Wednesday, 15 February 2017

How to set up a home network server to share photos, music and movies in all your rooms

How to perform a (soft) restart (reset) or Power cycle on Sony's Android TV, Power cycle, How to hear the television sound through the speakers of a stereo receiver or home theater system
By setting up your computer or network storage device as a home network server, you can stream photos, music, and movies over your home network to a client, such as a TV, tablet, Smartphone, PlayStation or Blu-ray Player.
Both the server and the client need to support the home network function. To verify whether your Sony devices support the home network function, check the User Manual.
For Windows operating systems (depending on your operating system and preference) follow one of the links below to set up your home network server.
If using the Windows Media Player 12 software and the Windows7 or 8 or 8.1 operating system,
Follow this procedure.
For Macintosh and Linux operating systems, “Serviio” can be used. (Search for Serviio by Google)
Serviio is a free media server. It allows you to stream your media files (music, video or images) to renderer devices (e.g. a TV set, Bluray player, games console or mobile phone) on your connected home network.
There is also a paid “Pro edition” which further enhances the possibilities of sharing content in your connected household.
Serviio works with “many devices” from your connected home (TV, Playstation 3, XBox 360, smart phones, tablets, etc.). It supports profiles for particular devices so that it can be tuned to maximise the device's potential and/or minimize lack of media format playback support (via transcoding).
Serviio is based on Java technology and therefore runs on most platforms; including Windows, Mac and Linux (incl. embedded systems, e.g. NAS).
NOTES The third-party software recommended above are provided for your convenience and should be used at your own risk. Sony does not support nor guarantee the reliability of unsupplied 3rd party software.
After you set up the home network server, follow the set up instructions for your home network device to connect to the server.
How to perform a factory reset on Sony's Android TV
IMPORTANT: Performing a factory reset will wipe all of your data and settings on your TV.
Use the following steps if you would like to perform a factory reset on Sony's Android TV:
Press the HOME button to enter the home screen.
Using your standard remote control, press the down arrow button and navigate down the media shelves until you reach Settings.
On the TV shelf, scroll to the right using the right arrow button until you reach Storage & reset.
Navigate down using the down arrow button to Factory data reset.
Then select Erase everything.
TIP It is recommend creating a backup of your channel list onto a USB stick. This will allow you to easily restore your channel list after performing a factory reset. The following steps detail how to back up your channel list:
Save you channel list by exporting the data onto an empty USB stick
Perform a factory reset
Insert the USB stick with your channel list into your TV
Import your channel list back onto your TV
NOTES  The factory reset may take a few moments. Please wait until your're informed that the process has been completed 
If you had set a PIN-code on your TV, you will be asked to enter this PIN-code when you select the option "Erase everything"  
After the Factory Reset process completes successfully, your TV proceeds into the Initial Setup wizard. You will need to agree to the Google Terms of Service and Google Privacy Policy
The Touchpad pairing sequence will have to be activated again after a factory reset. 
Soft RESET by using the following procedure
Press and hold the Power button on the remote until the "Power off" message appears/ is displayed (approx. 5 seconds)
Release the Power button when "Power off" message appears on-screen
The TV will then turn itself off. Wait for a minute before turning it on again
IMPORTANT: Performing a (soft) reset does not erase your settings or downloaded apps; it just resets the TV's software.
How do I perform a (soft) restart (reset) or Power cycle on Sony's Android TV
If your TV isn't behaving properly - for example it's unresponsive or is stuck on a black screen - you may need to perform a (soft) reset.
Please use the following procedure
Soft reset
Press and hold the Power button on the remote until the "Power off" message appears/ is displayed (approx. 5 seconds)
Release the Power button when "Power off" message appears on-screen
The TV will begin a reboot sequence and will restart automatically (approx. 1 minute).
Power cycle
Alternatively, if your remote isn't working, you can perform a Power cycle by:
Unplugging the TV's AC power cord from the electrical outlet for approx. 2 minutes
Plugging the AC power cord back in to the electrical outlet
IMPORTANT Performing a reset does not erase your settings or downloaded apps; it just resets the TV's software.
[If you would like to revert your TV back to its original factory settings, you will need to perform a factory reset. Beware that, performing a factory reset will wipe all of your data and settings on your TV.]
How to hear the television sound through the speakers of a stereo receiver or home theater system
The two most common methods to allow the television sound be heard through the speakers of a stereo receiver or home theater system are
HDMI connection using the Audio Return Channel (ARC) feature
Connection using Coaxial Digital Cable, Optical Digital Cable, or Audio Cable
NOTES  Both devices being connected must support the ARC feature. HDMI ports may be marked with ARC to show which one to use.  If not, check your product manual or specifications to see if the ARC feature is supported.
If you find that your TV, A/V receiver or home theater system does not support ARC, you will need to use Option Coaxial Digital Cable, Optical Digital Cable, or Audio Cable to connect your devices.
Make sure that both devices support ARC functionality.
Make sure that the TV and receivers are connected using an HDMI cable.
Connect the cable to the HDMI port that is labeled ARC or the port identified in your manual that supports ARC.
Turn on the Control for HDMI setting on both the TV and the receiver or home theater system.
NOTE The steps required to enable the Control for HDMI feature may vary. Check the operating instructions supplied with the devices for model-specific steps.
Option 2  Connection using Coaxial Digital Cable, Optical Digital Cable, or Audio Cable
Connect a Coaxial Digital Cable, Optical Digital Cable, or Audio cable to the Audio Output jack of the television.
Connect the other end of the cable to the corresponding jacks on the stereo receiver or home theater system.
NOTE  Depending on the stereo receiver or home theater system being used, the audio input may be labeled TV INPUT or VIDEO INPUT.
Turn on the television.
Set the television sound to the desired setting of either Fixed or Variable.
Turn on the stereo receiver or home theater system.
Set the stereo receiver or home theater system to the proper input.

