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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.
TEST MODE
Test Mode has a �Manufacture Mode� for checking the movement. It decides to become �Manufacture Mode� if the TEST pin is a �L� level when the MCU starts from reset. <Triggering method of the Test Mode> 1) Short the Test-Pin and GND-Pin. TAKE NOTE: Refer to Page 6 �WIRING � 1 (MAIN)� Map Location (G11) for the actual position of the shorting point.
2) Turn on the power supply of the set.
� Manufacture Mode
This Mode can check the LCD display, Key, Switch and various IC. All the LCD Display is turned on for five seconds from reset start. The EL Backlight is tuned on until the Key is pressed from reset start. After that, Dot matrix: Show �Manufacture Mode� Pictograph: Repeat Mark .... When USB cable is connected: ON When USB cable is disconnected: OFF POP Mark ........ When MMC is inserted: ON When MMC is pulled out: OFF ROCK Mark .... When HOLD switch is ON: ON When HOLD switch is OFF: OFF Others .............. OFF �Battery Mark indicates voltage value�
� Display and Movement
MENU can be chosen when the MENU/LIGHT key is pressed. Following is the �Turn�: 1) KEY CHECK -----> 2) USB CHECK -----> 3) FLASH CHECK -----> 4) MMC CHECK -----> 5) DSP CHECK 1) KEY CHECK Display indicates the name of Key while the Key is kept pressing. MENU/LIGHT Key is checked by Menu change. 2) USB CHECK When the set is connected to the PC, if it recognize the set, check is OK. Display indicates �CONNECT� and when USB cable is connected all keys are useless. Please check USB by menu of USB CHECK only. 3) FLASH CHECK If the flash memory can be formatted, check is OK. 4) MMC CHECK If the MMC can be formatted, check is OK. If �VOLUME +� Key (Y) is pressed when MMC was pulled out, MMC cannot be formatted. 5) DSP CHECK If MCU can communicate with DSP, check is OK.
� 20 �
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