Samsung SV-DVD50 Service Manual page 111

(3) Program SW Input
The mechanism state for each mode is shown in table 7-1 below. The mechanism state is classified into position,
and correlation between the switch position and mechanism state is shown in table 7-1, also.
POSION
STANBY
POWER OFF
LOADING START
LOADING END
REV
PLAY
STOP 1
STOP 2
FF/REW 1
FF/REW 2
(4) Motor Control
In case of Scorpio-2 Deck, Loading Motor Drive IC lies in Capstan Motor, not like Scorpio-1 Deck.
In detail, Capstan Motor Drive IC is designed to drive Loading Motor + Capstan Motor + Cylinder Motor in one
IC.
Table 7-1 : Prog. SW State in Each Mode
CAM S/W
A B C
0 0 0
0 0 0
0 0 0
1 0 1 1
1 1 0
0 1 0
0 0 1
0 0 1
1 0 0
0 1 1
Table 7-2 : Motor Control Logic
CN604-PIN10
0 ~ 1V
2 ~ 3V
4 ~ 5V
START
ACTION MODE
SEN
0 Eject
1 Unload POWER OFF
1 (Tape loading start point)
1 (Tape loading end point)
X Reverse picture search, reverse SLOW
X Play, Rec, F-PS, Still, SLOW, F-ADV
1 Stop (Play position 5 Min. over)
X (MAIN Break ON MODE)
X High speed Rew, Low speed FF
X High speed FF, Low speed Rew
MOTOR
Reverse
Stop
Forward
Circuit Operating Descriptions
7-9