Toshiba Dvr4xsu Owners Manual
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TROUBLESHOOTING GUIDE E-25 D-VR4XSU/D-VR4XSC YES YES YES YESNO NO NO NO E-E AUDIO (STEREO) DOES NOT APPEAR Is the voltage at pin 25, 40 and 51 of IC701 5V ?Check POWER BLOCK. Check POWER BLOCK. Change IC701. Is there Audio signal at pin 9 and 14 of IC701 ? Is there Audio signal at pin 53 and 57 of IC701? Check circuit around of J8005.Check IC8301, J8002, J602 and J603. Is the voltage at pin 58 of IC701 12V ?
TROUBLESHOOTING GUIDE E-26 D-VR4XSU/D-VR4XSC YES YES YES YESNO NO NO NO TUNER AUDIO (MONO) DOES NOT APPEAR. Does E-E AUDIO (MONO) appear ?Refer to section E-E AUDIO (MONO) DOES NOT APPEAR. Check circuit around at pin 13 of TU301. Change IC701. Check IC701. Is there signal at pin 21 of IC801 ? Is there audio signal at pin 53 and 57 of IC701 ? Is there audio signal a emitter of Q8020 and Q8021 ? Check circuit around of J8005.
TROUBLESHOOTING GUIDE E-27 D-VR4XSU/D-VR4XSC YES YES YES YES YES YESNO NO NO NONO NO TUNER AUDIO (STEREO) DOES NOT APPEAR. Does TUNER AUDIO (MONO) appear ?Refer to section TUNER AUDIO (MONO) DOES NOT APPEAR. Refer to section E-E AUDIO (STEREO) DOES NOT APPEAR. Does E-E AUDIO (STEREO) appear ? At the time of channel change,does the display of a stereo come out to the screen ? Is there audio signal at pin 21 of IC801 ?Check circuit around of TU301. Change IC701. Check IC701. Is there audio signal a collector of Q8020 and Q8021 ? Check circuit around of J8005.Change IC701. Is there audio signal at pin 53 and 57 of IC701 ?
TROUBLESHOOTING GUIDE E-28 D-VR4XSU/D-VR4XSC YES YES YES YESNO NO NO NO PB AUDIO (Hi-Fi) DOES NOT APPEAR Does E-E AUDIO (STEREO) appear ? Does NORMAL PB AUDIO appear ? Is there audio signal at pin 22 and 24 of IC701 ? Is there audio signal at pin 53 and 57 of IC701 ? Check circuit around of J8005.Refer to section E-E AUDIO (STEREO) DOES NOT APPEAR. Refer to section AT PLAY, AUDIO DOES NOT APPEAR. Check circuit of HEAD AMP and CYLINDER UNIT. Change IC701.
TROUBLESHOOTING GUIDE E-29 D-VR4XSU/D-VR4XSC YES YES YES YESNO NO NO NO Hi-Fi AUDIO CAN NOT RECORD Does E-E AUDIO appear ? AT state of video recording, is there audio signal at pin 9 and 14 of IC701 ? Is there audio signal at pin 53 and 57 of IC701 ? At recording and play, is there signal at pin 7, 8 and 9 of CP101 ? Check IC701.Check CYLINDER UNIT.Change IC701. Check circuit around of IC8301, J601, J602, J8002 and TU301.Refer to section E-E AUDIO (MONO) DOES NOT APPEAR.
TROUBLESHOOTING GUIDE E-30 D-VR4XSU/D-VR4XSC Yes No Yes DECK DOES NOT ACCEPT OPEN/CLOSE Is the voltage at pin 1 of CP504 about DC12V ? and pin 4 of CP504 about DC5V ?Check P.CON 12V and P.CON+D5V line of POWER BLOCK. No Is the lose connection at CD504 to CP504 and DECK ? Check CD504 connection to CP504 and DECK. Check DECK. (DVD SECTION)
TROUBLESHOOTING GUIDE E-31 D-VR4XSU/D-VR4XSC E-E DOES NOT APPER AT DVD MODE No Yes No Yes No Yes Check VCR block. Check IC8501 and peripheral circuit. Check IC8501 and peripheral circuit. Check VCR block. Is there a signal in at pin 54, 62~64, 66~69, 71, 72 and 73 of IC8501 with each output mode ? Is there a signal in at pin 5, 11, 19 and 54 of IC8501 ? Is there a signal in at pin 1, 3 and 5 of CP7304 ?
TROUBLESHOOTING GUIDE E-32 D-VR4XSU/D-VR4XSC E-E AUDIO DOES NOT APPEAR No NoCheck VCR block. Yes Yes Check IC4001 and peripheral circuit. Is there a signal in at pin 1, 2 and 3 of IC7301 ? Is there a signal in at pin 2, 4, 6 and 8 of CP7303 with each input ? No Yes Is there a signal in at pin 1, 2, 11, 12 and 15 of IC7302 and F10, D9 and A6 of IC4001 ?Check IC7302, IC4001 and peripheral circuit. Go to NO AUDIO ON PLAYBACK. No YesCheck IC7301 and peripheral circuit. Is there a signal in at pin 7 and 8 of IC7301 ?
TROUBLESHOOTING GUIDE E-33 D-VR4XSU/D-VR4XSC TUNER AUDIO OF DVD MODE DOES NOT APPEAR No NoCheck IC8301 and peripheral circuit. Yes Yes Check IC4001 and peripheral circuit. Is there a signal in at pin 1, 2 and 3 of IC7301 ? Is there a signal in at pin 2 and 4 of CP7301 with each input ? No Yes Is there a signal in at pin 1, 2, 11, 12 and 15 of IC7302 and F10, D9, A6 of IC4001 ?Check IC7302, IC4001 and peripheral circuit. Go to NO AUDIO ON PLAYBACK. No YesCheck IC7301 and peripheral circuit. Is there a signal in at pin 7 and 8 of IC7301 ?
TROUBLESHOOTING GUIDE E-34 D-VR4XSU/D-VR4XSC NO PLAYBACK PICTURE OF AV JACK Check IC4001 and peripheral circuit.Is there VIDEO signal at pin A9 and D11 of IC4001 ?No Yes Is the waveform at pin 30 of IC8301 ?No YesCheck IC8301 and peripheral circuit. Check J8005 and peripheral circuit.