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Showing posts with label to. Show all posts

Thursday, November 20, 2014

RS232 to RS485 Circuit

The new archetypal of RS485 advocate overcomes the RTS controlled botheration accomplished by our chargeless design. However, to do that requires a microprocessor, so there is a greater complication to the design. We advertise this unit, although currently we are attached our sales to barter who can pay by coffer alteration – which in absoluteness is bounded Australian companies.

This architecture has been almost agitation free, and if you crave quantities we can acclimate the adapter pinout to clothing your appliance – about again the accessory will no best fit the simple little D25 case in which you see it pictured.

RS232 to RS485 Circuit

* Data (vs RTS) controlled – does not rely on PC handshake timing

* DB25 RS232 connector compatible with PC

* TxD and RxD translated from RS232 to RS485

* Direction of transmission controlled by Data

* Handshake loop the PC connection so it works with all software

* RS485 signals output on D9 male with lots of Ground pins

* Indicator LED(s) to show communications traffic

* Line powered – powered by RS232 handshake lines

* RS485 Termination resistor not included

* Pullup/Pulldown resistors on RS485 to establish line-idle condition

* Baud rate is dipswitch selectable 1200 – 115.2k

Wednesday, November 12, 2014

Build a 500W Low Cost 12V to 220V Inverter

Attention: This Circuit is using high voltage that is lethal. Please take appropriate precautions

Using this circuit you can convert the 12V dc in to the 220V Ac. In this circuit 4047 is use to generate the square wave of 50hz and amplify the current and then amplify the voltage by using the step transformer.

How to calculate transformer rating
The basic formula is P=VI and between input output of the transformer we have Power input = Power output

For example if we want a 220W output at 220V then we need 1A at the output. Then at the input we must have at least 18.3V at 12V because: 12V*18.3 = 220v*1
So you have to wind the step up transformer 12v to 220v but input winding must be capable to bear 20A. 500W

Wednesday, November 5, 2014

How To Make a Two Line Intercom Cum Telephone Line Changeover

The circuit presented here can be used for connecting two telephones in parallel and also as a 2-line intercom. Usually a single telephone is connected to a telephone line. If another telephone is required at some distance, a parallel line is taken for connecting the other telephone. In this simple parallel line operation, the main problem is loss of privacy besides interference from the other phone. This problem is obviated in the circuit presented here. Under normal condition, two telephones (telephone 1 and 2) can be used as intercom while telephone 3 is connected to the lines from exchange. In changeover mode, exchange line is disconnected from telephone 3 and gets connected to telephone 2.

2-Line Intercom-Cum-Telephone Line Changeover Circuit Diagram

Telephone

For operation in intercom mode, one has to just lift the handset of phone 1 and then press switch S1. As a result, buzzer PZ2 sounds. Simultaneously, the side tone is heard in the speaker of handset of phone 1. The person at phone 2 could then lift the handset and start conversation. Similar procedure is to be followed for initiation of the conversation from phone 2 using switch S2. In this mode of operation, a 3-pole, 2-way slide-switch S3 is to be used as shown in the figure. In the changeover mode of operation, switch S3 is used to changeover the telephone line for use by telephone 2. The switch is normally in the intercom mode and telephone 3 is connected to the exchange line.

Before changing over the exchange line to telephone 2, the person at telephone 1 may inform the person at telephone 2 (in the intercom mode) that he is going to changeover the line for use by him (the person at telephone 2). As soon as changeover switch S3 is flipped to the other position, 12V supply is cut off and telephones 1 and 3 do not get any voltage or ring via the ring-tone-sensing unit. Once switch S3 is flipped over for use of exchange line by the person at telephone 2, and the same (switch S3) is not flipped back to normal position after a telephone call is over, the next telephone call via exchange lines will go to telephone 2 only and the ringtone-sensing circuit will still work. This enables the person at phone 3 to know that a call has gone through. If the handset of telephone 3 is lifted, it is found to be dead. To make telephone 3 again active, switch S3 should be changed over to its normal position.

