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松下数码相机DMC-LZ2,DMC-LZ1维修手册

DMC-LZ2PP DMC-LZ2PL DMC-LZ2EB DMC-LZ2EG DMC-LZ2EGM DMC-LZ2GC DMC-LZ2GD DMC-LZ2GK DMC-LZ2GN DMC-LZ2GT DMC-LZ2SG

DMC-LZ1PP DMC-LZ1PL DMC-LZ1EB DMC-LZ1EG DMC-LZ1EGM DMC-LZ1GC DMC-LZ1GD DMC-LZ1GK DMC-LZ1GN DMC-LZ1GT

Vol.1

Colour DMC-LZ2

(S)...........Silver Type

(K)...........Black Type (PP,EB,EG,EGM and GC only)DMC-LZ1

(S)...........Silver Type

Digital Camera

ORDER NO.DSC0502001C0

B26

1 INTRODUCTION

4 1.1. INTRODUCTION

4 1.2. ABOUT LEAD FREE SOLDER (PbF)

1.3. IMPORTANT NOTICE 1:(Other than U.S.A.and

Canadian Market)

4 1.4. HOW TO DEFINE THE MODEL SUFFIX (NTSC or PAL

model)

5 2 SAFETY PRECAUTIONS

7 2.1. GENERAL GUIDELINES

7 2.2. LEAKAGE CURRENT COLD CHECK

7 2.3. LEAKAGE CURRENT HOT CHECK (See Figure 1.) 7 3 PREVENTION OF ELECTRO STATIC DISCHARGE (ESD)TO

ELECTROSTATICALLY SENSITIVE (ES)DEVICES 8 4 HOW TO REPLACE THE LITHIUM BATTERY

9 4.1. REPLACEMENT PROCEDURE 9 5 OPERATING GUIDE

11 6 SERVICE NOTES

13 6.1. WHEN REPLACING THE MAIN C.B.A. 13 6.2. SERVICE POSITION

6.3. HOW TO DISCHARGE THE CAPACITOR ON FLASH

TOP C.B.A.

14 6.4. CLEANING LENS AND LCD PANEL 14 7 ADJUSTMENT PROCEDURES

15 7.1. SERVICE FIXTURE AND TOOLS 16 8 ERROR CODE MEMORY FUNCTION 17 9 CONFIRMATION OF FIRMWARE VERSION 20 10 DISASSEMBLY PROCEDURE

21 10.1. DISASSEMBLY FLOW CHART 21 10.2. C.B.A.LOCATION

21 10.3. DIASSEMBLY PROCEDURE

22 10.4. DISASSEMBLY PROCEDURE FOR THE LENS 26 10.5. ASSEMBLY PROCEDURE FOR THE LENS

CONTENTS

Page

10.6. REMOVAL OF THE CCD 31

10.7. THE APPLYMENT OF GREASE METHOD 32

11 SCHEMATIC DIAGRAMS 33

11.1. OVERALL BLOCK DIAGRAM 33

11.2. WIRING CONNECTION DIAGRAM 34

11.3. FLASH TOP SCHEMATIC DIAGRAM 35

11.4. CCD SCHEMATIC DIAGRAM 35

11.5. LENS FLEX SCHEMATIC DIAGRAM 36

12 CIRCUIT BOARD ASSEMBLIES 37

12.1. CCD C.B.A. 37

12.2. FLASH TOP C.B.A. 38

12.3. LENS FLEX C.B.A. 39

13 EXPLODED VIEWS 40

13.1. FRAME&CASING SECTION 40

13.2. PACKING PARTS&ACCESSORIES SECTION 42

14 REPLACEMENT PARTS LIST 43

14.1. MECHANICAL REPLACEMENT PARTS LIST 43

14.2. ELECTRICAL REPLACEMENT PARTS LIST 45 3

1 INTRODUCTION

1.1. INTRODUCTION

This service manual contains technical information,which allow service personnel’s to understand and service this model. Please place orders using the parts list and not the drawing reference numbers.

If the circuit is changed or modified,the information will be followed by service manual to be controlled with original service manual.

1.2. ABOUT LEAD FREE SOLDER(PbF)

Distinction of PbF PCB:

PCBs(manufactured)using lead free solder will have a PbF stamp on the PCB.

Caution:

·Pb free solder has a higher melting point than standard solder,Typically the melting point is50-70°F(30-40°C)higher.

Please use a high temperature soldering iron.In case of soldering iron with temperature control,please set it to700±20°F (370±10°C)

·Pb free solder will tend to splash when heated too high(about1100°F/600°C).