How to use the Bravia Sync Control for HDMI for Sony TVs

HDMI connectivity potential issues and how to solve them
In case you experience certain symptoms with HDMI connections such as:
Devices not detected
Other HDMI related symptoms
Try the following steps
Reconnect the HDMI cable
Disconnect your TV from the main AC electrical outlet (perform a Power Cycle for your TV) 
Disconnect any external devices from your TV and any AC electrical outlet (perform a Power Cycle for the connected device(s))
Wait a minute and then reconnect your TV and other devices together
Insert any AC power cords back into the electrical outlet
Alternatively, if the issue is still unresolved, please try the following sequence of procedures and verify after each step if the problem is solved:
Perform a Power Cycle
How to perform a (soft) restart (reset) or Power cycle on Sony's Android TV
If your TV isn't behaving properly - for example it's unresponsive or is stuck on a black screen - you may need to perform a (soft) reset.
Use the following procedure
Soft reset
Press and hold the Power button on the remote until the "Power off" message appears/ is displayed (approx. 5 seconds)
Release the Power button when "Power off" message appears on-screen
The TV will begin a reboot sequence and will restart automatically (approx. 1 minute)
Power cycle
Alternatively, if your remote isn't working, you can perform a Power cycle by:
Unplugging the TV's AC power cord from the electrical outlet for approx. 2 minutes
Plugging the AC power cord back in to the electrical outlet.
IMPORTANT: Performing a reset does not erase your settings or downloaded apps; it just resets the TV's software.
If you would like to revert your TV back to its original factory settings, you will need to perform a factory reset. Please be aware that, performing a factory reset will wipe all of your data and settings on your TV.
Factory Reset
To make the most out of your TV, we strongly recommend that you always keep it up-to-date with the latest firmware and software updates.. 
 Hot plugging: adding or removing devices from your TV while it is still running and have the Operating System (OS) recognise the change automatically.
Bravia Sync is a feature that enables your television's remote to control other Bravia Sync-compatible equipment, through the use of the HDMI CEC (Consumer Electronics Control) technology. Controlling other devices such as Blu-ray Disc Players or Home Theatre Systems becomes particularly convenient and easy once the communication between the devices is established, using Bravia Sync.
The control you will be granted - using the TV's remote - over the device you connected will depend on the type of device, but it will typically include the possibility to:
Turn ON or OFF the device
Navigate the menus of the device
Control playback operations
Control the volume setting of the device.
IMPORTANT: Your devices must be connected together using certified HDMI cables for this feature to work properly.
Controlling Bravia Sync-compatible equipment
Simply follow these steps to control Bravia Sync-compatible equipment using the TV’s remote:
First, you need to make sure the "Control for HDMI" setting is activated on your devices.
On the TV, press HOME, then select  > External Inputs > HDMI Set-up > Control for HDMI > ON. 
For other devices in your system, activate “Control for HDMI” in the settings. For details, refer to the instruction manual of the connected equipment.
Then, press SYNC MENU on the TV's remote, select [HDMI Device Selection] and select the desired equipment.
NOTE Bravia Sync-compatible equipment (except audio systems) will be listed as a new input source under [Inputs] in the Home Menu.
See the video below for more information and guidance on how to get started. (Note that the video is only available in English.)
Using the Sync Menu
The Sync Menu, reached by pressing the Sync Menu button on your TV's remote, offers the following items.
HDMI Device Selection
Enables the selection of Bravia Sync-compatible equipment to be controlled by the TV’s remote.
Device Control|
Displays the menu, options and title list of the connected equipment, or turns the equipment off.
Speakers
Switches the speaker output between the TV and the connected audio equipment.
TV Control
Displays the menu and options of the TV, or shows/hides the display items on the TV screen.
Return to TV
Returns to the TV tuner.

Sunday, 12 February 2017

How to replace the keyboard - Toshiba Tecra 9000 series laptop

Keyboard is the most venerable to get damaged in most of the laptops.  Replacing it can be done at home, if you have tools to do this work.
1. Turn the computer upside down.
2. Remove one M2.5x16 silver screw securing the keyboard on the bottom cover.
2. Turn the computer right side up and open the display panel.
3. Using the case separator, unlatch the keyboard holder at the top of the keyboard.
4. Remove two M2.5x2.8 silver screws securing the keyboard.
5. Lift out the keyboard and set it as shown above(Place an insulator between the keyboard and the LCD to prevent scratches on the LCD).
6. Disconnect the keyboard cable from PJ123 on the system board.
Do the reverse procedure to install a new keyboard

