6-14. Ic Pin Function Description - Sony HCD-F50 Service Manual

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6-14. IC PIN FUNCTION DESCRIPTION

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BD BOARD IC101 LA9240M (FOCUS/TRACKING/SLED SERVO)
Pin No. Pin Name
1 FIN2
2 FIN1
3 E
4 F
5 TB
6 TE–
7 TE
8 TESI
9 SCI
10 TH
11
TA
12 TD–
13 TD
14 JP
15 TO
16 FD
17 FD–
18 FA
19 FA–
20
FE
21 FE–
TE
22 AGND
L 13942296513
23 SP
24 SPI
25 SPG
26 SP–
27 SPD
28 SLEQ
29 SLD
30 SL–
31 SL+
32 JP–
33 JP+
34
TGL
35 TOFF
36 TES
37
HFL
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I/O
Connected to the pick-up photodiode
I
Added with FIN1 to create RF signal, subtracted with FIN1 to create FE signal
I Connected to the pick-up photodiode
Connected to the pick-up photodiode Subtracted with F to create TE signal
I
I Connected to the pick-up photodiode
I DC component of the TE signal is input
Connects the TE signal gain setting resistor between TE pins
I
O TE signal output
TES (Track Error Sense) comparator input. The TE signal is band-passed and input
I
I Shock detection input
I Tracking gain time constant setting
TA amplifier output
O
I Creates a tracking phase compensation constant between TD and VR pins
O Tracking phase compensation setting
Tracking jump signal (kick pulse) amplitude setting
I
O Tracking control signal output
O Focusing control signal output
Creates a focusing phase compensation constant between FD and FA pins
I
O Creates a focusing phase compensation constant between FD- and FA- pins
I Creates a focusing phase compensation constant between FA and FE pins
FE signal output
O
I Connects the FE signal gain setting resistor between TE pins
Analog signal Ground
–
Single end output of CV+ and CV- pin signal
O
I Spindle amplifier input
I Gain setting resistor is connected when the spindle 12cm mode
Works together with the SPD pin to connect to the spindle phase compensation constant
I
O Spindle control signal output
I Sled phase compensation constant is connected
O Sled control signal output
I Sled feeding signal is input from the microprocessor
Sled feeding signal is input from the microprocessor
I
I Tracking jump signal is input from the DSP
I Tracking jump signal is input from the DSP
Tracking gain control signal is input from the DSP Gain becomes low when TGL is "H"
I
Tracking off control signal is input from the DSP
I
Tracking becomes off when TOFF is "H"
Outputs TES signal to the DSP
O
HFL (High Frequency Level) is used to determine whether the main beam is positioned
O
on a pit or a mirror
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Function
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