Sanyo DC-C70 Service Manual page 20

IC BLOCK DIAGRAM& DESCRIPTION
ICI 01 LA9240ML (Servo Signal Processor)
~o. Pin Name I/o
Function No. Pin Name Uo Function
1 FIN2 I Connection Pin for Photo Diode of Pickup.
34 TGL I Input Pin for Tracking Gain Control Signal from
2 FIN1 I FIN2 + FIN1 = RF, FIN2 - FIN1 = FE Dgital Signal Prcxessor. TGL. H : Gain Low
3 E I Connection Pin for Photo Dtie of P&up.
s TOFF I Input Pin for Tracking Off Control Signal from Digital
4 F I E- F=TE
Signal Processor. TOFF. H: OFF
5 TB
1 Input Pin for DC ingredient of TE Signal. 38 TES o Output Pin for Track Error Sense Signal to Digital
6 TE- 1 Camction Pin for Gain Setting Resistw of TE Signal Prccessor.
Sgnal to TE Signal Pin.
37
HFL I High Frequency Level Signal Use Detection
7 TE
o
Output Pin for Tracking Error Signal. Main-Beam Position is on the pit or mirror.
8
TESI
I Input Pin for Track Error Sense Comparator. 28 SLOF 1 Input Pin for Sled Servo Off Control.
TE Signal through Band Pass, and Inputted. 3 cv- 1 Input Pin for Constant Linear Velocity Error
9 Scl 1 Input Pin for Shock Detection.
40 Cv+
I
Signal from Digital Signal Processor.
10 TH I Connection Pin for Time Constant Setting of
41 RFSM
o
Output Pin for RF SignaL
Tracking Gain. 42 RFS- 1 Connection Pin for Gain Setting of RF and
11 TA o Output Pin for TA Amplifier. Constant Setting of 3T Compensation of the
12 TD- 1 Connection Pin for Constant Tracking Phase EFM Signal with RFSM Pin.
Compensation, Consist of between TD and VR.
43 SLC o Slice Level Control Signal is Output Pin.
13 TD I Connection Pin for Constant of Tracking Phase It Control Level of Data-Slice by Digtil Signal
Compensation. Prccessor of the RF Waveform.
14 JP I Connection Pin for Amplitude Setting of Tracking 44 SLl
I Input Pin for Level Control of Data-Slice by
Jump (Kick Pulse) Signal. Digital Signal Processor.
15 TO
o
Output Pin for Tracking Control Signal.
45
DGND - Ground for Digital .SJgnal.
16 FD
o Output Pin for Focusing @ntrol signal. 46 FSC
o
Output Pin for Focus Search Smooth Condenser
17 FD- 1 Connection Pin for Constant of Focusing Phase 47 TBC o Connection Pin for Variable Range Setting of
Compensation, Consist of between FD and FA. EF Balance.
18 FA+ I Connection Pin for Constant of Fccusing Phase
46
NC - No Connect
Compensation, Consist of between FD- and FA-. 49 DEF
o
Output Pin for Defect Detection of Disc.
19 FA- 1 Connection Pin for Constant of Focusing Phase
50 CLK
I Input Pin for Referemx Clock Pulse.
Compensation, Consist of between FA and FE. (4.23 MHz of Digital Signal Processor)
a FE
o
Output Pin for Focusing Error Signal. 51 CL I Input Pin of Clock Pulse for C=ommand from
2t FE- 1 Connection Pin for Gain Setting Resistor of FE Micro Processor.
Sgnal to FE Signal Pin. Q DAT I Input Pin of Data for Command from Micro
Z? AGND
- Ground for Analog Signal.
Processor.
23 SP o Oaf@ Pin for Single End of Input Signal of the 53 CE I Input Pin of Chip Enable for Command from Micro
CV+, CV- Pin. Processor.
24
SPI I Input Pin for Spindle Ampliier. 54 DRF o Outp uf Pin for Detect of RF Level.
25 SPG I Connection Pin for Gain Setting Resistor, when E6 FSS I Select Pin for Focus Search Mwfe
Spindle 12 CM Mode.
58
VCC2 - VCC for Servo and Digital Root.
26 sP- 1 Connection Pin for Constant of Spindle Phase 57 REFI I Bus Control Connection Pin for Reference Voltage.
Compensation with SPD Pin. 56 VR o Output Pin for Reference Vottage.
27
SPD o Outpul Pin for Spindle Control SignaL 54 LF2 I Connection Pin for Time Constant Setting of
28
SLEQ
I Connection Pin for Constant of Ski Phaae
Detect Detection of the Disc.
Compensation. 60 PH1 I Capacitor Connection Pin for Peak-hold of RF Signal.
29 SLD o Output Pin for Sled Control Signal. 61 BH1 I Capacitor Connection Pin for Bottofn-hofd of
m SL- 1 Input Pin for Sled Sgnal from Micro Processor. RF Signal.
31 SL+ I
&?
LDD
o Output Pin of APC (Automatic Power Control) Circuit.
32 JP- 1 Input Pin for Tracking Jump Signal from Digital
m LDS I Input Pin of APC (Automatic Power Control) Circuit.
33 JP+ I Signal Processor. w Vccl I VCC for RF Root.
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