Tuesday, 7 February 2017

How to replace the Gas Control Assembly - Rinnai Tankless water heater

Replacing the Gas Control Assembly of Rinnai Tank-less Water heater - Different models
1. Turn off the gas supply.
2. Turn off the 120 V power supply.
3. Remove four screws securing the front panel. Remove front panel.
4. Move aside the ignition line by pulling it out from the clear plastic tubing.
5. Remove the six screws that attach the gas manifold to the combustion chamber (part of the heat exchanger assembly).
6. Remove the three screws that attach the gas manifold to the gas valve. Pull out the gas manifold.
7. Remove the screw on the gas valve holding the cable tie.
8. Remove the 3 screws attaching the gas connection to the underneath side of the water heater.
9. Pull the gas connection down to disconnect it from the gas control assembly.
10. Pull out the gas control assembly. Remove the wire harness from the 4 solenoids.
11. Install the gas valve and attach the wire harness to the 4 solenoids.
12. Install the gas connection with 3 screws
13. Replace the o-ring between the gas valve and the gas connection.
14. Replace the two circular gaskets (included in kit) in the gas valve.  Make sure that the ribbed side faces toward the manifold and that the flat side faces toward the gas valve.
15. Start the three screws that attach the gas manifold to the gas valve. Tighten the six screws that hold the gas manifold to the combustion chamber. Finish tightening the three screws that hold the gas manifold to the gas valve.
16. Attach ignition line.
17. Perform the Gas Pressure Setting Procedure
1. Turn off the gas supply.
2. Turn off the 120 V power supply.
3. Remove four screws securing the front panel. Remove front panel.
4. Indoor models only: Remove the temperature controller and bracket by sliding up and out of the slots. On the V53i remove the status monitor from the bottom of the manifold (one screw).
5. Pull out wire harness connector at the gas manifold assembly.
6. Move aside the ignition line by pulling it out from the clear plastic tubing.
7. Remove the six screws that attach the gas manifold to the combustion chamber (part of the heat exchanger assembly).
8. Remove the three screws that attach the gas manifold to the gas valve. Pull out the gas manifold.
9. Remove the four screws attaching the gas connection to the underneath side of the water heater.
10. Pull the gas connection down to disconnect it from the gas control assembly.
11. Pull out the gas control assembly. Remove the wire harness from the 4 solenoids.
12. Replace the O-ring (included in kit) where the assembly attaches to the gas connection. Make sure the old Oring is removed and discarded. Install the new gas control assembly
13. Remove old packing from gas manifold. Install the gas manifold using 2 new packings (included in kit) between the manifold and the heat exchanger.
14. Replace the two circular gaskets (included in kit) in the gas valve (Figure 5). Make sure that the ribbed side faces toward the manifold and that the flat side faces toward the gas valve.
15. Start the three screws that attach the gas manifold to the gas valve. Tighten the six screws that hold the gas manifold to the combustion chamber. Finish tightening the three screws that hold the gas manifold to the gas valve.
16. Attach wiring harness connector (black & brown wires) to the gas manifold.
17. For indoor models only, install the temperature controller and bracket or for the V53i install the status monitor.
18. Attach ignition line.
19. Perform the Gas Pressure Setting Procedure.
1. Turn off the gas supply.
2. Turn off the 120 V power supply.
3. Remove four screws securing the front panel.  Remove front panel.
4. On indoor models, remove the bracket holding the controller (1 screw). 
5. Move aside the ignition line by pulling it out from the clear plastic tubing. 
6. Disconnect 3 solenoid harnesses from the bottom of the manifold.
7. Remove the 5 screws that attach the gas manifold to the combustion chamber (part of the heat exchanger assembly). 
8. Remove the 2 screws that attach the gas manifold to the gas valve. These screws are machine screws and must be used at these locations. 
9. Pull out the gas manifold and remove the connector at the ignitor at the left side of the gas manifold.
10. Remove the 3 screws attaching the gas
connection to the under side of the water heater.
11. Remove the screw attaching the gas valve to the rear of the case. 
12. Pull the gas connection down to disconnect it from the gas control assembly.
13. Pull out the gas control assembly. Remove the wire harness from the 2 solenoids.
14. Remove old o-ring from gas connection and install new o-ring from kit.
15. Install the gas valve and attach the wire harness to the 2 solenoids.
16. Install the gas connection with 3 screws.
17. Replace the circular gasket (included in kit) in the gas valve. (Figure 5) Make sure that the ribbed side faces toward the manifold and that the flat side faces toward the gas valve.
18. Reconnect gray/gray harness to ignitor module before installing manifold.
19. Remove old packing from manifold and install new packing.
20. Start the 2 screws that attach the gas manifold to the gas valve. Tighten the 5 screws that hold the gas manifold to the combustion chamber. Finish tightening the 2 screws that hold the gas manifold to the gas valve.
21. Install screw attaching the gas valve to the back of the cabinet.
22. Install he 3 solenoid valve harness to the manifold.
23. Attach ignition line.
24. On indoor models, install the bracket with the controller.
25. Perform the Gas Pressure Setting Procedure.
1. Turn off gas supply.
2. Turn off water supply.
3. Turn off 120v power supply.
4. Remove four screws securing the front panel.  Remove front panel.
Remove controller assembly (indoor model only)
5. RC80HPi: Remove temperature controller.  Remove two screws for temperature controller bracket. Remove bracket.
VB Models: Slide controller bracket up and out of the slots on the cabinet.
Remove gas manifold and gas valve
6. Disconnect high tension cord from ignitor.
7. Disconnect flame rod wires. (yellow and red)
8. Remove six pan head screws from manifold (six screws outer edge) and three machine screws, at bottom of manifold, to gas valve.
9. Disconnect ignitor module harness, mounted on manifold. (gray/gray)
10. Disconnect the two solenoid wire harnesses at bottom of manifold. Remove manifold plate
11. Remove the four screws attaching the gas connection to the bottom side of water heater.
12. Pull the gas connection down to disconnect it from the gas control assembly.
13. Pull out the gas control assembly. Remove the three solenoid wire harnesses.
Install gas valve and gas manifold
14. Install the gas control assembly and connect the wire harness to the three solenoids.
15. Discard o-ring from gas connection. Install new o-ring from kit. Install the gas connection with four screws.
16. Replace the circular gaskets (included in kit) in the gas valve. Ensure that the ribbed side faces outward.
17. Remove old packing from gas manifold. Install new packing from kit to the manifold plate.
18. Reconnect two solenoid wire harnesses to manifold.
19. Reconnect ignitor module harness.
20. Start the three screws that attach the gas manifold to the gas valve. Install and tighten the six screws that hold the gas manifold to the combustion chamber. Tighten the three screws that hold the gas manifold to the gas valve.
21. Reconnect high tension cord to ignitor.
22. Reconnect flame rod wires. (yellow and red) Install temperature controller assembly (indoor model only)
23. RC80HPi: Install temperature controller bracket with two screws. Install temperature controller.  VB Models: Slide controller bracket into the slots on the cabinet.
Testing and close up
24. After calibrating the low and high gas pressure settings, install the front panel using four screws.
Turn off gas supply.
2. Turn off water supply.
3. Turn off 120v power supply.
4. Remove four screws securing the front panel.  Remove front panel.
Remove controller assembly (indoor model only)
5. Remove temperature controller. Remove two screws for temperature controller bracket. Remove bracket.
Remove gas manifold and gas valve
6. Disconnect high tension cord from electrode.  Remove one screw for electrode bracket. Remove bracket from manifold.
7. Disconnect flame rod wires. (yellow and red)
8. Remove seven pan head screws from manifold (six screws outer edge, one screw in middle) and three machine screws, at bottom of manifold, to gas valve.
9. Disconnect the four solenoid wire harnesses at bottom of manifold. Remove manifold plate.
10. Remove the three screws attaching the gas connection to the bottom side of water heater.
11. Pull the gas connection down to disconnect it from the gas control assembly.
12. Pull out the gas control assembly. Remove the two solenoid wire harnesses.
Install gas valve and gas manifold
13. Install the gas control assembly and connect the wire harness to the two solenoids.
14. Install the gas connection with three screws.
15. Replace the circular gasket (included in kit) in the gas valve. Ensure that the ribbed side faces outward.
16. Remove packing from manifold. Install new packing from kit to the gas manifold.
17. Start the three screws that attach the gas manifold to the gas valve. Install and tighten the seven screws that hold the gas manifold to the combustion chamber. Tighten the three screws that hold the gas manifold to the gas valve
18. Connect the four solenoid wire harnesses at the bottom of the manifold. Install electrode bracket with one screw to gas manifold. Connect high tension cord to electrode.
Install temperature controller assembly (indoor model only)
19. Install temperature controller bracket with two screws. Install temperature controller.
Testing and close up
20. After calibrating the low and high gas pressure settings (see next page), install the front panel using four screws.

