Sony HCD-DR7AV Service Manual page 27

www.freeservicemanuals.info
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. pF: µµF
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.
• : internal component.
¢
• C : panel designation.
Note: The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• 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 pro-
duction tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
g : VIDEO/MD
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J : CD
c : digital out
I : PHONO
• Abbreviation
EA : Saudi Arabia model.
AUS : Australian model.
SP : Singapore model.
TH : Thai model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• ® : Through hole.
• : internal component.
¢
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor
B C E
These are omitted
C
Q
These are omitted
B E
– 35 –
18/2/2013
WAVEFORMS
– BD (CD) SECTION –
1
3.1Vp-p
16.9MHz
IC101 ^§ XTAI
2
1.2Vp-p
(PLAY)
IC101 %¡ RF AC
3
2.5V
APPROX 500mVp-p (PLAY)
IC101 $¡ TE
4
2.5V
APPROX 200m Vp-p (PLAY)
IC101 #ª FE
5
2.4Vp-p
7.5µsec
IC101 @§ MDP
World of free manuals
www.nostatatech.nl
HCD-DR7AV/XB800AV
– MAIN (2/5) SECTION –
1
5.5Vp-p
16MHz
IC501 !£ X-OUT
2
5.2Vp-p
32.768kHz
IC501 !¡ XC-OUT
– PANEL FL SECTION –
1
3.4Vp-p
12.5MHz
IC601 &™ X-OUT
– 36 –