When soldering or unsoldering,please completely remove all of the solder on the pins or solder area,and be sure to heat the soldering points with the Pb free solder until it melts enough.

1.3. IMPORTANT NOTICE1:(Other than U.S.A.and Canadian Market)

1. The service manual does not contain the following information,because of the impossibility of servicing at component level.

a. Schematic diagram,Block Diagram and https://www.wendangku.net/doc/275689843.html,yout of Main C.B.A.

b. Parts list for individual parts of Main C.B.A.

When a part replacement is required for repairing Main C.B.A.,replace as an assembled parts.(Main C.B.A.)

2. The following category is/are recycle module part.please send it/them to Central Repair Center.

·MAIN C.B.A.(DMC-LZ2:VEP56019B,DMC-LZ1:VEP56019A):Excluding replacement of Lithium Battery

1.4. HOW TO DEFINE THE MODEL SUFFIX (NTSC or PAL model)

There are seven kinds of DMC-LZ2/LZ1,regardless the colours. · DMC-LZ2S · DMC-LZ2/LZ1PP

· DMC-LZ2/LZ1EB/EG/EGM/GN · DMC-LZ2GC/SG,LZ1GC · DMC-LZ2/LZ1GD · DMC-LZ2/LZ1GT · DMC-LZ2/LZ1PL/GK

(DMC-LZ2S is exclusively Japan domestic model.)

What is the difference is that the “INITIAL SETTING”data which is stored in Flash ROM mounted on Main C.B.A.

1.4.1. Defining methods:

To define the model suffix to be serviced,refer to the caution label which is putted on the bottom side of the

Unit.

NOTE:

After replacing the MAIN C.B.A.,be sure to achieve adjustment.

The adjustment instruction is available at “software download”on the “CS-Web from AVC”web-site in “TSN system”.

1.4.

2. INITIAL SETTINGS:

When you replace the Main C.B.A.,be sure to perform the initial settings after achieving the Adjustment,by ordering the following procedure in accordance with model suffix.

· Step 1.The temporary cancellation of factory setting:

Set the mode dial to “Normal Picture

(Red camera mark)”.

While keep pressing Optical Image Stabilizer and “UP of Cross key”simultaneously,turn the Power on.

· Step 2.The cancellation of factory setting:

Set the mode dial to “Playback ”.

While keep pressing Optical Image Stabilizer

and “UP of Cross key”simultaneously,turn the Power off.

· Step 3.Turn the Power on:

Set the mode dial to “Normal Picture (Red camera mark)”,and then turn the Power on. · Step 4.Display the INITIAL SETTING:

While keep pressing MENU

and “RIGHT

of Cross key”simultaneously,turn

the Power off. · Step 5.Set the INITIAL SETTING:

Select the area with pressing “UP /DOWN

of Cross key”,and then press the “

RIGHT

of Cross key”.

The only set area is displayed,and then press the "RIGHT of Cross key"after confirmation.(The unit is powered off

automatically.)

Confirm the display of “PLEASE SET THE CLOCK”in English when the unit is turned on again.(For China and Taiwan market,the display shows “PLEASE SET THE CLOCK”in Chinese.) · NOTE:

The display shows “SET THE CLOCK”when turn the Power on again.Connect the unit to PC with USB cable and is detected as removable media.1)As for your reference Default setting condition is given in the following table. · Default setting (After “INITIAL SETTINGS”)

2 SAFETY PRECAUTIONS

2.1. GENERAL GUIDELINES

1. IMPORTANT SAFETY NOTICE

There are special components used in this equipment

which are important for safety.These parts are marked by

in the Schematic Diagrams,Circuit Board Layout,Exploded Views and Replacement Parts List.It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent X-RADIATION,shock,fire,or other hazards.Do not modify the original design without permission of manufacturer.

2. An Isolation Transformer should always be used during the

servicing of AC Adaptor whose chassis is not isolated from the AC power https://www.wendangku.net/doc/275689843.html,e a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks.It will also protect AC Adaptor from being damaged by accidental shorting that may occur during servicing. 3. When servicing,observe the original lead dress.If a short

circuit is found,replace all parts which have been overheated or damaged by the short circuit. 4. After servicing,see to it that all the protective devices such

as insulation barriers,insulation papers shields are properly installed. 5. After servicing,make the following leakage current checks

to prevent the customer from being exposed to shock hazards.