Thursday, October 30, 2014

0 3 to 1 5V LED Flashlight Circuit Diagram

Its a little wisp of a circuit that allows you to drive a blue or white LED from a low voltage. Normally, if you want to light up a blue or white LED you need to provide it with 3 - 3.5 V, like from a 3 V lithium coin cell. But a 1.5 V battery like a AA cell simply will not work. But using the Joule Thief, it works like a charm. Not only does it work with a brand new battery, but it works until the battery is nearly dead-- down to 0.3 V. Thats well below the point where your other toys will tell you the battery is dead, so it can steal every last joule of energy from the battery (hence the name). To learn how to make one, watch the video, which is available in a variety of formats.

0.3 to 1.5V LED Flashlight Circuit Diagram

Wednesday, October 22, 2014

Smart Tracker track anything from your child to shoes

The EPE Minder consists of two type- approved transmitter units and a receiver. If either transmitter becomes separated from the receiver, a buzzer in the latter part will sound.
The receiver is fitted with a switch to allow the use of only one transmitter if required.

MIND HOW YOU GO

This system was originally designed as a two-channel child alarm (to protect either a single child or two children at the same time) but many other applications spring to mind. For example, one transmitter could be placed inside a briefcase and another in a coat pocket. If the user forgot to pick up either of these items and walked away, the buzzer would sound in the receiver. The receiver must be carried on the per- son in a way that would make it practically impossible to lose it. This could be done using a belt clip, for example. Note that it will not be possible to use this system if either the transmitter or receiver were placed inside metal containers or if there were substantial metallic “screening” objects between them.

OPERATING RANGE
The operating range may be adjusted according to the intended purpose. However, it does depend on conditions. Adjustment is carried out by means of “aerial link wires” on the circuit panels. With all these in place, the range of the prototype exceeds 12 metres in open air. It will also work throughout several rooms indoors if required. If the battery voltage in either transmit- ter or receiver falls below a certain value, or if a transmitter is switched off, a buzzer will sound. The specified batteries in the transmitters should provide several hun- dred hours of operation. Those in the receiver should provide around 100 hours.

PERSONAL CODE
The EPE Minder uses a system of digitally encoded low-power radio signals,
which pass from the transmitters to the receiver. The code is different for each transmitter so that the receiver is able to distinguish one from the other. Type-approved, pre-aligned transmitter and receiver modules that operate at 433MHz. are used. No traditional “radio” skills are needed and no licence is needed for their use in the UK.

TRANSMITTER CIRCUIT
The circuit diagram for a single trans- mitter unit is shown in Fig.1. Current is
supplied to the circuit from a 3V “coin” cell, B1, via on-off switch S2 and diode D1. The diode provides reverse-polarity protection. It is best to use the specified Schottky device which introduces a smaller forward voltage drop, and therefore less loss, than a conventional silicon diode (0·2V rather than 0·7V approximately). Capacitor C2 provides a small reserve of energy and pre- vents the supply voltage from fluctuating. This stabilises operation. A low power 7555 timer, IC1, is set up in a standard astable (pulse generator) con- figuration. While switched on, this produces a continuous train of on-off pulses at its output, pin 3.The choice of resistors R1, R2 and capacitor C1 provide one pulse per second for one of the transmitters (Unit A) and one pulse every 1·2 seconds for the other one (Unit B). In fact, the timings are slightly longer but it helps to consider them as above. Also, the on times are much longer than the off ones in each case. The purpose of this will be explained presently.

