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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.
Alignment and Adjustments
4. Alignment and Adjustments
4-1 Preadjustment
4-1-1 Factory Mode 4-1-3 When CRT Is Replaced
1. Do not attempt these adjustments in the Video Mode. 2. The Factory Mode adjustments are necessary when either the EEPROM (IC902) or the CRT is replaced. 3. Do not tamper with the �Adjustment� screen of the Factory Mode menu. This screen is intended only for factory use. 1. Make the following adjustments AFTER setting up after setting up purity and convergence : White Balance Sub-Brightness Vertical Center Vertical Size Horizontal Size Fail Safe (This adjustment must be the last step). 2. If the EEPROM or CRT is replaced, set PVA to 40 (factory mode) and set SC as follows. 14 inch : 18 21 inch : 24
4-1-2 When EEPROM (IC902) Is Replaced
1. When IC902 is replaced all adjustment data revert to initial values. It is necessary to re-program this data. 2. After IC902 is replaced, warm up the TV for 10 seconds.
4-2 Factory/Service Mode
4-2-1 Procedure for the �Adjustment� Mode
4. Selection sequences for the all system: 1. This mode uses the standard remote control. The Service Mode is activated by entering the following remote-control sequence : (1) DISPLAY�FACTORY. (2) STAND-BY� DISPLAY� MENU� MUTE �POWER ON. 2. The �SERVICE (FACTORY)� message will be displayed. The Service Mode has three components: ADJUST, OPTION and Reset. 3. Access the Adjustment Mode by pressing the �VOLUME� keys ( Up or Down). The adjustment parameters are listed in the accompanying table, and selected by pressing the CHANNEL keys (L ,M). DOWN or UP key: AGC>SCT>SBT>BLR>BLB>RG>GG>BG> VSL>VS>VA>HS>SC>CDL>STT>AKB> PDL>NDL>PSR>NSR>VOL>LCO>TXP> MVOL>FMWS>AGCS>OMD>SCL>PWL> AGN>PEK>ACL>FCO>SCBT>TSC 5. The VOLUME keys increase or decrease the adjustment values (stored in the non-volatile memory) when Adjustment Mode is cancelled. 6. Cancel the Adjustment Mode by re-pressing the �FACTORY� or �Power OFF� keys.
4-1
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