Sony ST-SP55 Посібник з експлуатації - Сторінка 2

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THIS NOTE IS COMMON FOR PRINTED WIRING

BOARDS AND SCHEMATIC DIAGRAMS.

(In addition to this, the necessary note is printed

in each block.)

For schematic diagrams.

Note:

• 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

specified.

•

: internal component.

• C : panel designation.

Note:

The components identified by mark 0 or

dotted line with mark 0 are critical for

safety.

Replace only with part number specified.

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• no mark : FM

∗

: Can not be measured.

• Voltages are taken with a VOM (Input impedance 10 MΩ).

Voltage variations may be noted due to normal produc-

tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-

tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

: FM

: CD

: TAPE

: REC (TAPE/MD)

: MD

• Abbreviation

: Malaysia model.

: Singapore model.

: Hong Kong model.

: Korea model.

AED : North European model.

For printed wiring boards.

Note:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

•

: Through hole.

• b : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

• Indication of transistor

These are omitted

SECTION 3

DIAGRAMS

W or less unless otherwise

05/28/2012

• WAVEFORMS

– MAIN BOARD –

IC701 qa XCOUT

2.7Vp-p

30.5µsec

IC701 qd XOUT

4.6Vp-p

100nsec

3-1. CIRCUIT BOARDS LOCATION

tuner unit (FM/AM)

LED board

PANEL board

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PIN JACK board

MAIN board