3-23
B.
Does tray open or close?
Does the pick-up
slide inner or outer
track?
Fig.1. SLED Driver waveform
Fig.2. Focus Driver waveform
Does
the voltage change
at CON203 Pins 15,16 more than
2V on the basis of
2.2V?
Pressing
the open/close key
repeatedly, check the voltage of IC2M1
Pin17 change
0V to 5V
Does
CON203 Pin1 change
high to low?
Does
the pick-up lens move up
and down?
Check Focus Driver output.
(IC207 Pin 88, IC2M1 Pins 13, 14)
Check SLED Driver output.
IC201 Pin 80, IC2M1 Pin 15, 16.
IC207 Pin 80 no output : IC207 is defective
IC2M1 Pin 15 no output : IC2M1 is defective
IC201 Pin 88 no output : IC201 is defective
IC2M1 Pins 13, 14 no output : IC2M1 is defective
DECK assembly is defective.
Slide the pick-up to
inner track.
.Power on
Check loading Part.
Push Pick-up to inner track to
the end by hand.
DECK assembly is defective.
(Limit sw)
check
µ
-COM Part.
Replace IC2M1.
No disc
END
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Summary of Contents for DVP7771
Page 8: ...2 3 Deck Mechanism Section 430 430 001 430 002 002 006 005 004 003 002 431 431 007...
Page 32: ...MEMO...
Page 37: ...3 15 3 16 LCD P C BOARD LOCATION GUIDE LOCATION GUIDE...
Page 38: ...MEMO MEMO...
Page 44: ...3 42 3 43 6 PANTER CIRCUIT DIAGRAM waveforms page 3 58 3 59 2002 02 01 R14113A...
Page 45: ...3 44 3 45 7 MEMORY CIRCUIT DIAGRAM 2002 02 01 R14114A...
Page 47: ...3 48 3 49 9 CPLD CIRCUIT DIAGRAM 2002 02 01 R14116A...
Page 54: ...3 62 3 63 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE LOCATION GUIDE...
Page 55: ...3 64 3 65 2 FRONT KEY P C BOARD LOCATION GUIDE LOCATION GUIDE...
Page 56: ...MEMO MEMO...
