索尼彩电电路原理图1.
《SONY机器原理》课件
介绍
SONY机器简介
SONY机器是索尼公司研发的一款先进的机器人技术。它具有卓越的性能和广泛的应用领域。
SONY机器的应用领域
SONY机器广泛应用于工业自动化、医疗卫生、日常生活等领域，为人类社会带来巨大的变 革。
SONY机器的工作原理
SONY机器利用先进的机械结构和智能控制系统实现任务执行和智能交互，具有高度的自主 性和灵活性。
参考文献
SONY机器相关文献
列出一些关于SONY机器的 重要参考文献，供读者进一 步了解机器原理和应用。
机器学习、人工智能相 关文献
提供一些与机器学习、人工 智能有关的文献资料，深入 探讨机器技术的发展背景和 方法。
电子、机械工程相关文 献
介绍一些电子工程和机械工 程领域的文献，为读者进一 步学习机器原理提供支持。
应用案例分析
SONY机器应用案例介绍
分享一些SONY机器在实际应用中取得的成功案例，展示其在不同行业的广泛应用。
SONY机器在工业、医疗等领域的应用
具体介绍SONY机器在工业自动化、医疗卫生等领域的应用，揭示其巨大的潜在价值。
SONY机器的未来发展趋势
展望SONY机器在未来的发展趋势，包括技术创新、应用扩展和市场前景等方面。
机器软件设计
1 机器软件设计概述
SONY机器的软件设计包 括操作系统、控制算法和 用户界面设计，实现机器 的智能化和用户友好性。
2 机器软件设计参数
SONY机器的软件设计参 数包括速度控制、路径规 划、任务调度等，确保机 器的稳定和高效运行。
3 机器软件结构及框架
SONY机器的软件结构和 框架决定了其灵活性和可 扩展性，使其适应不同应 用场景和用户需求。
彩电电路原理
彩电电路原理彩电电路原理彩电常用色解码IC维修探讨在电视机的维修中，无彩色的故障也较为常见，要维修此类故障就必须要对各种彩色解码电路的信号流程有所了解，掌握一些检测的关键点。
下面我们选了几种教为常用的彩色解码IC的信号流程图和有关功能脚加以说明。
一，AN5601K 信号流程图：--》11脚（FV信号）R-Y解调--》25脚输出R信号色度信号--》5脚--》7脚出--》外接延时线（分两路）--》13脚（FU信号）--》经IC内部的B-Y解调--》24脚输出B信号G-Y解调--》21脚输出G信号亮度信号--》15脚--》到内部矩阵电路AN5601K是一个专用PAL制彩色解码IC，其中12脚为内部消色开关工作状态判别控制脚，当内部能产生正确的色同步信号时，此脚呈高电平（4V）否则为低电平（0V），在维修时我们可测此电压来加以分析，当图象无彩色时此电压为0V，产生此故障的原因：1，是色度信号输入不正常（最好用示波器看其波形）；2，是37脚引入的行输出脉冲异常，此脉冲一方面产生色同步信号另一方面用作矩阵电路的钳位脉冲。
可用示波器检测此点波形的幅度，正常时在12V P-P 左右；3，色副载波发生器所产生的4.43MHZ载波相位偏离过大，可检查2脚外接的4.43MHZ晶振和与之串接的微调电容.在实际维修中我们可在12V和12脚之间并入一只20K 左右的电阻来强制使内部的消色开关接通,此时屏幕上应能出现彩色条纹,调整与4.43MHZ晶振相串的微调电容看能否出现正常的彩色,如彩色正常但不能保持这是由于IC内部不能产生正确的色同步信号的原故,在确认行脉冲和输入的色度信号正常时,这多半是IC损坏造成的,在我们长期的维修实践中发现无彩色的故障多半是晶振变值或微调电容质量变差所引起的.亮度信号--》19脚--》4脚输出此IC34脚是内部消色开关工作状态判别控制脚,31脚是色副载波发生器外接的4.43MHZ晶振端,这种IC比较特别之处是28脚外接了一个谐振于4.43MHZ的谐振电路,调整它可校正图象彩色的色相.它与AN5601K不同之处就是其输出是色差信号,矩阵功能在显象管驱动电路内完成,其无彩色的维修方法参考AN5601K的维修方法.三,LA7680 （看图请按这里）LA7680是一片PAL与NTSC制的彩色解码IC（它还包括中放和扫描发生器），其信号流程如下图：--》18脚（FV信号）R-Y解调--》21脚输出R-Y 信号色度信号--》40脚--》14脚出--》外接延时线（分两路）--》20脚（FU信号）--》经IC内部的B-Y解调--》23脚输出B-Y信号G-Y解调--》22脚输出G-Y信号亮度信号--》38脚--》24脚输出此IC的15脚为制式识别控制脚，当工作在PAL制时15脚为7V左右，当工作在NTSC制时15脚为4V左右，如在此脚与地之间并上一只1K的电阻IC将被强制工作在NTSC制状态，33脚为同步分离输入端，26脚为行脉冲输入端，16脚为色副载波发生器外接的4.43MHZ(PAL制)或3.58MHZ(NTSC制)的晶振.此种IC如无彩色的故障应首先检查39脚和40脚的电压,因为此两脚的电压反映了IC内部的色度放大器是否在工作,当电压为0V表示内部的色度放大器在关闭状态(正常工作时此点电压为5V左右),影响此点电压的是色度信号幅值,当输入的信号强度不够时.IC将自动关闭其内部的色度放大器,第二是测15脚的电压看这点的电压是否对应当前的彩色制式.在我们的维修实践中这种IC由于外围电路出故障造成无彩色的例子较少,多半是IC本身损坏引起较多。
Hisense_TLM26V68(2)系列液晶(1800板)彩色电视机电路原理图
R170
75R
AV1_Lin AV1_Rin
R213 10K
C153 470pF
R223 10K
C166 470pF
XS3 AV2_IN
Close to CONN
1 3 2 4 6 5 7 9 8
AV2 AV2 VD209 ESD AV2-L C197 NC C198 NC/330pF L33 0R
+12V_all
+ CA2 220uF/25V
4
3
U1 AMS1117-ADJ PANEL-ON/OFF lab1 QC lab2 TX
PANEL-ON/OFF
R2 NC +5V_MST
VCC1.2V
1.25V
R1 0R C2 0.1uF C1 0.1uF
+ CA1 100uF/16V
+
U2
AMS1117-3.3
1 3 2 4 6 5 7 9 8
1 3 2 4 6 5 7 9 8
AV1
L24 0R VD201 ESD R114 75R C128 NC/470pF
R108 47R
V201 2N3906
AV1-Lin AV1-Rin VD202 ESD
R201 R233 VD203 ESD
1K 1K
2
AV_out
1
IN
OUT
2
+
+ CA27 C188 100uF/16V 0.1uF
CA25 C187 100uF/16V 0.1uF
+12V_ALL R119 10R TUNER_PWM L19 R89 2.7K 100uH VD401 1N4148 V401 2SC1815
SONY贴片机电源布局、线路图及注意事项
二.電源分布
2.1 交流輸入電路 2.2 PW箱 2.3 DV箱 2.4 電源綜合框圖
2.1交流輸入電路 2.1.1 輸入接線圖
2.1.2輸入電力
SONY貼片機的供電系統輸入電力﹕ 三相﹑200V ±10%﹑50/60Hz ﹑15A
G200 電源輸入端子
2.1.3噪聲濾波器NF
機臺總的輸入電壓為
2.2.4 POWER ON/OFF BOARD for G200
2.2.5 Power 總結 for G200
PS1 PS4 CP1-CP5 TB1端子
電磁接觸器
Adobe Acrobat Document
2.3DV箱
PS2
PS3
DVR-CE 板 DVR-AD 板
ALARM 界面版 P/B板
熱繼電器MR1得電﹐真空泵VACUUM PUMP供三相電運轉
接觸器MC1得電﹐供DRIVER UNIT﹔ DC SUPPLY UNIT單相得電﹔ TFT液晶﹑風扇﹑打印機﹑顯示器得電
CR1
TMR1 (5MIN) CR3繼電器得電吸合﹐但CR1常閉點吸
合斷開﹐時間繼電器無效﹐為斷電做准
CR1
CR4
備
3.2 關機過程
按下斷電按鈕PW-OFF﹐釋放繼電器CR1﹔CR1釋 放繼電器CR2。PC UNIT 斷電﹔CR2斷開接觸器 MC2﹐DRIVER UNIT三相交流電斷電﹔ CR1的閉 點通過CR3的開點接通延時繼電器TMR1。TMR1 的延時斷開觸點延時5分鐘后斷開MR1﹑MC1。直 流電源和所有的風扇﹑打印機﹐以及驅動單元的 單相交流電全部停電。真空泵也停止運轉。MC1 的開點釋放CR3。為下次通電做好准備。在CR2通 電狀態下﹐程序可以控制CR31的通斷﹐CR31控制 著CR4的通斷﹐從而控制MR1和MC1的通斷。
模块三彩色电视机电路工作原理及故障检修
【教学目的】掌握彩色电视机的原理框图以及信号处理的基 本流程。
3.1.1实训彩色电视机整机电路认识
[实训目的]初步认识彩色电视机整机电路。
[实训器材]彩色电视机。 [演示操作要点介绍彩色电视机电路板的构成。 [实训内容]了解彩色电视机各功能电路的大致分布情况。
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3.1 彩色电视机的整机框图
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3.1 彩色电视机的整机框图
1.五片机 将中放、视频检波、预视放、AGC , AFC等电路集成到在一 块芯片里;将色度处理电路、亮度处理电路、行场扫描电路、 伴音电路分别集成在另一块芯片里，这样完成小信号处理的 电路共使用5块芯片。 2.四片机 在五片机的基础上，将色度处理电路、亮度处理电路集成到 一块芯片，小信号处理电路共使用4块芯片。
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3.1 彩色电视机的整机框图
本课题以单片小信号集成电路LA76810及其相关电路为实 例，分析各单元电路的工作原理。LA76810是口本三洋公 司开发的小信号处理集成电路，集中频、视频、扫描小信号 处理电路于一身，适用于PAL/NTSC制信号处理，具有 SECAM制接口，内含多种清晰度改善电路，并采用I2C总线 控制，简化了控制电路，一经问世深受我国各大电视机厂家 的青睐，并迅速在长虹、康佳、海信、TCL等电视机上使用， LA76810的引脚功能如表3-1所示。
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3.1 彩色电视机的整机框图
