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Please refer to the Original Service Manual for: General Guidelines 3 1. Before Repair and Adjustment 4 1.
Protection Circuitry 4 1. Safety Part Information 4 2 Warning 5 2. Precaution of Laser Diode 6 2. Service caution based on Legal restrictions 7 2. Service Information 10 4 Specifications 11 5 Location of Controls and Components 12 5. Main Unit Key Button Operations 12 5. Remote Control Key Button Operations 13 5.
Media Information 14 6 Self-diagnostic and special mode setting 15 6. Entering into Self-diagnostic Mode 15 6. Self-diagnostic Function Error Code 15 6.
Unauthorized copying and distribution is a violation of law. Exploded View and Mechanical replacement Parts List Disassembly flow chart 23 9. Main Parts Location Diagram 24 9. Disassembly of Top Cabinet Assembly 25 9. Disassembly of Headphone P. Disassembly of iPod P. Disassembly of iPod Lid 27 9. Disassembly of Front Panel Assembly 32 9. Disassembly of USB P. Disassembly of Panel P. Disassembly of FL Window 35 9. Disassembly of Centre Ornament 36 9. Disassembly of CD Lid 36 9.
Disassembly of Power P. Disassembly of Main P. Disassembly of Fan Unit 44 9. Disassembly of Transformer P. Replacement of Transistor Q 46 9. Disassembly of CD Servo P. Disassembling Procedures 50 Assembling Procedure 51 11 Service Position 53 When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged dqtasheet the short circuit. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
After servicing, carry out the following leakage current checks to prevent the customer from being exposed to shock hazards. Datasueet Current Cold Check 1. Unplug the AC cord and connect a jumper between the two prongs on the plug. When the exposed metal does not have a return path to the chassis, the reading must be 1. Leakage Current Hot Check 1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
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Check each exposed metallic part, and measure the voltage at each point. Reverse the AC plug in the AC outlet and repeat each of the above measurements. The potential at any point should not exceed 0.
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.
Before Repair and Adjustment Caution: After repairs are completed, restore power gradually using a variac, to avoid overcurrent. Protection Circuitry The protection circuitry may have operated if either of the following conditions are noticed: The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are “shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
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If this occurs, follow the procedure outlines below: Turn off the power. Determine the cause of the problem and correct it. Turn on the power once again after one minute. When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
There are special components used in this equipment which are important for safety. Do not modify the original design without permission of manufacturer. Table 1 Safety Ref. The following techniques should be used datxsheet help reduce the incidence of component damage caused by electrostatic discharge ESD.
Immediately before handling any semiconductor component or semiconductor-equiped 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.
After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium foil, to prevent electrostatic charge build up or exposure of the assembly. Use only a grounded-tip soldering iron to solder or unsolder ES devices. Use only an anti-static solder remover device. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. Do not remove a replacement ES device from datazheet 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, aluminium foil or comparable conductive material. 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 c528 installed.
Be sure no power is applied to the datadheet or circuit, and observe all other safety precautions. 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 datqsheet damage an ES device. This product utilizes a laser diode with the unit turned “on”, invisible laser radiation is emitted from the pickup lens.
Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous. Do not adjust the variable c598 on the pickup ddatasheet. It was already adjusted. Do not look at the focus lens using optical instruments.
Recommend not to look at pickup lens for a long time.
Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit abgestrahlt. Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.
Nicht mit optischen Instrumenten in die Fokussierlinse blicken. Service caution based on Legal restrictions 2. General description about Lead Free Solder PbF The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering daatasheet globally environmental conservation.
The normal solder is the alloy of tin Sn and lead Pb. On the other hand, the lead free solder is the alloy mainly consists of tin Snsilver Ag and V5928 Cuand the melting point of the lead free solder is higher approx.
Tin Sn Handling Precaution for Traverse Unit The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit.
Cautions to Be Taken in Handling the Optical Pickup Unit The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body.
Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed should be short-circuited with a short pin or a clip.
The flexible cable may be cut off if an excessive force is applied to ddatasheet. Use caution when handling the flexible cable.
The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexible cable, cut off the antistatic FPC.