DV-700S
DV-760S/H
YesNoNo
NoYesNoYes
Check the LD-REV/FWD signal line between the IC702 and the IC504.Check AT 8V line.Is 8V voltage applied to the pin(21) of IC702?Replace IC702.Check the line between the IC702 and the AG connector.See FLOW CHART NO.14<The disc is ejected. (In case focus servo does not function.)>Is there input signal on the pins (49, 54), (50, 55), (46, 52), and (47, 53) of IC303?Is there output signal on the pins(18),(17),(16) and (15) of IC301?Check the connection of optical pickup cable. If it is normal, replace the optical pickup.Check the line between the pin(21) of IC303 and pin(38) of IC707.Check the IC707 power source periphery circuit. If it is normal, replace IC707.Check the focus control signal (FOO) line between the IC702 and the IC504.Check AT 8V line.Is 8V voltage applied to the pin(21) of IC702?Replace IC702.Check the line between the IC702 and the AB connector.
NoNoNoNoNoNoNoNoNoNo
Yes
YesYesYesYesYesYesYesYesYes
FLOW CHART NO.12The disc tray cannot be opened and closed.Is the signal from the pins(70) and (69) of IC504 input into the pins(6) and (7) of iC702?Is loading motor drive voltage output from the pins(10) and (11) of IC702?Is the loading motor drive voltage applied to the pins(3) and (2) of AG connector?Check for mechanism and gear engagement and breakage.FLOW CHART NO.13The disc is ejected.(In case of focus error)Does the objective lens of optical pickup move up and down after the disc is removed? (Checking of symptom).Is FE signal output to the pin(21) of IC303 when the disc is set?FLOW CHART NO.14The disc is ejected.(In case of focus servo does not function.)Is FE signal inputted at pin(38) of IC707? (Checking of symptom.)Is the focus control signal output to the pin(43) of IC707?Is the focus control signal from the pin(43) of IC504 input into the pin(19) of IC702?Is the focus control drive voltage output from the pins(17) and (18) of IC702?Is the focus control drive voltage applied to the pins(4) and (2) of AB connector?Check the connection of optical pickup cable. If it is normal, replace the optical pickup.
Replace the remote control receiver or replace the remote control transmitter is necessary.Check AT 5V line.Replace the remote control receiver.Check the line between the remote control receiver and the pin(32) of IC504.line.Check the IC9001 periphery circuit.Check the secondary circuit, AT 5V and PC 3.3V line.Check the IC9003 periphery circuit.Check the S8102 and OPEN/CLOSE KEY line.Replace IC8201.Check the TRAY ACK(L) line.
NoNoNoNoNoNoNoNoNoNo
YesYesYesYes
YesYesYesYesYesYesYes
FLOW CHART NO.8 No operation is possible from the infrared remote control.Operation is possible from the DVD, but no operation is possible from the infrared remote control.Is 5V voltage supplied to the pin(3) terminal of remote control receiver?Is the "L" pulse sent out pin(1) terminal of receiver when the infrared remote control is activated?Is pulse signal supplied to the pin(32) of IC504?Replace IC504.FLOW CHART NO.9PC 9V is not output.Is 12V voltage supplied at pin(3) of IC9001?NoCheck the secondary circuit, AT 12V and PC 12V Is there output at pin(1) of IC9001?Check for load circuit short-circuiting or leak.FLOW CHART NO.10PC 3.3V is not output.Is 5V voltage supplied at pin(1) of IC9003?Is there output at pin(2) of IC9003?Check for load circuit short-circuiting or leak.FLOW CHART NO.11The disc tray cannot be opened and closed.(For remote control is possible.)Are the "L" pulse inputted into the pin(13) of IC8201 when the KEY button is pressed?Are the "L" pulse outputted from the pin(10) of IC8201?Are the "L" pulse inputted into the pin(11) of IC8201?See FLOW CHART NO.12<The disc tray cannot be opened and closed.>
10-2 |
ACEC
