Waveforms; Ic Pin Function Description - Sony HCD-F250AV Service Manual

HCD-F250AV

6-25. WAVEFORMS

– MAIN Section –
1 3
IC501 0 (X2) IC501 (¡ (CLK-OUT)
5.5Vp-p
32.768 kHz
5 MHz
2 4
IC501 !£ (XT2) IC401 #¡ (EXTAL)
32.768 kHz 10 MHz
4.8Vp-p
– BD Section –
4 IC103@¶ (MDP)
1 IC101#£ (RFO) (PLAY MODE)
1.3 Vp-p
5 IC103^º (XPCK)
2 IC1012 (FEI) (PLAY MODE)
0.5 Vp-p
3 IC101$¶ (TEI) (PLAY MODE) 6 IC103^™ (RFCK)
0.2 Vp-p
– PANEL Section –
5
IC601 8 (X-OUT)
5.0Vp-p
8MHz 4.2Vp-p
3.6Vp-p
7 IC103&¢ (WFCK)
2.5 Vp-p
135 µ s
7.8 µ s
8 IC103*ª (XTAI)
5 Vp-p
16.9344 MHz
230 µ s
5 Vp-p
135 µ s
— 75 —

6-26. IC PIN FUNCTION DESCRIPTION

BD BOARD IC101 LA9240M
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–
22 AGND
5 Vp-p
23 SP
24 SPI
25 SPG
26 SP–
27 SPD
28 SLEQ
29 SLD
30 SL–
31 SL+
32 JP–
33 JP+
2.6 Vp-p
34 TGL
35 TOFF
36 TES
37 HFL
I/O Function
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
I Connected to the pick-up photodiode Subtracted with F to create TE signal
I Connected to the pick-up photodiode
I DC component of the TE signal is input
I Connects the TE signal gain setting resistor between TE pins
O TE signal output
I TES (Track Error Sense) comparator input. The TE signal is band-passed and input
I Shock detection input
I Tracking gain time constant setting
O TA amplifier output
I Creates a tracking phase compensation constant between TD and VR pins
O Tracking phase compensation setting
I Tracking jump signal (kick pulse) amplitude setting
O Tracking control signal output
O Focusing control signal output
I Creates a focusing phase compensation constant between FD and FA pins
O Creates a focusing phase compensation constant between FD- and FA- pins
I Creates a focusing phase compensation constant between FA and FE pins
O FE signal output
I Connects the FE signal gain setting resistor between TE pins
— Analog signal Ground
O Single end output of CV+ and CV- pin signal
I Spindle amplifier input
I Gain setting resistor is connected when the spindle 12cm mode
I Works together with the SPD pin to connect to the spindle phase compensation constant
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
I Sled feeding signal is input from the microprocessor
I Tracking jump signal is input from the DSP
I Tracking jump signal is input from the DSP
I Tracking gain control signal is input from the DSP Gain becomes low when TGL is "H"
Tracking off control signal is input from the DSP
I
Tracking becomes off when TOFF is "H"
O Outputs TES signal to the DSP
HFL (High Frequency Level) is used to determine whether the main beam is
O
positioned on a pit or a mirror
— 76 —