DV-560H (serv.man6). DVD Technical Manual (Based on the DV560H) - Sharp DVD Service Manual (repair manual). Page 32

Condition of working

When Tray 1 is manually inserted

Working Mode

Tray 1 Open 

_

 Tray 1 Close

SW2B

SW2A

LOAD ( + )

LOAD ( – )

*1. Point of loading to start with key operation
*2. Active point of SW2B
*3. Recognition time of SW2B”H”
*4. Switching point from high-speed mode to low-speed mode.
*5. Recognition time of SW2A”L”
*6. Short break time for loading motor (During this time, 100mS period after 50mS passes, overrun check for motor stop

position is performed.  If SW2A turns to “H” during this time, reverse pulse drive is operated.  When SW2A turns to “L”
again, it goes back to Break Mode.  This action will be repeated a maximum of 3 times.)

*7. Waiting time before moving to the next mode.

Condition of working

When Tray 1 is manually inserted

Working Mode

Tray 1 Open 

_

 Tray 1 Close

SW2B

SW2A

LOAD ( + )

LOAD ( – )

*1. Active point of SW2B by manual insert
*2. Recognition point of SW2B”H” (Starting point of loading)
*3. Recognition time of SW2A”L”
*4. Short break time for loading motor (During this time, 100mS period after 50mS passes, overrun check for motor stop

position is performed.  If SW2A turns to “H” during this time, reverse pulse drive is operated.  When SW2A turns to “L”
again, it goes back to Break Mode.  This action will be repeated a maximum of 3 times.)

*5. Waiting time before moving to the next mode.

∗ 

1

∗ 

2

∗ 

3

∗ 

4

∗ 

5

6ms
min.

14ms

150ms

100ms

6ms

∗ 

5

∗

 6

∗ 

7

∗ 

4

14ms

1200ms

150ms

100ms

6ms

∗ 

3

∗ 

1

∗ 

2