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Sweet! I won the item on eBay and couldn't adjust the geometry or even keep a steady picure. This guide has the full schematics (not available anywhere else as far as I could tell), and was a bargain for the wealth of knowledge it contains. I hooked it up to my testing equipment, tweaked a few potentiometers and got it playing videogames in no time. Thanks!
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It was just what I need to fix my old BMW's CD player. Very convenient also. Thank you.
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Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
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Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
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Good pdf of the service manual for this unit. Includes disassembly instructions, full schematics, board layouts, parts lists and diagnostic information. Some information is in the pdf twice (single pages, and split pages), but that could be how it was originally generated by panasonic, or perhaps the idea is to make it eaiser to put onto 8.5 x 11" pages.
Information was exactly what I needed. Delivery was overnight (less than 12 hours) and I was happy with the process.
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7.1.7 TROUBLE SHOOTING
No.
1
Symptoms
The power is not turned on.
Diagnosis Contents
Check the voltage of EV+4V, �28V and FLDC on the POWER SUPPLY Unit. Are wires of output connector (POWER SUPPLY Unit) and CN401 (DVDM Assy) disconnected or damaged ? Check that the following voltage is output : IC403-pin 5 : 3.3V on the DVDM Assy Check that the voltage at IC101-pin 22 (KEY0) on the FLKY Assy becomes 0 V when the POWER key is pressed and 3.3 V when it is released.
Possible Defective Points
POWER SUPPLY Unit
A
Connector / cable 3.3V Regulator IC (IC403) FLKY Assy Tact SW (when operation of only the POWER key on the main unit is not accepted)
FLKY Assy Check that the voltage at IC101-pin 17 (SEL IR) on the FLKY Assy is in Remote receiver section the range between 0 and 3.3 V while receiving signals from the remote (when operation of only the control unit when any key on it is pressed. POWER key on the remote control unit is not accepted) 2 An opening screen is not Is the level at both IC101-pin 12 (XRESET) and pin 11 (POWER ON) FLKY Assy displayed on the monitor on the FLKY Assy "H" ? FL Control IC (IC101) (The FL display lights. The � Check the voltage of E+6.8V and SW+3.3V on the POWER SUPPLY mechanism does not work.) Unit. POWER SUPPLY Unit � Check the voltage of P-CONT is about 3V on the POWER SUPPLY Unit. DVDM Assy Check that the following voltage are output : 5V Regulator IC (IC401) IC401-pin 5 : 5V, IC402-pin 5 : 2.5V on the DVDM Assy. 2.5V Regulator IC (IC402) DVDM Assy Is a resonator (X601 : 27MHz) on the DVDM Assy oscillating ? � Is a signal input into IC603-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 IC602-pin 16 (DWE#), pin 19 (DCS#) and pin 38 (SDCLK) on the DVDM Assy ? (Is a signal fluctuating ?) � Communication with SDRAM Crystal resonator (X601)
B
C
DVDM Assy DVD IC (IC601) Flash ROM (IC603) SDRAM (IC602)
Is a signal output from IC603-pin 28 (PRD#) on the DVDM Assy? DVDM Assy (Is a signal fluctuating for several hundred mS after the power is turned Flash ROM (IC603) on ?) DVDM Assy Is a signal input into IC101-pin 16 (ACK) on the FLKY Assy ? DVD IC (IC601) (Is a signal fluctuating ?) FLKY Assy � Communication with FL Control IC FL Control IC (IC101) Is a signal output from IC101-pin 10 (XREADY) on the FLKY Assy ? FLKY Assy (Is a signal fluctuating in the range of 0-3V ?) FL Control IC (IC101) DVDM Assy Are the signals output from IC101-pin 9, pin 8 and pin 7 on the FLKY DVD IC (IC601) � Assy ? FLKY Assy (in the range of 0-3V) FL Control IC (IC101) communication line Are the signals of IC60-pin 5(SDA) and pin 6(SCL) on the DVDM Assy DVDM Assy fluctuating for one or two seconds after the power is turned ? EEPROM (IC60) 3 An opening screen is not DVDM Assy displayed on the monitor Check the video signal path between DVD IC (DVDM Assy IC601) and Video circuit after DVD IC (The FL display lights. The video-out terminal (see the block diagram) (IC601) mechanism does not work.)
D
E
F
DV-270-S
5 6 7 8
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