2.2. LEAKAGE CURRENT COLD

CHECK

1. Unplug the AC cord and connect a jumper between the two

prongs on the plug. 2. Measure the resistance value,with an ohmmeter,between

the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads,connectors,control shafts,etc.When the exposed metallic part has a return path to the chassis,the reading should be between 1M ?and 5.2M ?.When the exposed metal does not have a return path to the chassis,the reading must be infinity.

2.3. LEAKAGE CURRENT HOT

CHECK (See Figure 1.)

1. Plug the AC cord directly into the AC outlet.Do not use an

isolation transformer for this check. 2. Connect a 1.5k ?,10W resistor,in parallel with a 0.15μF

capacitor,between each exposed metallic part on the set and a good earth ground,as shown in Figure 1. 3. Use an AC voltmeter,with 1k ?/V or more sensitivity,to

measure the potential across the resistor. 4. Check each exposed metallic part,and measure the

voltage at each point. 5. Reverse the AC plug in the AC outlet and repeat each of the

above measurements. 6. The potential at any point should not exceed 0.75V RMS.

A leakage current tester (Simpson Model 229or equivalent)may be used to make the hot checks,leakage current must not exceed 1/2mA.In case a measurement is outside of the limits specified,there is a possibility of a shock hazard,and the equipment should be

repaired and rechecked before it is returned to the customer.

3 PREVENTION OF ELECTRO STATIC DISCHARGE(ESD)

TO ELECTROSTATICALLY SENSITIVE(ES)DEVICES

Some semiconductor(solid state)devices can be damaged easily by static electricity.Such components commonly are called Electrostatically Sensitive(ES)Devices.Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor"chip"components.The following techniques should be used to help reduce the incidence of component damage caused by electro static discharge(ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly,drain off any ESD on your

body by touching a known earth ground.Alternatively,obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices,place the assembly on a conductive surface such as

aluminum foil,to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an antistatic solder removal device.Some solder removal devices not classified as"antistatic(ESD protected)"can

generate electrical charge sufficient to damage ES devices.

5. Do not use freon-propelled chemicals.These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it.(Most

replacement ES devices are packaged with leads electrically shorted together by conductive foam,aluminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device,touch the protective material

to the chassis or circuit assembly into which the device will be installed.

CAUTION:

Be sure no power is applied to the chassis or circuit,and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices.(Otherwise harmless motion such as the

brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity(ESD) sufficient to damage an ES device).

4 HOW TO REPLACE THE LITHIUM BATTERY

4.1. REPLACEMENT PROCEDURE

1. Remove the MAIN C.B.A.(Refer to Disassembly Procedures.)

Remove the Lithium battery (Ref.No.“Z9101”at foil side of MAIN C.B.A.)and then replace it into new one.

NOTE:

This Lithium battery is a critical component.

(Type No.:ML-614S/ZT Manufactured by Matsushita Battery Industrial Co.,Ltd.)It must never be subjected to excessive heat or discharge.

It must therefore only be fitted in requirement designed specifically for its use.Replacement batteries must be of same type and manufacture.

They must be fitted in the same manner and location as the original battery,with the correct polarity contacts observed.Do not attempt to re-charge the old battery or re-use it for any other purpose.It should be disposed of in waste products destined for burial rather than incineration.

NOTE:

Above caution are also applicable for below batteries which is for DMC-LZ2and DMC-LZ1all series,as well. 1. AA Oxyride batteries 2. AA Alkaline batteries

3. AA Rechargeable Ni-MH (nickel-metal hydride)batteries

5 OPERATING

GUIDE

6 SERVICE NOTES

6.1. WHEN REPLACING THE MAIN C.B.A.

After replacing the MAIN C.B.A.,be sure to achieve adjustment.

The adjustment instruction is available at “software download”on the “CS-Web from AVC”web-site in “TSN system”,together with Maintenance software.

6.2. SERVICE POSITION

This Service Position is used for checking and replacing https://www.wendangku.net/doc/275689843.html,e the following Extension cables for servicing.

NOTE:

· When the Main C.B.A.is energized,be sure to connect the LCD back light connector (P9002)to the Main C.B.A..

If the Main C.B.A.is energized that the LCD back light connector (P9002)is opened,it may be caused to the case not only the power does not turn on but also transisitor (Q1070)is broken.

CAUTION

1. Be sure to discharge the capacitor for flash,which is connected with FLASH TOP C.B.A.

(Refer to “HOW TO DISCHARGE THE CHARGING CAPACITOR ON FLASH TOP C.B.A.”.)