Monday, 6 February 2017

How to check and replace the magnetron – Electrolux Microwave oven

Magnetron check, High voltage rectifier check, High voltage capacitor check, High voltage rectifier check and more..
REMEMBER TO CHECK 3D
1) Disconnect the supply.
2) Door opened, and wedged open.
3) Discharge high voltage capacitor.
WARNING AGAINST THE CHARGE OF THE HIGH VOLTAGE CAPACITOR
The high-voltage capacitor remains charged about 60 seconds after the oven has been switched off.
Wait for 60 seconds and then short-circuit the connection of the high-voltage capacitor (that is, of the connecting lead of the high-voltage rectifier) against the chassis with the use of an insulated screwdriver.
If the oven becomes inoperative Because of a blown fuse F2 (F8A) in the monitored latch switch SW1 – monitor switch SW3 circuit, check the monitored latch switch SW1 and monitor switch SW3 before replacing the fuse F2 (F8A).
MAGNETRON TEST
CARRY OUT 3D CHECK
Isolate the magnetron from high voltage circuit by removing all leads connected to the filament terminal.
To test for an open circuit filament use an ohmmeter to make a continuity test between the magnetron filament terminals, the meter should show a reading of less than 1 ohm.
To test for a short circuit filament to anode condition, connect ohmmeter between one of the filament terminals and the case of the magnetron (ground). This test should be indicated an infinite resistance. If a low or zero resistance reading is obtained then the magnetron should be replaced.
MICROWAVE OUTPUT POWER (IEC-60705-1988)
The following test procedure should be carried out with the microwave oven in a fully assembled condition (outer case fitted). Microwave output power from the magnetron can be measured by way of IEC 60705, i.e. it is measured by how much power the water load can absorb. To measure the microwave output power in the microwave oven, the relation of calorie and watt is used. When P(W) heating works for t(second), approximately P x t/4.187 calorie is generated. On the other hand, if the temperature of the water with V(ml) rises ΔT (°C) during this microwave heating period, the calorie of the water is V x ΔT.
The formula is as follows;
P x t / 4.187 = V x Δ T+0.55 x mc (T2-T0)
Our condition for water load is as follows:
Room temperature.....................around 20°C
Water load..........................................1000 g
Heating time........................................47 sec.
T2......................................Final Temperature
P (W) = 4.187 x V x ΔT / t
Power supply Voltage........Rated voltage
Initial temperature(T1).............10 ± 1°C
Mass of container (mc)....................330 g
P = 90 x ΔT + 0.55 x mc (T2-T0)/47
Measuring condition
1. Container
The water container must be a cylindrical borosilicate glass vessel having a maximum material thickness of 3 mm and an outside diameter of approximately 190 mm.
2. Temperature of the oven and vessel.
The oven and the empty vessel are at ambient temperature prior to the start of the test.
3. Temperature of the water The initial temperature of the water is (10 ± 2)°C.
4. Select the initial and final water temperature so that the maximum difference between the final water temperature and the ambient temperature is 5K.
5. Select stirring devices and measuring instruments in order to minimize addition or
removal of heat.
6. The graduation of the thermometer must be scaled by 0.1°C at minimum and an accurate thermometer.
7. The water load must be (1000 ± 5) g.
8. “t” is measured while the microwave generator is operating at full power. Magnetron filament heat-up time is not included.
NOTE: The operation time of the microwave ovens is “t + 3” sec. (3 sec. is magnetron filament heat-up time.)
Measuring method
1. Measure the initial temperature of the water before the water is added to the vessel. (Example: The initial temperature T1 = 11°C)
2. Add the 1 litre water to the vessel.
3. Place the load on the centre of the shelf.
4. Operate the microwave oven at HIGH for the temperature of the water rises by a value ΔT of (10 ± 2) K.
5. Stir the water to equalize temperature throughout the vessel.
6. Measure the final water temperature. (Example: The final temperature T2 = 21°C)
7. Calculate the microwave power output P in watts from above formula.
Room temperature ................T0 = 21°C Initial temperature............. T1 = 11°C
Temperature after (47+ 3) = 50 sec................................................... T2 = 21°C
Temperature difference Cold-Warm.................................................ΔT1 = 10°C
Measured output power
The equation is “P = 90 x ΔT” .................................. P = 90 x 10°C = 900Watts
The measured output power should be at least ± 15 % of the rated output power.
CAUTION: 1°C CORRESPONDS TO 90 WATTS. REPEAT MEASUREMENT IF THE POWER IS INSUFFICIENT
HIGH VOLTAGE TRANSFORMER TEST