RECEIVER CIRCUIT

Receiver module, IC1, requires a supply of between 4·5V and 5·5V. The 6V nomi-
nal battery pack, B1, is brought within range by the forward drop of diode D5
(0·7V approx.) This diode also provides reverse-polarity protection. Capacitor C4 charges up and provides a small reserve of energy. This will be useful when the battery is nearing the end of its operating life. When the supply voltage falls below some 4V, the receiver stops working and the buzzer will sound. Below around 3V, the buzzer itself will not operate so it is important to check operation each time the units are used. Receiver IC1 should be of the a.m. (amplitude modulation) type as specified in the components list. As such, it will respond to the on-off pulses provided by the transmitter. The inexpensive super regenerative (rather than superhet) variety will be perfectly adequate. The low-power variants of these receivers have not been tested. Although for battery operation they would appear to be ideal, the standard type is more readily available.

The receiver may be considered as hav- ing separate r.f. (radio frequency) and a.f. (audio frequency) sections. These have individual supply inputs (pins 1, 10, 12 and 15 with some being duplicated). These are all connected together and decoupled using capacitor C1.

TESTING

Having completed the Receiver board, we can now commence testing all three
boards. It helps to minimise the Receiver “hold-off” time by adjusting preset VR1 fully anti-clockwise (as viewed from the left-hand side of the p.c.b.) and preset VR2 fully clockwise (as viewed from the right- hand side of the p.c.b.). Check that the Test link has been left unconnected to prevent IC4b signal from passing to transistor TR1’s base. Switch on Single Channel switch S3 so that Channel A is enabled. With On-Off switch S4 off, insert the batteries. Switch on. After a short delay, the buzzer WD1 should sound. Now place Transmitter A approximately
three metres away from the Receiver, insert the battery and switch on. The buzzer should begin to bleep every second. The same procedure is now repeated for Transmitter B. To do this, switch S3 off to disable Channel A and firmly twist together the ends of the Test link wires. It is not advisable to solder this connection unless the i.c.s are removed first. The buzzer should bleep at a slightly slower rate than for Transmitter A. It is unlikely that the time periods of the two transmitters will be the same (due to overlapping component tolerances).
However, if they are, one of them will need to be changed. Choose slightly higher values for resistors R1 and R2 to slow it down and vice versa. Remove the i.c.s before making any modifications.

HOLD-OFF TIME
When both transmitters have been test- ed, switch S3 on to enable both channels. presets VR1 and VR2 should now be adjusted to approximately mid-track posi- tion. This should provide a sufficient “hold off” time plus a small margin. The buzzer should now remain off and only sound when one of the transmitters is switched off or moved out of range. Leave them operating for several minutes. If the occasional spurious bleep is heard, increase the settings of VR1/VR2 to pre- vent this happening.

Thursday, October 2, 2014

How to Generate Stepped Voltage Circuit Diagram

This circuit converts an input signal into one that is composed of a number of discrete steps but which re- mains otherwise identical to the input signal.
Because the steps are of equal height, the harmonic con- tent of the output signal will be dependent upon the amplitude of the input signal. This chararacteristic is extremely useful in the making of electronic music. The circuit uses quantitised pulse- width modulation for the adding of the step—shaped input signal. Pulse-width modulation is obtained by comparing a triangular voltage with the analogue input signal by means of a comparator; the quantitising, that is the adding of the steps, takes place by replacing the triangular voltage with a stepped l voltage.

The stepped-voltage generator con- l sists of three gates, N1 . . . N3 and transistor Tl. N1 operates as an astable multivibrator, that oscillates at a frequency depending on the value of Cl and Rl. Transistor stage T1 fu nctions as a charger circuit: each time the output of N1 is logic l, the transistor transfers the charge on C2 to capacitor C4. During the next half cycle C2 is recharged via Dl. ln this way the voltage across C4 increases in discrete steps, the height of the steps being deter- mined by the ratio C2:C4. When the voltage across C4 rises above a certain value, N2 switches transistor T2 on via gate N3 and discharges capacitor C4. When the capacitor is completely discharged, N2 switches off T2 and C4 continues to charge again in discrete steps The stepped voltage is set to the inverting input of lC2 which is connected as a comparator.