6.3. HOW TO DISCHARGE THE CAPACITOR ON FLASH TOP C.B.A.

CAUTION:

1. Be sure to discharge the capacitor on FLASH TOP C.B.A..

2. Be careful of the high voltage circuit on FLASH TOP C.B.A.when servicing.[Discharging Procedure]

1. Refer to the disassemble procedure and Remove the necessary parts/unit.

2. Put the insulation tube onto the lead part of Resistor (ERG5SJ102:1k ?/5W).

(an equivalent type of resistor may be used.)

3. Put the resistor between both terminals of capacitor on FLASH TOP C.B.A.for approx.5seconds.

4. After discharging,confirm that the capacitor voltage is lower than 10V using a

voltmeter.

6.4. CLEANING LENS AND LCD PANEL

Do not touch the surface of lens and LCD Panel with your hand.When cleaning the lens,use air-Blower to blow off the dust.

When cleaning the LCD Panel,dampen the lens cleaning paper with lens cleaner,and the gently wipe the their surface.Note:

A lens cleaning paper and lens cleaner are available at local camera shops and market place.

7 ADJUSTMENT PROCEDURES

Even if the MAIN C.B.A.is replaced as a unit,it must be achieved the adjustment and factory setting.The adjustment in this unit is separated two types as shown below.

The adjustment instruction is available at "Software download"on the CS-Web from AVC"web-site in "TSN System". 1. Main unit adjustment:All adjustments except for LCD adjustment.

This unit mounts the adjustment software for main unit,it wouldn’t need the connection between the PC and this unit with USB

cable.

2. LCD adjustment:Adjustment for LCD.

It need the connection between the PC and this unit with USB cable.

The adjustment instruction is available at "Software download"on the CS-Web from AVC"web-site in "TSN System",together

with maintenance

software.

7.1. SERVICE FIXTURE AND TOOLS

The following Service Fixture and tools are used for checking and servicing this

unit.

8 ERROR CODE MEMORY FUNCTION

1. General description

This unit is equipped with history of error code memory function,and can be memorized 32error codes in sequence from the

latest.When the error is occurred more than 32,oldest error is overwritten in sequence.

The error code is not memorized when the power supply is shut down forcibly (when the unit is powered on by the battery,the battery is pulled out)because the error code is memorized to FLASH ROM when the unit is powered off. 2. How to display

The error code can be displayed by the following procedure:

Before perform the error code memory function,connect the AC adaptor or insert the battery.

Since this unit has built-in memory,this error code memory function can be performed without inserting SD card. · 1.The temporary cancellation of factory setting:

Set the mode dial to “Normal Picture (Red camera mark)”.

While keep pressing Optical Image Stabilizer and “UP of Cross key”simultaneously and hold them,turn the Power on.

· 2.The display of error code:

Press Optical Image Stabilizer ,MENU

and “LEFT

of Cross key”simultaneously with the step 1condition.

The display is changed as shown below when the above buttons is pressed simultaneously.Normal display →Error code display →Operation history display →

Normal display →.....

Example of Error Code Display

· 3.The change of display:

The error code can be memorized 32error codes in sequence,however it is displayed 5errors on the LCD.Display can be changed by the following procedure:"UP

or DOWN of Cross key":It can be scroll up or down one.

"LEFT

or RIGHT

of Cross key":It can be display last 5error or another 5error.

· 4.How to read the error code:

One error code is displayed for 8bit,the contents of error codes is indicated the table as shown below.

·5.How to returned to Normal Display:

Turn the power off and on,to exit from Error code display mode. NOTE:

The error code can not be initialized by the unit only.

9 CONFIRMATION OF FIRMWARE VERSION

The Firmware version can be confirmed by ordering the following steps:. · Step 1.The temporary cancellation of factory setting:

Set the mode dial to “Normal Picture

(Red camera mark)”.

While keep pressing Optical Image Stabilizer and “UP of Cross key”simultaneously.turn the power on with inserting the SD memory card which has a few photo data. · Step 2.Confirm the version:

Set the mode dial to “Playback ”.

Press Optical Image Stabilizer and “DOWN

of Cross key”simultaneously.(No need to keep pressing.)

(The version information is displayed on the LCD with green colour letters.)

CAUTION:

The version information does not display if the LCD has switched to LCD with indication already.

In this

case,press DISPLAY

to switch to LCD with indication.

· The firmware version and EEPROM version can be confirmed with the information (1).

