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 ;
Great service. Fast response. High quality scan. Good price.
Thank you very much!!!
Oleg S.
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Well-scanned, complete manual. Contains the information needed for repair and maintenance.
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It's great to be able to obtain a precious technical information for a real old equipment. The one I got helps me a lot in the area of wiring diagram to repair my antique. PDF gave me clear enough information to find out thr details. Thanks for giving me the oppotunity to be able to access to almost vanished informations.
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Another excellent aquisition. Fine detailed manual. Thanks
 ;
Good quality for the scan, complete, but as usual for Tascam, not so comprehensive !
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A
A
Turn the main power on with the cable to the CN2401 or CN2301 disconnected. Check if 5 V DC is output from Pin 8 of CN2301. YES NO Failure in the CN2301 or LED PWB (failure in the M5V line at Pin 8 of the CN2401)
Turn the main power on with the cable to the CN2302 or CN9010 disconnected. Check if 5 V DC is output from Pin 20 of CN9010. YES NO Is 5 V DC output from Pin 5 of IC9502? NO Failure in the MAIN PWB (failure in the IC9502) Failure in the CN2302 or COMM SLOT IF PWB (failure in the M5V line at Pin 20 of the CN2302)
B
YES Turn the main power on with the COMM SLOT Assy disconnected from CN2303. Check if 3.3 V DC is output from Pin 118 of CN2303.
C
YES NO
Failure in the COMM SLOT Assy (failure in the M3.3V line at Pin 118 of the CN2303)
Turn the main power on with the cable to the CN2302 or CN9010 disconnected. Check if 3.3 V DC is output from Pin 16 of CN9010. YES NO Turn the main power on with the cable to the CN4004 or CN5301 disconnected. Check if 3.3 V DC is output from Pin 50 of CN5301. YES NO Failure in the CN4004 or COMM SLOT IF PWB (failure in the M3.3V line at Pin 1 of the CN4004) Failure in the CN2302 or COMM SLOT IF PWB (failure in the M3.3V line at Pin 16 of the CN2302)
D
Turn the main power on with the cable to the CN2201 or CN9011 disconnected. Check if 3.3 V DC is output from Pin 1 of CN9011. YES NO Is 3.3 V DC output from Pin 4 of IC9503? YES Is 0 V DC output from Pin 14 of CN8502 (AD2)? NO (4.7V) Failure in the AD2 connector or MAIN PWB (failure in IC9501 or X9501) Note: If IC9501 is in failure, replace the whole board. NO Failure in the MAIN PWB (failure in the IC9503)
E
Failure in the CN2201 or KEY PWB (failure in the M3.3V line at Pin 1 of the CN9011)
YES Failure in the MAIN PWB (failure in IC9501 or X9501) Note: If IC9501 is in failure, replace the whole board.
F
PDP-425CMX
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