XV-HTD540
102
1
2
3
4
1
2
3
4
C
D
F
A
B
E
DVD Section
No.
Symptoms
Diagnosis Contents
Possible Defective Points
1
An opening screen is not
displayed on the monitor
(The FL display lights. The
mechanism does not work.)
Is the level at both IC5501-pin 93 (XDVDRST) and pin 1(DVD ON/OFF)
on the AF Assy "H" ?
µ
com (AF IC5501)
Check the voltage of CN911-pin 28 and 29 (VPR+8) on the DVDM
Assy.
DVDM Assy CN911
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
Each regulator on the DVDM
Assy
Are resonators (27MHz, 20MHz) on the DVDM Assy oscillating ?
Crystal resonator
(DVDM Assy X601 and X301)
Refer to contents of an FE error displayed on the FL display.
(SRAM defectiveness, I2C communication line defectiveness, etc.)
FRONT END IC
(DVDM IC301)
• 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
• BACK END IC (DVDM IC601)
• Flash ROM (DVDM IC603)
• 64M SDRAM (DVDM IC602)
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 ?)
µ
com (AF IC5501)
Is a signal input into IC5501-pin 67 (DVDACK) on the AF Assy ?
(Is a signal fluctuating ?)
→
Communication with
µ
com
• BACK END IC (DVDM IC601)
• Flash ROM (DVDM IC603)
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 ?)
µ
com (AF IC5501)
Are the signals output from IC5501-pin 23, 24 and 25 on the AF Assy ?
(in the range of 0-5V)
µ
com (AF IC5501) – BACK END
IC (DVDM IC601)
communication line
2
An opening screen is not
displayed on the monitor
(The FL display lights. The
mechanism does not work.)
Check the video signal path between BACK END IC (DVDM IC601) and
video-out terminal
(see the block diagram)
DVDM Assy
• Video circuit
• after BACK END IC (IC601)
3
4
A tray cannot be opened.
(An opening screen is
displayed on the monitor)
Rotary tray does not turn
(Opening screen is OK)
• Are wires of CN123 on the DVDM Assy disconnected or damaged ?
• Does the voltage of CN124 pin 3 to pin 6 on the DVDM Assy change
normally ?
• CN124 pin 6 (OPEN): Tray is fully closed: "H", Tray is fully opened: "L"
• CN124 pin 3 (CLAMP): Clamping: "L", Releasing the clamper: "H"
• Check each cable
(DVDM – TRSB/TRSB – SSRB/SSRB – TRAY motor)
• Is a signal output from IC601-pin 114 (ROT DRV) on the DVDM
Assy ? (Is a signal fluctuating of 0-3.3V ?)
• Is the motor drive voltage output it at CN124 pin 7 and pin 8 ?
Connector / wire
LOADING SW (SSRB S21)
CLAMP SW (TRSB S11)
Connector / cable
BACK END IC (DVDM IC601)
IC151 and peripheral parts of the
DVDM Assy
• Is a LOAD-DRVC signal reaching ?
• Are the signals output from IC151 pin 9 and pin 8 on the DVDM
Assy ?
Pin 9: Approx. 6V during opening tray approx. 0V during closing tray.
Pin 8: Approx. 0V during opening tray approx. 6V during closing tray.
• Does the voltage of CN122 pin 17 change by pressing the Inside
switch.
BACK END IC (DVDM IC601)
Carousel driver (DVDM IC151)
Inside switch
Содержание XV-DV8
Страница 26: ...XV HTD540 26 1 2 3 4 1 2 3 4 C D F A B E 3 6 DVDM ASSY 3 4 A 3 4 3V REG A 2 4 RSX201L 30 RSQ035P03 AD AD AD ...
Страница 33: ...XV HTD540 33 5 6 7 8 5 6 7 8 C D F A B E B 2 2 AUDIO DATA SIGNAL ROUTE AD ...
Страница 40: ...XV HTD540 40 1 2 3 4 1 2 3 4 C D F A B E 3 13 AF 3 4 ASSY D 3 4 D 1 4 TV TV TX L1 L1 FL FL TX FL FL FL JA3001 ...
Страница 45: ...XV HTD540 45 5 6 7 8 5 6 7 8 C D F A B E I J LOMB ASSY XWZ3857 J SSRB ASSY XWZ3856 I CN123 A 1 3 CN31 ...