电饭煲的维修方法

电饭煲是家里的常见家电，我们基本天天都会使用，那么时间久了，电饭煲就可能出现一些问题，那么这个时候，我们应该怎么办呢？下面就一起来看看吧。电饭煲的常见维修方法。电饭煲的维修方法故障一：插上电源插头，电源保险丝马上熔断 1、电饭煲电源插座内进水或米汤，造成短路。这种情况可以将插座内吹干水分后继续使用 2、电饭煲电源插座或插头由于长期使用，其表面老化造成短路。这种情况可用细砂纸将其表面碳化层磨掉，并用酒精擦干净。就可继续使用。故障二：煮好饭后不能保温此故障可能是保温开关的常闭触点表面脏污或烧蚀，使其触点接触电阻过大，造成触点闭合而电路不通，发热管不发热，电饭煲不能保温。此时可用细砂纸将触点表面清理干净后，镀上一层锡。若仍不保温可更换保温开关。

故障三：煮煳饭此故障可能是保温开关的常闭触点烧结粘在一起，虽然饭已经煮好，限温器也跳下，但保温开关仍在继续给发热管通电，饭就煳了。此时可用小刀把触点分开，然后用细砂纸将触点表面清理干净。故障四：煮夹生饭此故障一般是限温器内的永久磁环磁力减弱造成的。此时可拆开电饭煲的限温器检查磁环是否断裂、吸力如何。若永久磁环断裂则必须更换相同型号的限温器；若吸力减小，可调节限温器上的调温螺钉，每次调节1/4圈，调节一次试煮饭一次。故障五：不能煮饭 1、源导线断路。用万用表的欧姆挡检查电源导线 2、限流电阻熔断。此时可用万用表的欧姆挡检查该电阻。若该电阻熔断必须用同型号限流电阻代替，不能直接用导线代替； 3、发热管烧断。没有限流电阻的电饭煲长时间工作，烧断发热管。此时用万用表的欧姆挡检查发热管，若断路则必须连同发热盘一起更换。闪速到家以家电、家居生活为主营业务方向，提供小家电、热水器、空调、燃气灶、油烟机、冰箱、洗衣机、电视、开锁换锁、管道疏通、化粪池清理、家具维修、房屋维修、水电维修、家电拆装等保养维修服务。

三角牌电饭锅简单维修

————————————————————————————————作者：————————————————————————————————日期：

三角牌电饭锅简单维修普通三角牌电饭煲的结构普通电饭煲主要由发热盘、限温器、保温开关、杠杆开关、限流电阻、指示灯、插座等组成。 1.发热盘：这是一个内嵌电发热管的铝合金圆盘，内锅就放在发热盘上，取下内锅即可看到，这是电饭煲的主要发热元件。 2.限温器：又叫磁钢，内部装有一个永久磁环，上有弹簧，可以按动，位置在发热盘的中央。煮饭时，靠永久磁环的吸力吸住内锅的锅底。当煮米饭时，锅底的温度不断升高，永久磁环的吸力随温度的升高而减弱，当内锅里的水被蒸发掉，锅底的温度达到103±2℃时，磁环的吸力小于其上的弹簧弹力，限温器被弹簧拉下，压动杠杆开关，切断电源与发热管之间的一条通路。 3、保温开关：又称恒温器。它由一个储能弹簧片、一对常闭触点（该触点一端接电源另一端接发热管）、一对常开触点（该触点一端接电源另一端接保温指示灯）、一个双金属片组成。煮饭时，锅内温度升高，由于构成双金属片的两片金属的受热伸缩程度不同，结果使双金属片向上弯曲。当温度达到80℃以上时，向上弯曲的双金属片可以推开保温开关的常开触点，从而切断发热管与电源的一条通路；当锅内温度下降到80℃以下时，双金属片逐渐冷却，弯曲度减少，逐渐回到原位置，常闭触点在弹性作用下闭合，使发热管通电发热，实现电饭煲的保温功能。限流电阻限温器杠杆开关控温开关 4、杠杆开关：该开关完全是机械结构，有两对常开触点，其中一个触点接在电源与发热管之间；另一个触点接在电源与保温指示灯之间。煮饭时，按下此开关，给发热管接通电源，饭好时，限温器弹下，压动杠杆开关，使该开关弹起，使发热管仅受保温开关控制。 5、限流电阻：外观黑色，像2W的碳膜电阻，接在发热管与电源之间，起着保护发热管的作用。限温器只有在内锅里的水完全烧干时才会自动断开，因此用电饭煲煮汤水较多的食物，发热管会长时间工作，容易造成过电流，这时限流电阻会先熔断，从而保护发热管。限流电阻是保护发热管的关键元件，不能用导线代替。

电压力锅电路维修手册(2013-2-13)

