Read Sony ICD-P620 Service Manual online
ICD-P620
ICD-P620
10
10
For Schematic Diagrams.
Note:
• All capacitors are in
• 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
• 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.
– Main (1/2), (2/2) sections –
no mark : PB
(
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
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E :
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.)
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
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• f
: internal component.
•
: Pattern from the side which enables seeing.
• Waveforms
– MAIN Board –
– MAIN Board –
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
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.
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))
IC2002 MM3111AWLE (MAIN Board (1/2))
IC2002 MM3111AWLE (MAIN Board (1/2))
IC703
RL (OSC2)
0.5 V/DIV, 0.1
μsec/DIV
IC703
XB (XO)
0.5 V/DIV, 20
μsec/DIV
0.5 V/DIV, 0.1
μsec/DIV
IC101
UB (XOUT)
1.2 Vp-p
4.096 MHz
8 MHz
2.8 Vp-p
32.768 kHz
3.5 Vp-p
IC506 XC9105D091MR (MAIN Board (1/2))
1
BIAS
3
4
2
8
6
5
7
SHUTDOWN
BIAS
+IN
-IN
VO2
GND
VDD
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
D701
E-12
D702
E-12
D2001
E-12
D2002
C-6
D2004
C-5
(D2007) I-6
D2008
D2008
A-12
IC101
C-9
IC102
D-10
(IC501) J-6
(IC502) G-6
(IC503) I-6
(IC504) H-3
(IC506) I-6
(IC701) I-8
(IC702) G-10
(IC703) I-10
IC2001 D-8
IC2002 D-11
(IC502) G-6
(IC503) I-6
(IC504) H-3
(IC506) I-6
(IC701) I-8
(IC702) G-10
(IC703) I-10
IC2001 D-8
IC2002 D-11
(Q101) G-11
Q106
Q106
B-10
(Q506) H-5
(Q507) I-4
(Q508) I-4
Q509
(Q507) I-4
(Q508) I-4
Q509
C-4
(Q702) G-10
Q703
Q703
C-8
Q704
C-5
(Q2001) H-12
Q2002 C-5
Q2002 C-5
( ): SIDE B
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