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There are currently no product reviews.
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perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
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This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
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IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
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Very usefull, good quality drawings !
Muito útil encontrei todas as informações necessárias.
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Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
IC DESCRIPTION
IC, MN101C439AL Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
Pin Name
COM03 COM02 COM01 COM00 VLC3 VLC2 VLC1 VDD OSC2 OSC1 VSS XI XO MMOD VREFK-FUNC K-P/S ACIN VDIN K-RMC SWDO SWEASS SWR/H VREF+ MDATA STAT MCLK MLD SUBQ SQCK BEEP RST NRST SWIL PC CDRW NC BLKCK RSENSOR EASS SP-2/3
I/O
O O O O � � � � O O � I O I � I I I I I I I I � O I O O O O O I O I O O � I I � � LCD common output. LCD common output. LCD common output. LCD common output. LCD drive voltage setting terminal. LCD drive voltage setting terminal. LCD drive voltage setting terminal. LCD power.
Description
Micon main clock oscillator output. (Not used) Micon main clock oscillator output. GND. Sub-clock oscillator. (Connected to GND) Sub-clock oscillator. (Not used) Processor mode unused. (Connected to GND) Connected to GND. "FUNCTION" key input. Refer to A/D TABLE-1. "PLAY" and "STOP" key input. Refer to A/D TABLE-2. AC adaptor detection. Main clock (8 MHz). Wired remote control input. Refer to A/D TABLE-2. Digital out "ON/OFF" input. ON at "L". (Connected to GND) EASS mode selection input. Refer to A/D TABLE-1. Resume/Hold switch input. Connected to VDD. DSP MDATA output. DSP STAT input. DSP MCLK output. DSP MLD output. Power down output for H/A. Selection output for EASS gain control. EASS at "L". Buzzer output for headphone. Micro computer reset input. DSP reset output. Limited switch input. Power off output for CD server driver. Power off at "L". CD RW play gain level selection output. Gain set at "H". Not connected. DSP BLKCK input. Wireless remote control sensor signal input. (Not used) Not used. Not used.
� 13 �
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