LG-LGHTW316-cdrec-sm 电路图 维修手册.pdf

《LG-LGHTW316-cdrec-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《LG-LGHTW316-cdrec-sm 电路图 维修手册.pdf（101页珍藏版）》请在收音机爱好者资料库上搜索。

1、DVD/CD RECEIVER SERVICE MANUAL MODEL:LGHTW316 FE-6100CVE, FE-6100TE, FE-6100WE FA-W6100SL, FA-W6100SR, ACC-W6100 P/N : 3829RAT091DSEPTEMBER, 2003 SERVICE MANUALMODEL: LH-DW6530 FE-6100CVE, FE-6100TE, FE-6100WE FA-W6100SL, FA-W6100SR, ACC-W6100 CD-R/RW RadioFans.CN 收音机爱 好者资料库 - 1-1 - SECTION 1. GENER

2、AL SERVICING PRECAUTIONS.1-2 ESD PRECAUTIONS.1-4 SPECIFICATIONS.1-5 LOCATION OF CUSTOMER CONTROLS.1-6 SECTION 2. AUDIO PART ELECTRICAL TROUBLESHOOTINGGUIDE. 2-1 BLOCK DIAGRAM.2-6 SCHEMATIC DIAGRAMS.2-8 WIRING DIAGRAM.2-20 VOLTAGE SHEET (IC&TR) . 2-22 PRINTED CIRCUIT DIARGAMS.2-26 SECTION 3. DVD PART

3、 ELECTRICAL TROUBLESHOOTING GUIDE .3-1 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING . 3-8 DVD PART SCHEMATIC DIAGRAMS.3-21 VOLTAGE SHEET (IC & TR).3-27 PRINTED CIRCUIT DIAGRAM.3-29 SECTION 4. EXPLODED VIEWS.4-1 SECTION 5. REPLACEMENT PARTS LIST.5-1 SECTION 6. SPEAKER PART.6-1 ELECTRICAL TROUBL

4、ESHOOTINGGUIDE.6-1 BLOCK DIAGRAM .6-7 SHEMATICDIAGRAMS .6-9 WIRING DIAGRAM.6-15 PRINTED CIRCUIT DIAGRAM . 6-17 SPEAKER EXPLODED VIEWS.6-21 REPLACEMENT PARTS LIST. 6-29 CONTENTS RadioFans.CN 收音机爱 好者资料库 SECTION 1. GENERAL PART SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for

5、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 mate

6、rials. 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 in

7、dividually 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 (

8、lens, etc.) of the pick-up if it is damaged. 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

9、be used, taking care not to distort this. 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 th

10、is alcohol on the swab, and do not allow the alcohol to get inside the pick-up. - 1-2 - Storage in conductive bagDrop impact NEVER look directly at the laser beam, and dont let contact fingers or other exposed skin. Magnet How to hold the pick-up Pressure Pressure Cotton swab Conductive Sheet RadioF

11、ans.CN 收音机爱 好者资料库 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, componen

12、ts 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 pre

13、sent, 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. Whe

14、n 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 (1M) 6

15、) 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. - 1-3 - Armband Conductive She

16、et Resistor (1 Mohm) Resistor (1 Mohm) 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 in

17、tegrated 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,

18、 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 electric

19、al 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.

20、 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

21、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 replacem

22、ent 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 devi

23、ces. (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). CAUTION. GRAPHIC SYMBOLS - 1-4 - THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERA

24、L TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMP

25、ORTANT SAFETY INFORMATION IN SERVICE LITERATURE. - 1-5 - SPECIFICATIONS ? ? - 1-6 - LOCATION OF CUSTOMER CONTROLS FRONT PANEL DISPLAY WINDOW - 1-7 - REAR PANEL - 2-1 - SECTION 2. AUDIO PART ELECTRICAL TROUBLESHOOTING GUIDE - 2-2 - 2. AUDIO . COM CIRCUIT POWER ON Does CD/DVD appear at FLT? Does LOADI

