically creates a [[wikipedia:Wikipedia:Section#Table of contents (TOC)|table of contents]].

|
<div style="font-size: 188%; margin: 0; padding-top: .5em; padding-bottom: .17em; border-bottom: 1px solid #aaa">Level 1</div>
<div style="font-size: 150%; margin: 0; padding-top: .5em; padding-bottom: .17em; border-bottom: 1px solid #aaa">Level 2</div>
<div style="font-size: 132%; font-weight: bold">Level 3</div><b>Level 4</b><div style="font-size: 86%; font-weight: bold">Level 5</div><b style="font-size: 80%">Level 6</b>
|-
|Horizontal rule
| <code>----</code>
|
----
|-
|Bullet list
|
<pre>
* one
* two
* three
** three point one
** three point two
</pre>
Inserting a blank line will end the first list and start another.
|
* one
* two
* three
** three point one
** three point two
|-
|Numbered list
|
<pre>
# one
# two<br />spanning more lines<br />doesn't break numbering
# three
## three point one
## three point two
</pre>
|
# one
# two<br />spanning more lines<br />doesn't break numbering
# three
## three point one
## three point two
|-
|Definition list
|<pre>
;item 1
: definition 1
;item 2
: definition 2-1
: definition 2-2
</pre>
|
;item 1
: definition 1
;item 2
: definition 2-1
: definition 2-2
|-
| Adopting definition list to indent text
|
<pre>: Single indent
:: Double indent
::::: Multiple indent</pre>
This workaround may be controversial from the viewpoint of accessibility.
|
: Single indent
:: Double indent
::::: Multiple indent
|-
| Mixture of different types of list
|
<pre>
# one
# two
#* two point one
#* two point two
# three
#; three item one
#: three def one
# four
#: four def one
#: this rather looks like the continuation of # four
#: and thus often used instead of <br />
# five
## five sub 1
### five sub 1 sub 1
## five sub 2

;item 1
:* definition 1-1
:* definition 1-2
:
;item 2
:# definition 2-1
:# definition 2-2
</pre>
The usage of <code>#:</code> and <code>*:</code> for breaking a line within an item may also be controversial.
|
# one
# two
#* two point one
#* two point two
# three
#; three item one
#: three def one
# four
#: four def one
#: this rather looks like the continuation of <code># four</code>
#: often used instead of <code><br /></code>
# five
## five sub 1
### five sub 1 sub 1
## five sub 2
;item 1
:* definition 1-1
:* definition 1-2
:
;item 2
:# definition 2-1
:# definition 2-2
|-
|-
|Preformatted text
|
<pre>
preformatted text is done with
a '''space''' at the
''beginning'' of the line
</pre>
This way of preformatting only applies to section formatting, and character formatting markups are still effective.
|
preformatted text is done with
a '''space''' at the
''beginning'' of the line
|}

== HTML ==
Some [[wikipedia:HTML|HTML]] tags are allowed in MediaWiki, for example <code><code></code>, <code><div></code>, <code><nowiki><span></nowiki></code> and <code><nowiki><font></nowiki></code>. These apply anywhere you insert them.

{| class="wikitable"
!Description
!You type
!You get
|-
| Strikethrough
| <code><del>Strikethrough</del></code> or <code><s>Strikethrough</s></code>
|<del>Strikethrough</del>
|- style="white-space:nowrap"
|Fixed width text
| <code><tt>Fixed width text</tt></code> or <code><code>source code</code></code>
| <tt>Fixed width text</tt>
|-
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text text text text text text text text text text text text
text text text text text text text text text text text text
<blockquote> quote quote quote quote quote quote </blockquote>
text text text text text text text text text text text text
</code>
| text text text text text text text text text text text text text text text text text text text text text text text text <blockquote> quote quote quote quote quote quote </blockquote> text text text text text text text text text text text text
|-
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Text can only be viewed in the edit window.
|

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|
<code><nowiki><pre>this way, all markups are '''ignored'''</pre></nowiki></code>
|
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|}

Help:Editing

Vandal:

This website has been created by [[User:Tim|Tim Styles]] using [http://www.mediawiki.org/ MediaWiki] software. It is hosted on a [[This Server|private server]] running Apache and MySQL on Debian Linux.

You are encouraged to create additional pages and edit existing ones. Please create an account to do this so that contributors can send each other messages.

Inside Electronics:About

2009-09-19T15:02:08Z

Vandal: New page: == About this site == This website has been created by Tim Styles using [http://www.mediawiki.org/ MediaWiki] software. It is hosted on a private server runni...

== About this site ==

This website has been created by [[User:Tim|Tim Styles]] using [http://www.mediawiki.org/ MediaWiki] software. It is hosted on a [[This Server|private server]] running Apache and MySQL on Debian Linux.

You are encouraged to create additional pages and edit existing ones. Please create an account to do this so that contributors can send each other messages.