High voltages and large currents are present at the secondary winding and filament winding of the high voltage transformer. It is very dangerous to work near this part when the oven is on. NEVER make any voltage measurements of the high-voltage circuits, including the magnetron filament.
Disconnect the leads to the primary winding of the power transformer.
Disconnect the filament and secondary winding connections from the rest of the HV circuitry. Using an ohmmeter, set on a low range, it is possible to check the continuity of all three windings. The following readings should be obtained:-
a. Primary winding ............................approximately 2 Ω
b. Secondary winding ....................approximately 127 Ω
c. Filament winding ..................................less than 1 Ω
If the reading obtained are not as stated above, then the power transformer is probably faulty and should be replaced.
HIGH VOLTAGE RECTIFIER TEST
Isolate the high voltage rectifier assembly from the HV circuit. The high voltage rectifier can be tested using an ohmmeter set to its highest range. Connect the
ohmmeter across the terminal B+C of the high voltage rectifier and note the reading obtained. Reverse the meter leads and note this second reading.
The normal resistance is infinite in one direction and more than 100 kΩ in the other direction
Isolate the high voltage rectifier assembly from the HV circuit. The asymmetric rectifier can be tested using an ohmmeter set to its highest range across the terminals A+B of the asymmetric rectifier and note the reading obtained.
Reverse the meter leads and note this second reading. If an open circuit is indicated in both direction then the asymmetric rectifier is good. If an asymmetric rectifier is shorted in either direction, then the asymmetric rectifier is probably faulty and must be replaced with high voltage asymmetric rectifier.
When the asymmetric rectifier is defective, check whether magnetron, high voltage rectifier, high voltage wire or filament winding of the high voltage transformer is shorted.
FOR MEASUREMENT OF THE RESISTANCE OF THE RECTIFIER, THE BATTERIES OF THE MEASURING INSTRUMENT MUST HAVE A VOLTAGE OF AT LEAST 6 VOLTS, BECAUSE OTHERWISE AN INFINITE RESISTANCE MIGHT BE SHOWN IN BOTH DIRECTIONS
HIGH VOLTAGE CAPACITOR TEST
A. Isolate the high voltage capacitor from the circuit.
B. Continuity check must be carried out with measuring instrument which is set to the highest resistance range.
C. A normal capacitor shows continuity for a short time (kick) and then a resistance of about 10 MΩ after it has been charged.
D. A short-circuited capacitor shows continuity all the time.
E. An open capacitor constantly shows a resistance about 10 MΩ because of its internal 10 MΩ resistance.
F. When the internal wire is opened in the high voltage capacitor, the capacitor shows an infinite resistance.
G. The resistance across all the terminals and the chassis must be infinite when the capacitor is normal.
If incorrect readings are obtained, the high voltage capacitor must be replaced.
HIGH VOLTAGE TRANSFORMER REMOVAL
1. CARRY OUT 3D CHECKS
2. Disconnect the main wire harness from the high voltage transformer.
3. Disconnect the filament leads and high voltage wire of high voltage transformer from high voltage capacitor and the magnetron.
Remove the two (2) screws and one (1) washer holding the transformer to the base plate.
5. Remove the transformer.
6. Now the high voltage transformer is free.
The line voltage is supplied to the primary winding of the high voltage transformer. The voltage is converted to about 3.3 volts A.C. output on the filament winding and high voltage of approximately 2000 volts A.C. on the secondary winding.
2. The filament winding voltage (3.3 volts) heats the magnetron filament and the high voltage (2000 volts) is sent to the voltage doubling circuit, where it is doubled to negative voltage of approximately 4000 volts D.C..
3. The 2450 MHz microwave energy produced in the magnetron generates a wavelength of 12.24 cm. This energy is channeled through the waveguide (transport channel) into the oven cavity, where the food is placed to be cooked.
4. When the cooking time is up, a single tone is heard and the relays RY1 + RY3 + RY6 go back to their home position. The circuits to the oven lamp, high voltage transformer, fan motor and turntable motor are cut off.
MAGNETRON REMOVAL
Disconnect the H.V. wire B (part of H.V. transformer) and filament lead of the transformer from the magnetron.
3. Carefully remove three (3) screws holding the magnetron to the waveguide, when removing the screws hold the magnetron to prevent it from falling.
4. Remove the one (1) screw holding the magnetron to the chassis support.
5. Remove the magnetron from the waveguide with care so the magnetron antenna is not hit by any metal object around the antenna.
6. Now, the magnetron is free.
WHEN REPLACING THE MAGNETRON, BE SURE THE R.F. GASKET IS IN PLACE AND THE MAGNETRON MOUNTING SCREWS ARE TIGHTENED SECURELY

