Sony HCD-C450 Service Manual page 31

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 diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• : internal component.
f
• C : panel designation.
Note: Note:
The components identified by Les composants identifiés par
mark ! or dotted line with mark une marque ! sont critiques
! are critical for safety. pour la sécurité.
Replace only with part number Ne les remplacer que par une
specified. pièce portant le numéro spécifié.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages and waveforms are dc with respect to ground in
service mode.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : STOP
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD
c : DVD
g : VIDEO
G
: Y
d
: CHROMA
r : B-Y
q : R-Y
• Abbreviation
AUS : Australian model
CND : Canadian model
E12 : 220V-240V AC in E model
E32 : 110V-240V AC (without VS) in E model
EA : Saudi Arabia model
MX : Mexican model
SP : Singapore model
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• : Through hole.
a
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component A) the parts face are indicated.
• Indication of transistor
C
Q
These are omitted
B C E
B E
These are omitted
• Waveforms
– RF-240 Board – – DVD Board –
1 7
1.5Vp-p
500mV/DIV 100ns/DIV
6.25ns (16MHz)
IC001 tl (SIGO) DVD PLAY IC901 ek (X2)
8
2
1.5Vp-p
500mV/DIV 400ns/DIV
81.4ns (12.288MHz)
IC001 tl (SIGO) CD PLAY IC606 w; (XMCK)
3 9
1.8Vp-p
500mV/DIV 40ms/DIV
74ns (13.5MHz)
IC607 qs (MCLK2)
IC001 ra (TE) DVD PLAY
0
4
1.8Vp-p
500mV/DIV 200ms/DIV
37ns (27MHz)
IC001 ra (TE) CD PLAY IC102 7
5 qa
190mVp-p
100mV/DIV 40ms/DIV
60.6ns (16.5MHz)
IC103 td
IC001 rs (FE) DVD PLAY
6
840mVp-p
500mV/DIV 40ms/DIV
IC001 rs (FE) CD PLAY
31 31
– AMP Board – – COMPONENT Board –
qs
3.5Vp-p
7.2 Vp-p
20.3ns (49.152MHz)
IC300 4
qd
5 Vp-p
3.8Vp-p
13 µ s
IC305 wf (OUTL1+)
– I/O BOARD –
3.5Vp-p
qf
2.5Vp-p
H
IC701 qf, qg Test Mode (Video)
2Vp-p
qg
(XTI) 2Vp-p
H
IC701 9, 0 Test Mode (Video)
3.4 Vp-p
qh
0.9Vp-p
(X1)
H
Q700 E Test Mode (Video)
HCD-C450
qj
1.5 Vp-p
H
IC703 9, q; Test Mode (Video)
qk
H
1.5 Vp-p
IC703 qs, qd Test Mode (Video)
ql
1.5 Vp-p
H
IC703 qf, qg Test Mode (Video)