Pioneer RRV2930 Service Manual page 104

1
DVD Section
QQ
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No. Symptoms
A
An opening screen is not
displayed on the monitor
(The FL display lights. The
mechanism does not work.)
B
1
C
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L 13942296513
An opening screen is not
displayed on the monitor
2
(The FL display lights. The
mechanism does not work.)
A tray cannot be opened.
D
(An opening screen is
displayed on the monitor)
3
Rotary tray does not turn
E
(Opening screen is OK)
4
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Diagnosis Contents
Is the level at both IC5501-pin 93 (XDVDRST) and pin 1(DVD ON/OFF)
on the AF Assy "H" ?
Check the voltage of CN911-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 AF Assy ?
(Is a signal fluctuating ?)
→ Communication with µcom
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 AF 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 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"
• 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.
• 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 ?
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Possible Defective Points
µcom (AF IC5501)
DVDM Assy CN911
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 (AF IC5501)
µcom (AF IC5501)
µcom (AF IC5501) – BACK END
1 5 0 5 8 2 9 9 4
IC (DVDM IC601)
communication line
DVDM Assy
• Video circuit
• after BACK END IC (IC601)
Connector / wire
LOADING SW (SSRB S21)
CLAMP SW (TRSB S11)
BACK END IC (DVDM IC601)
Carousel driver (DVDM IC151)
Inside switch
Connector / cable
BACK END IC (DVDM IC601)
IC151 and peripheral parts of the
DVDM Assy
m
co
4
9 9
2 8 9 9