Troubleshooting Of The Sacd - Pioneer XC-Z9 Service Manual

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5.2 TROUBLESHOOTING OF THE SACD

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No. Symptoms
1 The power is not turned on. Are wires of output connector (MAIN Assy) and CN901 (DVDM Assy)
2 An opening screen is not
displayed on the monitor.
(The FL display lights. The
mechanism does not work.)
TE
L 13942296513
A tray cannot be opened.
3 (An opening screen is
displayed on the monitor)
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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 85 (MDATA) and pin 86 (SCLK)
on the MAIN Assy ? (in the range of 0-3V)
Check that the following voltage are output :
IC751-pin 1 on the DVDM Assy : 5V
Is a crystal resonator (X202: 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 11 (DVD ACK) on the MAIN Assy ?
(Is a signal fluctuating ?)
→ Communication with FL Control IC
Is a signal output from IC5501-pin 13 (XREADY) on the MAIN Assy ?
(Is a signal fluctuating in the range of 0-3V ?)
Are the signals output from IC5501-pin 84 (SDATA) on the MAIN Assy ?
(in the range of 0-3V)
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 ?
Does the voltage of CN104-pin 3 and pin 5 on the DVDM Assy change
normally ?
Pin 3 (SW2(TRIN)): Tray is fully closed: "L"
Pin 5 (SW1(TROUT)): Tray is fully opened: "L"
Is the signal input into IC101-pin 11 (TROPEN) on the DVDM Assy ?
At open: 3.3V, At close: 0V
Are the signals output from IC101-pin 1 and pin 2 (CN103-pin 1 and
pin 2) on the DVDM Assy ?
Pin 2: Approx. 6V during opening tray approx. 0V during closing tray.
Pin 1: Approx. 0V during opening tray approx. 6V during closing tray.
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Are wires of CN104 and CN103 on the DVDM Assy disconnected or
y
damaged ?
i
Does the voltage of CN102-pin 1 on the DVDM Assy change to 0V by
pressing the Inside switch.
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Diagnosis Contents
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XC-Z9
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Possible Defective Points
Connector / cable
DVDM Assy
3.3V Regulator IC (IC731)
DVDM Assy
DVD IC (IC201)
MAIN Assy
UCOM (IC5501)
DVDM Assy
5V Regulator IC (IC751)
DVDM Assy
Crystal resonator (X202)
DVDM Assy
DVD IC (IC201)
Flash ROM (IC203)
SDRAM (IC202)
0 5 8 2 9 9 4 2 8
DVDM Assy
Flash ROM (IC203)
DVDM Assy
DVD IC (IC201)
MAIN Assy
UCOM (IC5501)
MAIN Assy
UCOM (IC5501)
DVDM Assy
DVD IC (IC201)
MAIN Assy
UCOM (IC5501)
DVDM Assy
EEPROM (IC204)
LOAB Assy
Tray SW (S101)
DVDM Assy
DVD IC (IC201)
DVDM Assy
m
FTS Driver IC (IC101)
Connector / cable
Inside switch
9 9
A
B
C
9 9
D
E
F
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