4.一片机 超大规模集成电路的出现，取代了两片机，一片机是将上述 所有小信号处理电路集成在一块芯片。例如应用较多的是口 本三洋公司开发LA7680, LA7681,LA7688芯片，荷兰 飞利浦公司开发TDA8361 , TDA8362芯片，以及具有 I2C总线控制功能的芯片，如LA76810, TB1238AN等。
索尼随声听WM-FX493电路原理图
Ver 1.0 2000.01WM-FX491/FX491ST/FX493/FX493STRADIO CASSETTE PLAYERSPECIFICATIONSUS ModelWM-FX493/FX493STCanadian ModelWM-FX491/FX491ST/FX493STAEP Model E Model Chinese ModelWM-FX491/FX493Model Name Using Similar Mechanism WM-FX477Tape T ransport Mechanism TypeMT -WMEX404-147Photo : WM-FX493SERVICE MANUAL• Frequency range FM:87.5–108 MHzAM:530–1710 kHz (US, Canadian, 5E, 6E model)531–1602 kHz (EXCEPT US, Canadian, 5E, 6E model)• Power requirements3 V DC batteries R6 (size AA) x 2• Dimensions (w/h/d)Approx. 115.8 x 83.2 x 30.1 mm, incl. projecting parts and controls • MassApprox. 115 g/Approx. 195 g (incl. a battery and a cassette)• Supplied accessoriesStereo headphones or earphones with remote control (1)(FX493/FX493ST)/Stereo headphones or earphones (1)(FX491/FX491ST)Design and specifications are subject to change without notice.•Abbreviation5E, 6E :South AmericaBattery life (approximate hours) (EIAJ*)Sony alkaline LR6 (SG)Sony R6P (SR)Tape playback 257.5Radio reception 4014*Measured value by the standard of EIAJ (ElectronicIndustries Association of Japan). (Using a Sony HF series cassette tape)Note•The battery life may shorten depending on the operation of the unit.TABLE OF CONTENTS Specifications (1)1.GENERALLocation and Function of Controls (3)2.DISASSEMBL Y2-1. Cabinet (Front) Sub ASSY (5)2-2. Main Board (5)2-3. Mechanism Deck (6)2-4. Belt, Motor (Capstan/Reel) (M901) (6)2-5. “Holder Sub ASSY, Cassette” (7)3.ADJUSTMENTS3-1. Mechanical Adjustments (8)3-2. Electrical Adjustments (8)4.DIAGRAMS4-1. Explanation of IC Terminals (11)4-2. Block Diagram (13)4-3. Printed Wiring Boards (15)4-4. Schematic Diagram (19)5.EXPLODED VIEWS5-1. Cabinet Section (23)5-2. Mechanism Deck Section (MT-WMEX404-147) (24)6.ELECTRICAL PARTS LIST (25)Flexible Circuit Board Repairing•Keep the temperature of the soldering iron around 270°C during repairing.•Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).•Be careful not to apply force on the conductor when soldering or unsoldering.Notes on chip component replacement•Never reuse a disconnected chip component.•Notice that the minus side of a tantalum capacitor may be dam-aged by heat.– 2 –– 3 –SECTION 1GENERALLOCATION AND FUNCTION OF CONTROLSThis section is extracted from instruction manual.ABCFX493FX491– 4 –Listening to the Radio B1If the HOLD function is turned on, slide the HOLD switch in the opposite direction of the arrow to unlock the controls.2Press RADIO ON/BAND to turn on the radio.3Press RADIO ON/BAND repeatedly to select AM, FM1, FM2 or FM3.4Press TUNING +/– to tune in to the desired station.If you keep pressing TUNING+/– for a few seconds, the Walkman will start tuning to the stations automatically.To turn off the radioPress x •RADIO OFF.To improve the broadcast reception C• For FM: Extend the headphones/earphones cord (antenna) (FX491) or remote control cord (antenna)(FX493). If the reception is still not good, pressMENU repeatedly to set the cursor to FM MODE in the display.• For AM: Reorient the unit itself.Presetting Radio StationsYou can store radio stations into the unit’s memory.You can preset up to 32 radio stations, 8 for each FM1, FM2, FM3 or AM bands.1Press RADIO ON/BAND to turn on the radio.2Press RADIO ON/BAND repeatedly to select AM, FM1, FM2 or FM3.3Press ENTER.The frequency digits and a preset number flash in the display.4While the frequency digits and the preset number are flashing, tune in to a station you wish to store using TUNING+/–, and select a preset number using PRESET+/–.5While the frequency digits and the preset number are flashing, press ENTER.Notes•If you cannot complete step 4 or 5 while the indications are flashing, repeat from step 3.