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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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5 STARS for FAST DELIVERY, BEST PRICES and QUALITY PRODUCT. Item was exactly as described with superb resolution. Will definitely source all my future requirements from this website. Thanks a lot owner-manual.com!
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OEM manual provided all schematics, board layouts and component specs necessary to facilitate unit maintenance. All pages were clear and readable.
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Good condition and quality. Hard to find anywhere in Internet, only on this site.
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Exactly what I needed to be able to bring the amp back to life... will come back to this site the next time I need schematics.
D-NF420/NF421
Ver. 1.3
Pin No. 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182, 183 184 185, 186 187 188 189, 190 191 192 193 194 195 196 197 198 199, 200 201 202 203 204 207
Pin Name FILO FILI PCO VSS12 DVDD3 VDIODSP SFDR SRDR TFDR TRDR FFDR FRDR MDP MDS C176 VDIOEM0 DVDD4 VSS14 PC3/XSCS0 PC2/SI0 PC1/SO0 PC0/SCK0 VSS15 VDIO5 PG7 PG6, PG5 PG4 PG3, PG2 PG1 PG0
DVDD5, DVDD6
I/O O I O O O O O O O O O O I O O I O O O I I I I I I I O I Filter output terminal for master PLL Filter input terminal for master PLL
Description
Charge pump output terminal for master PLL Ground terminal Power supply terminal (+1.3V) Power supply terminal (+2V) Sled servo drive signal (+) output to the motor/coil drive Sled servo drive signal (-) output to the motor/coil drive Tracking servo drive signal (+) output to the motor/coil drive Tracking servo drive signal (-) output to the motor/coil drive Focus servo drive signal (+) output to the motor/coil drive Focus servo drive signal (-) output to the motor/coil drive Spindle motor servo drive signal output to the motor/coil drive Not used 176.4 kHz clock signal output to the motor/coil drive Power supply terminal (+2V) Power supply terminal (+1.3V) Ground terminal Command latch signal output to the power control Serial data input from the FM/AM/TV tuner and EEPROM Serial data output to the power control and EEPROM Serial clock signal output to the power control and EEPROM Ground terminal Power supply terminal (+2V) Cold start flag input from the power control Not used Reset signal output to the liquid crystal display Not used Standby signal output to the optical pick-up block RF gain-up signal output for CD-RW to the optical pick-up block Power supply terminal (+1.3V) Ground terminal Power supply terminal (+2V) Ground terminal CD lid open/close switch input terminal Battery voltage monitor input terminal Wake up signal input from the power control Remote commander key input terminal (NF421: Russian, Singapore, Malaysia and Thai models only) Not used Top panel key input terminal (A/D input) DCIN voltage monitor input terminal Wake up signal input terminal Wake up signal output to the power control System reset signal input from the power control Power supply terminal (+1.2V) Ground terminal "L": close, "H": open Charge voltage monitor input from the power control
VSS18 AVDAD AVSAD AN7 AN6 AN5 AN4 AN3 AN2, AN1 AN0 WAKE XADEVENT XRST VSS19
205, 206 DVDBK0, DVDBK1
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