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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.
TUNER SECTION
Cautions during repair
0 dB = 1 µV
FM Auto Scan/Stop Level Adjustment Setting : FM button : FM
FM RF signal generator antenna terminal 0.01 µF set
When the tuner unit is defective, replace it by a new one because its internal block is difficult to repair.
TEST MODE
This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and AM Auto Scan/Stop Level adjustments can be performed easier than it in ordinary procedure. <Set the Test Mode> 1. Supply 14.4 V DC to ACC and Back-up. 2. Push the PWR button to turn the tuner off. The tuner enters the time display mode. 3. Turn the ACC power OFF. 4. Turn the ACC power ON by pushing the ^ and 1 keys simultaneously for longer than 4 seconds. 5. Push the 4 key twice within 1 second after releasing the ^ and 1 keys. All indications on the display will light up. 6. Push the PWR button once. � � will be displayed and the tuner enters the Test mode. 7. Push the 1 key once. The tuner enters the Tuner SD ADJ mode. <Release the Test Mode> 1. Push the PWR button once while the tuner is in the Tuner SD ADJ mode. The Tuner SD ADJ mode will be released and the tuner will display � � again. 2. Push the PWR button once while the tuner is displaying � �. The Test mode will be released. Note on Adjustment The adjustments of tuner section, should be performed according to the following sequence. 1. FM Auto Scan/Stop Level Adjustment 2. FM Noise Focus Adjustment 3. FM Stereo Separation Adjustment 4. AM Auto Scan/Stop Level Adjustment
Carrier frequency : 97.9 MHz (H592WG) : 98.0 MHz (H593WG) Output level : 24 dB (15.8 µV) Mode : mono Modulation : 400 Hz, 22.5 kHz deviation (30%)
Procedure : 1. Set to the test mode (Tuner SD ADJ mode). 2. Push the FM button and set to FM. 3. Push the preset 3 button. Display
*1
RPTch
4. Turn the volume RV2 on TU1 counterclockwise, and then adjust the volume by turning it clockwise little by little until the � � indication begins to flash on the display. Display
*1
RPTch
*1 : XR-H593WG has the �98.0� displayed. Adjustment Location : See page 17.
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