•If a station is already stored, the new station replaces the old one.To cancel the stored stationFollow the procedure above and in step 3, instead of tuning in to a station, press and hold TUNING +/– until “- - - -” is displayed. Press ENTER while “- - - -” is flashing.To play the preset radio stations1Press RADIO ON/BAND to select the band.2Press PRESET+/–.To operate from the remote control (FX493 only)To turn on the radio, press RADIO ON/BAND•OFF for more than one second (only while the tape is in stop mode).To select the band, press RADIO ON/BAND•OFF for more than one second while the radio is on.To tune in or recall a preset station, press PRESET +or –.To turn off the radio, press RADIO ON/BAND•OFF.Using Other FunctionsTo lock the controlsSet the HOLD switch to the direction of the arrow to lock the controls.PreparationsTo Insert Batteries A1Slide and open the battery compartment lid,and insert two R6 (size AA) dry batteries with correct polarity.Replace the batteries with new ones when " e "flashes in the display.Playing a Tape B1If the HOLD function is turned on, slide the HOLD switch in the opposite direction of the arrow to unlock the controls.2Insert a cassette and press MENUrepeatedly to set the cursor to TAPE in the display. Then press SET to select the tape type.No message: normal (TYPE I)METAL: CrO 2 (TYPE II) or metal (TYPE IV)3Press Y on the main unit, or if using the remote control (FX493 only), press Y (play)•x (stop).Adjust the volume with VOL.When adjusting the volume on the Walkman (FX493only)Set the VOL control on the remote control at maximum.When adjusting the volume on the remote control (FX493 only)Set the VOL control on the Walkman slightly above the appropriate level.Note on the cassette holderWhen opening the cassette holder, press the x (stop)button and make sure the tape is stopped by checking through the cassette window, then slide the OPEN switch.If the cassette holder is opened before the tape is stopped, the tape may loosen and be damaged.Operation on the main unitT oSwitch playback to the other side Stop playbackOperation on the remote control (FX493only)T oSwitch playback to the other side Stop playbackOther tape operationsT oFast forward*Rewind*Play the same side from the beginning (Auto Play function)Play the other side from the beginning (Skip Reverse function)*For FX493 only: If Y •x on the remote control is pressed during fast forward or rewind, the Walkman switches to playback.To select playback modePress MENU repeatedly to set the cursor to MODE in the display.Then press SET to select the desired mode.To playBoth sides repeatedly Both sides once from the side facing the cassette holderPressY •x for 2 seconds or more during playback Y •x once during playbackPressY (play)during playback xSelect s dPress FF during stop REW during stopREW during playback FF during playback To emphasize bass soundPress MENU repeatedly to set the cursor to MB in the display. Then, press SET to turn MB on. With each press, the indications change as follows.MB (MEGA BASS) : emphasizes bass sound No message: off (normal)Notes•If the sound is distorted with the mode “MB”, turn down the volume of the main unit or select normal mode.•Bass emphasis may not show great effect if the volume is turned up too high.To protect your hearing—AVLS(Automatic Volume Limiter System)functionWhen you set the AVLS function to active, themaximum volume is kept down to protect your ears.Note•The AVLS setting will be canceled when you replace the batteries.– 5 –SECTION 2DISASSEMBLYNote : Follow the disassembly procedure in the numerical order given.2-1. CABINET (FRONT) SUB ASSY2-2. MAIN BOARDz The equipment can be removed using the following procedure.Main boardHolder sub ASSY, CassetteBelt, Motor (Capstan/reel) (M901)Set5Main boardRemove solder– 6 –2-3. MECHANISM DECK2-4. BELT, MOTOR (CAPSTAN/REEL) (M901)11 belt3 Motor (Capstan/reel) (M901)wheel assy (SP), capstanbelt• How to apply the beltM9012 Screws (M1.4)3 Move hinge away 51Insert the spring (Lid up) to the slot as shown in the figure.23 Insert the hinge of the “Holder sub ASSY , Cassette”.4Close the “Holder sub ASSY , Cassette” then press it.2-5. “HOLDER SUB ASSY, CASSETTE”z CAUTIONS DURING ASSEMBL Y– 8 –3-1. MECHANICAL ADJUSTMENTSPRECAUTION1.Clean the following parts with a denatured-alcohol-moistened swab :playback head pinch roller capstan rubber belt2.Demagnetize the playback head with a head demagnetizer.Do not use a magnetized screwdriver for the adjustments.3.These measurement and adjustment should be performed with the rated power supply voltage (2.5 V) unless otherwise noted.Torque MeasurementMode Torque meterMeter reading FWD 20 – 42 g • cm CQ-102C (0.28 – 0.58 oz• inch)FWDless than 2 g • cm back tension (less than 0.027 oz• inch)REV 20 – 42 g • cm CQ-102RC (0.28 – 0.58 oz• inch)REVless than 2 g • cm back tension (less than 0.027 oz• inch)FF, REWCQ-201Bmore than 60 g • cm (more than 0.84 oz• inch)SECTION 3ADJUSTMENTS3-2. ELECTRICAL ADJUSTMENTSPRECAUTION•Supplied voltage : 2.5V .