Schematic Diagram - Sony TCM-20DV Service Manual

6-3. SCHEMATIC DIAGRAM •
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See page 15 for IC Block Diagram.
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Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• C : panel designation.
• U : B+ Line.
• H : adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 3 V and fed with regulated dc power
supply from external power voltage jack.
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TCM-20DV/21DV/22DV/23DV
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : PLAY
< > : RECORD
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
E
: PLAY
a
: RECORD