HT-CT550W, STR-CT550WT - Sony Audio Service Manual (repair manual). Page 15

Read Sony HT-CT550W / STR-CT550WT Service Manual online

STR-CT550WT
STR-CT550WT
15
15
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.
•      f  : Internal component.
• 
2 : Nonfl ammable resistor.
• 
5 : Fusible resistor.
• 
C : Panel designation.
THIS  NOTE  IS  COMMON  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• 
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 VOM (Input impedance 10 M
Ω).
  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
 
E  : VIDEO
• Abbreviation
  CND  : Canadian model
 TW  : 
Taiwan 
model
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: 
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen 
from the pattern face are indicated.
Parts on the parts face side seen from 
the parts face are indicated.

Note: 
The components identi-
fi
 ed by mark 
0 or dotted 
line with mark 
0 are criti-
cal for safety. 
Replace only with part 
number specifi ed.

Note: 
Les composants identifi és 
par une marque 
0 sont 
critiques pour la sécurité. 
Ne les remplacer que par 
une pièce portant le nu-
méro spécifi é.

Caution:
Pattern face side:
(Conductor Side)
Parts face side: 
(Component Side)
Parts on the pattern face side seen 
from the pattern face are indicated.
Parts on the parts face side seen from 
the parts face are indicated.
• Abbreviation
  CND  : Canadian model
 TW  : 
Taiwan 
model

Note: When the MAIN board or IC3100 on the MAIN board 
are replaced, spread the compound referring to “NOTE 
OF REPLACING THE IC3100 ON THE MAIN 
BOARD AND THE COMPLETE MAIN BOARD” on 
servicing notes (page 3).

Note: When the MAIN board or IC3100 on the MAIN board 
are replaced, spread the compound referring to “NOTE 
OF REPLACING THE IC3100 ON THE MAIN 
BOARD AND THE COMPLETE MAIN BOARD” on 
servicing notes (page 3).
•  Indication of transistor.
 
C
B
These are omitted. 
E
Q
 
C E
B
These are omitted. 
• Waveforms
– HDMI Board –
– MAIN Board –
1

IC3500 4 (XTALOUT)
1 V/DIV, 20 ns/DIV
37.2 ns
3.2 Vp-p
2

IC3000 qa (XOUT)
1 V/DIV, 50 ns/DIV
100 ns
3.5 Vp-p
qd

IC1011 qk (LRCK)
1 V/DIV, 10 
Ps/DIV
20.8 
Ps
3.4 Vp-p
qf

IC1011 ql (BCK)
1 V/DIV, 200 ns/DIV
324 ns
3.4 Vp-p
qh

IC1011 r; (XTO)
1 V/DIV, 20 ns/DIV
40.6 ns
1.8 Vp-p
qj

IC3010 rk  (XFSOIN)
500 mV/DIV, 10 ns/DIV
20.3 ns
1.2 Vp-p
qg

IC1011 w; (SCKO)
1 V/DIV, 20 ns/DIV
41 ns
2.7 Vp-p
qa

IC5001 wg (XTAL2)
1 V/DIV, 20 ns/DIV
40 ns
2.8 Vp-p
qs

IC1002 qd (Xout)
1 V/DIV, 100 ns/DIV
166 ns
2.9 Vp-p
qk

IC301 ql (X2)
200 mV/DIV, 20 
Ps/DIV
30.5 
Ps
0.4 Vp-p
•  HDMI board is multi-layer printed board. However, the 
patterns of intermediate layers have not been included in 
diagrams.
Ver. 1.1
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