•Switch and control position MEGA BASS : OFFVOLUME control : maximum A VLS : NORMTAPE SECTIONTest TapeT ype Signal Used for WS-48A3kHz, 0dBTape Speed AdjustmentTape Speed Adjustment Procedure :1.Playback WS-48A (tape center part) in the FWD state and ad-just RV601 so that the frequency counter reading becomes 3,000Hz.Standard value : 2,985–3,015Hz2.Playback WS-48A (tape center part) in the REV state.Check that frequency counter reading is within ±1.0% of the reading of step 1.Adjustment Location :0 dB = 0.775Vtest tape WS-48A frequency counter RV601– 9 –– 10 –Adjustment Location :Frequency Coverage Adjustment Setting :digital voltmeter (DC range)L4 : AM Frequency Coverage AdjustmentL3 : FM Frequency Coverage Adjustment4-2. BLOCK DIAGRAM•Signal path. F: FM f: AM E: PB •AbbreviationCND:CanadianEA:Saudi ArabiaCH: Chinese9E:Indication of country of origin 5E, 6E:South AmericaSECTION 4 DIAGRAMS4-1. EXPLANATION OF IC TERMINALSIC701 TC9327AF-621 (SYSTEM CONTROL/LCD DRIVE)Pin No.Pin Name I/O Pin Description1– 4COM1 – 4O LCD driver common output.5 – 22S1 – 18O LCD driver output.23MOTOR DIR O Motor rotation direction control output (FWD: L, REV: H).24MOTOR CTL O Motor ON/OFF control output (OFF: L, ON: H).25MOTOR SPEED O Motor speed control output (Normally: L, Speed down: H).26MOTOR BRK O Motor brake control output (Brake OFF: L, Brake ON: H).27PHOTO CTL O Photo reflector rotation detection control output.28DOLBY—Not used (OPEN).29NC—Not used (OPEN).30A VLS O A VLS control output (A VLS OFF: L, A VLS IN: H).31FM MODE O LOCAL/DX control output (DX: L, LOCAL: H) (US, CND, 5E, 6E only).32TAPE SELECT O Tape select control output (Normal: L, CrO2/METAL: H).33PHOTO IN I Photo reflector rotation detection input.34 – 37K0 – 3I Key input 0 – 3.38NC—Not used (OPEN).39 – 41KO1 – 3I Key input 1 – 3.42BATT DET I Power supply voltage detection input (A/D input).43HOLD I HOLD input.44RM KEY IN I Remote control key input.45AD REF I Reference voltage of pin 43 and 44.46CS O Chip select output for EEPROM.47DATA O Data output for EEPROM.48SCLK O SCLK output for EEPROM.49BEEP O BEEP output.50TEST I Test mode select terminal (Connect to remote contorol).51MEGA BASS O MEGA BASS control output (ON: L, OFF: H).52MUTE O Mute signal output (OFF: L, ON: H)53AMP CTL O Power AMP ON/OFF control output.54OPEN I OPEN switch input.55REV SW I Mechanism deck mode detection switch input (REV ON: H).56REW SW I Mechanism deck mode detection switch input (REW ON: H).57FF SW I Mechanism deck mode detection switch input (FF ON: H).58FWD SW I Mechanism deck mode detection switch input (FWD ON: H).59BAND O BAND select output (AM: L, FM: input).60RADIO ON O RADIO ON/OFF control output (OFF: L, ON: H).61IF REQ O IF request output (Auto scan: L, Normally: H).62NC—Not used (OPEN).63TEST/NC—Not used (OPEN).64IF IN I IF input.65PRE AMP CTL O Preamp mute signal output.66D02O VT control signal output.67HOLD—Fixed at “H” in this set.68NC—Not used (OPEN).69GND—Ground.70VCO FM I VCO (FM) input.Pin No.Pin Name I/O Pin Description71VCO AM I VCO (AM) input.72VDD—Power supply pin.73RESET I Reset input. Connect to VDD.74XOUT O Crystal oscillator output (75 kHz).75XIN I Crystal oscillator input (75 kHz).76VXT—Stabilized capacitor connection of crystal oscillation power supply.77VLCD—LCD driver power rising pressure pin.78, 79C1, 2—LCD driver power rising pressure pin.80VEE— 1.5 V constant voltage power supply for LCD driver.WM-FX491/FX491ST/FX493/FX493STWM-FX491/FX491ST/FX493/FX493STNote:•X : parts extracted from the component side.•a : Through hole.•b : Pattern from the side which enables seeing.(The other layers' patterns are not indicated.) Caution:Pattern face side:Parts on the pattern face side seen from the (Side B)pattern face are indicated.Parts face side:Parts on the parts face side seen from the (Side A)parts face are indicated.•AbbreviationCND :Canadian FR :French EA :Saudi Arabia CH : Chinese E :Indication of country of origin 9E :No Indication of country of origin 5E, 6E:South AmericaCEV :Ukraine, Hungary, Czech4-3. PRINTED WIRING BOARDSD1C-18D2C-4D3C-4D301B-19D401E-14D402E-14IC1D-3IC101D-9IC701C-14IC702B-17IC703C-15Q2C-3Q51B-13Q52B-13Q53B-13Q303E-4Q304B-12Q305B-13Q401D-14Q603B-4Q604C-11Q605C-11Q606C-12Q607C-11Q701E-14Q702E-7Q703B-15Q751B-14Q752B-14Ref. No.Location z SemiconductorLocation4-4. SCHEMATIC DIAGRAMNote:•All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.•All resistors are in Ω and 1/4 W or less unless otherwise specified.•f : internal component.•U : B+ Line.