20
XV-DV282AP
1
2
3
4
A
B
C
D
E
F
1
2
3
4
5.2 DVD TROUBLE SHOOTING
No.
Symptoms
Dia
g
nosis Contents
Possible Defective Points
1
The power is not turned on. Are wires of output connector (POWER SUPPLY Unit) and C
N
96
8
(09
D
V
DM Assy) disconnected or damaged ?
Connector / cable
Check that the following voltage is output :
C
N
96
8
-pin 24 or pin 25 (09 D
V
DM Assy): 3.3
V
POWER SUPPLY Unit
2
An opening screen is not
displayed on the monitor
(The FL display lights. The
mechanism does not work.)
Are the signals output from IC201-pin 97 (MDATA) and pin 9
8
(SCLK)
on the 09 D
V
DM Assy ? (in the range of 0 to 3
V
)
09 DVDM Assy
D
V
D IC (IC201)
Are the signals input into IC1001-pin
8
5 (MDATA) and pin
8
6 (SCLK) on
the SYSMAI
N
Assy ? (in the range of 0 to 3
V
)
SYSMAIN Assy
UCOM (IC1001)
Check that the following voltage are output :
R110
8
(
V
+5
V
) on the SYSMAI
N
Assy: 5
V
POWER SUPPLY Unit /
SYSMAIN Assy
R110
8
Is a resonator (X201: 27 MHz) on the 09 D
V
DM Assy oscillating ?
09 DVDM Assy
Crystal resonator (X201)
D
V
D IC (IC201)
• Is a signal input into IC203-pin26 (PCE#) on the 09 D
V
DM Assy ?
(Is a signal "H" for
8
0 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 3
8
(SDCLK) on the 09 D
V
DM Assy ?
(Is a signal fluctuating ?)
-> Communication with SDRAM
09 DVDM Assy
D
V
D IC (IC201)
Flash ROM (IC203)
SDRAM (IC202)
Is a signal output from IC203-pin 2
8
(PRD#) on the 09 D
V
DM Assy?
(Is a signal fluctuating for several hundred ms after the power is turned
on ?)
09 DVDM Assy
Flash ROM (IC203)
Is a signal input into IC1001-pin 11 (D
V
D ACK) on the SYSMAI
N
Assy ? (Is a signal fluctuating ?)
-> Communication with FL Control IC
09 DVDM Assy
D
V
D IC (IC201)
SYSMAIN Assy
UCOM (IC1001)
Is a signal output from IC1001-pin 13 (XREADY) on the SYSMAI
N
Assy
? (Is a signal fluctuating in the range of 0 to 3.3
V
?)
SYSMAIN Assy
UCOM (IC1001)
Are the signals output from IC1001-pin
8
4 (SDATA) on the SYSMAI
N
Assy ? (in the range of 0 to 3.3
V
)
09 DVDM Assy
D
V
D IC (IC201)
SYSMAIN Assy
UCOM (IC1001)
Are the signals of IC204-pin 5 (SDA) and pin 6 (SCL) on the 09 D
V
DM
Assy fluctuating for one or two seconds after the power is turned?
09 DVDM Assy
EEPROM (IC204)
3
An opening screen is not
displayed on the monitor
(The FL display lights. The
mechanism works.)
Check the video signal path between D
V
D IC (09 D
V
DM Assy IC201)
and video-out terminal (see the block diagram)
09 DVDM Assy
V
ideo circuit after D
V
D IC
(IC201)
Symptoms that may occur when any of the followin
g
ICs is in failure
IC
Symptoms
EEP ROM
(09 D
V
DM Assy : IC204)
User's data cannot be stored in memory.
The ID number is lost.
Flash ROM
(09 D
V
DM Assy : IC203)
The power cannot be turned on.
Downloading of the firmware cannot be performed.
DVD IC
(09 D
V
DM Assy : IC201)
Any kind of symptoms (no power, a failure in any of the servo, video and audio systems, USB etc.) may be
generated, because the D
V
D processing is performed by a single chip.
64M SDRAM
(09 D
V
DM Assy : IC202)
N
o power.
Block noise is generated during playback.
Содержание XV-DV180
Страница 13: ...13 XV DV282AP 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 18: ...18 XV DV282AP 1 2 3 4 A B C D E F 1 2 3 4 4 3 DVD LOADER DECODER BLOCK DIAGRAM ...
Страница 67: ...67 XV DV282AP 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 76: ...76 XV DV282AP 1 2 3 4 A B C D E F 1 2 3 4 10 11 POWER SUPPLY UNIT H CN1 AC POWER CORD LIVE NEUTRAL ...
Страница 77: ...77 XV DV282AP 5 6 7 8 5 6 7 8 A B C D E F H CN2 CN3 H POWER SUPPLY UNIT XWR3020 CN3201 D 1 2 JP1002 B 1 3 ...
Страница 91: ...91 XV DV282AP 5 6 7 8 5 6 7 8 A B C D E F H H SIDE B SIDE B H POWER SUPPLY ASSY ...
