Lg cd 962ax инструкция по применению

LG CD-962AX service manual
(34 pages)

В случае если инструкция на русском не полная или нужна дополнительная информация по этому устройству, если вам нужны
дополнительные файлы: драйвера, дополнительное руководство пользователя (производители зачастую для каждого
продукта делают несколько различных документов технической помощи и руководств), свежая версия прошивки, то
вы можете задать вопрос администраторам или всем пользователям сайта, все постараются оперативно отреагировать
на ваш запрос и как можно быстрее помочь. Ваше устройство имеет характеристики:Тип: CD/кассетная, Звук: стерео, Дека: двухкассетная, Количество предустановок эквалайзера: 4, Отделяемые колонки: есть, Количество станций: 30, полные характеристики смотрите в следующей вкладке.

Для многих товаров, для работы с LG CD-962 могут понадобиться различные дополнительные файлы: драйвера, патчи, обновления, программы установки. Вы можете скачать онлайн эти файлы для конкретнй модели LG CD-962 или добавить свои для бесплатного скачивания другим посетителями.

Если вы не нашли файлов и документов для этой модели то можете посмотреть интсрукции для похожих товаров и моделей, так как они зачастую отличаются небольшим изменениями и взаимодополняемы.

Обязательно напишите несколько слов о преобретенном вами товаре, чтобы каждый мог ознакомиться с вашим отзывом или вопросом. Проявляйте активность что как можно бльше людей смогли узнать мнение настоящих людей которые уже пользовались LG CD-962.

В нашей базе сейчас зарегестрированно 18 353 сервиса в 513 города России, Беларусии, Казахстана и Украины.

SERVICING PRECAUTIONS

NOTES REGARDING HANDLING OF THE PICK-UP

1.Notes for transport and storage

1)The pick-up should always be left in its conductive bag until immediately prior to use.

2)The pick-up should never be subjected to external pressure or impact.

2.Repair notes

1)The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.

2)The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board.

3)Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched.

4)Laser beams may damage the eyes!

Absolutely never permit laser beams to enter the eyes!

Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.

NEVER look directly at the laser beam, and don¡˙t let contact fingers or other exposed skin.

5)Cleaning the lens surface

If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort this.

Pressure

Magnet

Pressure

How to hold the pick-up

Cotton swab

Conductive Sheet

6)Never attempt to disassemble the pick-up.

Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

NOTES REGARDING COMPACT DISC PLAYER REPAIRS

1.Preparations

1)Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care.

2)The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is excessive dust.

2.Notes for repair

1)Before replacing a component part, first disconnect the power supply lead wire from the unit

2)All equipment, measuring instruments and tools must be grounded.

3)The workbench should be covered with a conductive sheet and grounded.

When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.)

4)To prevent AC leakage, the metal part of the soldering iron should be grounded.

5)Workers should be grounded by an armband (1MΩ )

6)Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband.

7)The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.

Armband

5

ESD PRECAUTIONS

Electrostatically Sensitive Devices (ESD)

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD 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 static electricity.

1.Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, 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 ESD 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 ESD devices.

4.Use only an anti-static solder removal device. Some solder removal devices not classified as «anti-static» can generate electrical charges sufficient to damage ESD devices.

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

6.Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials).

7.Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed.

CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS.

8.Minimize bodily motions when handing unpackaged replacement ESD 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 sufficient to damage an ESD device).

2. AM IF Adjustment

Figure 2.

3. AM Coverage Adjustment

Figure 3.

4. AM Tracking Adjustment

Figure 4.

5. FM IF Adjustment

Figure 5.

6. FM Coverage Adjustment

7. FM Tracking Adjustment

10. LW IF Adjustment

11. LW Coverage Adjustment

12. LW Tracking Adjustment

TAPE DECK ADJUSTMENT

1. AZIMUTH ADJUSTMENT

2. MOTOR SPEED ADJUSTMENT

Figure 3. Motor Speed Adjustment Connection Diagram

3. RECORD BIAS ADJUSTMENT

Figure 4. Record Bias Adjustment Connection Diagram

CDP ADJUSTMENTS

When change the pick-up must be confirm as follow

1.TRACKING BALANCE CONFIRMATION

1.Connect the oscilloscope to TEO and REF.

2.Access from 1 st selection to last section of test disc (YEDS-18)

3.Confirm the normal state of tracking error signal (T.B deviation : less than ±3%)

A=B

2.RF WAVEFORM CONFIRMATION

1.Connect the oscilloscope to RF and REF.

2.Put a test disc (SONY YEDS-18) into unit and playback the 18th selection of the test disc.

3.Confirm the normal state of RF waveform.

4.Confirm the less than 30nS of Jitter Meter reading.

3T, 4T 5T,6T 11T

•Connection : 7. IC501 pin 48 .

8.IC501 pin 40 (FOK)

•Inspection : Check IC501 pin 4 to IC501 pin

48 (Pattern defective)

12

11

16