Sunday, 5 February 2017

Electrolux Microwave oven – How to remove Grill heating elements, Monitor switch and Door

Models: MCC4060E, MO940CXE, EMC4090X, ZM40STX/XM40STN
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
GRILL HEATING ELEMENTS REMOVAL
> Disconnect wire leads from the thermal cut-out (GRILL).
> Remove the two (2)screws holding the two (2) terminals of the main wire harness to the two (2) grill heating elements.
> Remove the one (1) screw holding the exhaust duct to the oven cavity top plate.
>  Remove the exhaust duct from the oven cavity top plate.
>  By pushing the two (2) tabs holding the grill reflector to the oven cavity top plate, slide the grill reflector toward the magnetron. And then lift up the grill reflector and remove it. Remove the one (1) screw holding the grill heater angle to the grill heater reflector.
>  Straighten the two (2) tabs of the grill heater angle and remove the grill heater angle from the grill reflector.
>  Remove the two (2) screws holding the earth plate to the two (2) grill heating elements.
>  Remove the two (2) grill heating elements from the grill reflector.
> Now, the grill heating elements are free.
MONITORED LATCH SWITCH, MONITOR SWITCH AND STOP SWITCH REMOVAL
> Remove the control panel assembly referring to "CONTROL PANEL ASSEMBLY REMOVAL".
> Disconnect the leads from all switches.
> Remove the two (2) screws holding the latch hook to the oven cavity.
> Remove the latch hook.
> Remove the switch(es) from the latch hook by pushing the retaining tab backwards slightly and turning the switch(es) on the post.
> Now the switch (es) is free.
MONITORED LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH ADJUSTMENT
If the monitored latch switch, stop switch and monitor switch do not operate properly due to a mis-adjustment, the following adjustment should be made.
> Loosen the two (2) screws holding the latch hook to the oven cavity front flange.
> With the door closed, adjust the latch hook by moving it back and forward or up and down. In and out play of the door allowed by the latch hook should be less than 0.5 mm. The horizontal position of the latch hook should be placed where the monitor switch has activated with the door closed. The vertical position of the latch hook should be placed where the monitored latch switch and stop switch have activated with the door closed.
> Secure the screws with washers firmly.
> Make sure of the all switches operation. If the latch head has not pushed the plungers of the monitor switch with door closed, adjust the latch hook position. At that time, the latch head should have pushed the plungers of the monitored latch switch and stop switch. If the latch head has not pushed the plungers of the monitored latch switch and stop switch with door closed, loose two (2) screws holding latch hook to oven cavity front flange and adjust the latch hook position.
After adjustment, make sure of following:
1. In and out play of door remains less than 0.5 mm when latched position. First check the latch hook position, pushing and pulling upper portion of the door toward the oven face.  Then check the lower latch hook position, pushing and pulling lower portion of the door toward the oven face. Both results (play of the door) should be less
than 0.5mm.
2. The contacts (COM-NO) of the stop switch and the monitored latch switch open within 1.8mm gap between right side of cavity face plate and door when door is opened.
3. When the door is closed, the contacts (COM-NO) of the stop switch close.
4. When the door is closed the contacts (COM-NC) of the monitor switch and monitored latch switch open.  And the contacts (COM-NO) of their switches close.
5. Re-install outer case and check for microwave leakage around the door with an approved microwave survey meter.
DOOR REPLACEMENT
REMOVAL
1. Disconnect the oven from the power supply.
2. Push the door slightly.
3. Remove the door stopper from the choke cover.
4. Lift the door upwards.
5. Now, door assembly is free from oven cavity.
6. Insert an putty knife (thickness of about 0.5mm) into the gap between the choke cover and door frame as shown in Figure to free engaging parts.
8. Now choke cover is free.
9. Release choke cover from door panel.
DOOR PANEL
10. Remove the eight (8) screws holding the door panel to the door frame.
11. Now, door panel is free.
CAUTION: DO NOT DEFORM OR WARP THE TEETH OF COMB OF THE DOOR PANEL TO PREVENT MICROWAVE RADIATION EMISSION FROM THE DOOR LATCH HEAD AND SPRING
12. Slide latch head upward and remove it from door frame with releasing latch spring from door frame and latch head.
13. Now, latch head and latch spring are free.
DOOR HANDLE
14. Remove the two (2) screws holding the door handle to the door frame.
15. Remove the door handle from the door frame.
RE-INSTALL
1. Re-install the door handle to the door frame as follows.
a) Insert the door handle to the door frame.
b) Hold the door handle to the door frame with the two (2) screws.
2. Re-install the latch spring to the latch head.  Re-install the latch spring to the door frame.  Re-install latch head to door frame.
3. Re-install door panel to door frame.
4. Hold the door panel to the door frame with eight (8) screws.
5. Re-install choke cover to door panel by clipping into position.
RE-INSTALL
1. Re-install the door handle to the door frame as follows.
a) Insert the door handle to the door frame.
b) Hold the door handle to the door frame with the two (2) screws.
2. Re-install the latch spring to the latch head.  Re-install the latch spring to the door frame.  Re-install latch head to door frame.
3. Re-install door panel to door frame.
4. Hold the door panel to the door frame with eight (8) screws.
5. Re-install choke cover to door panel by clipping into position.
After any service, make sure of the following
1. Door latch heads smoothly catch latch hook through latch holes and that latch head goes through centre of latch hole.
2. Deviation of door alignment from horizontal line of cavity face plate is to be less than 1.0mm.
3. Door is positioned with its face pressed toward cavity face plate.
4. Check for microwave leakage around door with an approved microwave survey meter
Note: The door on a microwave oven is designed to act as an electronic seal preventing the leakage of microwave energy from oven cavity during cook cycle. This function does not require that door be air-tight, moisture (condensation)-tight or light-tight. Therefore, occasional appearance of moisture, light or sensing of gentle warm air movement around oven door is not abnormal and do not of themselves, indicate a leakage of microwave energy from oven cavity.
After adjustment of door latch switches, monitor switch and door are completed individually or collectively, the following leakage test must be performed with a survey instrument and it must be confirmed that the result meets the requirements of the performance standard for microwave oven.