26、NG appear at FLD? Does it appear DVD Error at FLD? Does Video1/2, TV AUDIO, FM 87.5 appear at FLD? OK. Check Connector(PN903)if is normally. Reconnet it. Refer to SMPS Refer to oscillator Circuit. Check DVD Reset Waveform. Check IC101 Reset Wavefrom. Check 3.3V line. Check Power dection Circuit. Che

27、ck power part of Main B/D. Check oscillator of x101. Check if PN200 PINis High. Check if IC101 PINis High. Check if IC101 PIN , , , is high (5V). Check if IC101 PIN is High . Replace IC101. Does no Dise or Time appear at FLD? Check if DVD an Audio Micom Interface is OK. Check power. Check DVD Module

28、. Check SMPS. 174672 90 11 5 26 - 2-3 - 3. FRONT CIRCUIT (1/2) - 2-4 - 4. FRONT CIRCUIT (2/2) - 2-5 - MEMO 2-62-7 BLOCK DIAGRAM 2-82-9 SHEMATIC DIAGRAMS FRONT & POWER SCHEMATIC DIAGRAM 2-102-11 MICOM SCHEMATIC DIAGRAM 2-122-13 I/O SCHEMATIC DIAGRAMNOTE: Warning Parts that are shaded are critical Wit

29、h respect to risk of fire or electrical shock. NOTE: 1. Shaded(I) parts are critical for safety.Replace only with specified part number. 2. Voltages are DC-measured with a digital voltmefer during Play mode. 2-142-15 DAP SCHEMATIC DIAGRAM AMP SCHEMATIC DIAGRAM 2-162-17 SMPS SCHEMATIC DIAGRAM 2-182-1

30、9 NOTE: Warning Parts that are shaded are critical With respect to risk of fire or electrical shock. 2-202-21 WIRING DIAGRAM NOTE: Warning Parts that are shaded are critical With respect to risk of fire or electrical shock. 2-222-23 1.LH-D6530(MAIN) 1).IC101(LC876748C-52K, MICOM) PIN No.Volt(V)PIN N

31、o.Volt(V)PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V) 12.15V214.88V41-31.V6181 24.8V223.94V42-28.V6282 31.36V233.26V43-29.V6383 4243.26V44-25.V642.2V84 5250 45-32.V65853.3V 6262.75V464.85V66861.8V 7274.85V47-31.V67873.17V 8284.85V48-31.V68883.3V 92949-26.V69890 1030-31.V50-25.V703.26V904.88V 1131-31.V

32、51-32.V713.15V911.5V 1232-31.V52-26.V725.V92 1333-31.V53-26.V734.95V93 140 34-31.V54-26.V744.96V94 152.68V(9.8304MHz)35-31.V55-26.V75950 162.94V(9.8304MHz)36-31.V56-32.V76960 174.89V37-31.V57-32.V77970 184.86V38-31.V58-32.V78982.7V 1939-31.V59-25.V79992.6V 204.88V40-31.V600 801002.6V 2).IC201(AK5365

33、VQ, ADC & FUCTION IC) PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V) 1122.5V23LRCK340 20 132.5V24MCLK350 3ADATA4_L_IN142.5V253.3V36ADATA1_R_IN 40 152.5V263.3V370 5ADATA3_L_IN165.V270 38ADATA2_R_IN 60 170 280 390 7ADATA2_L_IN182.5V290 40ADATA3_R_IN 80 190 300 410 9ADATA1_L_IN203.3V313.3V42A

34、DATA4_R_IN 102.5V21ADATA_OUT323.3V430 112.5V22BCK333.9V44 3).IC202(AK4117VF-E2, DIR IC) PIN No.Volt(V)PIN No.Volt(V) 10 13ADATA_IN 23.3V14MCLK 315 416 5SPDIF_IN17 63.3V18 70 193.3V 82.2V(12.288MHz)203.3V 921 10LRCK22 11BCK233.3V 12ADATA_OUT240 4).IC203(74VHC244MTCX, BUFFER IC) PIN No.Volt(V)PIN No.V

