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Awesome manual. Complete diagrams of all board assemblies as well as how to get to each part of the t.v. down to the individual screws and their locations. Get it.
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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.
AV-20N8
REPLACEMENT OF CHIP COMPONENT
s CAUTIONS
1. 2. 3. 4. Avoid heating for more than 3 seconds. Do not rub the electrodes and the resist parts of the pattern. When removing a chip part, melt the solder adequately. Do not reuse a chip part after removing it.
s SOLDERING IRON
1. Use a high insulation soldering iron with a thin pointed end of it. 2. A 30W soldering iron is recommended for easily removing parts.
s REPLACEMENT STEPS 1. How to remove Chip parts
q Resistors, capacitors, etc. (1) As shown in the figure, while pushing the chip part with tweezers, alternately melt the solder at its each end.
2. How to install Chip parts
q Resistors, capacitors, etc. (1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the solder. Then heat and melt the solder at both ends of the chip part. (2) Shift the chip part with tweezers and remove it.
q Transistors, diodes, variable resistors, etc. (1) Apply extra solder to each lead.
q Transistors, diodes, variable resistors, etc. (1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First solder lead A as indicated in the figure.
SOLDER
SOLDER
A (2) As shown in the figure, while pushing the chip part with tweezers, alternately melt the solder at its each lead. Then, shift and remove the chip part. B C (4) Then solder leads B and C. A B C
Note : After removing the part, remove remaining solder from the pattern.
No. 56032
9
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