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The service manual is as described and received the link to the download sooner than expected. Great service, quality product. This site is a big help in the electronics repair business.
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Il service manual molto accurato. Rapidi nella risposta
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Quick site processing. A complete and very useful manual with all details. Thank you!
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Quick service response. A useful and very rare service manual with all details. I recomend this service.
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This is a fantastically good and properly scanned copy of the original manual. All pages are of the same scale and they overlap each other. It means that you can print the manual and easily make it as a convenient paper manual.
The content of the manual is fantastic. Alignment descriptions, PCB layouts and elementary diagrams are explicit and precise. I immediately found what I was looking for. Thanks to this manual and Owner-Manuals.com my amplifier is alive again. Many thanx indded!
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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