Sony DPS-V55, Руководство по обслуживанию

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DPS-V55/V55M
– 13 – – 14 –
SECTION 5
DIAGRAMS
• Circuit Boards Location
VOLUME board
LCD board
ENCODER board
MAIN board
POWER SWITCH board
POWER COVER board
JACK board
(DPS-V55M)
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 /
4
W or less unless otherwise
specified.
•
C
: panel designation.
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.
• Indication of transistor.
•
U
: B+ Line.
•
V
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is each block.)
B
These are omitted.
C E
Q
Note:
The components identi-
fied by mark
! or dotted
line with mark ! are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
! sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• IC Block Diagrams – MAIN BOARD –
IC501, 551 CS4222-KS
IC505 TC74VHC74F
IC703 M62021FP-600C
2
3 4
ANALOG LOW-PASS
& OUTPUT STAGE
SERIAL AUDIO DATA
INTERFACE
CONTROL PORT
DIGITAL FILTER
WITH
DE-EMPHASIS
VOLUME
CONTROL
RIGHT
DAC
LEFT
DAC
RIGHT
ADC
DIGITAL
FILTER
LEFT
ADC
VOLUME
CONTROL
5
28 27 26
6
7 8 9
10 11 12 13 14
15 25 24 23 22 21 20 19 18 17 16
1
MCLK LRCK
NC
SCLK
VD
DGND
SDOUT
SDIN
SCL/CCLK SDA/CDIN
DEM0
NC
NC AINR– AINR+ DEM1 AINL– AINL+ VA AGND AOUTR– AOUTR+ AOUTL+ AOUTL– NC
SMUTE
AD0/CS
RST
• Signal path.
F : CH1
L
: CH2
f
: CH3
h : CH4
g : DIGITAL (CH1, 2)
i : DIGITAL (CH3, 4)
14
1 2 3 4 5 6 7
13 12 11 10 9 8
VCC
GND
CK
CLR
CK
CLR
Q
PR
Q
Q
PR
Q
D
D
2 3 4
COMPARATOR
5 6 7 8
1
RESET
CIRCUIT
DELAY
CIRCUIT
1.24V
GND RES
CT
VIN
VBAT VOUT
CS RES