电压力锅电路板维修手册编者根据网上文章编辑整理，使文档结构更有条理。2013-2-13。文章版权分属拼凑的原作者，但目前已不详。本文主要适合入门级学徒阅读，经验丰富的老维修师傅可以飘过了。电压力锅是传统高压锅和电饭锅的升级换代产品，它结合了压力锅和电饭锅的优点，采用弹性压力控制，动态密封，外旋盖、位移可调控电开关等新技术、新结构，全密封烹调、压力连续可调，彻底解决了压力锅的安全问题，解除了普通压力锅困扰消费者多年的安全隐患；其热效率大于80%，省时省电（比普通电饭锅节电30%以上）。电压力锅的确是一个比较实用的烹调器具。它具有其它烹调器具无法比拟的优势，能满足多方面的烹饪需要，能快速、安全、自动实现多种烹调方式，其节能、营养的特性是现代人追求的方向。（本段来自百度词条） 1使用及保养说明电压力锅，顾名思义，有电有高压（这里指高气压而不是高电压），其实捎带还有高温。如果仅把它当成普通锅使用，那可能忽略了一些可能威胁到人身和财产安全的事项。对于能量过于集中的设备一定要小心使用，以防其能量快速释放做功过程中伤及无辜。 1.1电压力锅的正确操作方法 ①使用前仔细阅读产品说明书，了解电压力锅所具有的功能与注意事项。 ②使用前必须检查被使用电源的插座及线路是否满足电压力锅正常工作时所需要的条件。 ③电压力锅的按键为轻触开关，有的高档机型还采用了触摸屏控制技术，因此对控制面板上的按键操作应注意不要用力过大（或长按），以免损坏按键或缩短按键使用寿命。 ④不要在电压力锅工作时打开上盖，这样会影响电压力锅的温度感应系统，从而影响米饭烹饪效果。 ⑤不要用热水或低温冷水来煮饭，这样会影响温控制的感温判断，从而使煮饭效果变差。 ⑥请勿在电压力锅煮饭一次饭后立即再煮下一锅，应该接“保温/关”键，使电压力锅回到待机状态，等待15分钟以上，使热盘冷却后，再煮下一锅。 ⑦在电压力锅工作前，请检查内锅、密封圈、排气阀是否到位，用毛巾轻轻抹掉内锅底部的水分或异物，并检查合盖是否到位，以免引起事故。 1.2电压力锅的日常使用保养 ①将内锅从电压力锅内取出，用家用洗洁精洗衣干净前用清水冲洗，然后用干软布擦干。 ②切忌用金属擦或其它粗硬的洗具擦内锅，以免损伤内锅。 ③饭粒或其它杂物可能会附在电热盘上，用细砂纸将杂物磨掉，并用干软布擦

电饭煲常见故障及维修

电饭煲常见故障及维修 This manuscript was revised on November 28, 2020

电饭锅的磁钢是一个温度控制器，限定温度是103度+/-2度，稳控器的起跳温度是70度左右。下面我们来谈谈关于电饭锅的各元件功能的检查！这样能更快的找出问题的所在！这个方法就是，把锅放平稳后，在内锅中注入20~30毫升的水，通电，先不按下加热开关，这样因为里面的稳控器是通的，所以电饭锅能够加热，如果不能加热，看指示灯亮否，如亮，就是加热盘故障，需要换新的，如果指示灯不亮也不加热，可能是稳控器不通电，或者电源线问题！在加热时因为稳控器的温度是70度左右，所以在当水的温度上升到将近到水开始冒泡时，（这时的温度就是70度左右）稳控器应该断开，然后等水稳下降后再重新加热，如果一直加热或者不加热，就是稳控器有毛病！这一切都正常了，就可以把加热开关按下，这时，水的温度就会一直上升，到水的沸点，等水烧干后，锅的温度到达103度左右时，加热开关就应该跳起！加热停止，否则就是磁钢有故障！这个过程应该在1分钟左右！常见故障： 1）指示灯不亮，原因是电源线烧断、修理或换新的；稳控器触点接触不良，用砂纸砂干净后即可排除！指示灯本身故障，换新的：温度保险丝烧断。更换新的： 2）发热盘故障：不加热，换新的；能发热，但是发热盘变形的，也要换新的：