Low- pass filter R4/C7 in the output of lC2 converts the pulse-width modu- lated signal back to an analogue one. The d.c. voltage level at the non- inverting input is set by potentiometer P2 to half the magnitude of the stepped voltage. The setting of P1 is dependent upon the input signal which must be attenuated such that the maximum value at the slider of P1 is always smaller than the maximum value ofthe stepped voltage. The number of steps can be selected by varying the value of C4. lt is possible to use a varicap in place of C4 with the varicap voltage being controlled by the music program or the input signal. Interesting and individual effects can be obtained in this way.

Monday, September 15, 2014

New 100W Inverter 12VDC to 220VAC circuit diagram

The following diagram is an inverter schema which will give you 220V AC 50Hz with maximum power of 100W. This inverter built using transistors both the square wave generator and the amplifier.The Q1 and Q2 used generate square wave. Q5-Q8 amplify the signal and the transformer to increase the AC/square wave current from 12VAC to 220V AC 50HZ.

100W Inverter 12VDC to 220VAC schema diagram

100W

Inverter PCB layout

Friday, September 12, 2014

Converter 12 Vdc to 230 Vac or Inverter

As shown in the Inverter schema diagram obove , Its used as the oscillator stage astable multivibrator contained in IC1, a CMOS 4047 (this cult series 40xx series) by varying the resistance value of R1 trimmer (220 k total resistance) can vary the oscillation frequency of 40 Hz to 70 Hz square wave, phase shifted by 180 °, Output pin 10-11 will drives two NPN transistors TR1-TR3, which in turn is fed to the TR2-TR4.
Converter 12 Vdc to 230 Vac or Inverter Schematic

The diodes DS2-DS3, mounted on the output transistors TR2-TR4 are used to protect against voltage surges appearing across the windings V 9 + 9 V transformer T1. For the transformer T1, I used an ordinary mains transformer (primary 230 V so) with a secondary dual 2 x 9 V.
inveter-component-pin-layout

inveter-component-pin-layout

Parts List:
R1 ……. 220 k trimmer
R2 ……. 330 k
R3 ……. 680
R4 ……. 2.2 k
R5 ……. 2.2 k
C1 ……. 4.7 nF polyester
C2 ……. 220 uF electrolytic
DS1 ….. 1N4004
DS2 ….. 1N4004
DS3 ….. 1N4004
DL1 ….. LED
TR1 ….. BC184 NPN
TR2 ….. NPN BDX53C
TR3 ….. BC184 NPN
TR4 ….. NPN BDX53C
IC1 …… 4047 CMOS
T1 …….. transformer sector 80 VA primary 230 V 0.35 A / Secondary 2 x 9 V 3.5 A
S1 ……. switch
Note :

Two final power TR2-TR4 should be mounted on the right size heatsink, otherwise they will overheat. You can choose from MJ4033 – MJ3007 or more, provided that the NPN.
The maximum power output that can be used depending on the size of the core of the transformer T1, the VA is: with 50 VA can be taken in the secondary 230 V 0.2 A (current consumed by the end will be 4 A) with 90 VA can be taken on the secondary 230 V 0.4 a (current consumed by the end will be 7 A).
To power the schema from the 12V battery, it will take over at least 1.8 millimeters in diameter, to avoid loss by Joule effect.

Wednesday, September 10, 2014

Simple C O alarm to foil P S Wiring diagram Schematic

This is a simple Capacitance operated alarm to foil purse snatchers. As long as touch plates (1) are touched together, the alarm is off. If not held for about 30 seconds, the alarm goes off. The schema can be disabled with switch or by touching the plates (2) The alarm is battery operated by a bicycle horn.

