CDX-C4750, CDX-C6600 - Sony Car Audio Service Manual (repair manual). Page 21

View Sony CDX-C4750 / CDX-C6600 Service Manual online

4-3. CIRCUIT BOARDS LOCATION
– 23 –
– 24 –
• Waveforms
(MODE:PLAY)
1
2
3
4
5
6
7
Approx. 620mVp-p
IC2  
1
  (FEO)
0V
IC2  
  (RFO)
1.2Vp-p
Approx. 200mVp-p
IC2  
$™
  (TEO)
0V
IC1  
3
  (MDP)
2.6Vp-p
7.6
µ
sec
IC1  
  (LRCK)
5.8Vp-p
22.7
µ
sec
IC1  
@™
  (BCK)
5.7Vp-p
474nsec
16.89MHz
IC1  
  (XTAI)
3.2Vp-p
tuner assy
(TU601)
DISC IN SW board
DISPLAY board
LOAD SW board
SERVO board
MAIN board
LIMIT SW board
SUB board
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
%
: indicates tolerance.
¢
: internal component.
C
: panel designation.
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
®
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
Note: The components identified by mark 
!
 or dotted line
with mark 
!
 are critical for safety.
Replace only with part number specified.
4-4. PRINTED WIRING BOARDS — CD MECHANISM SECTION —
CDX-C4750/C6600
– 25 –
– 26 –
Ref. No.
Location
IC1
D-2
IC2
E-5
IC3
B-2
Q1
F-5
Q2
F-6
• Semiconductor
Location
(Page 31)
– 27 –
– 28 –
CDX-C4750/C6600
4-5. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 24 for Waveforms.
• Refer to page 41 for IC Block Diagrams.
note:
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
: Impossible to measure
(P
age 33)
– 29 –
– 30 –
CDX-C4750/C6600
4-6. PRINTED WIRING BOARD — MAIN SECTION —
(D402)
C-3
D403
B-3
(D601)
F-5
(D602)
F-4
(D702)
F-12
(D801)
B-14
(D807)
B-13
(D809)
B-13
(D810)
B-13
(D823)
A-14
(D824)
A-14
(D851)
K-10
(D852)
K-10
(D853)
K-12
(D854)
J-12
(D856)
J-12
(D901)
D-12
(D902)
D-12
(D903)
D-12
(D904)
E-13
D909
D-9
D910
D-10
(D912)
H-13
(D913)
H-12
D914
B-9
(D915)
G-13
(D916)
I-13
D918
J-9
D919
K-9
D920
B-9
(D924)
E-13
(IC200)
A-7
IC401
F-7
IC601
F-3
(IC702)
F-11
IC801
J-7
IC803
D-14
(IC901)
F-13
(IC902)
I-6
Q110
B-4
Q111
B-4
Q210
C-4
Q211
C-5
(Q401)
B-3
(Q402)
C-3
(Q603)
G-5
(Q609)
G-5
(Q610)
F-5
(Q612)
F-5
(Q613)
F-4
(Q614)
G-3
Q615
F-5
(Q901)
I-13
(Q902)
I-13
(Q903)
I-13
(Q904)
G-13
Q905
C-9
Q906
D-11
Q907
I-12
Q908
I-12
(Q909)
I-12
(Q910)
H-13
(Q911)
H-12
(Q912)
H-13
Q913
G-13
Q914
K-9
Q915
K-9
Q916
D-9
Q919
G-13
Q924
D-12
Q925
D-11
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
(          ) : SIDE B

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