Sony DSX-A50BT Service Manual page 16

DSX-A50BT
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.
• 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
(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.
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
• Abbreviation
IND : Indian model
Note: When the MAIN board in this unit is replaced, the destination
setting is necessary. Refer to "NOTE THE MAIN BOARD OR
SYSTEM CONTROLLER (IC101) REPLACING" (page 4).
DSX-A50BT
For Schematic Diagrams.
Note:
• All capacitors are in —F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in : and 1 / W or less unless otherwise
4
specifi ed.
• f : internal component.
• C : panel designation.
• A : B+ Line.
• Power voltages is dc 14.4V and fed with regulated dc
power supply from ACC and BATT cords.
• 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 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
: AUDIO
f
: TUNER
d : USB
E
: AUX
a
: Bluetooth
N : MIC
• Abbreviation
IND : Indian model
Note: When the MAIN board in this unit is replaced, the destination
setting is necessary. Refer to "NOTE THE MAIN BOARD OR
SYSTEM CONTROLLER (IC101) REPLACING" (page 4).
• Waveforms
– MAIN Board –
IC101 9 (XOUT)
1
2.5 Vp-p
30.5 Ps
1 V/DIV, 20 Ps/DIV
IC101 qa (OSCOUT)
2
3.5 Vp-p
126 ns
1 V/DIV, 50 ns/DIV
IC501 1 (BST), 2 (LX)
3
18.2 Vp-p
2.4 Ps
5 V/DIV, 1 Ps/DIV
IC501 8 (SYNC)
4
3.3 Vp-p
2.4 Ps
1 V/DIV, 1 Ps/DIV
IC201 ug (X12OUT)
5
3.2 Vp-p
83 ns
1 V/DIV, 50 ns/DIV
16 16
– KEY Board –
IC901 rf (OSC)
qa
2.6 Vp-p
28.4 Ps
1 V/DIV, 10 Ps/DIV