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There are currently no product reviews.
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Great PDF easy to read good info needed for replacment of belts and assembly and specs.
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complete and unabridged very good quality
easy to download.
recieved in two days.
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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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5.2 DIAGNOSIS OF THE MAIN ASSY
Power ON 1 Failure in the periphery of CN2301 Does a desired screen appear when selected a tuner? Yes No (Poor contact with the TURB Assy.) 2 Failure in the periphery of CN4501 (Power supply is not supplied from the POWER SUPPLY Assy.) 3 Failure in the periphery of IC4511, IC4521, IC4531, IC4541, IC4552, IC4561, IC4562 and IC4571 (Power supply is not supplied to each IC.) 1 Failure in the periphery of CN2301 (Poor contact with the TURB Assy.) 2 Failure in the periphery of IC3101 (Failure in the periphery of AUDIO ADC for input audio.) 3 Failure in the periphery of IC3201 (Failure in the periphery of AUDIO DAC for output audio.)
B A
No
Does a desired audio output it? Yes
No
No
Video recording and playback by HDD
Can the video recording and playback of HDD? Yes Video recording and playback by DVD
No
1 Failure in the periphery of CN5604 (Poor contact with the HDD.) 2 To the HDD check mode
No
C
Does the tray open?
No
1 Failure in the periphery of CN601 (Poor contact with the FRONT Assy.) 2 Failure in the periphery of IC501 (Failure in the periphery of the Driver IC.)
Yes Insert a disc and close the tray, then playback it
Do recognize a disc?
No
1 Failure in the periphery of CN101 (Poor contact with the Pickup Assy.) 2 Failure in the periphery of CN501 (Poor contact with the SPDL.) 3 Failure in the periphery of CN502 (Poor contact with the STEPPER.) 1 Failure in the periphery of CN2301 (Poor contact with the TURB Assy.) 2 Failure in the periphery of IC3101 (Failure in the periphery of AUDIO ADC for input audio.) 3 Failure in the periphery of IC3201 (Failure in the periphery of AUDIO DAC for output audio.)
No
D
Yes
Do play back desired video and audio? Yes DVD recording
No
No
E
Can record desired video and audio? Yes End
No
Failure in the periphery of CN101 (Poor contact with the Pickup Assy.)
No
Failure in the periphery of IC1001 (There is possibility of failure of the EMMA2RFE chip.)
F
DVR-650H-K
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