ICD-B600 (serv.man2) - Sony Audio Service Manual (repair manual). Page 10

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ICD-B600
ICD-B600
10
10
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.
• 
C : panel designation.
• 
A  : B+ Line.
•  Power voltage is dc 3 V and fed with regulated dc power 
supply from battery terminal.
•  Voltages and waveforms are dc with respect to ground 
under no-signal (detuned) conditions.
  no mark : PB
 ( 
REC
•  Voltages are taken with a 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.
 
E : 
PB
 
a : 
REC
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.
•      
z
  
Through 
hole.
•      f 
: internal component.
• 
 : Pattern from the side which enables seeing.
• Waveforms
– MAIN Board –
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.
•  IC Block Diagrams
IC102  MM3111AWLE (MAIN Board (1/2))
IC506  XC9105D091MR (MAIN Board (1/2))
1
BIAS
3
4
2
8
6
5
7
SHUTDOWN
BIAS
+IN
-IN
VO2
GND
VDD
VO1
5
BUFFER
DRIVER
PHASE
COMPENSATION
PHASE
COMPARATOR
RAMP WAVE
GENERATOR,
OSC
4
CURRENT
RIPPLE DETED
AND FB
VREF WITH
SOFT START,
CE
PWM/PFM
CONTROLER
ERROR
AMP
1
2
3
FB
VDD
CE
EXT
GND
 Ref. No.  Location
• Semiconductor 
Location
 (MAIN 
Section)
 (D505)  H-6
 D701 
E-12
 D702 
E-12
 IC101 
C-9
 IC102 
D-11
 (IC501)  J-6
 (IC502)  G-6
 (IC503)  I-6
 (IC504)  G-3
 (IC506)  H-6
 (IC701)  I-7
 (IC702)  G-10
 (IC703)  I-10
 (Q101)  G-11
 (Q102)  F-12
 Q106 
B-10
 (Q506)  H-5
 (Q507)  I-4
 (Q508)  I-4
 (Q702)  H-10
 Q703 
C-8
  (       ): SIDE B
  IC703 
RK (OSC1)
0.5 V/DIV, 0.1 
μsec/DIV
  IC703 
X (XI)
0.5 V/DIV, 20 
μsec/DIV
32.768 kHz
1.1 Vp-p
8 MHz
1.3 Vp-p
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