Service manual

HCD-NEZ30
1919
HCD-NEZ30
• Circuit Boards Location
HEAD PHONE board
PANEL board
CD board
SHIELD board
MAIN board
TUNER UNIT
DC board
CONNECT board
AC board
(EXCEPT UK, East European)
• Note for Printed Wiring Boards and Schematic Diagrams • Indication of transistor
C
B
These are omitted.
E
Q
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.
• 5 : fusible resistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions. – CD Board – no mark : CD PLAY
– Other Section – no mark : TUNER
(): CD PLAY
〈〈 〉〉 : TAPE PLAY
{ }: REC
• 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.
F : TUNER
J : CD PLAY
E : TAPE PLAY
j : REC f : AUX IN
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.
B
These are omitted.
CE
Q
B
These are omitted.
CE
Q
Note: The components identi- fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part number specified.
Note: Les composants identifiés par une marque 0 sont critiques
pour la sécurité. Ne les remplacer que par une pièce portant le numéro spécifié.
Ver. 1.5
• Abbreviation
AR : Argentina model CND : Canadian model E51 : Chilean and Peruvian models
EE : East European model MX : Mexican model