3）煮饭夹生：原因是有磁钢损坏，磁钢的起跳温度不到103度就起跳，造成煮饭的温度合时间都达不到正常值，造成夹生。磁钢调试不当，重新调整。加热开关触点接触不良，用砂纸砂干净。 4）煮饭糊；原因是温控器的触点烧结不能断开。这样一直加热，就会把饭烧糊；磁钢污渍，把他清理干净后再重新装好。磁钢的内部的弹簧弹力减弱，需要换新的！另外，稳控器的起跳温度过高时，也会造成烧糊饭。不过现在不少电饭锅上加有温度保险丝！（hou）

电压力锅电路板维修手册

电压力锅电路板维修手册电压力锅是传统高压锅和电饭锅的升级换代产品，它结合了压力锅和电饭锅的优点，采用弹性压力控制，动态密封，外旋盖、位移可调控电开关等新技术、新结构，全密封烹调、压力连续可调，彻底解决了压力锅的安全问题，解除了普通压力锅困扰消费者多年的安全隐患；其热效率大于80%，省时省电（比普通电饭锅节电30%以上）。电压力锅的确是一个比较实用的烹调器具。它具有其它烹调器具无法比拟的优势，能满足多方面的烹饪需要，能快速、安全、自动实现多种烹调方式，其节能、营养的特性是现代人追求的方向。（本段来自百度词条） 1使用及保养说明电压力锅，顾名思义，有电有高压（这里指高气压而不是高电压），其实捎带还有高温。如果仅把它当成普通锅使用，那可能忽略了一些可能威胁到人身和财产安全的事项。对于能量过于集中的设备一定要小心使用，以防其能量快速释放做功过程中伤及无辜。 1.1电压力锅的正确操作方法 ①使用前仔细阅读产品说明书，了解电压力锅所具有的功能与注意事项。 ②使用前必须检查被使用电源的插座及线路是否满足电压力锅正常工作时所需要的条件。 ③电压力锅的按键为轻触开关，有的高档机型还采用了触摸屏控制技术，因此对控制面板上的按键操作应注意不要用力过大（或长按），以免损坏按键或缩短按键使用寿命。 ④不要在电压力锅工作时打开上盖，这样会影响电压力锅的温度感应系统，从而影响米饭烹饪效果。 ⑤不要用热水或低温冷水来煮饭，这样会影响温控制的感温判断，从而使煮饭效果变差。 ⑥请勿在电压力锅煮饭一次饭后立即再煮下一锅，应该接“保温/关”键，使电压力锅回到待机状态，等待15分钟以上，使热盘冷却后，再煮下一锅。 ⑦在电压力锅工作前，请检查内锅、密封圈、排气阀是否到位，用毛巾轻轻抹掉内锅底部的水分或异物，并检查合盖是否到位，以免引起事故。 1.2电压力锅的日常使用保养 ①将内锅从电压力锅内取出，用家用洗洁精洗衣干净前用清水冲洗，然后用干软布擦干。 ②切忌用金属擦或其它粗硬的洗具擦内锅，以免损伤内锅。 ③饭粒或其它杂物可能会附在电热盘上，用细砂纸将杂物磨掉，并用干软布擦干净，以保持内锅和电热盘的充分接触。 ④需要定期对排气阀进行清洗。

电饭锅维修

家里的电饭煲使用的时间久了难免就会出现这样那样的问题，比如电饭煲不能煮饭、电饭煲只保温不煮饭或者只煮夹生饭等。下面就和大家一起来看看电饭煲的常见故障以及一些简单的维修方法。【电饭煲维修】电饭锅不能煮饭怎么办电饭煲常见问题和维修电饭煲常见问题和维修故障一：插上电源插头，电源保险丝马上熔断原因及检修： 1、电饭煲电源插座内进水或米汤，造成短路。这种情况可以将插座内吹干水分后继续使用; 2、电饭煲电源插座或插头由于长期使用，其表面碳化短路。

这种情况可用细砂纸将其表面碳化层磨掉，并用酒精擦干净。故障二：煮好饭后不能保温原因及检修：此故障可能是保温开关的常闭触点表面脏污或烧蚀，使其触点接触电阻过大，造成触点闭合而电路不通，发热管不发热，电饭煲不能保温。此时可用细砂纸将触点表面清理干净后，镀上一层锡。若仍不保温可更换保温开关。　故障三：煮煳饭　原因及检修：此故障可能是保温开关的常闭触点烧结粘在一起，虽然饭已经煮好，限温器也跳下，但保温开关仍在继续给发热管通电，饭就煳了。此时可用小刀把触点分开，然后用细砂纸将触点表面清理干净。故障四：煮夹生饭原因及检修：此故障一般是限温器内的永久磁环磁力减弱造成的。此时可拆开电饭煲的限温器检查磁环是否断裂、吸力如

