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Model
MDS-DRE1
Pages
79
Size
6.56 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
mds-dre1.pdf
Date

Sony MDS-DRE1 Service Manual ▷ View online

– 76 –
IC451
M62005L
– DISPLAY Board –
IC101
M66004M8FP
IC501
M5293L
INDICATION
CODE
RESISTOR
(8BIT x 16)
DECODER
(35BIT x 16)
DECODER
(35BIT x 16)
CODE/COMMAND
CONTROL
CIRCUIT
INDICATION
CONTROL
RESISTOR
INDICATION
CONTROLLER
DIGITAL
OUTPUT
CIRCUIT
CODE
WRITE
SERIAL
RECEIVE
CIRCUIT
OUTPUT
PORT
(2BIT)
CLOCK
GENERATOR
CIRCUIT
RAM WRITE
CODE SELECT
DIG12
|
DIG15
V
CC
2
SEG0
|
SEG26
V
SS
XIN
XOUT
V
CC
1
RES
DIG11
|
DIG0
CS
CLK
DATA
SEG35
|
SEG27
P1
P0
14
15
16
17
18
19
20
21
22
23
|
31
13
1
|
12
SEGMENT OUTPUT CIRCUIT
59
|
33
60
32
VP
64
|
61
– POWER Board –
IC401, 411
BA3963
1
MODE1(5V)
2
MODE2(7V)
3
C
4
RRC
5
RESET
6
5V
7
VCC
8
NC
9
NC
10
7V
11
PRE GND
12
GND
REF. V
OVER
CURRENT
PROTECT
+
OVER
CURRENT
PROTECT
+
1
2
3
4
5
VCC
Cd
RESET
INT
GND
+
+
RESET
SIGNAL
GENERATOR
INTERRUPT
SIGNAL
GENERATOR
2
5
5k
+
27k
OVERCURRENT
LIMITTER
OVERHEAT
PROTECTION
REFERENCE
VOLTAGE
GND
ON/OFF
IN
REFERENCE
VOLTAGE
OUT
3
4
1
– 77 –
6-24. IC  PIN  FUNCTION  DESCRIPTION
 BD BOARD   IC101   CXA1981AR (RF AMP, FOCUS/TRACKING ERROR AMP)
Pin No.
Pin Name
I/O
Function
1
VC
O
Middle point voltage (+2.5V) generation output terminal
2 to 7
A to F
I
Signal input from the optical pick-up detector
8
FI
I
Operational input for the F signal
9
FO
O
Operational output for the F signal
10
PD
I
Light amount monitor input from the optical pick-up block laser diode
11
APCREF
I
Reference voltage input terminal for setting laser power
12
TEMPI
I
Connected to the temperature sensor
13
GND
Ground terminal
14
AAPC
O
Laser amplifier output terminal to the automatic power control circuit
15
DAPC
O
Not used (open)
16
TEMPR
O
Output terminal for a temperature sensor reference voltage
17
XRST
I
Reset signal input from the system controller (IC101)    “L”: reset
18
SWDT
I
Writing serial data input from the system controller (IC101)
19
SCLK
I
Serial data transfer clock signal input from the system controller (IC101)
20
XLAT
I
Serial data latch pulse signal input from the system controller (IC101)
21
VREF
O
Reference voltage output terminal    Not used (open)
22
TENV
O
Not used (open)
23
THLD
I
Connected to the external capacitor for set the internal circuit
24
VCC
Power supply terminal (+5V)
25
TFIL
I
Connected to the external capacitor for set the internal circuit
26
TE
O
Tracking error signal output to the CXD2535CR (IC121)
27
TLB
I
Adder signal input of the tracking error
28
CSLED
I
Connected to the external capacitor for low-pass filter of the sled error signal
29
SE
O
Sled error signal output to the CXD2535CR (IC121)
30
ADFM
O
FM signal output of the ADIP
31
ADIN
I
Receives a ADIP FM signal in AC coupling
32
ADAGC
I
Connected to the external capacitor for ADIP AGC
33
ADFG
O
ADIP duplex signal (22.05 kHz 
±
 1 kHz) output to the CXD2535CR (IC121)
34
AUX
O
Auxiliary signal (I
3
 signal/temperature signal) output to the CXD2535CR (IC121)
35
FE
O
Focus error signal output to the CXD2535CR (IC121)
36
FLB
I
Adder signal input of the focus error    Not used (open)
37
ABCD
O
Light amount signal (ABCD) output to the CXD2535CR (IC121)
38
BOTM
O
Light amount signal (RF/ABCD) bottom hold output to the CXD2535CR (IC121)
39
PEAK
O
Light amount signal (RF/ABCD) peak hold output to the CXD2535CR (IC121)
40
RFAGC
I
Connected to the external capacitor for RF auto gain control circuit
41
RF
O
Playback EFM RF signal output to the CXD2535CR (IC121)
42
ISET
I
Connected to the external capacitor for set the internal circuit    22 kHz, BPF center frequency
43
AGCI
I
Receives a RF signal in AC coupling
44
RFO
O
RF signal output terminal
45
MORFI
I
Receives a MO RF signal in AC coupling
46
MORFO
O
MO RF signal output terminal
47
I
I
I-V converted RF signal I input from the optical pick-up block detector
48
J
I
I-V converted RF signal J input from the optical pick-up block detector
– 78 –
 
Pin No.
