Pioneer XV-E51 Service Manual page 92

1
No. Symptoms
Cannot open a tray
A
(An opening screen is
displayed on the monitor)
4
B
Cannot playback
(Focus does not inn)
5
Cannot playback
C
(Spindle does not turn)
6
Cannot playback
(Playback stops)
D
7
Picture disturbance during
playback
8
(block noise, freeze, other)
Audio is not output
9
(Picture is normal)
E
F
92
1
2
Diagnosis Contents
Does voltage of CN9-pin 3 and 5 on the DVDM Assy change normally ?
pin 3 (XCLOSE) : It is "H" level by the state that has finished doing CLOSE.
pin 5 (OPEN) : It is "H" level by the state that has finished doing OPEN.
Does LOAD_DRV signal come ?
Is a signal output from IC351-pin 14 and 15 (CN9-pin 1 and 2) on the DVDM
Assy ?
(pin 15 : It is about 6V during tray opening, It is about 0V during tray closing)
(pin 14 : It is about 0V during tray opening, It is about 6V during tray closing)
Are not there wire rod coming out, damage the connectors of CN9 and
CN5 on the DVDM Assy ?
Does voltage of CN5-pin 1 on the DVDM Assy change when pressed
the inside switch ?
Are the signals output from IC351-pin 9 and 10 on the DVDM Assy ?
Does 650 LD emit light ?
Does a pickup lens do up / down ?
Does not an actuator spring bend ?
Are not resin part damage, a shaft missing ?
Are not there falling off of turn table, lean abnormality ?
Is not flexible cable of CN7 on the DVDM Assy coming off and
damaged ?
Is signal output from IC301-pin 123 (FACT) on the DVDM Assy ?
(Device control of around 500 mV is output usually. It is ± around 100
mV swing by focus up / down.)
Are the signals output from IC251-pin 2 (A3), pin 4 (A2) and pin 7 (A1)
on the DVDM Assy ?
It is fixed, and is not there pin 18 HIGH whethere it is fixed, and there is
not pin 23 LOW ?
Are not there part falling off, alien substance adhesion in spindle motor
part ?
Is not flexible cable of CN7 on the DVDM Assy coming off and
damaged ?
Is signal output from IC301-pin 123 (SPDL_PDM) on the DVDM Assy ? FRONT END IC (DVDM IC301)
Does not 650nm LD deteriorate ?
If there is the both ends voltage of R121 on the DVDM Assy more than
0.7V, 650nm LD deteriorates surely.
Does not 780nm LD deteriorate ?
If there is the both ends voltage of R123 on the DVDM Assy more than
1.2V, 780nm LD deteriorates surely.
Is not there abnormality in FG waveform ?
Are not there scratch and a dirt on the disc ?
Are not there scratch and a dirt on the disc ?
Do not you set a disc of standard outside ?
Check the waveform (BCK, LRCK, MCLK, DATA).
Is signal output from IC711-pin 7 and 8 on the JCKB Assy ?
XV-EV51
2
3
Defectiveness Assumption
Tray switch
BACK END IC (DVDM IC601)
FTS Driver IC
(DVDM IC351)
Connector / wire rod
Inside switch
FTS Driver IC (DVDM IC351)
Pickup
Mechanism Assy
Flexible cable / connector
FRONT END IC
(DVDM IC301)
Spindle Driver IC
(DVDM IC251)
Mechanism Assy (Spindle motor)
Flexible cable / connector
650nm LD deteriorates.
(Cannot playback DVD)
780nm LD deteriorates.
(Cannot playback CD)
FG output : Spindle Driver IC
(DVDM IC251)
Disc
Disc
BACK END IC (DVDM IC601)
AUDIO DAC IC (JCKB IC711)
3
4
Points
4