Wednesday, November 21, 2018

Toshiba 40L2500, Toshiba 43L2500 – SMPS, Backlight inverter, LVDS, HDMI Audio schematic (circuit diagram)


Toshiba 43L2500- Schematic – Remote control, Back-light inverter, SMPS, Power&Gnd, LVDS, HDMI audio
REMOTE CONTROL schematic

HDMI AUDIO
LVDS
PWR&GND
SMPS schematic
BACKLIGHT INVERTER

Sunday, March 18, 2018

Electrolux ICON 36 inch Induction Cooktop – Error codes and causes


Electrolux ICON 36 inch Induction Cooktop – Error codes and causes – Induction cooking working principle – How to select cookware
How Induction Cooking Works
Induction cooking uses high frequency magnetic energy to heat the cooking utensil when it is placed over the induction coil. The induction fields have no affect on non magnetic surfaces such as paper, plastic, glass, ceramic, or non ferrous metals like aluminum, copper etc.
An induction cooking system requires two key components to operate.
The first component is the induction coil or element. This coil generates the magnetic induction field needed for induction cooking.
The second key component is the cooking utensil or pan with a bottom constructed of material that will attract a magnet.
If a magnet will not stick to the bottom of the pan it cannot be used for induction cooking.
When the proper type of pan is placed over the induction coil and the coil is energized it generates a field of magnetic waves that cause the bottom of the pan to heat.
Induction cooking is highly efficient since the en ergy created by the induction fields is not wasted by heating the glass and surrounding area of the cooktop surface.
Due to this increased efficiency the contents of the pan are heated more quickly than with gas burners or traditional radiant electric and coil elements.
Since the induction fields heat only into the cooking utensil the surrounding surface remains cooler than with traditional cooktops.
SELECTING PROPER COOKWARE
When selecting a pan to use for induction cooking it is important to know the correct size of the pan in order to determine the proper cooking zone to be used. The size of the magnetic portion of the pan bottom has a direct effect on the cooking performance and efficiency of the cooking zone. Pan design and construction vary widely as can be seen by the examples given below.
The following illustrations show some of the variations found in the construction of pan bottoms.
The overall diameter of this pan is 9 inches if measured at the top portion. The flat magnetic portion of the bottom (shaded in gray) is only 7 inches in diameter. This pan would be considered to be a 7 inch pan and should be used on a cooking zone appropriate for this size.
The bottom of this pan is a non magnetic alloy with an encapsulated inner core of magnetic material. The inner magnetic core is 1 inch smaller than the outer dimension of the flat pan bottom. This pan will have different cooking characteristics than the pan previously motioned. The effective cooking diameter of this pan is 6 inches.
Pan has a bottom of non magnetic alloy with a different shaped encapsulated inner magnetic core. The illustration shows that the core is thinner near the outer perimeter of the pan bottom and increases in thickness as it nears the center of the pan. This type of pan will have different cooking characteristics than a pan with a uniform core thickness.
ERROR CODES CAUSES AND SOLUTIONS 
ERROR 32 or 72
Low voltage output from 12V supply on filter board in the 3 cook zone induction module.
-Test all cables & connections on filter circuit board in the 3 zones induction module.
-Replace the filter circuit board in the 3 zones induction module .
-Replace generator circuit boards in the 3 zones induction module
ERROR 33 or 73
Improper voltage output from filter board in the 3 cook zone induction module. 34 Communication failure between filter board and power boards in the 3 cook zones induction module / left side cooking zones.
- Check cable between filter board X12 and generator board X10
- Replace the filter circuit board in the 3 zones induction module .
- Replace generator circuit board in the 3 zones induction module.
ERROR 35 or 75
AC input voltage too low in the 3 cook zones induction module.
- Verify AC input voltage at the cooktop input.
- Verify AC main input cables, screws and jumpers.
- Replace the filter board in the 3 zones induction module
ERROR 36
Communication error between main touch control and filter board.
(3 cook zones induction module / left side cooking zones)
- Verify all communication cables between user interface and both induction generator modules.
- Replace the filter circuit board in the 3 zones induction module .
- Replace generator circuit board (dual) in the 3 zones induction module .
ERROR 37
Heat sink temperature sensor break
(3 zones induction module / left side cooking zones)
-Replace the generator circuit board (LF/LRl) in the 3 zones induction module
ERROR 39
Configuration mismatch between the User Interface and the induction module (occurs when one of the 2 zone induction modules is replaced)
- To resolve this error, Press and hold WARM key, then press
Right Front zone ON key until beep (keep holding WARM) release Right Front zone ON key and press Left Front zone ON key until beep & config starts.
- Replace the filter circuit board in the 3 zones induction module .
ERROR 40
