Sony ICF-2001D - Page 63

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See pages 36—58 for detailed voltages
4-2. SCHEMATIC DIAGRAM and waveforms.
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Note: e® Switch ° : adjustment for repair. no mark : AM W: WIDE ON U: USB ON *1 Be sure to see Servicing note on page 86 (b
e All capacitors are in uF unless otherwise noted. pF: uuF [Ret No ‘Saiich Position al @ Power voltages are 3.0 V and 4.5 V and fed to respective [ ] : AIR N: NARROW ONL: LSB/CW ON when replacing IC4 and/or IC6.
50 WV or less are not indicated except for electrolytics - circuit boards from regulated power supplies. Sine FM SNe SYNC ON *2 See page 86, since the capacities and the re
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and tantalums. : ; NE HIGH Voltages are de with respect to ground in no-input-signal << >> COMMON SF: SYNC Orr ; values are different by the type of IC4 and
e All resistors are in 2 and 1/5W or less unless otherwise $301 AM ATT Dx mode unless otherwise specified with a VOM (50 kQ/V). @ Waveforms are taken to ground in no-input-signal mode
specified. $302 MAIN POWER OFF Voltage variations may be noted due to normal produc- by using oscilloscope.
tion tolerances. Voltage variations may be noted due to normal produc-
$501 MANUAL TUNE E K 3
— 67 — MRP Loc tion tolerances. — 68 —
$502 POWER OFF