Sony HCD-HPR90 - Receiver Component For Mini Hi-fi Systems Service Manual page 19

Note For Printed Wiring Boards and Schematic Diagrams
Note on Printed Wiring Board:
X : parts extracted from the component side.
Y : parts extracted from the conductor side.
f : internal component.
: 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
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
Indication of transistor
C
Q These are omitted.
B E
Q
B C E
These are omitted.
HCD-HPR90/HPR99XM
Note on Schematic Diagram:
All capacitors are in F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
All resistors are in and 1 / W or less unless otherwise
4
specified.
f : internal component.
2 : nonflammable resistor.
C : panel designation.
The components identified by Les composants identifiés par une
mark 0 or dotted line with marque 0 sont critiques pour la
mark 0 are critical for safety. sécurité.
Replace only with part number Ne les remplacer que par une pièce
specified. portant le numéro spécifié.
A : B+ Line.
B : B– Line.
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark :CD PLAY
– XM Board –
no mark : XM
– Other Boards –
no mark : TUNER (FM/AM)
( ) : CD PLAY
: XM
: Impossible to measure
Voltages are taken with a VOM (Input impedance 10 M ).
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.
F
: TUNER (FM/AM)
J
: CD PLAY
: XM
f : AUDIO IN
Abbreviation
AR : Argentina model
AUS : Australian model
CND : Canadian model
E51 : Chilean and Peruvian models
MX : Mexican model
SP : Singapore model
Circuit Boards Location Circuit Boards Location
AMP board
FL board
PANEL board
HP A-IN board
19 19
HCD-HPR90/HPR99XM
POWER board
TUNER
MAIN board
SP board
XM REG board
(HPR99XM)
XM board
(HPR99XM)
CD board
Ver. 1.1