•H : adjustment for repair.•Power voltage is dc 3V and fed with regulated dc power supply from battery terminal.•Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.no mark : FM (RADIO SECTION)PLAY (TAPE SECTION)(): AM•Voltages are taken with a VOM (Input impedance 10 M Ω).Voltage variations may be noted due to normal produc-tion tolerances.•Waveforms are taken with a oscilloscope.Voltage variations may be noted due to normal produc-tion tolerances.•Circled numbers refer to waveforms.•Signal path.F : FM f : AM E : PB •AbbreviationCND :Canadian FR :French EA :Saudi Arabia CH : Chinese E :Indication of country of origin 9E :No Indication of country of origin 5E, 6E:South AmericaCEV :Ukraine, Hungary, Czechz Waveformsz Refer to page 22 for IC Block Diagram.WM-FX491/FX491ST/FX493/FX493STz IC Block Diagram.IC1 TA2104AFN (EL)F M R F O U TR F V C CA M R F I NF M O S CA M O S CO S C O U TS T -L E DI F R E QD E T O U TM P X -I NL P F 1/M O -S TL P F 2/B A N DR F G N DF M R F I NA M L O W C U TM I X O U TV C CA M I F I NF M I F I NG N DA G CQ U A DR -O U TL -O U TSECTION 5EXPLODED VIEWSNOTE :•-XX, -X mean standardized parts, so they may have some difference from the original one.•Items marked “ * ”are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.•The mechanical parts with no reference number in the exploded views are not supplied.•Hardware (# mark) list and accessories and packing materials are given in the last of this parts list.•Abbreviation CND :Canadian FR :French EA :Saudi Arabia CH : Chinese E :Indication of country of origin 9E :No Indication of country of origin 5E, 6E :South America5-2. MECHANISM DECK SECTION (MT -WMEX404-147)5352525471565571575859607061626869M90163646666676769686551HP901Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark13-039-652-01LID,BATTERY CASE (FX491,FX491ST)13-039-652-11LID,BATTERY CASE (FX493,FX493ST)23-039-658-01RUBBER (B), BUTTON3X-3378-293-1CABINET (FRONT) SUB ASSY(FX491,FX491ST)3X-3378-294-1CABINET (FRONT) SUB ASSY(FX493,FX493ST)43-039-657-01RUBBER (A), BUTTON 53-704-197-11LOCK,SERRAT IB *63-039-660-01HOLDER (LCD)73-040-176-01RUBBER, CONDUCTIVE 83-022-857-01SPRING (OPEN)93-022-856-01SPRING (KNOB), TENSION 103-704-197-91SCREW (M1.4X1.8), LOCKING 113-019-421-01LEVER, OPEN 123-019-422-01JOINT 133-349-825-31SCREW143-318-382-61SCREW (1.7X2.5), TAPPING 153-039-661-01LOCKER (OPEN)163-025-276-01SPRING (LID UP)17X-3378-289-1HOLDER SUB ASSY, CASSETTE(FX491:CND,5E,6E,FX491ST)17X-3378-290-1HOLDER SUB ASSY, CASSETTE(FX491:AEP,CEV,FR,E,9E,CH)17X-3378-291-1HOLDER SUB ASSY, CASSETTE(FX493:US,5E,6E,FX493ST)17X-3378-292-1HOLDER SUB ASSY, CASSETTE(FX493:AEP ,CEV,FR,9E,EA,CH)183-019-514-21KNOB(OPEN)193-039-651-01CENTER CABINET (US,CND,5E,6E)193-039-651-11CENTER CABINET (E,EA,CH)193-039-651-21CENTER CABINET (AEP ,CEV,FR)193-039-651-31CENTER CABINET (9E)203-318-203-51SCREW (B1.7X12), TAPPING 213-040-144-01SPRING (CASSETTE)233-020-511-01TERMINAL (+), BATTERY24A-3021-309-A MAIN BOARD, COMPLETE (US,CND)24A-3021-310-A MAIN BOARD, COMPLETE (AEP ,CEV)24A-3021-311-A MAIN BOARD, COMPLETE (E,9E,EA,CH)24A-3021-312-A MAIN BOARD, COMPLETE (5E,6E)24A-3021-313-AMAIN BOARD, COMPLETE (FR)253-020-512-01TERMINAL (-), BATTERYL21-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING)ND7011-803-764-11DISPLAY PANEL, LIQUID CRYSTALRef. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark51X-3375-020-1PINCH LEVER (N-F) ASSY 52X-3372-619-1WHEEL ASSY (SP), CAPSTAN 533-354-868-01BELT543-021-950-01GEAR (DF)553-021-982-01SPRING (MODE), COMPRESSION 56X-3375-024-1CLUTCH ASSY (F)573-021-951-01GEAR (CAM)583-348-953-21WASHER593-021-979-01SPRING (UDF), COMPRESSION 603-021-949-01GEAR (BF)61X-3375-022-1CHASSIS ASSY (F)623-021-974-03SPRING (HEAD BASE)633-703-816-31SCREW (M1.4), SPECIAL HEAD 64X-3375-021-1PINCH LEVER (R-F) ASSY653-703-816-73SCREW (M1.4), SPECIAL HEAD 663-921-797-01WASHER 673-921-003-01BEARING683-022-100-01SPRING (B.T.), COMPRESSION 693-024-223-01GEAR (REEL-2)70X-3375-268-1GEAR (AF-SV) ASSY713-034-685-01WASHER (1.03-3.0)HP9011-500-555-11HEAD, MAGNETIC (PLAYBACK)M9011-763-073-11MOTOR, DC (CAPSTAN/REEL)(INCLUDING PULLEY)NOTE :•Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set.•-XX, -X mean standardized parts, so they may have some difference from the original one.•RESISTORSAll resistors are in ohms METAL : Metal-film resistorMETAL OXIDE :Metal oxide-film resistor F : nonflammable•Items marked “ * ”are not stocked since they are seldom required for routine service.Some delay should be anticipated when ordering these items.