Pin Name
I/O
Function
1
FS256
O
Clock signal (11.2896 MHz) output terminal (MCLK system)    Not used (open)
2
FOK
O
Focus OK signal output to the system controller (IC101)
“H” is output when focus is on (“L”: NG)
3
DFCT
O
Defect on/off selection signal output terminal    Not used
4
SHCK
O
Track jump detection signal output to the system controller (IC101)
5
SHCKEN
I
Track jump detect enable input terminal    Fixed at “H” in this set
6
WRPWR
I
Laser power selection signal input from the system controller (IC101)
“L”: playback mode, “H”: recording mode
7
DIRC
I
Not used (fixed at “H”)
8
SWDT
I
Writing serial data input from the system controller (IC101)
9
SCLK
I
Serial data transfer clock signal input from the system controller (IC101)
10
XLAT
I
Serial data latch pulse signal input from the system controller (IC101)
11
SRDT
O
Reading serial data output to the system controller (IC101)
12
SENS
O (3)
Internal status (SENSE) output to the system controller (IC101)
13
ADSY
O
ADIP sync signal output terminal    Not used (open)
14
SQSY
O
Subcode Q sync (SCOR) output to the system controller (IC101)
“L” is output every 13.3 msec     Almost all, “H” is output
15
DQSY
O
Digital In U-bit CD format subcode Q sync (SCOR) output terminal
“L” is output every 13.3 msec     Almost all, “H” is output    Not used (open)
16
XRST
I
Reset signal input from the system controller (IC101)    “L”: reset
17
TEST4
I
Input terminal for the test (fixed at “L”)
18
CLVSCK
O
System clock signal output of the CLV    Not used (open)
19
TEST5
I
Input terminal for the test (fixed at “L”)
20
DOUT
O
Digital audio signal output terminal when playback mode (for digital optical out/digital coaxial
out)    Not used
21
DIN
I
Digital audio signal input terminal when recording mode (for digital optical in/digital coaxial in)
Not used (fixed at “L”)
22
FMCK
O
FM demodulation clock signal output of the ADIP    Not used (open)
23
ATER
O
ADIP CRC flag output terminal    Error present when “H” output    Not used (open)
24
REC
I
Recording/playback selection signal input from the system controller (IC101)
“L”: playback mode, “H”: recording mode
25
DVSS
Ground terminal (digital system)
26
DOVF
I
Validity flag input for the digital audio output    Fixed at “L” in this set
27
DODT
I
Serial data input from the ATRAC encoder (IC501)
28
DIDT
O
Serial data output terminal    Not used
29
DTI
I
Recording audio data input from the ATRAC encoder (IC501)
30
DTO
O (3)
Playback audio data output to the ATRAC decoder (IC601)
31
C2PO
O
C2PO signal (indicate output of the data error status) output to the ATRAC encoder (IC501) and
ATRAC decoder (IC601)
Playback mode: C2PO (“H”), Digital recording mode: digital in validity flag, Analog recording
mode: “L”
32
BCK
O
Serial in/out data bit clock signal (2.8224 MHz) output to the ATRAC encoder (IC501) and
ATRAC decoder (IC601) (MCLK system)
33
LRCK
O
L/R sampling clock signal (44.1 kHz) output to the ATRAC encoder (IC501) and ATRAC
decoder (IC601) (MCLK system)
34
XTAO
O
System clock signal (512Fs=22.5792 MHz) output terminal    Not used (open)
35
XTAI
I
System clock signal (512Fs=22.5792 MHz) input from the ATRAC encoder (IC501)
* I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
BD BOARD   IC121   CXD2535CR
(DIGITAL SIGNAL PROCESSOR,  DIGITAL SERVO PROCESSOR, EFM/ACIRC ENCODER/DECODER
– 79 –
Pin No.
