HCD-U1BT - Sony Audio Service Manual (repair manual). Page 2

2

Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  (p: pF)

50 WV or less are not indicated except for electrolytics and
tantalums.

• All resistors are in Ω  and 

1

/

4

 

W or less unless otherwise

specified.

•         f

: internal component.

• 2 : nonflammable resistor.
• C : panel designation.

• A : B+ Line.
• Voltages are taken with a VOM (Input impedance 10 MΩ).

Voltage variations may be noted due to normal production
tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production
tolerances.
No mark: CD PLAY

• Circled numbers refer to waveforms.

• Signal path.

F

: AUDIO

J

: CD

d

: TUNER

f

: USB

N

: BLUETOOTH

• Abbreviation

CND

: Canadian model

KR

: Korean model

Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•         f

: internal component.

•

: Pattern from the side which enables seeing.

B

These are omitted.

C

E

Q

C

B

These are omitted.

E

Q

• Indication of transistor.

Caution:
Parts face side:     Parts on the parts face side seen from
(Side A)                 the parts face are indicated.
Pattern face side:  Parts on the pattern face side seen from
(Side B)                 the pattern face are indicated.

The components identi-
fied by mark 0  or dot-
ted line with mark 0 are
critical for safety.
Replace only with part
number specified.

Les composants identifiés
par une marque 0 sont cri-
tiques pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.