•SEMICONDUCTORSIn each case, u : µ, for example :uA.... : µA.... , uPA.... : µPA....uPB.... : µPB.... , uPC.... : µPC....uPD.... : µPD....•CAPACITORS uF : µF •COILS uH : µHWhen indicating parts by reference num-ber, please include the board.SECTION 6ELECTRICAL PARTS LISTRef. No.Part No.DescriptionRemark Ref. No.Part No.DescriptionRemark •Abbreviation CND :Canadian FR :French EA :Saudi Arabia CH : Chinese E :Indication of country of origin 9E :No Indication of country of origin 5E, 6E :South AmericaCEV :Ukraine, Hungary, CzechA-3021-309-A MAIN BOARD, COMPLETE (US,CND)A-3021-310-A MAIN BOARD, COMPLETE (AEP ,CEV)A-3021-311-A MAIN BOARD, COMPLETE (E,EA,9E,CH)A-3021-312-A MAIN BOARD, COMPLETE (5E,6E)A-3021-313-AMAIN BOARD, COMPLETE (FR)*********************3-020-511-01TERMINAL (+), BATTERY 3-020-512-01TERMINAL (-), BATTERY *3-039-660-01HOLDER (LCD)3-040-176-01RUBBER, CONDUCTIVE < CAPACITOR >C11-115-416-11CERAMIC CHIP 1000PF 5%25V C21-162-959-11CERAMIC CHIP 330PF 5%50V C31-162-995-11CERAMIC CHIP 0.022uF 50VC41-162-907-11CERAMIC CHIP 2PF 0.25PF 50VC51-162-995-11CERAMIC CHIP 0.022uF 50VC61-164-156-11CERAMIC CHIP 0.1uF 25V C71-162-919-11CERAMIC CHIP 22PF 5%50V C81-162-959-11CERAMIC CHIP 330PF 5%50V C91-163-033-91CERAMIC CHIP 0.022uF 50V C101-115-416-11CERAMIC CHIP 1000PF 5%25V C111-115-416-11CERAMIC CHIP 1000PF 5%25V C121-162-915-11CERAMIC CHIP 10PF 0.5PF 50V C131-162-970-11CERAMIC CHIP 0.01uF 10%25V C141-162-909-11CERAMIC CHIP 4PF 0.25PF 50V C151-162-970-11CERAMIC CHIP 0.01uF 10%25V C161-115-416-11CERAMIC CHIP 1000PF 5%25V C171-115-156-11CERAMIC CHIP 1uF 10V C181-107-826-91CERAMIC CHIP 0.1uF 10%16V C191-109-982-11CERAMIC CHIP 1uF 10%10V C201-164-156-11CERAMIC CHIP0.1uF25VC211-162-970-11CERAMIC CHIP 0.01uF 10%25V(EXCEPT US,CND,5E,6E)C211-164-245-11CERAMIC CHIP 0.015uF 10%25V(US,CND,5E,6E)C221-162-970-11CERAMIC CHIP 0.01uF 10%25V(EXCEPT US,CND,5E,6E)C221-164-245-11CERAMIC CHIP 0.015uF 10%25V(US,CND,5E,6E)C231-125-837-91CERAMIC CHIP 1uF 10% 6.3V C241-125-837-91CERAMIC CHIP 1uF 10% 6.3V C251-109-935-11TANTAL. CHIP 4.7uF 20%4V C261-162-974-11CERAMIC CHIP0.01uF50VC281-162-974-11CERAMIC CHIP 0.01uF 50V C291-115-467-11CERAMIC CHIP 0.22uF 10%10VC301-163-275-11CERAMIC CHIP 0.001uF 5%50V C311-113-988-11TANTAL. CHIP 68uF 20%4V C321-164-315-11CERAMIC CHIP 470PF 5%50V C331-115-416-11CERAMIC CHIP1000PF 5%25V (US,CND,5E,6E)C341-164-315-11CERAMIC CHIP 470PF 5%50V C351-162-970-11CERAMIC CHIP 0.01uF 10%25V C361-162-970-11CERAMIC CHIP 0.01uF 10%25V C371-162-970-11CERAMIC CHIP 0.01uF 10%25V C401-162-921-11CERAMIC CHIP 33PF 5%50V C411-115-416-11CERAMIC CHIP 1000PF 5%25V C511-162-964-11CERAMIC CHIP 0.001uF 10%50V C521-104-847-11TANTAL. CHIP 22uF 20%4V C531-162-970-11CERAMIC CHIP 0.01uF 10%25V C1071-115-156-11CERAMIC CHIP 1uF 10V C2051-115-156-11CERAMIC CHIP 1uF 10V C2071-115-156-11CERAMIC CHIP 1uF 10V C3051-124-433-00ELECT100uF 20%4V C3111-107-826-91CERAMIC CHIP 0.1uF 10%16V C3121-107-826-91CERAMIC CHIP 0.1uF 10%16V C3131-115-416-11CERAMIC CHIP 1000PF 5%25V C4011-115-416-11CERAMIC CHIP 1000PF 5%25V C4021-164-505-11CERAMIC CHIP 2.2uF 16V C4031-162-915-11CERAMIC CHIP 10PF 0.5PF 50V C4041-162-915-11CERAMIC CHIP 10PF 0.5PF 50VC4051-104-847-11TANTAL. CHIP 22uF 20% 4VC4061-162-974-11CERAMIC CHIP 0.01uF 50V C4071-162-974-11CERAMIC CHIP 0.01uF 50V C6081-107-826-91CERAMIC CHIP 0.1uF 10%16V C6101-124-434-00ELECT220uF 20%4V C7011-162-974-11CERAMIC CHIP 0.01uF 50V C7021-104-847-11TANTAL. CHIP 22uF 20%4V C7041-162-964-11CERAMIC CHIP 0.001uF 10%50V C7051-115-467-11CERAMIC CHIP 0.22uF 10%10V C7061-162-927-11CERAMIC CHIP 100PF 5%50V C7071-162-927-11CERAMIC CHIP 100PF 5%50V C7081-115-416-11CERAMIC CHIP 1000PF 5%25V C7091-162-927-11CERAMIC CHIP 100PF 5%50V C7101-162-974-11CERAMIC CHIP 0.01uF 50V C7121-162-917-11CERAMIC CHIP 15PF 5%50V C7131-162-917-11CERAMIC CHIP15PF5%50VMAINC7141-115-156-11CERAMIC CHIP1uF10VC7151-164-156-11CERAMIC CHIP0.1uF25VC7161-164-156-11CERAMIC CHIP0.1uF25VC7171-164-156-11CERAMIC CHIP0.1uF25VC7181-115-416-11CERAMIC CHIP1000PF5%25VC7191-115-416-11CERAMIC CHIP1000PF5%25VC7201-115-416-11CERAMIC CHIP1000PF5%25VC7211-115-416-11CERAMIC CHIP1000PF5%25VC7221-115-416-11CERAMIC CHIP1000PF5%25VC7231-115-416-11CERAMIC CHIP1000PF5%25VC7241-115-416-11CERAMIC CHIP1000PF5%25VC7251-115-416-11CERAMIC CHIP1000PF5%25V< FILTER >CF11-781-271-11FILTER, CERAMICCF21-781-152-11FILTER, CERAMIC< CONNECTOR >CN3031-750-346-21CONNECTOR, FFC/EPC (ZIF) 6P< TRIMMER >CT11-141-463-11CAP, ADJ 10PF (AM