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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.
[ CHECKING TERMINALS AND COMPONENTS ]
C5 11. Chip capacitor (7103 7443) LL1 5. Coil (for alarm) (7020 0511) R 12. Chip resistor C4 9. Tantalum capacitor (2895 1358) C1 10. Chip capacitor (7103 4446)
VDD VBAT1 VC VCC VDD S4 AC VDD
Tr 3. Transistor (7110 1151)
VBAT1
(2797 3129)
L L VDD BD RT2 RT1 S4
L
ELD
2. P.C.B. with components (7240 9039)
VDD
VCPE VBAT1 VBAT1 VBAT1 CIL ELD VSS1 VDD VBAT1 RT1 CIL S4 VBAT1 VDD ELD VCPE CIL ELD
S3
S1
S1 VSS2
VSS2
VDD
CIL
S3
VDD
VSS1 N1
N2 N3 VDD VDD VDD
CG3
CG2
CG1 XT VDD
INV 7. Inverter IC (7100 7917) LL2 6. Coil (for EL) (7020 5413) 24. Cushion 6 (7211 0064)
XT
XT
XT
Di 4. Diode (7101 5609)
XTB
C2 10. Chip capacitor (7103 4446)
Xtal 8. Quartz oscillator (7110 0979)
C3 10. Chip capacitor (7103 4446)
Top view of P.C.B. ass'y
Bottom view of P.C.B. ass'y
[SPECIFICATIONS]
Item Battery Battery life Alarm system CR1216 Approx. 2 years Piezo plate on Back cover Detail Accuracy Accuracy setting system Accuracy checking Accuracy setting Item Detail ±30sec./month Pad selection (CG1~CG3) See page 6 Unadjustable
Current consumption 1.20µA maximum
[N1~N3, CG1~CG3 PADS]
Never solder or desolder these pads, because they have been selected best in the production line. A new P.C.B. with components as a spare parts will be supplied with factory adjustment of these pads.
�3�
VBAT1 RT2
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