Technics SL-HD505, Service Manual

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BCLK
LRCK
SRDATA
DV
DD
1
DVss1
TX
MCLK
MDATA
MLD
SENSE
/FLOCK
/TLOCK
BLKCK
SQCK
SUBQ
DMUTE
STAT
/RST
SMCK
CSEL
TRV TVD PC ECM ECS KICK TRD FOD
VREF
FBAL TBAL FE TE RFENV VDET OFT TRCRS /RFDET BDO LDON
PLLF2
DSLF2
WVEL
ARF
IREF
DRF
DSLF
PLLF
VCOF
AV
DD
2
AVss2
EFM
PCK
VCOF2
SUBC
SBCK
Vss
X1 IN
X2 OUT
V
DD
BYTCK
/CLDCK
FCLK
IPFLAG
FLAG CL
VS
CRC
DEMPH
RESY
IOSEL /TEST
AV
DD
1
OUTL
A
Vss1
OUTR
RSEL
IOV
DD
PSEL
MSEL
SSEL
23 21 22 20 19 18 17 16 15 14
1
3 2 4 5 6 7 8 9 10 11 12 13
TP15 TP19 TP22
A
B
TP23
TP21
C727
50V1
C728
50V1
C725
1000P
C726
1000P
R718
1K
R717
1K
C754 470P
C730
0.1
C731
6.3V220
R721
100
C732
6.3V220
C733
0.1
C753
470P
A
B
CN702
C743
0.1
TP17
L701
A B
TP14 TP13
C
TP12 TP8 TP7 TP6
TP4
TP3
D E F G H I
TP1
S701
(REST)
TP16
C745
0.1
A
B
C
D
E
F
G
H
I
G E D C B A A B C E F G H I
Q702
DTC143XUA106
SWITCHING
R712
220
C718
0.1
C717
0.1
C744
8200P
R709
68K
R71
1
82K
C722
3P
X701
(33.8688MHz)
R714
6.8K
C721
3P
C724
0.1
C723
10V220
IC702
MN662790RSA1
SERVO PROCESSOR/
DIGITAL SIGNAL PROCESSOR/
DIGITAL FILTER/
D/A CONVERTER
+B(2)
Rch
OUT
5V
5V
5V
SUBC
/RST
ST
A
T
SBCK
SUBQ SQCK
BLKCK SPEED
MLD
MD
A
T
A
MCLK
P
.GND +B(1)
TX
CLDCK
D.GND A.GND
Lch
OUT
REST
SW
L702
D
R753
10
F
R741
47K
R742
220K
C760
0.1
NC NC
TP20
To MAIN CIRCUIT(CN402)
on SCHEMATIC DIAGRAM 3
SCHEMATIC DIAGRAM 2
C
TP11
TP10
TP9
TP2 TP5
7.8V
3.4V
3.4V
3.4V
3.4V
1.7V
0V
3.4V
0V
2.9V
0V (1.7V)
0V (3.3V)
3.4V
1.7V 3.4V
(0V)
1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 3.3V
(0V)
0V
(3.3V)
0V 0V
1.7V
1V
(1.2V)
1.7V
0V
3.4V
1.6V
1.6V
3.4V
3.4V
3.1V 1.6V
3.4V
1.6V 3.1V
3.4V
PLAY
1kHz, 0dB
2.2V
P P
PLAY
0V
3.3V
T 13.3ms.
300mV
P P
F=33.8688MHz
2.4V
P P
F=33.8688MHz
PLAY
0.8V
P P
PLAY
0V
3.3V
F=75Hz
PLAY
2ms. 0.1V/DIV.
0.6V
P P
PLAY
0.2V
P P
2ms. 0.1V/DIV.
PLAY
0V
2.9V
T 13.3ms.
3.4V
0V
PLAY
0V
3.3V
T 26.6ms.
3.4V
3.4V
3.4V
1.7V
1.7V
:POSITIVE VOLTAGE LINE :CD SIGNAL LINE
0.5 s. 0.2V/DIV.
PLAY
0V
3.3V
0.1 s. 2V/DIV.
SL-
SL- SL-
SL-HD50
HD50 HD50
HD505
5 5
5
20