Sony HCD-J300 Service Manual page 22

HCD-J300
QQ
3 7 63 1515 0
MD SECTION
1. PRECAUTIONS FOR USE OF TEST MODE
• As operations related to loading will be performed regardless of the test mode operations being performed, be sure to check that the disc
is stopped before setting and removing it.
Even if the Z (MD) button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not
stop rotating.
Therefore, it will be ejected while rotating.
Be sure to press the Z (MD) button after pressing the
1-1. Recording laser emission mode and operating buttons
• Continuous recording mode (CREC 1MODE)
• Laser power check mode (LDPWR CHECK)
• Laser power adjustment mode (LDPWR ADJUST)
• Comparison with initial Iop value written in nonvolatile memory (Iop Compare)
• Write current Iop value in read nonvolatile memory using microprocessor (Iop NV Save)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUST)
• When pressing the z MD button.
2. SETTING THE TEST MODE
The following are two methods of entering the test mode.
Procedure : 1. Press the
? / 1
[FUNCTION]
2. Press the
3. Press three buttons of
When the test mode is set, "[Check]" will be displayed. Pressing the
groups; ···Tt [Check] Tt [Service] Tt [Develop] Tt ···.
Note: Do not use the test mode in the [Develop] group.
If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the MENU/NO "R" button immediately to exit the [Develop] group.
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L 13942296513
3. RELEASING THE TEST MODE
[REPEAT STEREO/MONO]
Press the
4. BASIC OPERATIONS OF THE TEST MODE
All operations are performed using the
The functions of these buttons are as follows.
Function name
. "R" , > "R" buttons
ENTER/YES "R" button
MENU/NO "R" button
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MENU/NO "R"
button to turn the power on.
button to set the MD function.
(MD), m (TAPE), and
x
button twice to display "Initialize", then release the MD test mode.
. "R" , > "R" , ENTER/YES "R"
Function
Changes parameters and modes
Proceeds onto the next step. Finalizes input
Returns to previous step. Stops operations
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y
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button and the rotation of disc is stopped.
[SYNCHRO REC]
simultaneously.
or
. "R" >
Q Q
3 6 7 1 3
and MENU/NO "R"
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2 9 9 4 2 8
button between the following three
"R"
1 5 0 5 8 2 9 9 4
.
m
co
9 9
2 8 9 9