Communication failure between main touch control and filter board.
- Verify AC input at the (2 zones induction housing) (X50 / X52).
- Verify Lin Bus harness cable from X68/X67 on right side filter board (2 zones induction module) to X20 on the left side filter board (3 zones induction module).
- Verify the lin communication wire at the timer input at X4/X5 pin 2.
ERROR 45
Incoming power supply low voltage - Verify incoming power supply to cooktop
ERROR 51
LF Element temperature sensor break - Verify Element temperature sensor is correctly connected to the generator circuit board.
- Replace element if temperature sensor resistor value is not approximatively 1000 ohms (blue wires) at room temperature.
- Replace associated generator circuit board.
ERROR 52
LR Element temperature sensor break
ERROR 53
Center Element temperature sensor break
ERROR 54
RR Element temperature sensor break
ERROR 55
RF Element temperature sensor break
ERROR 60
Touch: general hardware error, keys - Replace main power touch control.
- Replace cook zones touch controls
ERROR 61
LF Element temperature sensor too hot - Verify cooktop ventilation is correct (airway and fan).
- Verify Element temperature sensor is correctly connect to the generator circuit board.
- Replace element if temperature sensor resistor value is not approximatively 1000 ohms (blue wires) at room temperature.
- Replace associated generator circuit board.
ERROR 62
LR Element temperature sensor too hot
ERROR 63
Center Element temperature sensor too hot
ERROR 64
RR Element temperature sensor too hot
ERROR 65
RF Element temperature sensor too hot
ERROR 71
Internal generator error, sync (center cooking zone)
- Test cables & connections on center generator circuit board (single).
- Replace the generator circuit board (single) in the 3 zones induction module .
ERROR 74
Internal generator error, communication (3 zones induction module)
- Check cable between filter board X13 and generator board X10
- Replace the filter circuit board in the 3 zones induction module
- Replace generator circuit board in the 3 zones induction module
ERROR 76
Communication Error in the 3 cook zones induction module for the center cooking zones.
- Verify all communication cables between user interface and both induction generator modules.
- Replace the filter circuit board in the 3 zones induction module .
- Replace generator circuit board for the center cook zone in the 3 zones induction module
ERROR 77
Heat sink temperature sensor break in the 3 cook zones induction module for the center cooking zones.
- Replace generator circuit board for the center cook zone in the 3 zones induction module
ERROR 80
Flash/Rom check fail (EEPROM data) - Replace main power touch control
ERROR 90
AC input voltage too high in the 2 cook zones induction module.
- Verify AC input voltage at the cooktop input.
- Verify AC main input cables, screws and jumpers.
- Replace the filter board in the 2 zones induction module
ERROR 91
Internal generator error, sync in the 2 cook zones induction module.
- Test cables & connections on right generator circuit board.
- Replace the right side generator circuit board
ERROR 92
12V on the service section too low in the 2 cook zones induction module.
- Test all cables & connections on filter circuit board in the 2 zones induction module.
- Replace the filter circuit board in the 2 zones induction module .
- Replace generator circuit boards in the 2 zones induction module
ERROR 93
5V overcurrent on the switched 5V on the service section (2 zones induction module).
ERROR 94
Internal generator error, communication in the 2 cook zones induction module.
- Verify cable between filter board X58 and generator board X10 on the 2 zones induction module.
- Verify the heat sink thermal cutout in the 2 zones induction module is connected and resistance is approximately 0 ohms.
- Replace the filter circuit board in the 2 zones induction module.
- Replace generator circuit board in the 2 zones induction module
ERROR 95
AC input voltage too low in the 2 cook zones induction module.
- Verify AC input voltage at the cooktop input.
- Verify AC main input cables, screws and jumpers.
- Verify the fuse resistance is approximatively 0 ohms in the 2 zones induction module.
- Replace the filter circuit board in the 2 zones induction module
ERROR 96
Communication Error in the 2 cook zones induction module.
- Verify all communication cables between user interface and both induction generator module.
- Replace the filter circuit board in the 2 zones induction module .
- Replace generator circuit board in the 2 zones induction module
ERROR 97
 Heat sink temperature sensor break in the 2 cook zones induction module.
- Replace the generator circuit board in the 2 zones induction module

Monday, January 29, 2018

Sharp LC-46D62U, Sharp LC-52D62U – How to troubleshoot the No-Audio problem

No audio [signal inputs] 
No audio HDMI, No audio in all modes 
No audio at digital broadcast signal reception / AT VHF/UHF broadcast
 No audio signal at digital audio output terminal [analog sound OK] 

How to troubleshoot for No Video problem – Sharp LC-46D62U, Sharp LC-52D62U – LCD Televisions

Sharp LC46D62U LCD TV - how to troubleshoot the problem - No video
Click on the troubleshooting charts to magnify
No video - 1
2. No video – component – S video input
3. No video – VHF/UHF broadcast signal reception
4. No video – HDMI input