Sharp MD-DR470HS Service Manual page 9

1-bit portable minidisc recorder
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Test Mode
1. AUTO 1 Mode
• Perform preliminary automatic adjustment.
• If the combination of mechanism and pickup PWB
has been changed, be sure to start from AUTO1.
2. AUTO 2 Mode
• Perform ATT (attenuator) automatic adjustment.
• Perform continuous playback. (error rate display,
jump test.)
3. PLAY Mode
• Continuous playback from the specified address is
performed.
• 1 jump or 10 jumps and manual movement.
• C1 error rate display (pit section), ADIP error rate
display (groove section).
• The temperature correction is performed only when
servo start is performed, but the posture correction
is not performed during continuous playback.
4. REC Mode
• Continuous record from the specified address is
performed.
• Change of record laser output. (servo gain is also
changed according to laser output.)
• The temperature correction is performed only when
servo start is performed, but the posture correction
is not performed during continuous recording.
5. MANU 1 Mode
• Temperature is displayed.
• Seeing the displayed adjustment value, perform
preliminary manual adjustment.
(Error rate indication, jump test.)
Operation in each TEST mode
1. AUTO1 Mode
• When the STOP button is pressed while the AUTO1 menu appears
or during automatic adjustment, the mode changes to the TEST
mode stop state. At this time the adjustment value is not output.
• Be sure to adjust, using the specified disc MMD-213A.
• Adjustment NG; Adjustment item out of range, focus ON failure, and
adjustment error.
• When the PLAY button is pressed while ADJ. OK is displayed,
AUTO2 is executed.
2. AUTO2 Mode
• When the STOP button is pressed while the AUTO2 menu appears
or during automatic adjustment, the mode changes to the TEST
mode stop state. At this time the adjustment value is not output.
• Adjustment NG; Adjustment item out of range, and adjustment error.
• When the PLAY button is pressed while ADJ. OK is displayed,
TEST_PLAY is executed.
3. MANU1 Mode
• Adjustment item to be made in AUTO1 mode is performed manually.
• When the VOLUME + button is pressed during adjustment, the
setting increases, and the new setting is output.
• When the VOLUME – button is pressed during adjustment, the
setting decreases and the new setting is output.
• If the VOLUME +/– button is held down, the setting changes
continuously with 100 ms cycle.
*In this operation, the setting change is performed for each digit.
The digit is changed by pressing the REC button.
• If the setting is within the allowable range, the RND display lights.
• When the STOP button is pressed during MANU1 menu or measure-
ment or adjustment, the state is changed to the TEST mode stop
state.
4. MANU2 Mode
• Adjustment item to be made in AUTO2 mode is performed manually.
• When the VOLUME + button is pressed during adjustment, the
setting increases, and the new setting is output.
• When the VOLUME – button is pressed during adjustment, the
setting decreases and the new setting is output.
• If the VOLUME +/– button is held down, the setting changes
continuously with 100 ms cycle.
*In this operation, the setting change is performed for each digit.
The digit is changed by pressing the REC button.
• If the setting is within the allowable range, the RND display lights.
6. MANU 2 Mode
• Temperature is displayed.
• Seeing the displayed adjustment value, perform
ATT (attenuator) manual adjustment.
• Continuous playback is performed.
(error rate display, jump test.)
7. E_DATA display • Error information is displayed.
Mode
• Error information is initialized.
8. NORMAL Mode
• The mode is changed from the TEST mode to the
normal mode without adjustment.
• In the normal mode the internal operation mode,
memory capacity, etc. areindicated.
• In the normal mode both temperature correction
and posture correction are performed.
9. EEPROM Mode
• Factors of digital servo are changed manually.
• Cut-off frequency of BASS1, BASS2 and BASS3 is
changed manually.
• Temperature detection terminal voltage is
measured, and the reference value is set.
• Defaults are selected and set.
• Setting of EEPROM protect area is updated.
• When the STOP button is pressed during MANU2 menu or measure-
ment or adjustment, the state is changed to the TEST mode stop
state.
• When the PLAY button is pressed in B-ATT set state, the mode is
changed to the continuous playback mode.
• As for operation during continuous playback refer to "PLAY mode
explanation".
5. PLAY Mode
• When the STOP button is pressed while the PLAY menu appears,
or in PLAY or continuous playback mode, the mode changes to the
TEST mode stop state.
• When the PLAY button is pressed while the PLAY menu appears,
continuous playback is initiated from the current pickup position.
• Whenever the DISP button is pressed in the PLAY menu, the target
address changes as follows.
0032 → 03C0 → 0700 → 08A0 → 0950 → 0032 → •••
When the PLAY button is pressed while a target address is dis-
played, continuous playback is performed after searching that
address.
• Each time the REC button is pressed while the PLAY mode target
address is displayed, the digit which is changed by pressing the
FORWARD/REVERSE button is changed as follows.
0032 → 0032 → 0032 → 0032 → •••
• When the FORWARD button is pressed in the PLAY mode target
address is displayed, the digit of address specified by the REC
button is set to +1h. (0 to F)
• When the REVERSE button is pressed in the PLAY mode target
address is displayed, the digit of address specified by the REC
button is set to -1h. (0 to F)
* When the fast FORWARD/REVERSE button is kept pressed, the
selected digit number continuously varies in a cycle of 100 ms.
• If you press the BASS button on the remote control in the continuous
playback mode, the number of jumps changes as follows.
1 → 10 → 100 step → 1 •••
* After the number of jump lines is indicated for one second, the
address indication is restored.
• When the FORWARD button is pressed in the continuous playback
mode, the specified number of lines is jumped in the FWD direction.
• When the REVERSE button is pressed in the continuous playback
mode, the specified number of lines is jumped in the REV direction.
* When the FORWARD/REVERSE button is held down, jump is
repeated every approx. 100 ms.
• Whenever the DISP button is pressed in the continuous playback
mode, the indication changes as follows.
– 9 –
MD-DR470H/MD-DR480H
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