Sanyo PLC-XU32 Service Manual

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Sanyo PLC-XU32 Service Manual Manual pdf 39 page image

-39-1. No drive signals supplied at motorsCheck drive signals at pins 1 to 4 of K6U on Power Board.Check ICs IC5501, IC5551 and peripheral circuits. Checkmotor drive power supply (9VMCI).2. No drive signals supplied at motor drive ICs.Check drive signals at pins 3-4 (ZOOM), 5-6 (FOCUS) ofk6S. Check IC801.3. No drive signals output from CPU.Check drive signals at pins 29,30, 33, 34 of IC801(SUBCPU). Check IC801.4. No key switch signals input to CPU.Check signals at pins 50 to 52 of IC801 when pressing thekey buttons. Check key buttons.Troubleshooting1733429303314 52515053 171 6151652IC5551FOCUSMOTOR DRIVEIC1881BUFFERIC801SUB CPU173453 434IC5501ZOOMMOTOR DRIVEMMFOCUSMOTORZOOMMOTORK6U K6S K8SK8AK68AKEY SW BOARDMAIN BOARDPOWER BOARD9V MCI15VFOCUS +FOCUS -ZOOM +ZOOM -3 4 53 4 5FOCUSZOOMLEVEL +LEVEL -PowerSupplyCircuitQ65AQ65B Q65C5V_SW POWERON: HON: HLogic Table of IC5501/IC5551Input Output Operation4 5 7 1H L L H Forward driveL H H L Reverse driveH H L L BrakingL L - - Stand byLens Motor ProblemsIC2161D/AAV/PC 78IC1831D/AAUDIO MUTEIC1881BUFFER137MUTEIC5011AUDIO-SW11321210111514PC_L/RAV_L/RIC001AUDIOCONTROL21468Q5072Q1816Q1817Q1818Q1819Q011AV/PCQ5031Q5041Q5051Q5061Q5081Q5082 MUTEVOLUMESPEAKER7 2323147SCL2_5SDA2_5SCL1_5SDA1_5IC801SUBCPU80,8179,78COMPUTERAUDIO INVIDEOAUDIO INMONITORAUDIO OUT2930272821|2431321,3K3UK10UK8FAV BOARD MAIN BOARDPC: HAV : LMUTE On: HMUTE On: HNo Sound1. No audio signals at AV input circuit.Check audio signals at pins14 and 15 of IC5011 on the AVBoard. Check IC5011 and peripheral circuits.2. Incorrect operation of VIDEO/COMPUTER modeswitching.Check AV/PC switching signal at pins 10 and 11 of IC5011.Check IC5011, IC801 and switching signal.AV : Low, PC : High3. No audio output signal at speaker.Check audio signal at pins 1 and 3 of K8F on the MainBoard.Check MUTE signal at pin 1 of IC001.Mute On : LowCheck MUTE signal at pin 7 of IC1831, pins 7 and 13 ofIC1881, and peripheral circuit.Mute On : HighCheck sound volume signal at pin 4 of IC001, and pin 14of IC1831.Check IC IC001, IC1831 and peripheral circuit.Volume Min.: Low4. No power supply at audio circuit.Check 6V(6V AUDIO) power supply line.