Sony STR-KM2 Service Manual page 18

STR-KM2/KM3
Ver. 1.1
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.
• : Internal component.
f
• : 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
(SIDE B) from the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(SIDE A) the parts face are indicated.
• Indication of transistor.
C
Q
These are omitted.
B E
B C E
These are omitted.
• Abbreviation
AR : Argentina model
AUS : Australian model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model
RU : Russian model
SAF : South African model
SP : Singapore model
TH : Thai model
STR-KM2/KM3
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.
1
• All resistors are in  and / 4 W or less unless otherwise
specifi ed.
• : internal component.
f
• 2 : nonfl ammable resistor.
• 5 : fl usible 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.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
• Voltages are taken with a VOM (Input impedance 10
M). Voltage variations may be noted due to normal pro-
duction 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.
: TUNER (FM/AM)
F
: TUNER
f
: VIDEO
E
: DVD (DIGITAL)
J
• Abbreviation
AR : Argentina model
AUS : Australian model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model
RU : Russian model
SAF : South African model
SP : Singapore model
TH : Thai model
• Waveforms
– DIGITAL AUDIO Board –
1
IC2105 os (X1(X_OUT))
3.0 Vp-p
4.0 MHz
500 mV/DIV, 100 ns/DIV
2
IC2123 2 (MCK)
240m Vp-p
24.59 MHz
100 mV/DIV, 10 ns/DIV
3
IC2123 3 (BCK)
3.0 Vp-p
3.1 MHz
500 mV/DIV, 100 ns/DIV
4
IC2123 4 (LRCK)
3.4 Vp-p
47.81 kHz
500 mV/DIV, 5 s/DIV
5
IC2806 ea (XOUT)
1.54 Vp-p
24.57 MHz
500 mV/DIV, 10 ns/DIV
18 18
– DISPLAY Board –
6
IC100 5 (OSC)
1.29 Vp-p
154.8 kHz
200 mV/DIV, 2.5 s/DIV