AIWA CDCX207YZ/YH Repair Manual

Pin No. Pin NameI/ODescription
The HFL (high frequency level) signal is used to judge whether the main beam is
37HFLO
positioned on the pit or on the mirror.
38SLOFISled servo off control input.
39CV-
ICLV error signal input from the DSP.
40CV+
41RFSMORF output.
Sets the RF gain and the EFM singal's 3T compensation constant togther with the
42RFS-O
RFSM pin.
The SLC (slice level control) signal is output to control the DSP's data slice level of the
43SLCO
RF waveform.
44SL1IInput to control the DSP's data slice level.
45D-GND-Ground of digital signals.
46FSCOOutput for the focus search smoothing capacitor.
47TBCIThe TBC (tracking balance control) signal sets the EF balance variation range.
48NC-Not connected.
49DEFODisc defect detection output.
50CLKIReference clock input. 4.23 MHz is input from the DSP.
51CLIMicroprocessor command clock input.
52DATIMicroprocessor command data input.
53CEIMicroprocessor chip enable input.
54DRFODRF (detect RF) is an output to detect the RF level.
The FSS (focus search select) signal switches the focus search modes (+/-search /
55FSSI
+search with respect to the reference voltage). (Not connected)
56VCC2-VCC of servo and digital circuits.
57REF1-For the connection of bypass capacitor for the reference voltage.
58VROReference voltage output.
59LF2-Sets the time constant for disc defect detection.
60PH1-For the connection of a capacitor to hold the RF signal peak.
61BH1-For the connection of a capacitor to hold the RF signal bottom.
62LDDOAPC circuit output.
63LDSIAPC circuit input.
64VCC1-VCC of RF signal circuits.
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