20
PD-D9MK2-K
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No.
Symptoms
Diagnosis Contents
Possible Defective Points
1
The power is not turned on. Are wires of output connector (POWER SUPPLY Unit) and CN901
(DVDM Assy) disconnected or damaged ?
Connector / cable
Check that the following voltage is output :
+ side of C739 : 3.3V
DVDM Assy
3.3V Regulator IC (IC341)
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 98 (MDATA) and pin 99 (SCLK)
on the DVDM Assy ? (in the range of 0-3V)
DVDM Assy
DVD IC (IC201)
Are the signals input into IC2101-pin 50 (MDATA) and pin 51 (SCLK) on
the LCD Assy ? (in the range of 0-3V)
LCD Assy
UCOM (IC2101)
Check that the following voltage are output :
IC751-pin 1 on the DVDM Assy : 5V
DVDM Assy
5V Regulator IC (IC751)
Is a resonator (X202: 27MHz) on the DVDM Assy oscillating ?
DVDM Assy
Crystal resonator (X202)
• 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
DVDM Assy
DVD IC (IC201)
Flash ROM (IC203)
SDRAM (IC202)
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 ?)
DVDM Assy
Flash ROM (IC203)
Is a signal input into IC2101-pin 67 (DVD ACK) on the LCD Assy ?
(Is a signal fluctuating ?)
→
Communication with FL Control IC
DVDM Assy
DVD IC (IC201)
LCD Assy
UCOM (IC2101)
Is a signal output from IC2101-pin 30 (XREADY) on the LCD Assy ? (Is
a signal fluctuating in the range of 0-5V ?)
LCD Assy
UCOM (IC2101)
Are the signals output from IC2101-pin 49 (SDATA) on the LCD Assy ?
(in the range of 0-5V)
DVDM Assy
DVD IC (IC201)
LCD Assy
UCOM (IC2101)
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 ?
DVDM Assy
EEPROM (IC204)
Addendum No.1
A tray cannot be opened.
(An opening screen is
displayed on the monitor)
LOAB Assy
Tray SW (S101)
Is the signal input into IC101-pin 11 (TROPEN) on the DVDM Assy ?
At open: 3.3V, At close: 0V
DVDM Assy
DVD IC (IC201)
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.
DVDM Assy
FTS Driver IC (IC101)
Are wires of CN104 and CN103 on the DVDM Assy disconnected or
damaged ?
Connector / cable
Does the voltage of CN102-pin 1 on the DVDM Assy change to 0V by
pressing the Inside switch.
Inside switch
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"
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