Simple C-O alarm to foil P S Circuit Diagram

Simple

Monday, September 8, 2014

DC Converter DC 12V to 24V Wiring diagram Schematic

DC Converter - DC 12V to 24V Circuit Diagram. A voltage converter is very useful, if it raises the voltage from 12v to 24v. Can be used to power low power equipment and even a battery charger Notebook. It works with a two-transistor oscillator, type astable which drives a power transistor controlled by a Zener diode. Thus is achieved with a good efficiency and stabilize the output voltage of 24V.

The coil should be wound on a ferrite core in the form of 1 cm and consists of 100 turns of wire of 1 mm section.

DC Converter - DC 12V to 24V Circuit Diagram

Wednesday, September 3, 2014

TL496 3 to 9 volt converter Wiring diagram Schematic

This is simple Simple TL496 3 to 9 volt converter Circuit Diagram. it uses the TL496 power supply controller, a coil and a electrolytic capacitor. The maximum output voltage is actually 8.6V and current is around 80mA.The input current (the current drawn from the batteries) is 405mA at the maximum output current. Without load the current consumption is 125µA and the batteries life is around 166 days.

TL496 3 to 9 volt converter Circuit Diagram

TL496

Saturday, August 23, 2014

The Reasons Why you should add a DVD Player to your Auto Sound System

When you are in the process of selecting your next auto sound system you might want to check out the systems that include other entertainment features such as games and DVD players. This may sound a little simplistic to some but if youve ever driven cross-country with children, you know what I mean when I say it is worth the investment to have one installed and have it installed correctly.

Many people will debate the wisdom of these devices and I will tell you quite frankly that I feel 100% that this is much safer than trying to deal with disgruntled children in the back that are literally fighting for your attention. If you want to talk about a distraction, I can think of few distractions that will top that while driving in holiday packed roads and less than favorable weather conditions. The truth of the matter is that anything that keeps the kiddies quiet for two hours at a pop has my vote for gadget or gizmo of the year.

I seriously recommend having a system installed however as this will limit not only the distraction to the driver but also the exposure of the lights and sounds to the driver as well. If you have a game system in stalled along with a DVD player and headphones to go with both I am sure you will find that you are driving along listening blissfully to your mom music as the kids in the back take turns playing games and watching DVDs. In fact, the most serious refereeing you are likely to need is over whose turn it is and how long that will last.

Now, I feel that it is very important to point out that this is not the only benefit to having an entertainment system installed for children that are traveling with you. Another very real benefit is the fact that you will also find that you are hearing less and less of the usual "are we there yet" and other generally disgruntled forms of questions from the backset. I also love the fact that the kids can often fall asleep to a DVD that they have seen a few dozen times which will bring a few more minutes of blissful silence as they snooze.

Another unexpected benefit I have found with my children and a DVD incorporated into an auto sound system is that my children are asking less often to stop for potty breaks. I always assumed that some of the frequent bathroom stops were boredom related and now Im fairly certain that my assumptions were correct. Another great thing that mommy does in order to keep things going smoothly is purchase a new DVD immediately prior to taking a long road trip. In addition to a new DVD that the little ones will not yet be tired of, I pull out some DVDs that might have been forgotten recently and not watched quite as often. This keeps the children very happy and quiet while mommy is able to concentrate on the road ahead and keeping everyone happy and safe while traveling.

Just remember that you should never rely on the scenery or the thrill of traveling in order to keep little ones happy and occupied on long trips. Endless questions and chatter are to be expected in order to alleviate boredom. In order to avoid these types of situations youll need more than happy music playing on the radio and really, how many times can you listen to "The Itsy Bitsy Spider" during a 12 hour road trip? Do yourself a favor when selection a really great auto sound system and make the necessary investment to add a really nice DVD player into the mix. Believe me I am the queen of cheap when it comes to trying to save money and will swear up and down that if you have children, this is one investment that is worth its weight in gold.

