Dvd Trouble Shooting - Pioneer XV-EV1000 Service Manual

1

7.1.8 DVD TROUBLE SHOOTING

No. Symptoms
A 1 The power is not turned on. Are wires of output connector (POWER SUPPLY Unit) and CN901
2 An opening screen is not
displayed on the monitor
(The FL display lights. The
mechanism does not work.)
B
C
D
An opening screen is not
3
displayed on the monitor
(The FL display lights. The
mechanism works.)
E
F
104
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2
Diagnosis Contents
(DVDM Assy) disconnected or damaged ?
Check that the following voltage is output :
+ side of C739 : 3.3V
Are the signals output from IC201-pin 98 (MDATA) and pin 99 (SCLK)
on the DVDM Assy ? (in the range of 0-3V)
Are the signals input into IC5501-pin 50 (MDATA) and pin 51 (SCLK)
on the IFAF Assy ? (in the range of 0-3V)
Check that the following voltage are output :
IC751-pin 1 on the DVDM Assy : 5V
Is a resonator (X201: 27MHz) on the DVDM Assy oscillating ?
• Is a signal input into IC203-pin26 (PCE#) on the DVDM Assy ?
(Is a signal "H" for 80 mS and then "L" after the power is turned
on ?)
→ Communication with flash ROM.
• Are the signals input into IC202-pin 16 (DWE#), pin 19 (DCS#)
and pin 38 (SDCLK) on the DVDM Assy ?
(Is a signal fluctuating ?)
→ Communication with SDRAM
Is a signal output from IC203-pin 28 (PRD#) on the DVDM Assy?
(Is a signal fluctuating for several hundred mS after the power is turned
on ?)
Is a signal input into IC5501-pin 67 (DVD ACK) on the CONTROL
Assy ? (Is a signal fluctuating ?)
→ Communication with FL Control IC
Is a signal output from IC5501-pin 30 (XREADY) on the CONTROL
Assy ? (Is a signal fluctuating in the range of 0-5V ?)
Are the signals output from IC5501-pin 49 (SDATA) on the CONTROL
Assy ? (in the range of 0-5V)
Are the signals of IC204-pin 5(SDA) and pin 6(SCL) on the DVDM Assy
fluctuating for one or two seconds after the power is turned ?
Check the video signal path between DVD IC (DVDM Assy IC201) and
video-out terminal (see the block diagram)
XV-EV1000
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3
Possible Defective Points
Connector / cable
DVDM Assy
3.3V Regulator IC (IC341)
DVDM Assy
DVD IC (IC201)
IFAF Assy
UCOM (IC5501)
DVDM Assy
5V Regulator IC (IC751)
DVDM Assy
Crystal resonator (X201)
DVD IC (IC201)
DVDM Assy
DVD IC (IC201)
Flash ROM (IC203)
SDRAM (IC202)
DVDM Assy
Flash ROM (IC203)
DVDM Assy
DVD IC (IC201)
IFAF Assy
UCOM (IC5501)
IFAF Assy
UCOM (IC5501)
DVDM Assy
DVD IC (IC201)
IFAF Assy
UCOM (IC5501)
DVDM Assy
EEPROM (IC204)
DVDM Assy
Video circuit after DVD IC
(IC201)
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