Sony HCD-EH15 - SECTION 7 DIAGRAMS; Printed Wiring Board Notes; Schematic Diagram Notes

HCD-EH15
HCD-EH15
1313
• Circuit Board Location
MAIN board
PANEL board
CD board
PT-AC board
VOLTAGE-SEL board
(Chilean and Peruvian, Singapore models)
• Waveforms
– CD Board –

IC101 JB (RFi)
(CD play mode)
200 mV/DIV, 500 ns/DIV
0.5 to 1.3 Vp-p

IC101 XG (XO)
(CD play mode)
1 V/DIV, 20 ns/DIV
59.1 ns
14.6 Ms
3.3 Vp-p
RE
Q507 (Collector)
(Tape REC mode)
5 V/DIV, 10 Ms/DIV
9.8 Vp-p
RB
IC801 X (XOUT)
1 V/DIV, 10 μs/DIV
13.4 μs
1.2 Vp-p
RT
IC861 RG (XOUT)
2 V/DIV, 100 ns/DIV
230 ns
5 Vp-p
XB
IC701 RG (X3)
2 V/DIV, 20 μs/DIV
30.8 μs
3 Vp-p
XT
IC701 PT (X1)
2 V/DIV, 100 ns/DIV
182 ns
3.4 Vp-p
– MAIN Board – – PANEL Board –
SECTION 7
DIAGRAMS
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 1/4 W or less unless otherwise
specifi ed.
•
f
: internal component.
• C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark : CD PLAY
– Other Section –
no mark : FM
[ ] : AM
( ) : CD PLAY
< > : TAPE PLAY
{ } : REC
• Voltages are taken with 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.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
f : AM
J : CD PLAY
E : TAPE PLAY
: REC
h : AUDIO IN
• Abbreviation
AR : Argentina model
AUS : Australian model
CND : Canadian model
E51 : Chilean and Peruvian model
KR : Korean model
MX : Mexican model
RU : Russian model
SP : Singapore model
TW : Taiwan model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• W : indicates side identifi ed with part number.
•
f
: internal component.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
CE
Q
Note:
The components identi-
fi ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.