Sony HCD-EC69 Service Manual page 23

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
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.
•
• : 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
(Conductor Side) from 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.
• Abbreviation
AR : Argentina model
E2 : 120V AC area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
RU : Russian model
HCD-EC69/EC79/EC99
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.
• 2 : nonfl ammable resistor.
• C : panel designation.
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
• A : B+ Line.
• B : 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 Boards –
no mark : TUNER (FM/AM)
• 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 : TUNER (FM/AM)
J
: CD PLAY
E : USB
f : PC IN
• Abbreviation
AR : Argentina model
E2 : 120V AC area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
RU : Russian model
• Circuit Boards Location
MAIN board
PANEL board
JACK board
USB board
• Abbreviation
AR : Argentina model
E2 : 120V AC area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
RU : Russian model
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HCD-EC69/EC79/EC99
2CH-4CH AMP board (EC99)
2CH-4CH AMP board (EC69/EC79),
3CH AMP board (EC99)
PT-SWITCH board (E2, E51)
PT-SINGLE board (AEP, RU, MX, AR)
CD board
KEY board
REG board
Ver. 1.1