Sharp CD-C605H, Service Manual

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CD-C605H
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IC1 VHiLA9241M/-1: Servo Amp. (LA9241M) (1/2)
1 FIN2 Connection pin for photodiode of pickup.
RF signal is generated through addition with FIN pin, and FE signal is generated through subtraction.
2 FIN1 Connection pin for photodiode of pickup.
3 E Connection pin for photodiode of pickup. TE signal is generated through subtraction with F pin.
4 F Connection pin for photodiode of pickup.
5 TB Pin for input of DC component of TE signal.
6 TE- Pin to connect gain setting resistor of TE signal to TE signal.
7 TE TE signal output pin.
8 TESI TES (Track error sense) comparator input pin. TE signal is band-passed and input.
9 SCI Input pin for shock detection.
10 TH Pin to set time constant of tracking gain.
11* N.C. No connect.
12 TD- Pin to compose tracking phase compensation constant between TD and VR pins.
13 TD Pin to set tracking phase compensation.
14 JP Pin to set amplitude of tracking jump signal (kick pulse).
15 TO Tracking control signal output pin.
16 FD Focusing control signal output pin.
17 FD- Pin to compose focusing phase compensation constant between FD and FA pins.
18 FA Pin to compose focusing phase compensation constant between FD-/FA-pins.
19 FA- Pin to compose focusing phase compensation constant between FA and FE pins.
20 FE Output pin of FE signal.
21 FE- Pin to connect gain setting resistor of FE signal across TE pin.
22 AGND GND for analog signal.
23 SP Single end output for CV+ and CV- pin input.
24 SPI Spindle amplifier input.
25 SPG Pin to connect gain setting resistor in the 12cm mode of spindle.
26 SP- Pin to connect spindle phase compensation constant together with SPD pin.
27 SPO Spindle control signal output pin.
28 SLEO Pin to connect thread phase compensation constant.
29 SLD Thread control signal output pin.
30 SL- Input pin of thread feed signal from microcomputer.
31 SL+ Input pin of thread feed signal from microcomputer.
32 JP- Input pin of tracking jump signal from DSP.
33 JP+ Input pin of tracking jump signal from DSP.
34 TGL Input pin of tracking gain control signal from DSP. TGL = Gain low at "H"
35 TOFF Input pin of tracking off control signal from DSP. TOFF = Off at "H"
36 TES Output pin of TES signal to DSP.
37 HFL (HIGH FREQUENCY LEVEL) is used to judge whether main beam is positioned on the bit or on the mirror.
38 SLOF Thread servo off control input pin.
39 CV- Pin to input CLV error signal from DSP.
40 CV+ Pin to input CLV error signal from DSP.
41 RFSM RF output pin.
42 RFS- Pin to set gain of RF and set 3T compensation constant together with RFSM pin.
43 SLC (SLICE LEVEL CONTROL) is the output pin to control of the level of the data slice with RF waveform DSP.
44 SLI Input pin to control the level of data slice with DSP.
45 DGND GND pin in the digital system.
46 FSC Output pin for focus search smoothening capacitor.
47 TBC (Tracking Balance Control) Pin to set EF balance variable range.
48* NC No connect.
Pin No. Port Name Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
FUNCTION TABLE OF IC