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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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GOOD SERVICE MANUAL.I ALWAYS BUY THERE IF I FIND WHAT I AM LOKING
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3.2 OVERALL WIRING DIAGRAM
A
K SENSOR-K ASSY
(BZW1519)
J
SENSOR-J ASSY (BZW1518)
G LED-G ASSY (BZW1515)
B
By changing jumper-pin settings on the SENSOR-I, -J, and -K Assy's, you can use the SENSOR-I, -J, and -K Assy's one in place of another. Refer to "7.1.4 OPERATION CHECKS USING EXCHANGEABLE ASSY'S"
CN1
CN4
÷ When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". ÷ The > mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. ÷ : The power supply is shown with the marked box.
C
CN1 CN4
<BACK SIDE VIEW>
CN1
CN4
D
E
CN3
(BZW1513) (BZW1514)
LED-E LED-F ASSY
E F
CN2
F
CN6 CN5
D LED-D ASSY (BZW1512)
CN4 CN1
C LED-C ASSY (BZW1511)
By changing jumper-pin settings on the LED-B, and -C Assy's, you can use the LED-B Assy as the LED-C Assy, and vice versa. Refer to "7.1.4 OPERATION CHECKS USING EXCHANGEABLE ASSY'S"
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1 2
PDK-50HW3
3 4
CN1 CN4
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