Thursday, 2 February 2017

How to program Charter OCAP 4-Device Remote Control - Universal Electronics

PROGRAMMING DEVICE CONTROL
The C4000 Remote Control is preprogrammed to operate the cable box (converter)provided by your cable system, an RCATV, a Toshiba DVD player, and a Pioneer audio receiver. To control devices other than the default brands, perform the following steps; otherwise skip this
section.
NOTES: For control of a Combo device (for example, a TV/VCR combo), skip this section and perform the instructions on “Setting Up a Combo Unit”. Also refer to “Function Key Chart” on this page to find out which devices can be programmed onto each device key.
PROGRAMMING DEVICE CONTROL
The C4000 Remote Control is preprogrammed to operate the cable box (converter)provided by your cable system, an RCATV, a Toshiba DVD player, and a Pioneer audio receiver. To control devices other than the default brands, perform the following steps; otherwise skip this section.
NOTES: For control of a Combo device (for example, a TV/VCR combo), skip this section and perform the instructions on “Setting Up a Combo Unit”. Also refer to “Function Key Chart” on this page to find out which devices can be programmed onto each device key.
1. Turn on a device and, if applicable, insert video media, (e.g., cassette or disc).
NOTE: Please read steps 2 through 4 completely before proceeding.  Highlight or write down the codes and device you wish to program before moving on to step 2.
2. On the remote control, press a device key once(i.e., AUX, DVD, TV, CBL, or STB); it blinks once. Then press and hold SET UP until the selected mode key blinks twice.
3. Use the “Setup Codes for Televisions” on page 2) to locate the type of device and brand name and then enter the first five-digit code for your device. If performed correctly, the selected mode key blinks twice.
NOTE: If the selected mode key emits a long blink, the entry is invalid.
Repeat steps 2 through 3 and try entering the same code again.
4. Aim the remote control at the device and press POWER once. The device should turn off. If it does not, repeat steps 2 through 3, trying each code for your brand until you find one that works. If it still does not respond, try searching for the code (see “Searching for Your Code”).
NOTE: If the device does not have a POWER key, press the
4(Play) key.
Repeat steps 1 through 4 to reach device you want the remote control to operate. For future reference, write down each working device code.
SETTING UP A COMBO UNIT
If you own a combo unit such as a TV/DVD Combo or a TV/VCR Combo, you need to follow special steps to set it up. Perform the following instructions to control combo device:
1. For a TV/DVD Combo, turn on your TV/DVD Combo and insert a DVD. (For a TV/VCR Combo, insert a videocassette).
2. On the remote control, press DVD once; it blinks once. Then press and hold SET UP until the DVD key blinks twice.
3. Locate the brand name and enter the first five-digit code for your combo device (for example, TV/VCR). If you perform this procedure correctly, the DVD key blinks twice.
NOTE: If the DVD key did not blink twice after entering the code’s last digit, repeat steps 2 through 3 and try entering the same code again.
If you’ve located a setup code that works for your combo device (for example, a TV/DVD Combo) and a separate TV code is also listed, you’ll need to program this code into the remote control to access volume control (See “Programming Device Control”).
4. Aim the remote control at your combo device (for example, TV/DVD Combo) and press POWER once. The device should turn off.
If it does not respond, repeat steps 2 through 3, trying each code listed for your brand until you find one that works. If it still does not respond, try searching for the code (See “Searching for Your Code”).
SEARCHING FOR YOUR CODE
If your home entertainment device does not respond to the C4000 Remote Control after trying all of the codes listed for your brand, or if your brand is not listed at all, try searching for your code.
NOTE: Use the following device code digits to control a specific device:
0 = Cable (dedicated to cable only)
1 = TV
2 = DVD/VCR
3 = Audio
For example, to search for a code for your TV:
1. Turn on your TV.
2. On the remote control, press TV once; it blinks once. Then press and hold SET UP until the TV key blinks twice.
3. Enter 9 9 1. The TV key blinks twice.
4. Press 1 (the device code digit for your TV). The TV key blinks twice. Aim the remote control at the TV and press POWER once.
5. Press and release the CH+ key continuously, then stop when the TV turns off.
NOTE: In the search mode, the remote control sends IR codes from its library to the selected device, starting with the most popular code first.
6. Press POWER. The TV should turn on, and then press SET UP to lock in the code.
NOTE: If the TV does not turn on during step 6, then slowly press and release CH- to go back through the codes, then press SET UP when the TV turns on.
7. To search for the codes of your other devices, repeat steps 1
through 5, but substitute the appropriate key (e.g., AUX, DVD, CBL, or STB) for the device you are searching for.
CHECKING THE CODES
If you have set up the C4000 Remote Control by searching for your device code, you may need to find out which  five-digit code is operating your equipment.
For example, to find out which code is operating your TV:
1. On the remote control, press TV once; it blinks once. Then press and hold SET UP until the TV key blinks twice.
2. Enter 9 9 0. The TV key blinks twice.
3. To view the code for the first digit, press 1 once. Count the number of times the TV key blinks (e.g., 3 blinks = 3) and write down the number in the leftmost TV Code box above.
NOTE: If a code digit is 0, the selected mode key does not blink.
