Test Mode - Sharp MD-M3 Service Manual

CD MECHANISM SECTION
For details about the procedure to remove the CD mechanism
from the main unit, refer to Disassembly Procedure, Steps 1
,11 in the main unit and also the CD section. (p.11,12).
How to remove the optical pickup
(See Fig. 15-1.)
1. Remove the mechanism cover, paying attention to the
pawls (A1)x 4 pcs.
2. Remove the screws (A2)x 2 pcs., to remove shaft (A3)x 1
pc.
3. Remove stop washer (A4)x 1 pc., to remove the gear (A5)x
1 pc.
4. Remove the optical pickup.
Note:
After disconnecting the optical pickup connector wrap the
front end of connector in conductive aluminium foil to prevent
damage to the optical pickup by static electricity.
CD SECTION
CD test mode setting
Press and hold the CD and PLAY buttons, and then press the POWER button. -> Normal mode
Press and hold the CD and STOP buttons, and then press the POWER button. -> Hi-speed mode

test mode

• Each step in the operation is only possible when the LID switch is ON in the CD test mode.
However, when a focus is not obtained in step 3, or when an error is detected, you cannot go forward.
• When the unit enters the error-handling mode, press the POWER button to end the test mode or press the STOP
button so that any further operations are prohibited, except for returning to step 1.
• When the /
Flow chart in the CD test mode
•
Stop
Stop
Stop
Stop
Press the POWER button at any time to cancel the test mode. The unit will return to the normal operation mode in which the power
to the unit is turned off.
TEST MODE
button is pressed in steps 2 - 5, the pickup will be slid.
or less.
Entry
Step 1
Stop mode
Memory
Step 2
Laser output ON
Memory
Step 3
Focus search
Memory
Step 4
CLV ON
Memory
Step 5
Manual play
Step 6
Normal play
– 15 –
CD Cover
( A1 ) x4
Figure 15-1
Play
Play
Play
Play
Play
Stop
MD-M3/M1
( A2 ) x2
ø2.6 x6mm
CD Mechanism
Shaft
( A3 ) x1
Gear
( A5 ) x1
Stop Washer
( A4 ) x1
Optical Pickup