Sony WX-GT90BT Service Manual page 28

WX-GT90BT/GT90BTE/GT99BT
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
(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
• Abbreviation
CND : Canadian model
IND : Indian model
RU : Russian model
Note 1: When the complete MAIN board is replaced, the destination
setting is necessary. Refer to "NOTE THE MAIN BOARD
OR SYSTEM CONTROLLER (IC501) REPLACING" on
page 4.
Note 2: When the complete BT board or complete MAIN board (in-
cluding BT board) is replaced, it is necessary to confi rm op-
eration. Refer to "BLUETOOTH FUNCTION CHECKING
METHOD USING A CELLULAR PHONE" on page 8.
WX-GT90BT/GT90BTE/GT99BT
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.
• B : 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 (FM)
< > : CD PLAY
* : Impossible to measure
• Voltages are taken with 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
: TUNER
f
J : CD
d : USB
: SIRIUS/XM
h
E : AUX
a : Bluetooth
• Abbreviation
CND : Canadian model
IND : Indian model
RU : Russian model
Note 1: When the complete MAIN board is replaced, the destination
setting is necessary. Refer to "NOTE THE MAIN BOARD
OR SYSTEM CONTROLLER (IC501) REPLACING" on
page 4.
Note 2: When the complete BT board or complete MAIN board (in-
cluding BT board) is replaced, it is necessary to confi rm op-
eration. Refer to "BLUETOOTH FUNCTION CHECKING
METHOD USING A CELLULAR PHONE" on page 8.
• Waveforms
– MAIN Board –
IC1300 1 (BST)
1
18.2 Vp-p
2.46 s
5 V/DIV, 1 s/DIV
IC501 9 (XOUT)
2
2.6 Vp-p
30.4 s
1 V/DIV, 10 s/DIV
3 IC501 qa (OSCOUT)
3.6 Vp-p
126.5 ns
1 V/DIV, 50 ns/DIV
IC701 yj (XO)
4
3.7 Vp-p
59 ns
1 V/DIV, 20 ns/DIV
IC601 <zc/ (XO)
5
1.1 Vp-p
83 ns
500 mV/DIV, 50 ns/DIV
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