Pin Name
I/O
Function
36
MCLK
O
MCLK clock signal (22.5792 MHz) output terminal    Not used (open)
37
XBCK
O
Invert output of the BCK (pin #™)    Not used (open)
38
DVDD0
Power supply terminal (+5V) (digital system)
39
WDCK
O
Word clock signal (88.2 kHz) output terminal (MCLK system)    Not used (open)
40
RFCK
O
Read frame clock signal (7.35 kHz) output terminal (MCLK system)    Not used (open)
41
WFCK
O
Write frame clock signal (7.35 kHz) output terminal (EFM decoder PLL system when playback
mode, EFM encoder PLL system when recording mode)    Not used (open)
42
GTOP
O
GTOP signal output terminal
Open the playback EFM sync protection window when “H” output    Not used (open)
43
GFS
O
Guard frame sync signal output terminal    The GFS signal becomes “H” when the playback EFM
frame sync and interpolation protection timing match    “L”: NG, “H”: OK
Not used (open)
44
XPLCK
O
EFM decoder PLL clock signal (98Fs=4.3218 MHz) output terminal
PLL is made for XPLCK so that changes in the reversion and falling edge of the EFM PLL clock
and the EFM signal match    Not used (open)
45
EFMO
O
EFM signal output terminal when recording mode
46
RAOF
O
Internal RAM overflow detect signal output terminal (monitor output of decoder)
RAOF is a signal generated when the RAM exceeds the 
±
4 jitter margin    Not used (open)
47
MVCI
I
Oscillation input of the digital in PLL    Not used (fixed at “L”)
48
TEST2
I
Input terminal for the test (fixed at “L”)
49
DIPD
O (3)
Phase comparison output of the digital in PLL
Internal VCO (frequency: low 
 “H”), External VCO (frequency low 
 “L”)
50
DVSS1
Ground terminal (digital system)
51
DICV
I (A)
Internal VCO control voltage input of the digital in PLL
52
DIFI
I (A)
Internal VCO filter input of the digital in PLL
53
DIFO
O (A)
Internal VCO filter output of the digital in PLL
54
AVDD1
Power supply terminal (+5V) (analog system)
55
ASYO
O
Playback EFM full-swing output terminal (“L”=VSS, “H”=VDD)
56
ASYI
I (A)
Playback EFM asymmetry comparator voltage input terminal
57
BIAS
I (A)
Playback EFM asymmetry circuit constant current input terminal
58
RFI
I (A)
Playback EFM RF signal input from the CXA1981AR (IC101)
59
AVSS1
Ground terminal (analog system)
60
CLTV
I (A)
Internal VCO control voltage input for master clock of the decoder PLL
61
PCO
O (3)
Phase comparison output for master clock of the decoder PLL
62
FILI
I (A)
Filter input for master clock of the decoder PLL
63
FILO
O (3)
Filter output for master clock of the decoder PLL
64
PEAK
I (A)
Light amount signal (RF/ABCD) peak hold input from the CXA1981AR (IC101)
65
BOTM
I (A)
Light amount signal (RF/ABCD) bottom hold input from the CXA1981AR (IC101)
66
ABCD
I (A)
Light amount signal (ABCD) input from the CXA1981AR (IC101)
67
FE
I (A)
Focus error signal input from the CXA1981AR (IC101)
68
AUX1
I (A)
Auxiliary signal (I
3
 signal/temperature signal) input from the CXA1981AR (IC101)
69
VC
I (A)
Middle point voltage (+2.5V) input from the CXA1981AR (IC101)
70
ADIO
O (A)
Monitor output of the A/D converter input signal    Not used (open)
71
TEST3
I (A)
Input terminal for the test (fixed at “L”)
72
AVDD2
Power supply terminal (+5V) (analog system)
73
ADRT
I (A)
A/D converter operational range upper limit voltage input terminal (fixed at “H” in this set)
74
ADRB
I (A)
A/D converter operational range lower limit voltage input terminal (fixed at “L” in this set)
75
AVSS2
Ground terminal (analog system)
76
SE
I (A)
Sled error signal input from the CXA1981AR (IC101)
* I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
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