何。若永久磁环断裂则必须更换相同型号的限温器;若吸力减小，可调节限温器上的调温螺钉，每次调节1/4圈，调节一次试煮饭一次。闪速到家以家电、家居生活为主营业务方向，提供小家电、热水器、空调、燃气灶、油烟机、冰箱、洗衣机、电视、开锁换锁、管道疏通、化粪池清理、家具维修、房屋维修、水电维修、家电拆装等保养维修服务。

电饭煲维修报告

武汉职业技术学院家电原理与维修技术项目教程课程报告报告课题：电饭煲班级：电信14302班学号：14013 姓名：教师：

完成时间：2016年11月17日一、实习目的 1、熟悉电饭煲基本机构和电气控制原理 2、能正确的拆装和组装普通电饭煲 3、掌握电饭煲的维修技巧二、实习工具、仪表及器材 1、维修工具一套 2、万用表一个 3、电饭煲 4、自动保温式电饭锅原理将盛好食物的内锅放到发热板上，使其底部与发热板中心的限温中感温软磁铁贴合。按下琴键开关，软磁铁下方的永久磁铁即上升至与软磁铁接触；此时锅尚未升温，软磁铁处于居里温度以下，呈良好铁磁性，能被永久磁铁磁化并将其吸持在高点位置。处于高点位置的软磁铁带动内部杠杆动作，将电路上、下触点接通，电热元件通电发热，锅内食物被加热升温。当内锅底温度达到103±2℃（此为软磁铁的居里温度）时，软磁铁立即感知而失去磁性，在重力及内部弹簧的共同作用下从高点位置落下，并由此带动杠杆机构，使电路上、下触点脱离，电路断开，电热元件不再发热，达到限温目的。但此时发热板仍处于高热状态，其热容量较大，

可对锅内食物继续加热一段时间，直至食物熟透。为了使食物维持在适宜温度，有的电饭锅还设有小功率加热线路,用一个双金属片恒温器控制其工作温度。当米饭温度低于70℃时,双金属片开关闭合,并联电路2再次被短路,保温指示灯熄灭,此时,电热盘再次被通电,加热指示灯再次发亮, 5、自动保温式电饭锅基本结构及电路图只要组成部件有外壳、内锅、电热板、磁性温控器、双金属温控器、指示灯、插座。 6.电饭煲使用时容易出现的故障：故障一：插上电源插头，电源保险丝马上熔断故障二：煮好饭后不能保温故障三：煮煳饭

电饭锅维修大全

电饭锅维修大全电饭锅主要是靠里面那块磁铁控制开关的，当饭里的水分没了时，也就是饭熟了时，温度超过105度，磁铁就会消磁，从而开关断开。电饭锅的分类和电饭锅的结构特点 (1)加热形式上分有： ①间接加热式电饭锅，其结构分为内锅、外锅和锅体三层。内锅是用来装食物的，外锅是用来安装电热元件、调温器和定时器的。这些电气部件都固定安装在外锅上成为一体，且密封起来。最外层是锅体，起着安全防护和装饰的双重作用。这种电饭锅的优点是：食物加热均匀，做出的饭上下软硬一致，内锅可取下，清洗方便；缺点是：结构较复杂，费时间，耗电多； ②直接加热式电饭锅：这种电饭锅的特点是：使用时电热元件直接对放食物的内锅加热。不像间接加热式电饭锅那样，电热元件把外锅中的水加热成蒸汽，蒸汽再对内锅中的食物进行加热。因此，其效率高，省时省电，缺点是做出的饭容易上下软硬不一致。 (2)从结构形式上分有： ①组合式电饭锅，锅体和电热座之间没有紧固连接，锅体放在电热座上，可以方便地取下，既便于清洗，又可以放到其他发热体上或餐桌上； ②整体式电饭锅，电热元件直接固定在锅体的底部，全锅形成一个整体。整体式电饭锅由于锅体的结构不同，又可分为单层电饭锅、双层电饭锅和三层电饭锅三种。 (3)按控制方式分有： ①保温式，煮饭时按下电源开关，饭熟后电源自动断开，当温度下降到65℃以下时，保温开关又接通电路，温度上升到65℃时，电源又自动断开，如此交替通断达到保温的目的。 ②定时启动保温式，锅内将米、水放好后，打开定时器开关，可在12h内任选开始煮饭时间。饭煮好后能自动保温，节省能源。 ③电脑控制式，采用电脑进行程序控制，使电饭锅的工作自动化程序更高。

电饭锅电路原理及维修经验

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