Diagrams; Circuit Boards Location - Sony HCD-WZ5 Service Manual

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5-1. Circuit Boards Location

MAIN board
MS-128 board
LCD board
BACK-LIGHT board
ENTER-SW board
PANEL board
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SECTION 5

DIAGRAMS

CD board
WOOFER board
REGULATOR board
CD-TC-SW board
HP-AMP board
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THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
Note on Schematic Diagram:
• 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.
¢
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Power voltage is DC 4V, 9V and fed with DXA-WZ5 from
external connector (SYSTEM CONTROL 1).
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : FM
< > : CD
[ ] : TAPE
• 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
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E : PB (TAPE)
a : REC (TAPE)
J
: CD
L : MD
c : digital out
• Abbreviation
AUS : Australian model
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
KR : Korean model
TW : Taiwan model
• Waveforms
– CD Board –
1
IC103 qg (RFAC)
(PLAY mode)
1.0 Vp-p
200mV/DIV, 400ns/DIV
2
IC101 ua(XTAI)
59 ns
3.5 Vp-p
1V/DIV, 20ns/DIV
3 c o
IC104 yd (XO)
.
59 ns 4.4 Vp-p
1V/DIV, 20ns/DIV
15 15
2 4 2
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Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from
(SIDE B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(SIDE A) the parts face are indicated.
• Indication of transistor.
C
These are omitted. Q
B E
Q
B C E
These are omitted.
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B C E
These are omitted.
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– MAIN Board –
4
IC401 qa (XC-OUT)
3.1 Vp-p
30.5 µ s
1 V/DIV, 10 µ s/DIV
5
IC401 qd (X-OUT)
2.9 Vp-p
62.5 ns
m
1 V/DIV, 20 ns/DIV
HCD-WZ5
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