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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.
1-7. Replacing the Boards
1-7. Replacing the Boards
n Turn off the power of both power supply units and unplug the power plugs from the outlets before starting the replacement.
1-7-2. Connector Mount
n Be sure to attach IFB shield parts at the top and bottom of a connector panel because they prevent spurious radiation. The connector panel installing procedure depends on the slot number. Use one of the following three types according to the slot number. [Type 1] Slot No.1 [Type 2] Slot No.2,3 [Type 3] Slot No.4 The installation procedures of the three types are explained below. [Type 1] 1. Remove the four screws securing the IFB shield (S1), the IFB shield and the connector panel. 2. Using the four screws that were removed,secure a new connector panel, the IFB shield (S1) and the IFB shield.
1-7-1. The Plug-in Boards
1. Remove the front panel. (Refer to Section 1-2.) 2. Remove the four screws, then remove the BKPF cover.
PSW 3x6
PSW 3x6
BKPF cover
Connector panel PWH 3x6
3. Turn the board lever in the direction of the arrow 2, then pull out the board toward you. 4. Turn the board lever of a new board in the direction of the arrow 1, insert the board along the board guide rail, then push it until it connects to the MB-812 board securely.
IFB shield PWH 3x6 PWH 3x6 IFB shield (S1)
2 1 1 2
[Type 2] 1. Remove the four screws securing the two IFB shields and the connector panel. 2. Using the four screws that were removed, secure a new connector panel and the two IFB shields.
Connector panel PWH 3x6
Board lever
Board lever
1 2
1 2
1 2
Install Remove
IFB shield PWH 3x6
5. Install the BKPF cover and front panel.
PFV-HD50A MM
PWH 3x6
1-5(E)
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