Diagrams - Sony HCD-DX155 Service Manual

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. (p: pF)
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.
• f : internal component.
• C : panel designation.
Note:
Note:
Les composants identifiés
The components identi-
fied by mark 0 or dot- par une marque 0 sont cri-
ted line with mark 0 are tiques pour la sécurité.
critical for safety. Ne les remplacer que par une
piéce por tant le numéro
Replace only with part
number specified. spécifié.
New part of EEP ROM (IC1103) on the MAIN board
cannot be used. Therefore, if the mounted MAIN board
(A-1151-985-A, etc.) is replaced, exchange new EEP
ROM (IC1103) with that used before the replacement.
• A : B+ Line.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
• Voltages and waveforms are dc with respect to ground in
service mode.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
no mark : DVD STOP
: Impossible to measure
*
• Voltages are taken with VOM (Input impedance 10 MΩ).
• Circled numbers refer to waveforms.
• Signal path.
F : AUDIO
J
: CD PLAY
c
: DVD PLAY
I : SACD PLAY
d : TUNER
L
: VIDEO
E
: Y
a
: CHROMA
r : COMPONENT VIDEO
q : R, G, B
f
: AUDIO IN
• Abbreviation
AUS : Australian model
CND : Canadian model
E3 : 240V AC area in E model
MX : Mexican model
SP : Singapore model
HCD-DX155/DX255
SECTION 6

DIAGRAMS

For Printed Wiring Boards.
Note:
• X : parts extracted from the component side.
• a : Through hole.
• : 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 A) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(SIDE B) the parts face are indicated.
• Indication of transistor.
C
Q
B C E
B E
These are omitted
• Circuit Boards Location
FL board
These are omitted.
SW board
29 29
TUNER UNIT
I/O board
SPEAKER board
HEATSINK (B) board
LED board
POWER board
JACK board
HCD-DX155/DX255
MAIN board
HEATSINK (A) board