7-2. Circuit Board Location - Sony HCD-VX550 Service Manual

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Service manual (20 pages)

Table Of Contents

Table of Contents

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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.)

Note on Printed Wiring Board:

• X : parts extracted from the component side.

•

: parts mounted on the conductor side.

• b : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:

Pattern face side:

Parts on the pattern face side seen from

(Side B)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Side A)

the parts face are indicated.

• Indication of transistor.

These are omitted.

C E

These are omitted.

T E

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w w w

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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

W or less unless otherwise

specified.

•

: internal component.

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

The components identified by

mark ! or dotted line with mark

! are critical for safety.

Replace only with part number

specified.

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• 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.

: TUNER (FM/AM)

: PLAYBACK (DECK A)

: PLAYBACK (DECK B)

: RECORD

L : CD PLAY (VIDEO)

: CD PLAY (AUDIO)

c : DIGITAL OUT

: MIC INPUT

a o

u 1 6 3

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