Sanyo DC-M3, Service Manual

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IC BLOCK DIAGRAM & DESCRIPTION
No. Pin Name I/O Function
1 FIN2 I Connection Pin for Photo Diode of Pickup.
2 FIN1 I FIN2 + FIN1 = RF, FIN2 - FIN1 = FE
3 E I Connection Pin for Photo Diode of Pickup.
4 F I E - F = TE
5 TB I Input Pin for DC ingredient of TE Signal.
6 TE- I Connection Pin for Gain Setting Resistor of TE
Signal to TE Signal Pin.
7 TE O Output Pin for Tracking Error Signal.
8 TESI I Input Pin for Track Error Sense Comparator.
TE Signal through Band Pass, and Inputted.
9 SCI I Input Pin for Shock Detection.
10 TH I Connection Pin for Time Constant Setting of
Tracking Gain.
11 TA O Output Pin for TA Amplifier.
12 TD- I Connection Pin for Constant Tracking Phase
Compensation, Consist of between TD and VR.
13 TD I Connection Pin for Constant of Tracking Phase
Compensation.
14 JP I Connection Pin for Amplitude Setting of Tracking
Jump (Kick Pulse) Signal.
15 TO O Output Pin for Tracking Control Signal.
16 FD O Output Pin for Focusing Control Signal.
17 FD- I Connection Pin for Constant of Focusing Phase
Compensation, Consist of between FD and FA.
18 FA+ I Connection Pin for Constant of Focusing Phase
Compensation, Consist of between FD- and FA-.
19 FA- I Connection Pin for Constant of Focusing Phase
Compensation, Consist of between FA and FE.
20 FE O Output Pin for Focusing Error Signal.
21 FE- I Connection Pin for Gain Setting Resistor of FE
Signal to FE Signal Pin.
22 AGND - Ground for Analog Signal.
No. Pin Name I/O Function
23 SP O Output Pin for Single End of Input Signal of the
CV+, CV- Pin.
24 SPI I Input Pin for Spindle Amplifier.
25 SPG I Connection Pin for Gain Setting Resistor, when
Spindle 12 cm Mode.
26 SP- I Connection Pin for Constant of Spindle Phase
Compensation with SPD Pin.
27 SPD O Output Pin for Spindle Control Signal.
28 SLEQ I Connection Pin for Constant of Sled Phase
Compensation.
29 SLD O Output Pin for Sled Control Signal.
30 SL- I Input Pin for Sled Signal from Micro Processor.
31 SL+ I
32 JP- I Input Pin for Tracking Jump Signal from Digital
33 JP+ I Signal Processor.
34 TGL I Input Pin for Tracking Gain Control Signal from
Digital Signal Processor. TGL = H : Gain Low
35 TOFF I Input Pin for Tracking Off Control Signal from Digital
Signal Processor. TOFF = H : OFF
36 TES O Output Pin for Track Error Sense Signal to Digital
Signal Processor.
37 HFL I High Frequency Level Signal Use Detection
Main-Beam Position is on the pit or mirror.
38 SLOF I Input Pin for Sled Servo Off Control.
39 CV- I Input Pin for Constant Linear Velocity Error
40 CV+ I Signal from Digital Signal Processor.
41 RFSM O Output Pin for RF Signal.
42 RFS- I Connection Pin for Gain Setting of RF and
Constant Setting of 3T Compensation of the
EFM Signal with RFSM Pin.
43 SLC O Slice Level Control Signal is Output Pin.
It Control Level of Data-Slice by Digital Signal
Processor of the RF Waveform.
44 SLI I Input Pin for Level Control of Data-Slice by
Digital Signal Processor.
45 DGND - Ground for Digital Signal.
46 FSC O Output Pin for Focus Search Smooth Condenser
47 TBC O Connection Pin for Variable Range Setting of
EF Balance.
48 NC - No Connect
49 DEF O Output Pin for Defect Detection of Disc.
50 CLK I Input Pin for Reference Clock Pulse.
(4.23 MHz of Digital Signal Processor)
51 CL I Input Pin of Clock Pulse for Command from
Micro Processor.
52 DAT I Input Pin of Data for Command from Micro
Processor.
53 CE I Input Pin of Chip Enable for Command from Micro
Processor.
54 DRF O Output Pin for Detect of RF Level.
55 FSS I Select Pin for Focus Search Mode
56 VCC2 - VCC for Servo and Digital Root.
57 REFI I Bus Control Connection Pin for Reference Voltage.
58 VR O Output Pin for Reference Voltage.
59 LF2 I Connection Pin for Time Constant Setting of
Detect Detection of the Disc.
60 PH1 I Capacitor Connection Pin for Peak-hold of RF Signal.
61 BH1 I Capacitor Connection Pin for Bottom-hold of
RF Signal.
62 LDD O Output Pin of APC (Automatic Power Control) Circuit.
63 LDS I Input Pin of APC (Automatic Power Control) Circuit.
64 VCC1 I VCC for RF Root.
IC101 LA9241ML (Servo Signal Processor)
FSS
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
47
46
45
44
43
41
40
39
38
37
36
35
34
33
42
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Vcc1 LDS LDD BH1 PH1 LF2 VR REF1 Vcc2 DRF CE DAT CL CLK DEF
NC
TBC
FSC
DGND
SLI
SLC
RFS-
RFSM
CV+
CV-
SLOF
HFL
TES
TOFF
TGL
JP+
JP- SL+ SL- SLD SLEQ SPD SP- SPG SPI SP AGND FE- FE FA- FA FD-
FD
TO
JP
TD
TD-
TA
TH
SCI
TESI
TE
TE-
TB
F
E
FIN1
FIN2
APC
RF DET
REF
VCA
I/V
BAL VCA
INTER FACE
˚-com
SLC
RF Amp
TE
T.SERVO & T.LOGICK
F.SERVO & F.LOGICK
SPINDLE SERVO
SLED SERVO