Sony MEX-BT39UW 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.
• : 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
• Abbreviation
CND : Canadian model
EA : Saudi Arabia model
MX : Mexican model
RU : Russian model
MEX-BT39UW/BT3900U/BT3950U
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.
• : Internal component.
f
• C : Panel designation.
Note: Note:
The components identi- Les composants identifi és
fi ed by mark 0 or dotted par une marque 0 sont
line with mark 0 are criti- critiques pour la sécurité.
cal for safety. Ne les remplacer que par
Replace only with part une pièce portant le nu-
number specifi ed. méro spécifi é.
• 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 conditions.
no mark : TUNER (FM)
( ) : TUNER (AM or MW)
< > : CD PLAY
* : Impossible to measure
• 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.
: AUDIO
F
: TUNER
f
J : CD PLAY
p : Bluetooth
: USB
c
: MIC
N
: AUX IN
L
a : BUS AUDIO IN
• Abbreviation
CND : Canadian model
EA : Saudi Arabia model
MX : Mexican model
RU : Russian model
• Circuit Boards Location
KEY board
– Front panel –
• Waveforms
– MAIN Board –
IC501 qa (XOUT)
1
2.9 Vp-p
30.5 s
1 V/DIV, 20 s/DIV
IC501 qd (OSCOUT)
2
3.5 Vp-p
126 ns
2 V/DIV, 50 ns/DIV
IC001 qh (XTAL1)
3
0.05 Vp-p
250 ns
0.05 V/DIV, 50 ns/DIV
23 23
MEX-BT39UW/BT3900U/BT3950U
SERVO board
SWITCH board
BT board
MAIN board
ANTENNA board
– Main unit –