35、olt(V) 10 11ADATA1 20 12ADATA2 3LRCK13ADATA0 414ADATA3 5BCK15BCK 6ADATA316 7ADATA017LRCK 8ADATA2180 9ADATA1190 100 203.2V 5).IC301(PS9818, DAP IC) PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V) 10 210 41PWM_OUT61PWM_OUT810 20 223.3V422.5V62PWM_OUT823.3V 32.35V23ADATA0430 630

36、833.3V 45.V24ADATA1440 640 840 52.35V25ADATA245PWM_OUT653.3V850 62.32V26ADATA346PWM_OUT662.5V862.27(12.288MHz) 70.89V27473.3V67PWM_OUT873.3V 80 280 48PWM_OUT68PWM_OUT88 90 293.3V49PWM_OUT690 89 103.3V30500 70PWM_OUT90 110 3151PWM_OUT71PWM_OUT912.5V 120 3252PWM_OUT723.3V920 132.5V33530 730 93 140 342

37、.5V54PWM_OUT74PWM_OUT943.3V 150 350 55PWM_OUT75PWM_OUT950 160 36PWM_OUT563.3V763.2V964.89V 170 37PWM_OUT570 770 97 180 380 58PWM_OUT781.5V98 19BCK393 59PWM_OUT791.8V99 20LRCK40PWM_OUT600 802.5V100 6).IC501(NJM4580M, OP AMP IC) PIN No.Volt(V)PIN No.Volt(V) 1Audio1_L_OUT5Audio1_R+_IN 2Audio1_L-_IN6Aud

38、io1_R-_IN 3Audio1_L+_IN7Audio1_R_OUT 4-11.8V8 7).IC502(NJM4580M, OP AMP IC) PIN No.Volt(V)PIN No.Volt(V) 1S/W_OUT5S/W_OUT 2S/W-_IN6S/W_OUT 3S/W+_IN7S/W_OUT 4-11.8V811.9V 8).IC503(NJM4580M, OP AMP IC) PIN No.Volt(V)PIN No.Volt(V) 1H/Phone_L_OUT5H/Phone_R+_IN 2H/Phone_L-_IN6H/Phone_R-_IN VOLTAGE SHEET

39、 (IC&TR) 2-242-25 3H/Phone_L+_IN7H/Phone_R_OUT 4-11.8V811.9V 9).IC601(NJM2296M, VIDEO SWITCHING IC) PIN No.Volt(V)PIN No.Volt(V) 1Video_OUT 9 25.V105.V 3Video2_IN11Video_OUT 4120 5Video1_IN13 6145.V 7COMPOSITE_IN15Video_OUT 8-12.V165.V 10).IC710(STA505, DIGITAL AMP IC) PIN No.Volt(V)PIN No.Volt(V)PI

40、N No.Volt(V)PIN No.Volt(V) 10 10REAR_L+_OUT190 283.28V 2FRONT_L+_OUT11REAR_L+_OUT200 29REAR_L-_IN 3FRONT_L+_OUT1231.5V214.89V30REAR_L+_IN 431.5V130 224.89V31FRONT_L-_IN 50 140 233.3V32FRONT_L+_IN 60 1531.5V240 3326.36V 731.5V16REAR_L-_OUT253.18V3426.36V 8FRONT_L-_OUT17REAR_L-_OUT263.16V3531.42V 9FRO

41、NT_L-_OUT18273.16V3631.42V 11).IC730(STA505, DIGITAL AMP IC) PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V) 10 10FRONT_R+_OUT190 283.28V 2REAR_R+_OUT11FRONT_R+_OUT200 29sFRONT_R-_IN 3REAR_R+_OUT1231.5V214.89V30FRONT_R+_IN 431.5V130 224.89V31REAR_R-_IN 50 140 233.3V32REAR_R+_IN 60 1531.5V240 3326.36V 731.5V16FRONT_R-_OUT253.18V3426.36V 8REAR_R-_OUT17FRONT_R-_OUT263.16V3531.42V 9REAR_R-_OUT18273.16V3631.42V 12).IC750(STA501, DIGITAL AMP IC) PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V)PIN No.Volt(V) 10 10190 283.28V 2