Thursday, August 21, 2014

3000 watt power inverter 12V DC to 230V AC

3000 watt power inverter 12V DC to 230V AC

Circuit

Circuit Diagram of 3000 watt power inverter 12V DC to 230V AC

Fig. 2: Sine-wave voltage and conventional square wave voltage with both 230 Volt rms

Fig. 3: Square wave voltage with duty cycle 25% for 230 Volt rms ("modified sine")

PCB Layout:3000 watt power inverter 12V DC to 230V AC

Component Placement: 3000 watt power inverter 12V DC to 230V AC

fig.: output voltage with no load or inductive load.

fig.: resistor 0,001 Ohm made of high-grade steel sheet metal

Control electronics | 3000 watt power inverter 12V DC to 230V AC

fig.: control electronics on strip hole plate (previous version) and PCB of the "professional edition"

Assembly of the mosfet-transistors on the heat sink | 3000 watt power inverter 12V DC to 230V AC

fig.: heat sink, mosfet transistors, connections.

Final assembly | 3000 watt power inverter 12V DC to 230V AC

fig.: 1500 VA inverter with 2 parallel transformers and 1000 VA inverter

Source:http://www.qsl.net

Wednesday, August 20, 2014

Converter RS232 to Arduino Wiring diagram Schematic

converter rs232 to arduino circuit diagram

The schema in this article is an RS232 converter, it is possible to connect an Arduino bootloader or your chip with a RS232 port. Here are two versions, one very simple and functional above and one below a little more sophisticated. The port 232 gives a bit more work than USB, but in case of equipment that only have this feature that is a good outlet.

Converter RS232 to Arduino Circuit Diagram

converter rs232 to arduino circuit diagram

Tuesday, August 19, 2014

1 25V to 25V To DC power supply

This is a DC power supply schema.This schema is based on LM317 Variable Regulator.This Regulator needs at least 28v(DC).Then it will out put 1.25v to 25v DC.So I suppose this would be an important schema for you all.

Note

# 5K ohm Change If you want to change the out put voltage
# This schema supplies 1.3A.

1000 Volt DC to DC Regulator Circuit

1000 Volt DC to DC Regulator Circuit

Input voltage high voltage DC-DC converter 12V AC to 800 mA of current and then converted to DC through a rectifier diode 1A. The output voltage converter circuit can be adjusted in the range 0-1000V DC. This high voltage DC-DC converter uses the transformer as a base and several other active components include 555 timer IC, CMOS IC 4001, IC voltage regulator 7805, some NPN transistors and a pair of IRF510 MOSFET logic as a final amplifier.

The operation of the DC high voltage dc is the same principle as written in previous articles. The difference shown is this scheme is a converter output voltage high and can be arranged.

If a particular transformer mentioned in the scheme is not available, each AC transformer with 117V primary specification, 63V AC CT secondary to work. In this case, operating the converter circuit in a transformer sweet spot, you may need to select a frequency of unity.

Friday, August 15, 2014

1 3V DC to 12 2V DC Regulator Power Supply

Power supply circuit to generate output below were variations between 1.3V DC to 12.2V DC with 1A current.
In addition, the power supply circuit is also equipped with over-current protection or shield against belebih flow. Power supply circuit is very simple, but the quality is quite good, made her basiskan regulator IC LM723 is a pretty legendary.

1.3V DC to 12.2V DC Regulator Power Supply

Description:
R2 to set the output voltage. The maximum current is determined by R3, over-current protection circuit inside the LM723 to detect the voltage on R3, if it reaches 0.65 V, the voltage output will be off her. So the current through R3 can not exceed 0.65 / R3 although output short-circuit in his.

C3 and C4 are ceramic capacitors, as much as possible directly soldered to the PCB, this is because the LM723 is prone to oscillation that is not cool.

LM723 works with 9.5V input voltage to 40 V DC and the LM723 can generate its own current of 150mA when the output voltage is not more than 6-7V under input voltage.

