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I am a vintage hifi collector. No way to fix that device without the appropriate service manual...thanks to your site I got it and every thing is easier now. I got the manual right after ordering: fast cheap accurate ... thank you
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Wonderful job clear. Qick fantastic. These people are really good. If even a problem arise they are wonderful assisting you. These scheme is so net despite this is a very old TV. Thank you for everything!!!!!!!!
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Detailed schematic diagram, manual for professionals
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Good service manual,exploded view,adjusment and test point locations,head alignment,mechanical checks and adjusments,all perfect.
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Block diagram,play rec block diagram,adjusments, it's a very good well done repair manual.
IC, RS21501
Pin No. 1 2 3-7 8, 9 10 11 12 13, 14 15 16 17 18 19 20 21, 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Pin Name DVDD DVCC D4-D0 DRXIF1, DRXIF0 DCLK/2 CMD2 DGND CMD1, CMD0 T/R
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I/O � � I/O O O I � I I I I I � � � � � I � I � � I I � O � I/O I/O � I � � � I I O � � � O Bias. Voltage detection input. Analog ground. Power supply for digital block. Power supply for analog block.
Description
Digital input/output terminals D4 to D0. Received data output. 9.6 MHz output. Command input 2. Digital ground. Command input 1, 0. Send/reception selection. Standby. Sleep. TCXO 19.2 MHz input. NC. Analog ground. Power supply for analog block. Analog ground. Power supply for analog block. Reception's second IF signal input (+). Analog ground. Reception's second IF signal input (-). Gain adjustment.
STBY
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SLEEP REF IN AFC OUT AGND AVCC AGND AVCC RX2NDP AGND RX2NDN LNAB LNA RBIAS VSENSE AGND IFRX AGND RFI/O+ RFI/OAVCC TXIF_IN AGND OSC_OUT AGND TANK VCO_IN PD_OUT AVCC AGND AVCC TXIF_OUT
Reception's second IF signal output. (to 10.75 MHz band-pass filter). Analog ground. First IF signal input/output. (+). First IF signal input/output. (-). Power supply for analog block. Transmitter's second IF signal input. Analog ground. NC. (No connection). Analog ground. Tank circuit from second station. Input from second station. Phase comparator output from 2nd station. Power supply for analog block. Analog ground. Power supply for analog block. Transmitter's second IF signal output. (to 10.75 MHz band pass filter).
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