Dvd Section - Pioneer XV-DV430 Service Manual

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QQ

DVD Section

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A
No. Symptoms
An opening screen is not
displayed on the monitor
(The FL display lights. The
mechanism does not work.)
B
1
C
TE
L 13942296513
An opening screen is not
displayed on the monitor
2
(The FL display lights. The
mechanism does not work.)
D
A tray cannot be opened.
(An opening screen is
displayed on the monitor)
3
E
www
F
102
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Is the level at both IC5501-pin 93 (XDVDRST) and pin 1(DVD ON/OFF)
on the CONTROL Assy "H" ?
Check the voltage of CN901-pin 28 and 29 (VPR+8) on the DVDM
Assy.
Check that the following voltages are output :
IC411-pin 3 : 1.8V, IC421-pin 3 : 1.8V and IC431-pin 1 : 5V on the
DVDM Assy
Are resonators (27MHz, 20MHz) on the DVDM Assy oscillating ?
Refer to contents of an FE error displayed on the FL display.
(SRAM defectiveness, I2C communication line defectiveness, etc.)
• Is a signal input into IC601-pin 132 (CE3) on the DVDM Assy ?
(Is a signal fluctuating for several seconds after the power is turned on ?)
→ Communication with flash ROM
• Are the signals input into IC602-pin 16 (SMIWE), pin 19 (SMICS0)
and pin 38 (SMICLK) on the DVDM Assy ?
(Is a signal fluctuating ?)
→ Communication with flash ROM
Is a signal output from IC603-pin 28 (CPU_OE) on the DVDM Assy?
(Is a signal fluctuating for several seconds after the power is turned on ?)
Is a signal input into IC5501-pin 67 (DVDACK) on the CONTROL Assy
?
(Is a signal fluctuating ?)
Is a signal output from IC5501-pin 29 and 30 (SYS_1, 2) on the AF
Assy ?
(Is a signal fluctuating in the range of 0-5V ?)
Are the signals output from IC5501-pin 23, 24 and 25 on the CONTROL
Assy? (in the range of 0-5V)
Check the video signal path between BACK END IC (DVDM IC601) and
video-out terminal
(see the block diagram)
• Are wires of CN103 on the DVDM Assy disconnected or damaged ?
• Is a LOAD-DRVC signal reaching ?
• Does the voltage of CN105 pin 1 change by pressing the Inside
switch
x ao
y
. i
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Diagnosis Contents
Q Q
3 6 7 1 3
u163
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XV-DV430
3
4
2 9 9 4 2 8
Possible Defective Points
µcom (CONTROL IC5501)
DVDM Assy CN901
Each regulator on the DVDM
Assy
Crystal resonator
(DVDM Assy X601 and X301)
FRONT END IC
(DVDM IC301)
• BACK END IC (DVDM IC601)
• Flash ROM (DVDM IC603)
• 64M SDRAM (DVDM IC602)
• BACK END IC (DVDM IC601)
• Flash ROM (DVDM IC603)
µcom (CONTROL IC5501)
µcom (CONTROL IC5501)
1 5 0 5 8 2 9 9 4
µcom (AF IC5501) – BACK END
IC (DVDM IC601)
communication line
DVDM Assy
• Video circuit
• after BACK END IC (IC601)
Connector / wire
LOADING SW (LOAB S101)
BACK END IC (DVDM IC601)
Inside switch
m
co
4
9 9
2 8 9 9