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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.
4. TROUBLE SHOOTING GUIDE
TROUBLE
SUCTION POWER IS WEAK
CAUSE
FILTER BAG(PAPER OR CLOTH) IS FULL WITH DUST CLOGGING OR TEAR IN HOSE
COUNTERMEASURE
CHANGE IT WITH NEW ONE OR REMOVE THE DUST REMOVE OBSCTACLE OR REPLACE THE HOSE
DEFECTIVE MOTOR
REPLACE THE MOTOR (SEE 5-2)
CLEANER DOES NOT WORK
BREAKING IN POWER CORD (AT BLADE TIP OR ROOT OF PLUG) DEFECTIVE SLIDE VOLUME LOCATED IN COVER BODY DEFECTIVE PCB ASSEMBLY BREAKING OF CONNECTIONS OR POOR CONTACTS IN CORD REEL ASSEMBLY DEFECTIVE MOTOR BREAKING OF CONNECTIONS IN COVER BODY ASSEMBLY DEFECTIVE SWITCH
REPLACE THE POWER CORD (SEE 5-3)
REPLACE IT (SEE 5-5) REPLACE IT (SEE 5-5) REPAIR (SEE 5-3)
REPLACE IT (SEE 5-2)
REPAIR (SEE 5-5) REPLACE IT (SEE 5-5) REPLACE IT (SEE 5-5)
MOTOR DOES NOT STOP EVEN IF SWITCH
DEFECTIVE PCB ASSEMBLY
TROUBLE
POWER CORD IS NOT WOUND UP
CAUSE
BROKEN REEL SPRING OF CORD REEL POWER CORD BROKE AWAY FROM THE BOBBIN
COUNTERMEASURE
REPLACE IT (SEE 5-3)
REPAIR (SEE 5-3)
CAUTION : BE CAREFUL WHEN BREAKING UP THE CORD REEL, THE REEL SPRING MAY SPRING OUT OF THE SPRING COVER. POWER CORD DOES NOT STOP AT AN ARBITRARY POSITION ABRASION OF THE ROLLER BRAKE OF CORD REEL LEVER SPRING BROKE AWAY FROM THE CORD REEL BRACKET REPLACE THE ROLLER BRAKE (SEE 5-3) REPAIR (SEE 5-3)
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