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- SECTION l SERVICE MANUAL
- SECTION 2 PARTS LIST
- SECTION 3 SCHEMATIC DIAGRAM
- SPECIFICATIONS
- DISMANTLING OF UNIT
- CONTROLS
- PRINCIPAL PARTS LOCATION
- VOLTAGE AND CYCLE CONVERSION
- VOLTAGE CONVERSION
- CYCLE CONVERSION
- SYSCON BLOCK DIAGRAM
- FUNCTION OF MICROCOMPUTER TERMINALS
- IC 1 (MICROCOMPUTER FOR SYSCON)
- IC 2 (MICROCOMPUTER FOR RPSS)
- EXPLANATION OF AU TO SYSTEM OPERATION
- BLANK SEARCH SYSTEM (OPERATED BY IC 1 PROGRAM)
- INTRO SCAN SYSTEM (OPERATED BY IC 1 PROGRAM)
- RECORDING CANCEL SYSTEM (OPERATED BY IC 1 PROGRAM)
- RANDOM PROGRAM SEARCH SYSTEM (RPSS)
- MECHANICAL ADJUSTMENT
- FLYWHEEL LOOSE PLAY ADJUSTMENT
- PLUNGER POSITION ADJUSTMENT
- PINCH ROLLER PRESSURE MEASUREMENT
- WINDING TORQUE MEASUREMENT IN EACH MODE
- TAPE SPEED ADJUSTMENT
- HEAD ADJUSTMENT
- ERASE HEAD HEIGHT ADJUSTMENT
- ERASE HEAD INSTALLATION ANGLE ADJUSTMENT
- TAPE GUIDE HEIGHT ADJUSTMENT
- REC/PB HEAD HEIGHT ADJUSTMENT
- REC/PB HEAD AZIMUTH ADJUSTMENT
- ELECTRICAL ADJUSTMENT
- QUICK REVERSE SENSITIVITY ADJUSTMENT
- DC RESISTANCE OF VARIOUS COILS
- CLASSIFICATION OF VARIOUS P.C BOARDS
- P.C BOARD TITLES AND IDENTIFICATION NUMBERS
- COMPOSITION OF VARIOUS P.C BOARDS
- For Basie Adjustments, Measuring Methods, and Operating Principles, Refer to GENERAL TECHNICAL MANUAL
- RECOMMENDED SPARE PARTS
- HEAD BASE BLOCK
- REEL TABLE BLOCK
- MECHA FRAME BLOCK
- PRE AMP P.C BOARD BLOCK
- SYS. CON. P.C BOARD BLOCK
- POWER SUPPLY P.C BOARD BLOCK
- DRIVE P.C BOARD BLOCK
- REC CANCEL P.C BOARD BLOCK
- KEY BOARD P.C BOARD BLOCK
- LD P.C BOARD BLOCK
- VR P.C BOARD BLOCK
- ASSEMBLY BLOCK
- FINAL ASSEMBLY BLOCK
- INDEX
- Resistor and Capacitor which are not Listed in this Parts List, Please Refer to COMMON LIST FOR SERVICE PARTS
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.
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