DV-L88 (serv.man7). Test mode - Sharp DVD Service Manual (repair manual). Page 3

1. Connect the DVD main unit and the computer as shown on the right. And then start-up the software for rewriting.
2. Turn on the power while the Skip/Forward key and the Volume Down key of the DVD main unit are kept pressed at the same time.

(Keep pressing about 3 second.)

The red LED flickers 5 - 6 times with the 0.5 second cycle and then the green LED flickers with 0.1 second cycle.

3. According to the computer display, data transfer prompt is issued by inputting “Y” and

pressing ENTER key, and when the rewriting starts normally,

The LED in green lights on from flickering.

4. When the rewriting is completed normally,

The green LED lights on.

5. After completing the rewriting and checking the display of No. 4 shown above,

always press the “RETURN” key. After that turn off the POWER.

6. Treatment in case of rewriting error

1

 The red LED flickers with 0.1 second cycle (When the stop key is pressed it

return to the condition of “2” so write again.)

2

 The red/green LED flickers by turns (When the stop key is pressed it becomes

the condition of “5” so write again from “1”.)

Personal computer

(DOS)

DVD itself

Connect to the video input 
terminal. 
Connect the “red” audio cable to jig.

Fixture for the ROM renewal