TRACKING)< DIODE >D18-719-053-30DIODE MA2S357-(TX). SOD28-719-072-58DIODE SVC347-TLD38-719-053-30DIODE MA2S357-(TX). SOD3018-719-017-58DIODE MA8068D4018-719-073-01DIODE MA111-(K8).S0D4028-719-056-89DIODE UDZ-TE-17-12B< FERRITE BEAD >FB21-500-113-22FERRITEFB1011-500-113-22FERRITEFB2011-500-113-22FERRITEFB3011-500-113-22FERRITEFB3111-500-113-22FERRITEFB3121-500-113-22FERRITEFB3131-500-113-22FERRITE< FILTER >FL11-236-711-21FILTER, BAND PASS< IC >IC18-759-564-18IC TA2104AFN(EL)IC1011-418-581-11EG UNIT (WFX)IC7018-759-653-11IC TC9327AF-621IC7028-759-457-70IC XC62RP1602MRIC7038-759-457-68IC AK93C45AV-L< JACK >J3011-785-164-11JACK (i)J3031-750-061-11JACK,DC(POLARITY UNIFIED TYPE)(DC IN 3V) (E,EA,9E,CH)< JUMPER RESISTOR >JC1011-216-296-00METAL CHIP05%1/8W JC1021-216-296-00METAL CHIP05%1/8W JC1031-216-864-11METAL CHIP05%1/16W JC1061-216-296-00METAL CHIP05%1/8W JC1071-216-296-00METAL CHIP05%1/8WJC1081-216-864-11METAL CHIP05%1/16W JC1091-216-295-00METAL CHIP05%1/10W JC1101-216-295-00METAL CHIP05%1/10W JC1111-216-296-00METAL CHIP05%1/8W< COIL >L11-416-596-11COIL (RF) (FM TRACKING)L21-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING) L31-416-595-11COIL (OSC) (FM FREQUENCY COVERAGE)L41-415-962-11COIL (OSC) (AM FREQUENCY COVERAGE)L4011-412-991-11INDUCTOR10uHL7011-412-995-21INDUCTOR22uHL7021-412-973-11INDUCTOR0.33uH<LIQUID CRYSTAL>ND7011-803-764-11DISPLAY PANEL, LIQUID CRYSTAL< PHOTO INTERRUPTER >PH7518-749-016-61REFLECTOR NJL5197K-W-F20(TE1)< TRANSISTOR >Q28-729-602-21TRANSISTOR 2SC4154-F (US,CND,5E,6E) Q518-729-420-24TRANSISTOR 2SB1218A-QRSQ528-729-402-13TRANSISTOR XN1501Q538-729-015-76TRANSISTOR UN5211Q3038-729-402-13TRANSISTOR XN1501Q3048-729-807-86TRANSISTOR 2SB1295-UL5Q3058-729-015-76TRANSISTOR UN5211Q4018-729-602-21TRANSISTOR 2SC4154-FQ6038-729-421-26TRANSISTOR UN5216Q6048-729-046-89TRANSISTOR 2SB970-S(TX).S0Q6058-729-046-89TRANSISTOR 2SB970-S(TX).S0Q6068-729-046-89TRANSISTOR 2SB970-S(TX).S0Q6078-729-421-26TRANSISTOR UN5216Q7018-729-602-21TRANSISTOR 2SC4154-FQ7028-729-231-96TRANSISTOR 2SK880GR-TE85LQ7038-729-423-55TRANSISTOR 2SC3931-DQ7518-729-421-26TRANSISTOR UN5216Q7528-729-420-24TRANSISTOR 2SB1218A-QRS< RESISTOR >R11-216-853-11METAL CHIP470K5%1/16W R21-216-853-11METAL CHIP470K5%1/16W R31-216-853-11METAL CHIP470K5%1/16W R41-216-821-11METAL CHIP1K5%1/16W R51-216-853-11METAL CHIP470K5%1/16W R61-216-853-11METAL CHIP470K5%1/16W R71-216-853-11METAL CHIP470K5%1/16W R81-216-864-11METAL CHIP05%1/16W R91-216-817-11METAL CHIP4705%1/16W R101-216-827-11METAL CHIP 3.3K5%1/16WMAINRef. No.Part No.Description Remark Ref. No.Part No.Description RemarkR111-216-296-91SHORT0R121-216-833-91RES-CHIP10K5%1/16W R131-216-821-11METAL CHIP1K5%1/16W R141-216-845-11METAL CHIP100K5%1/16W(EXCEPT US,CND,5E,6E) R151-216-827-11METAL CHIP 3.3K5%1/16WR161-216-821-11METAL CHIP1K5%1/16W R171-216-839-11METAL CHIP33K5%1/16W R181-216-839-11METAL CHIP33K5%1/16W R191-216-815-11METAL CHIP3305%1/16W R201-216-821-11METAL CHIP1K5%1/16W(US,CND,5E,6E)R211-216-864-11METAL CHIP05%1/16W R221-216-864-11METAL CHIP05%1/16W R521-216-819-11METAL CHIP6805%1/16W R531-216-829-11METAL CHIP 4.7K5%1/16W R541-216-847-11METAL CHIP150K5%1/16WR551-216-833-91RES-CHIP10K5%1/16W R1001-216-864-11METAL CHIP05%1/16W(EXCEPT E,EA,9E,CH) R1071-216-791-11METAL CHIP 3.35%1/16W(US,CND) R1071-216-797-11METAL CHIP105%1/16W(EXCEPT US,CND,FR) R1071-216-811-11METAL CHIP1505%1/16W(FR)R1081-216-811-11METAL CHIP1505%1/16W(EXCEPT US,CND,FR) R1081-216-817-11METAL CHIP4705%1/16W(US,CND,FR) R1091-216-825-11METAL CHIP 2.2K5%1/16W R2071-216-791-11METAL CHIP 3.35%1/16W(US,CND) R2071-216-797-11METAL CHIP105%1/16W(EXCEPT US,CND,FR)R2071-216-811-11METAL CHIP1505%1/16W(FR) R2081-216-811-11METAL CHIP1505%1/16W(EXCEPT US,CND,FR) R2081-216-817-11METAL CHIP4705%1/16W(US,CND,FR) R2091-216-825-11METAL CHIP 2.2K5%1/16W R3041-216-821-11METAL CHIP1K5%1/16W R3051-216-821-11METAL CHIP1K5%1/16W R3101-216-821-11METAL CHIP1K5%1/16W R4011-216-845-11METAL CHIP100K5%1/16W R4021-216-821-11METAL CHIP1K5%1/16W R4031-216-845-11METAL CHIP100K5%1/16WR4041-216-813-11METAL CHIP2205%1/16W R6061-216-845-11METAL CHIP100K5%1/16W R6081-216-827-11METAL CHIP 3.3K5%1/16W R6091-216-833-91RES-CHIP10K5%1/16W R6101-216-821-11METAL CHIP1K5%1/16W R6111-216-864-11METAL CHIP05%1/16W R6121-216-841-11METAL CHIP47K5%1/16W R6131-216-817-11METAL CHIP4705%1/16W R6141-216-817-11METAL CHIP4705%1/16W R6151-216-817-11METAL CHIP4705%1/16WR7001-216-829-11METAL CHIP 4.7K5%1/16W R7011-216-835-11METAL CHIP15K5%1/16WR7021-216-841-11METAL