AIWA CDC-X207YU Repair Manual

IC, LA9241ML
Pin No. Pin NameI/ODescriptionPin No. Pin NameI/ODescription
For the connection of the pickup photodiode. Addition to the FIN1 pin creates an RFThe HFL (high frequency level) signal is used to judge whether the main beam is
1FIN2O37HFLO
signal and subtraction from it create an EF signal.positioned on the pit or on the mirror.
2FIN1OFor the connection of the pickup photodiode.38SLOFISled servo off control input.
For the connection of the pickup photodiode. Subtraction from the F pin creates a TE39CV-ICLV error signal input from the DSP.
3EO
signal.40CV+
4FOFor the connection of the pickup photodiode.41RFSMORF output.
5TBIInputs the DC components in the TE signal.Sets the RF gain and the EFM singal's 3T compensation constant togther with the
42RFS-O
For the connection of a resistor which sets the gain of the TE signal between this pinRFSM pin.
6TE-O
and the TE pin.The SLC (slice level control) signal is output to control the DSP's data slice level of the
43SLCO
7TEOTE signal output.RF waveform.
8TESIITES (track error sense) comparator input. The signal is passed through a BPF.44SL1IInput to control the DSP's data slice level.
9SCIIShock detection input.45D-GND-Ground of digital signals.
10THISets the time constant for the tracking gain.46FSCOOutput for the focus search smoothing capacitor.
11TAOTA amp output.47TBCIThe TBC (tracking balance control) signal sets the EF balance variation range.
12TD-IComposes the tracking phase compensation constant between the TD and VR pins.48NC-Not connected.
13TDISets the tracking phase compensation.49DEFODisc defect detection output.
14JPISets the amplitude of the tracking jump signal (kick pulses).50CLKIReference clock input. 4.23 MHz is input from the DSP.
15TOOTracking control signal output.51CLIMicroprocessor command clock input.
16FDOFocusing control signal output.52DATIMicroprocessor command data input.
17FD-IComposes the focusing phase compensation constant between the FD and FA pins.53CEIMicroprocessor chip enable input.
18FAOComposes the focusing phase compensation constant between the FD and FA pins.54DRFODRF (detect RF) is an output to detect the RF level.
19FA-IComposes the focusing phase compensation constant between the FD and FA pins.The FSS (focus search select) signal switches the focus search modes (+/-search /
55FSSI
20FEOFE signal output.+search with respect to the reference voltage). (Not connected)
For the connection of a resistor whichs sets the gain of the FE signal between this pin56VCC2-VCC of servo and digital circuits.
21FE-I
and the TE pin.57REF1-For the connection of bypass capacitor for the reference voltage.
22A-GNDOGround of analog signals.58VROReference voltage output.
23SPOSingle-ended output of the signals input to the CV+ and CV- pins.59LF2-Sets the time constant for disc defect detection.
24SPIISpindle amp input.60PH1-For the connection of a capacitor to hold the RF signal peak.
25SPGIFor the connection of a resistor which sets the gain in the spindle 12cm mode.61BH1-For the connection of a capacitor to hold the RF signal bottom.
26SP-IFor the connection of the spindle phase compensation constant with the SPD pin.62LDDOAPC circuit output.
27SPDOSpindle control signal output.63LDSIAPC circuit input.
28SLEQIFor the connection of sled phase compensation constant.64VCC1-VCC of RF signal circuits.
29SLDOSled control signal output.
30SL-
ISled feed signal input from the microprocessor.
31SL+
32JP-
ITracking signal input from the DSP.
33JP+
34TGLITracking gain control signal input from the DSP. Low gain when TGL is "H".
35TOFFITracking off control signal input from the DSP. Off when TOFF is "H".
36TESOOutputs the TES signal to the DSP.
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