Specifications:
Output (value estimated):

Vmin = (R4 + R5) / (R5 * 1.3)
Vmax = (7.15 / R5) * (R4 + R5)

Imax = 0.65/R3

Max. Power on R3: 0.42/R3

Min. DC Input Voltage (pin 12 to pin 7): Vmax + 5

Component List:
B1 40V/2.5A
C1 2200uF (3300uF even better)
C2 4.7uF
C3 100nF
C4 1NF
C5 330nF
C6 100uF
Green LED D1
D2 1N4003
F1 0.2A F
F2 2A M
IC1 LM723 (in a DIL14 plastic package)
R1 1k
R2 Pot. 5k
R3 0.56R/2W

R4 3.3k
R5 4.7k
S1 250V/1A
T1 2N3055 on a heatsink 5K / W
TR1 220V/17V/1.5

source [link]

Thursday, August 14, 2014

Simple Ac To Dc Converter Wiring diagram Schematic

This is simple Ac To Dc converter schema diagram. By coupling two back-to-back diodes in series with an ac power schema, a voltage of about 1.4 Vpp can be obtained. This voltage is useful for exciting the primary coil of a small transformer. The voltage induced in the secondary coil can then be rectified and used to power solid-state control diagram. The forward-voltage drop of the diodes is inherently constant and stable over a wide range of ac-schema power variations.

The resulting voltage developed across the transformer windings is also free from variation that might be caused by changes in the schema`s current or voltage. In the schema, a lamp (LMP-1) is connected to the primary ac input line (Ll and L2) through a pair of inverse-parallel-connected power diodes (Dl and D2). As power flows to the lamp, a drop of about 0.7 V is alternatively developed across each of the diodes.

This voltage feeds the primary of a small transformer (Tl). T1 can be a small 8- to 500- transistor radio output, etc. This will deliver about 11 Vpp across its secondary winding. LMP1 can be a small 120-V lamp of 5 to 25 W, etc.

Ac To Dc Converter Circuit Diagram

Ac To Dc Converter Circuit Diagram

Simple Ac To Dc Converter Circuit Diagram

Wednesday, August 13, 2014

HOW TO ENTER SERVICE MODE ONIDA CTVs SMPS Wiring diagram Schematic

ONIDA COLOUR TELEVISION – 14XS / 20XS / 21IQ/ 14TVE / 20TVE / 21TVE/ 21BLACK FGL (FTG)/ 21FLAT3G

SERVICE MODE

NB: You should have its original remote control to enter Service Mode and adjust the data values. No Universal remote control, or others can be used for this purpose.

* The following display comes on the screen by pressing DISPLAY key and VSM key at the same time.

** [For Model: 21XSW4 Series: Press "VSM" and "+" On remote control.]

[1] FACTORY

[2] SERVICE MODE

* Press CURSOR UP OR DOWN key to be in Service menu.

* To select Service Menu parameters use CURSOR ▲/▼ key and to adjust these parameters use CURSOR ◄/► key.

H-LINE

1.To get H-line press VSM and DISPLAY Simultaneously.

2. Press CURSOR UP KEY to get R CUTOFF.

3. Press 0 to get H-line.

4. To come out of H-line again press 0.

VSM PRESET

There is FOUR VSM

PRESETS. (CARTOON,FILM/POP,NEWS,)

For the setting of individual VSM PRESETS

1. Press VSM and DISPLAY at the same time.

2. Press CURSOR DOWN key to get the Setting for the

VSM PRESET.

3. Press CURSOR DOWN key for the selection of each parameter.

4. Use CURSOR LEFT/RIGHT key for their setting as per the table given below.

5. Press VSM Key for selection of VSM PRESETS.

A. Digits specified for the various parameters (not specified as FIX) are closer to the values to be adjusted. The final adjustment should be as per the procedure specified.

B. Digits mentioned in the Service Menu should not be changed wherever ‘Fix’ is mentioned, elsewhere they are subject to change as per procedure specified

SMPS SCHEMATIC

CLICK ON THE PICTURES TO MAGNIFY

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