Sony CDX-C6850 Service Manual ▷ View online
RELAY board
MAIN board
SERVO board
DISPLAY board
LIMIT SW board
SUB board
tuner unit
(TU601)
(TU601)
DISC IN SW board
LOAD SW board
4-4. CIRCUIT BOARDS LOCATION
– 27 –
– 28 –
• 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
@º
(LRCK)
5.8Vp-p
22.7
µ
sec
IC1
@™
(BCK)
5.7Vp-p
474nsec
16.89MHz
IC1
#¢
(XTAI)
3.2Vp-p
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 schematic diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
¢
: internal component.
•
C
: panel designation.
Note:
The components identi-
fied by mark
The components identi-
fied by mark
!
or dotted
line with mark
!
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
•
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
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• 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 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.
CDX-C6850
4-5. PRINTED WIRING BOARDS — CD MECHANISM SECTION —
CDX-C6850
– 29 –
– 30 –
Ref. No.
Location
IC1
D-3
IC2
E-5
Q1
F-5
Q2
F-6
Q3
F-2
Q4
F-2
Q5
F-2
Q6
F-3
• Semiconductor
Location
(Page 35)
M902
(SLED)
M901
(SPINDLE)
– 31 –
– 32 –
CDX-C6850
4-6. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 28 for Waveforms.
• Refer to page 48 for IC Block Diagrams.
note:
• Voltage and waveforms are dc with respect to ground
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
no mark : CD PLAY
∗
: Impossible to measure
(Page 37)
– 33 –
– 34 –
CDX-C6850
4-7. PRINTED WIRING BOARD — MAIN SECTION —
(D402)
C-3
D403
B-3
(D601)
F-5
(D604)
E-5
D701
H-9
(D702)
F-12
(D801)
B-14
(D807)
B-13
D808
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-11
(D856)
J-12
(D901)
D-12
(D902)
D-12
(D903)
D-12
(D904)
E-13
D909
D-10
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-6
IC402
D-5
IC403
D-7
IC406
D-3
IC601
F-3
(IC702)
F-11
IC703
G-9
IC801
J-7
IC803
D-14
(IC901)
F-13
(IC902)
J-6
Q110
B-4
Q111
B-4
Q210
C-4
Q211
C-5
(Q401)
B-3
(Q402)
C-3
(Q603)
G-5
(Q608)
K-5
(Q609)
G-5
(Q610)
F-5
(Q612)
F-5
(Q613)
F-4
Q615
F-5
(Q616)
K-5
Q617
K-5
Q802
K-13
Q803
K-13
Q806
C-13
(Q901)
I-13
(Q902)
I-13
(Q903)
I-13
(Q904)
G-13
Q905
C-10
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
C-8
Q919
G-13
Q924
D-12
Q925
D-11
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
( ) : SIDE B
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