CHIP47K5%1/16W R7031-216-805-11METAL CHIP475%1/16W R7041-216-835-11METAL CHIP15K5%1/16WR7051-216-837-11METAL CHIP22K5%1/16W R7061-216-825-11METAL CHIP 2.2K5%1/16W R7071-216-864-11METAL CHIP05%1/16W R7081-216-845-11METAL CHIP100K5%1/16W R7111-216-821-11METAL CHIP1K5%1/16WR7151-216-853-11METAL CHIP470K5%1/16W R7221-216-821-11METAL CHIP1K5%1/16W R7231-216-821-11METAL CHIP1K5%1/16W R7241-216-821-11METAL CHIP1K5%1/16W R7261-216-833-91RES-CHIP10K5%1/16W R7271-216-833-91RES-CHIP10K5%1/16W R7281-216-833-91RES-CHIP10K5%1/16W R7291-216-833-91RES-CHIP10K5%1/16W R7511-216-817-11METAL CHIP4705%1/16W R7521-216-851-11METAL CHIP330K5%1/16WR7531-216-853-11METAL CHIP470K5%1/16W R7541-216-821-11METAL CHIP1K5%1/16W R7551-216-853-11METAL CHIP470K5%1/16W R7561-216-853-11METAL CHIP470K5%1/16W R7571-216-853-11METAL CHIP470K5%1/16W R7581-216-853-11METAL CHIP470K5%1/16W R7591-216-845-11METAL CHIP100K5%1/16W R7611-216-833-91RES-CHIP10K5%1/16W R7701-216-833-91RES-CHIP10K5%1/16W R7711-218-871-11METAL CHIP10K0.5%1/16W< VARIABLE RESISTOR >RV3011-225-362-11RES, VAR, CARBON (w VOL)RV6011-241-784-11RES, ADJ, CARBON 5K (TAPE SPEED)< SWITCH >S3011-771-040-21SWITCH, PUSH (OPEN DET)S6011-771-598-11SWITCH, SLIDE (RVS/REW/FF/FWD)S7011-572-922-11SWITCH, SLIDE (HOLD .)< TRANSFORMER >T11-416-594-11TRANSFORMER, IF (AM IF)T4011-449-021-21TRANSFORMER, DC/DC CONVERTER< THERMISTOR >TH6011-810-794-11THERMISTOR, POSITIVE< VIBRATOR >X11-781-367-21FILTER, CERAMIC(DISCRIMINATOR)X7011-577-262-11VIBRATOR, CRYSTAL (75kHz)**************************************************************MISCELLANEOUS**************HP9011-500-555-11HEAD, MAGNETIC (PLAYBACK)L21-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING) M9011-763-073-11MOTOR, DC (CAPSTAN/REEL)(INCLUDING PULLEY) ND7011-803-764-11DISPLAY PANEL, LIQUID CRYSTAL**************************************************************MAINRef. No.Part No.Description Remark Ref. No.Part No.Description Remark。
VCD数码机芯电路系统ppt课件
第三章 VCD影碟机数码机芯电路系统工作原理
3.1 激光头电路的工作原理及检修方法
进给伺服控制信号送 到ICS4，经驱动放大 后驱动进给电机，带 动激光头沿径向运动， 对光盘轨迹进行扫描； 主轴伺服控制信号送 到ICS4，经驱动放大 后驱动主轴电机带动 光盘作恒线速度转动；
2
第三章 VCD影碟机数码机芯电路系统工作原理
34
3.2.1 聚集伺服电路原理及检修方法
（2〕聚焦伺服电路分析
1〕索尼聚焦伺服电路
此时在A，B和C，D上的光通量不等，即 (A+C)(B+D)≠0，此误差信号为聚焦驱动电流的依据，经电路处 理后控制聚焦线圈动作，使聚焦达到最佳状态。
信号流程如书中图3.4所示，4分光敏接收器A，B，C， D接收主光束并转变为相应电信号→送入D110产生聚焦误 差信号→经D109进行数字处理，转变为聚焦PWM信号从 ⑧，⑨脚输入D105进行聚焦驱动后将控制信号加于聚焦线 圈→聚焦线圈受控带动物镜上下微动重新聚焦。
5
（1〕激光头电路基本工作原理
反映光盘播放信息
A
A+B+C+D
RFO
B
（A+C）-（B+D）
FEO
用于聚集伺服控制
C
D
用于循迹伺服控制
E
F
E-F
TEO
LD 驱动
PD
APC
LD-ON 系统控制
VR
用于调节PD的初始工作电流
6
（1〕激光头电路基本工作原理
7
（1〕激光头电路基本工作原理
8
9
TDA1300
心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的1激光头电路基本工作原理ldpd驱动efapcldon系统控制rfofeoteovr反映光盘播放信息用于聚集伺服控制用于循迹伺服控制用于调节pd的初始工作电流心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的1激光头电路基本工作原理心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的1激光头电路基本工作原理心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的10心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的tda1300tda1300内部结构11心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的tda1300引脚名称o4输出电流放大器o6输出电流放大器o3输出电流放大器o1输出电流放大器o5输出电流放大器o2输出电流放大器ldon开启和关闭激光控制引脚ddl激光电源电压rfe总和信号放大器1至4的输出电压10rf射频输出11hg控制增益开关引脚12ls控制高速开关引脚12心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的tda1300引脚名称13cl外部电容14adj功率检测二极管控制15gnd16lo激光输出电流输出17mi激光功率检测二极管的输入18dd电源19i2光电探测器输入2central20i5光电探测器输入5satellite21i1光电探测器输入1central22i3光电探测器输入3central23i6光电探测器输入6satellite24i4光电探测器输入4central13心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的单极电流输入中央二极管信号输入10单极电流输入辅助二极管信号输入11单极电流输入辅助二极管信号输入12模拟电源电压13振荡器的参考输入14测试输入1tda1301t14心脑血管病是世界卫生组织总干事讲过只要采取预防措施就能减少一半的死亡也就是说一半的死亡完全是可以预防的15测试输入216脱轨探测器输出17时钟输出1
SONY电视维修实例三十例
SONY电视维修实例三十例作者：为民服务文章来源：不详点击数：261 更新时间：2006-10-311.故障实例:索尼KP-EF61MG型(背投影彩电)三无待机指示灯不亮闪烁开机后即自动保护，面板上的待机指示灯不停闪烁。
根据现象分析，问题可能出在I2C总线被控电路。
检修时，打开机盖，用万用表测电源电路输出的各电源电压均正常，开机瞬间用示波器测行输出级，发现行输出级没有工作。
该机采用了先进的FC总线技术，机内的各主要集成电路，都挂在总线的时钟线、数据线上，总线电路中，有一个主控集成电路，若干个被控集成电路。
主控集成块一般由电脑(CPU)承担。
每个被控集成电路都编有不同的地址码，主控电脑块利用时钟线、数据线，根据不同的地址码，选中不同的被控集成电路，要求它接收电脑指令或是向电脑供电、外部晶振不正常等引起该1C不工作时，在开机瞬间该被控IC就不能向电脑反馈工作正常的信息，电脑就会进入保护关机状态。
该机中总线上的被控集成电路有大约十个，但只有CXA2050S(行／场振荡、亮／色处理)、M24C08FM6T(配属电脑块的El'ROM)损坏时，会造成开机保护，而其它被控集成电路损坏时不影响正常的开机。
该机经检查为CXA2050S内部损坏。
更换CXA2050S集成块后，机器故障排除。
2故障实例:索尼KP-EF48MC型(背投影彩电)满屏红光栅有回扫线开机后屏幕为红色光栅，且有满屏回扫线。
根据现象分析，问题可能出在聚焦控制电路。
索尼背投彩电有一聚焦盒组件，行输出变器输出的高压进入此组件，经内部六个电阻电位器分压，分别给投影管提供加速极电压、聚焦电压(共六根输出线)。
运输或使有中振动会造成聚焦组件某一引线虚接、开路。
该机经检查为聚焦组件一引线虚接而使红管加速极电压太高，造成红色回扫线。
重新接好并重调红管加速极电压，使图像恢复正常，机器故障排除。
3故障实例: 索尼KV-3400RM679型三无电源指示灯不亮开机后无光栅无图像无伴音，电源指示灯不亮。