The service manual is really great - thanks to it I was able to install the laser unit and thus "save" my CD-player, which seemed to be impossible before I had the manual.
Complete service manual in very good scanning quality with all schematic and PWB graphics as well as assembly & maintenance instructions. A slight drawback is that the rastering of the PWB graphics sometimes makes it a bit difficult to follow fine traces, but no showstopper.
Text excerpt from page 9 (click to view)
DPX-MP7050
MICROCOMPUTER�S TERMINAL DESCRIPTION
Pin No. 43 44 45 46 47 48 49-56 57 58 59 60-73 74 75 76 77-90 91 92 93 Pin Name PN_REQ GS03 NC FL_CLK NC SEL_E2P NC Vss W5/W6_SEL Vcc NC Vcc NC Vss NC Vcc NC Vss O I I O O O O O O O O I I/O O O I I O I O Application Panel communication request output FL dot section data output terminal 3 Not used. FL dot section clock input terminal Not used. E2PROM write request Not used. GND electrical potential DPX-MP7050/DPX-630M selection 5V electrical potential Not used. 5V electrical potential Not used. GND electrical potential Not used. 5V electrical potential Not used. GND electrical potential Not used. B input A input Key scan output 0 Key scan output 1 Key scan output 2 Key scan output 3 GND electrical potential O Key scan output 4 5V electrical potential O O O I I I I Not used. DC/DC FL terminal switching terminal Power supply control terminal Key return signal input 0 Key return signal input 1 Key return signal input 2 Key return signal input 3 GND electrical potential I I Key return signal input 4 Connect to GND electrical potential 5V electrical potential I Connect to GND electrical potential Dependent on PN PON H : DPX-630M, L : DPX-MP7050 H : Write Processing Operation Description
