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Model
DX-SX1 (serv.man2)
Pages
76
Size
3.97 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Including circuit diagrams
File
dx-sx1-sm2.pdf
Date

Sharp DX-SX1 (serv.man2) Service Manual ▷ View online

DX-SX1H
– 49 –
IC504  RH-iX2842AFZZ: Spindle Motor Driver (IX2842AF)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Pin No.
Terminal
Name
Function
Pin No.
Terminal
Name
Function
1
PG
Power GND terminal
15
SG
Signal GND terminal
2
H1+
Hall element 1 positive input terminal
16
VCC
Power terminal
3
H1-
Hall element 1 negative input terminal
17
ECR
Torque instruction reference input terminal
4*
NC
Not used
18
EC
Torque instruction input terminal
5
H2+
Hall element 2 positive input terminal
19*
NC
Not used
6
H2-
Hall element 2 negative input terminal
20
PCI
Current feedback phase compensating terminal
7
VH
Hall bias terminal
21
VM
Motor power terminal
8
H3+
Hall element 3 positive input terminal
22
CS1
Current detection terminal 1
9
H3-
Hall element 3 negative input terminal
23*
NC
Not used
10
SS
Start/Stop switching terminal
24*
NC
Not used
11*
TFLG
Thermal protection monitor terminal
25*
NC
Not used
12
FG
FG signal output terminal
26
A3
Drive output 3
13
BRK
Break mode set terminal
27
A2
Drive output 2
14*
NC
Not used
28
A1
Drive output 1
2
H1+
3
H1-
5
H2+
8
H3+
6
H2-
9
H3-
7
VH
18
EC
17
10
ECR
S/S
16
Vcc
20
PCI
13
BRK
11
TSDF
12 FG
1 PG
26 A3
27 A2
28 A1
22 CS1
21 VM
15
SG
ER
EA
VTL
EP=ER x EA
FG
COMPARATOR
+   -
MATRIX HALL AMPLIFIER
DETE-
CTION
DIRECTION
DETECTION
DIRECTION SWITCHING
UPPER-SIDE
DISTRIBUTION
AMPLIFICATION
AMPLIFICATION
LOWER-SIDE
DISTRIBUTION
HALL BIAS
LOGIC
ABSOLUTE
VALUE
START/
STOP
THERMAL
PROTECTION
CIRCUIT
BREAK
CIRCUIT
Figure 49 BLOCK DIAGRAM OF IC
DX-SX1H
– 50 –
CTL1
CTL2
CH1
CH2
CH3
CH4
CH5
IC506  VHiBA6796FP-1: Loading/Focus/Tracking/Spin/Sled Driver (BA6796FP)
Note 1: Positive output/negative output means polarity toward input. (Ex. 18 pin output 'H' in case of 19 pin input 'H')
Note 2: Tray positive output/tray negative output means polarity toward mode. (Ex. 11 pin output 'H' in case of the forward mode)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Pin
No.
Terminal
Name
Function
Pin
No.
Terminal
Name
Function
1*
OPOUT
Operational amplifier output terminal
15
CH2-OUT-
CH2 negative output terminal
2
CH4-IN
CH4 input terminal
16
CH2-OUT+
CH2 positive output terminal
3*
CH4-IN'
CH4 gain adjustment input terminal
17
CH1-OUT-
CH1 negative output terminal
4
CTL1
Control 1 input terminal
18
CH1-OUT+
CH1 positive output terminal
5
CTL2
Control 2 input terminal
19
CH1-IN
CH1 input terminal
6
FWD
Tray forward input terminal
20
CH1-IN'
CH1 gain adjustment input terminal
7
REV
Tray reverse input terminal
21
VCC
VCC
8
TRAY-IN
Tray input terminal
22
CH2-IN
CH2 input terminal
9
GND
Substrate GND
23*
CH2-IN'
CH2 gain adjustment input terminal
10
CH5-OUT-
Tray negative output terminal
24*
CH3-IN
CH3 input terminal
11
COM-OUT
Tray positive terminal/CH4 negative output terminal
25*
CH3-IN'
CH3 gain adjustment input terminal
12*
CH4-OUT+
CH4 positive output terminal
26
VREF-IN
Bias amplifier input terminal
13*
CH3-OUT+
CH3 positive output terminal
27*
OPIN+
Operational amplifier non-inversion input terminal
14*
CH3-OUT-
CH3 negative output terminal
28*
OPIN-
Operational amplifier inversion input terminal
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CH2-OUT
CH1-OUT
CH1-IN
CH2-IN
CH3-IN
10K
10K
13.3K
13.3K
13.3K
10K
+
-
VCC
D
D
D
D
D
D
D
D
D
V/I
T.S.D
26.6K
10K
CTL1
CTL2
PWD
REV
LOGIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CH4-IN
CH5-IN
CH5-OUT CH4-OUT CH3-OUT
+
-
+
-
+
-
+
-
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFT
Figure 50 BLOCK DIAGRAM OF IC
Mode Switching Table
For CTL1 and CTL2
L
L
OFF
ON
L
H
H
L
ON
OFF
H
H
OFF
ON
OFF
ON
Note: Output: high impedance in case of OFF.
For F and R (CH5 control is effective only in case of ON)
F
R
Output Mode
L
L
High impedance
L
H
Reverse
H
L
Forward
H
H
Break
DX-SX1H
– 51 –
IC602 RH-iX1474GEZZ: SACD Data Processor (IX1474GE) (1/2)
1
DPCKI
Input
Signal processing reference clock input
0.5 - 3.3Vpp, feedback resistor built in.
