Pioneer XR-P270C Service Manual page 57

XR-P270C,XR-P170C
LA9240ML
gS
AGND
SFI
SPG i
Resistance connection pin for gain setting in 12-cm mode for spindle
Pin for connection of spindle phase compensation constant, as well as with the SPD pin.
Spindle control signal output pin
Thread control signal output pin
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Bales ia] a] | S| Q Zz
2
Pin for connection of thread phase compensation constant
Pin to input thread feeding signal from the microprocessor.
Pin to input thread feeding signal from the microprocessor.
Pin to input tracking jump signal from DSP.
Pin to input tracking jump signal from DSP.
Pin to input tracking gain control signal from DSP. Tracking is set to gain low when TGL is "H'".
Pin to input tracking OFF control signal from DSP. Tracking is OFF when TOFF is "H"
JP+
TGL
TOFF
34
35
SLOF
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RF output pin
Pin for RF gain setting and EFM signal 3T compensation constant setting, as well as with the RFSM pin
Slice Level Control. Output pin to control the level of data slice by DSP of RF waveforms
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3 22
+
x
Input pin to control the level of data slice by DSP.
GND pin of the digital system
Output pin for focus search smoothing capacitor.
Tracking Balance Control. Pin to set EF balance variable range.
DGND
Pin to output defect detection of disc
Reference clock input pin. Frequency of 4.23MHz is input from DSP.
Microprocessor command data input pin
Microprocessor command chip enable input pin.
Pin to connect capacitor for bottom hold of RF signal.
APC circuit output pin.
Microprocessor command clock input pin.
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LDD
APC circuit input pin
VCC pin for the RF system
BE
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F
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wa
VCCl
57