Sony XR-1790 Service Manual
Fm/am cassette car stereo
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Also See for XR-1790:
- Operating instructions manual (16 pages) ,
- Service manual (36 pages)
Related Manuals for Sony XR-1790
Summary of Contents for Sony XR-1790
- Page 1 XR-1790 SERVICE MANUAL US Model Canadian Model E Model Model Name Using Similar Mechanism Tape Transport Mechanism Type MG-36SZ9-32 SPECIFICATIONS – Continued on next page – FM/AM CASSETTE CAR STEREO MICROFILM...
- Page 2 XR-1790 5-3. SCHEMATIC DIAGRAM – MAIN Section (1/2) – • See page 16 for Waveform. – 19 – – 20 –...
- Page 3 XR-1790 5-4. SCHEMATIC DIAGRAM – MAIN Section (2/2) – • See page 25 for IC Block Diagram. (Page 24) – 21 – – 22 –...
- Page 4 XR-1790 5-5. PRINTED WIRING BOARD – PANEL Section – (Page 17) • Semiconductor Location Ref. No. Location D900 C-10 5-6. SCHEMATIC DIAGRAM – PANEL Section – D901 D902 D903 IC900 • Waveform 2 IC900 #™ (OSC) (Page 22) 2.2 Vp-p 15 µ...
- Page 5 • IC Block Diagram – MAIN Board – IC450 LC75372E ROUT RVREF RVREF RVREF RVREF – – – RFIN TEST RVREF RVREF RFOUT – RROUT – SHIFT LATCH DECODER CONTROL REGISTER RVREF RVREF VREF RVREF LVREF – LVREF LVREF LROUT –...
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Page 6: Ic Pin Function Description
5-7. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC1 LC72322N-9400 (SYSTEM CONTROLLER) Pin No. Pin Name Function System clock input terminal (4.5 MHz) TEST2 Connected to ground Not used (fixed at “H”) AM-SD AM signal meter voltage detection input from the FM/AM tuner unit (TU100) “H” active FM-SD FM signal meter voltage detection input from the FM/AM tuner unit (TU100) “H”... - Page 7 Pin No. Pin Name Function 45 to 48 — Not used (open) Key matrix scan signal output terminal — Not used (open) LCD-CLK Serial data transfer clock signal output to the liquid crystal display driver (IC900) LCD-CE Chip enable signal output to the liquid crystal display driver (IC900) “H” active LCD-DATA Serial data output to the liquid crystal display driver (IC900) “H”...