2
DVDD3
Digital power supply (3.3V)
For logic cell
3
SVCKI
Input
Servo reference clock input (Oscillation circuit input terminal)
3.3V-I/F feedback resistor built in
4*
SVCKO
Output
Servo reference clock input (Oscillation circuit input terminal)
5
DVSS
Digital power supply (0V)
For logic cell
6
DVDD3
Digital power supply (3.3V)
For logic cell
7*
NC
The use forbidden
Open
8
HDWT
Input
MPU write signal
Level TTL
9
HDRD
Input
MPU read signal
Level TTL
10
HCEN
Input
MPU chip select
Level TTL
11-18
HD0-HD7
Input/Output MPU data bus
Level TTL
19
DVSS
Digital power supply (0V)
For I/O cell
20
DVDD5
Digital power supply (5V)
For I/O cell
21
HINT
Output
MPU interrupt signal (Occurrence of interruption = "L")
OPEN DRAIN
22,23
HA0, HA1
Input
MPU address bus
Level TTL
24
PLCK
Output
Read channel clock output terminal
25*-31* ED0-ED6
For default adjustment; use by user is forbidden. (NC)
Open
32
ED7
Output
SACD 2 binary data
33
TEST
Input
For default adjustment
Set to "L".
34
PDON
Output
PLL phase error signal output (Polarity: -)
35
PDOP
Output
PLL phase error signal output (Polarity: +)
36
RLLD
Output
PLL detection result output
37
LPFN
Input
Inversion input of amplifier for PLL loop filter
38
LPFO
Output
Output of amplifier for PLL loop filter
39
VCOF
Output
VCO filter terminal
40
SCLO
Output
Reference voltage output terminal of built-in comparator
41
AVSS
Analog power supply (0V)
42
AVR
Output
Non-PLL analog reference potential (1.65V)
43
VRC
Resistance dividing point potential
(For generating analog reference potential: 1.65)
44
PVR
Output
PLL analog reference potential (1.65V)
45
AVDD
Analog power supply (3.3V)
46
RVR2
Secondary reference voltage (For connecting capacitor)
47
RVDD
Dedicated power terminal (3.3V)
48
RFIN
Input
RF signal input
49
RVSS
Dedicated power terminal (0V)
50
RVR1
The first reference voltage (For connecting capacitor)
51
DVR
Input
DMO reference potential (1.65V recommended)
52
DMO
Output
DVD disc equalizer output (Ternary PWM + Hiz)
53
RASN
Output
External RAM column address select (Negative logic)
54
CASN
Output
External RAM row address select (Negative logic)
55
MOEN
Output
External RAM output enable signal
56
MWEN
Output
External RAM read/ write select
57
DVSS
Digital power supply (0V)
For logic cell
58
DVDD3
Digital power supply (3.3V)
For logic cell
59-68
MA9-MA0
Output
External RAM address bus
69
DVSS
Digital power supply (0V)
For I/O cell
70
DVDD5
Digital power supply (5V)
For I/O cell
71-78
MD7-MD0
Input/Output External RAM data bus
Level TTL
79-82
SD7-SD4
Output
MPEG data output
83
DVSS
Digital power supply (0V)
For logic cell
Pin No.
Terminal
Name
Input/Output
Function
Remarks
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
DX-SX1H
– 52 –
IC602 RH-iX1474GEZZ: SACD Data Processor (IX1474GE) (2/2)
84
DVDD3
Digital power supply (3.3V)
For logic cell
85-88
SD3-SD0
Output
MPEG data output
89
SERR
Output
MEPG data reliability flag (Data error = "L")
90
SBGN
Output
MEPG output sector synchronous signal (Sector head = "L")
91
SENB
Output
MEPG data effective flag (Effective = "L")
92
SDCK
Output
MEPG data transfer clock
93
DVSS
Digital power supply (0V)
For logic cell
94
SREQ
Input
MEPG data request flag (In case of request = "L")
Level TTL
95
RSTN
Input
Hard reset input (In case of reset = "L")
96
DVDD3
Digital power supply (3.3V)
For logic cell
97
STDA
Output
Status data output
98
STCK
Output
Status clock output
99
UPWM
Output
Universal PWM output
100
DVSS
Digital power supply (0V)
For logic cell
Pin No.
Terminal
Name
Input/Output
Function
Remarks
IC603 VHiSC514870SJ: 4Mbit DRAM (SC514870SJ)
Pin No.
Terminal Name
Function
10-13, 16-20, 9
A0-A8, A9R
Address input
8
RAS
Row address strobe
23
CAS
Column address strobe
2-5, 24-27
DQ1-DQ8
Data input/Data output
22
OE
Output enable
7
WE
Write enable
1
VCC
Power supply (5V)
15, 28
VSS
Ground (0V)
6*, 21*
NC
Not used
In this unit, the terminal with asterisk mark (*) is (open)
terminal which is not connected to the outside.
Figure 52 BLOCK DIAGRAM OF IC
Timing
Generator
Timing
Generator
Column
Address
Buffers
Internal
Address
Counter
Row
Address
Buffers
Refresh
Control Clock
Column
Decoders
Sense
Ampliliers
Write
Clock
Generator
I/O
Selector
Output
Buffers
Input
Buffers
Row
De-
coders
Word
Drivers
Memory
Cells
On Chip
Vcc Generator
RAS
CAS
A0 ~ A8
A9R
Vcc
Vcc
Vss
Vss
WE
OE
DO1 ~ DO8
9
9
1
10
9
8
8
8
8
8
8
8
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