Sony AVD-S50, Service Manual

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AVD-S50/S50ES
• DVD BOARD IC902 PT8300 (CHANGER CONTROLLER (MOTOR, SWITCH))
Pin No. Pin Name I/O Pin Description
1 VSS — Ground terminal
2 RESET B I Reset signal input from the system controller “L”: reset
3 CLK I Serial data transfer clock signal input from the system controller
4 LATCH I Serial data latch pulse signal input from the system controller
5 OUTSW I CDM tray open detect switch input terminal “L”: active
6 INSW I CDM tray close detect switch input terminal “L”: active
7 P13 I Disc in (8/12cm) detect switch input terminal “L”: play position Not used. (Open)
8 P12 I Disc in (12cm) detect switch input terminal “L”: play position Not used. (Open)
9 P11 I
Stocker in/out detect switch input terminal “L”: in the midst disc is moving between
play position and stocker except the moment disc in/out from stocker Not used. (Open)
Disc position detect switch input terminal Not used. (Open)
10 P10 I “L”: disc is play position side in the midst disc is moving between play position and stocker
“H”: disc is stocker side in the midst disc is moving between play position and stocker
11 P9 I
Disc out detect switch input terminal “H”: disc out from play position
Not used. (Open)
12 P8 I
Stocking detect switch input terminal Not used. (Open)
“H”: in the midst disc is moving between play position and stocker
13 LATCHO O
Serial data latch pulse signal output to the changer controller (rotary encoder)
Not used. (Open)
14 CLKO O
Serial data transfer clock signal output to the changer controller (rotary encoder)
Not used. (Open)
15 DO1 O Serial data output to the changer controller (rotary encoder) Not used. (Open)
16 DI2 I Serial data input terminal Not used. (Fixed at “L” in this set.)
17 TRMP O CDM tray left-roulette signal output “H”: active
18 TRMM O CDM tray right-roulette signal output “H”: active
19 V SEL2 O Video select 2 signal output
20 V SEL1 O Video select 1 signal output
21 V SEL0 O Video select 0 signal output
22 A SEL2 O Audio select 2 signal output
23 A SEL1 O Audio select 1 signal output
24 A SEL0 O Audio select 0 signal output
25 DO2 O Serial data output to the changer controller (rotary encoder)
26 DI1 I Serial data input from the system controller
27 PULLUP — Connected to power supply (+5 V)
28 VCC — Power supply terminal (+5 V)