4. Repeat step 3 four more times for the remaining digits. Use 2 for the second digit, 3 for the third digit, 4 for the fourth digit, and 5 for the fifth digit. Finish writing down the code in the TV Code boxes above.
To check for othe rdevice codes ,repeat steps 1through 4,butsubstitute
the appropriate key (e.g., AUX, DVD, CBL, or STB) for the device you are checking. Write down the codes in the appropriate boxes..
PROGRAMMING CHANNEL CONTROL LOCK
By default, the remote control’s channel-control capabilities are locked to the cable converter. The affected keys are 1 through 0, CH+, CH-, and LAST. This guarantees that you do not inadvertently change a channel on your TV or VCR. However, you can de-activate this feature to allow full access to these keys in the TV and VCR modes.
Unlocking Channel Control
1. On the remote control, press CBL (or STB) once; it blinks once.  Press and hold SET UP until the CBL (or STB) key blinks twice.
2. Enter 9 7 3. The CBL (or STB) key blinks twice.
3. Press CH- once. The CBL (or STB) key blinks four times.
Now the remote control provides TV and VCR channel-control capabilities while in the TV or VCR mode.
Locking Channel Control to CBL
1. On the remote control, press CBL (or STB) once; it blinks once.  Press and hold SET UP until the CBL (or STB) key blinks twice.
2. Enter 9 7 3.The CBL (or STB) key blinks twice.
3. Press CH+ once. The CBL key blinks once.
4. Press CBL once. The CBL key blinks twice.
Now, regardless of what mode you select, the channel keys only change channels on your cable converter.
CHANGING VOLUME LOCK
Volume Lock allows you to control the volume through the device identified as having your primary speaker(s), regardless of which mode you are using. On the C4000RemoteControl,Global Volume Lock is set to TV, so you can control TV volume while in the AUX, DVD, TV or CBL mode. You can perform Individual Volume Unlock on a selected device to set its volume control for independent operation.
Unlocking Volume Control for a Single Device (Individual Volume Unlock)
1. Assuming Global Volume Lock is active, select a mode on the remote control that you want to unlock (e.g., CBL) and press it once. Next, press and hold SET UP until the device key blinks twice.
2. Enter 9 9 3. The last-selected device key blinks twice.
3. Press VOL- once. The last-selected device key blinks four times.
4. Repeat steps 1 through 3 for each device you want volume to be unlocked.
Now, after you select a device that has volume unlocked (e.g., CBL), pressing VOL+, VOL-,or MUTE, controls only that device’s volume.
Unlocking All Volume Control (Global Volume Unlock)
NOTE: Performing these instructions sets independent volume control for all programmed devices.
1. On the remote control, press and hold SET UP until the last selected device key blinks twice.
2. Enter 9 9 3. The last-selected device key blinks twice.
3. Press VOL+ once. The last-selected device key blinks four times.
Locking Volume Control To One Mode (Global Volume Lock)
1. On the remote control, press and hold SET UP until the last selected device key blinks twice.
2. Enter 9 9 3. The last-selected device key blinks twice.
3. Select a mode (e.g., TV or AUX) which you want to use to control the volume. The selected device key blinks twice.
Now, when you press VOL+, VOL-,or MUTE, the volume of the selected device (e.g., TV) is controlled regardless of mode.
USING THE SYSTEM ON/OFF KEY
1. Press SYSTEM ON/OFF once. Your devices turn on or off in the pre-programmed sequence.
NOTE: Only devices you have programmed the remote to control turn on or off sequentially. For example, if you have programmed control of your TV, but not your DVD player, SYSTEM ON/OFF does not turn your DVD player on or off.
USING KEYMOVER
The C4000 Control includes a Key-mover feature that allows you to map (or copy)keys from one mode (i.e., source mode) to another mode (i.e.,destination mode).
Programming Key  mover
For example, if your DVD player does not have volume control, you can map those keys (i.e., VOL+, VOL-, and MUTE) from the TV mode to DVD mode as follows:
1. On the remote control, press CBL (or STB) once; it blinks once.  Then press and hold SET UP until the CBL (or STB) key blinks twice.
2. Enter 9 9 4. The CBL (or STB) key blinks twice.
3. For the source mode, press a desired device key once (i.e., AUX,TV, DVD, CBL or STB). For this example, press TV once.
4. For the source key, press a key to be moved once. For this example press VOL- once.
5. For the destination mode, press a desired device key once (i.e., AUX, TV, DVD, or CBL or STB). For this example, press DVD once.
6. For the destination key, press a key to be moved once. For this example press VOL+ once.
7. Repeat steps 1 to 6 to move additional keys. For this example, repeat steps 1 to 6 two more times to map the remaining volume control keys, substituting VOL- and MUTE as source and destination keys in steps 4 and 6.
Upon completion of the above procedure, you can now use your C4000 Remote Controls to control the TV’s volume and mute in the DVD mode, as well as in the TV mode.
Restoring All Key mover Keys in a Single Mode
1. On the remote control, press CBL or STB once; it blinks once.  Then press and hold SET UP until the CBL key blinks twice.
2. Enter 9 9 4. The CBL (or STB) key blinks twice.
3. Press and release the mode key you want to clear twice. For example, to clear all Key mover keys for the TV mode, press and release TV twice.
Restoring a Single Key mover Key
1. On the remote control, press the MODE key once.
2. Press and hold SET UP until the last-selected mode key blinks twice (for example, TV).
3. Enter 9 9 4. The mode key blinks twice.
Press and release the device key twice. For example, to clear the CH+ key in TV mode, press and release CH+ twice.