Sharp MD-M3 Service Manual Page 7
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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MD-M3/M1
OPERATION MANUAL
1
SETTING THE CLOCK
1
Press the POWER button to turn the power on.
2
Press the CLOCK button.
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3
Within 5 seconds, press the ENTER button.
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4
Press the
or button to select the time
display mode.
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"0:00" The 24-hour display will appear.
(0:00 - 23:59)
"12:00 AM"
The 12-hour display will appear.
(AM or PM 12:00 - 11:59)
"0:00 AM"
The 12-hour display will appear.
(AM or PM 0:00 - 11:59)
● Note that this can only be set when the unit is
first installed or it has been reset.
5
Press the ENTER button.
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6
Adjust the hour by pressing the
or
button.
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● When the button is pressed once, the time will
increase by 1 hour. When the
button is pressed
once, the time will decrease by 1 hour.
● When the 12-hour display selected, “
AM
” will
change to “
PM
” automatically.
7
Press the ENTER button.
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8
Adjust the minutes by pressing the
or
button.
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● When the
button is pressed once , the time
will increase by 1 minute. When the
button is
pressed once, the time will decrease by 1 minute.
● The hour setting will not advance even if min-
utes advance from "59" to "00".
9
Press the ENTER button.
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● The clock starts operating from "0" seconds.
(Seconds are not displayed.)
To see the time display:
Press the CLOCK button.
● The time display will appear for about 5 seconds
even if stand-by mode.
Note:
● The clock display will flash on and off at the push
of the CLOCK button when the AC power supply
is restored after a power failure occurs or after
the AC power cord is disconnected.
If this happens, follow the procedure below to
change the clock time.
To change the clock time:
Press the CLOCK button.
2
Within 5 seconds, press the ENTER button.
3
Perform steps 6 - 9 above.
To change the time display mode:
1
Reset the microcomputer.
2
Perform steps 1 - 9 above.
In this example, the clock is set for the
24-hour (0:00) system.
4,6,8
2
1
3,5,7,9
RESETTING THE MICROCOMPUTER
MAINTENANCE
Internal care
Do not touch the Laser pickup lens. If fingerprints
or dust accumulate on the pickup, clean it gently
with a dry cotton swab.
External care
Periodically wipe the cabinet with a soft cloth and
a diluted soap solution, then wipe with a dry cloth.
Do not use chemically treated cleaning cloths or
other chemicals.
Care of compact discs
If this product is subjected to strong external inter-
ference (mechanical shock, excessive static elec-
tricity, abnormal supply voltage due to lightning, etc.)
or if it is operated incorrectly, it may malfunction or
the display may not function correctly. If such a prob-
lem occurs, do the following:
1
Press the POWER button to enter the stand-by
mode.
2
Press the POWER button while holding down
the EQUALIZER button and the PLAY
button.
“ALL CLEAR” will appear.
Caution:
The operation explained above will erase all data
stored in memory including clock and timer
settings, and tuner, MD and CD presets.
1,2
2
NO
YES
Correct
Compact discs are fairly resistant to damage, how-
ever mistracking can occur due to an accumulation
of dirt on the disc surface.
Follow the guidelines below for maximum enjoy-
ment from your CD collection and player.
Do not write on either side of the disc, particu-
larly the non-label side.
Signals are read from the non-label side. Do not
mark this surface.
Keep your discs away from direct sunlight, heat,
and excessive moisture.
Always hold the CDs by the edges. Fingerprints,
dirt, or water on the CDs can cause noise or
mistracking. If a CD is dirty or does not play prop-
erly, clean it with a soft, dry cloth, wiping straight
out from the center, along the radius.
Illustration:MD-M3
- SERVICE MANUAL 1
- SPECIFICATIONS 3
- NAMES OF PARTS 4
- SURROUND 5
- SETTING THE CLOCK 7
- TROUBLESHOOTING 8
- MD-M3/M1 10
- DISASSEMBLY 11
- MD MECHANISM SECTION 13
- TEST MODE 15
- MD SECTION 16
- TUNER SECTION 16
- ADJUSTMENT 17
- EEPROM WRITING PROCEDURE 23
- EXPLANATION OF ERROR DISPLAY 25
- NOTES ON SCHEMATIC DIAGRAM 26
- TYPE OF TRANSISTOR AND LED 26
- 8 9 10 11 12 41
- POWER PW 46
- FLEXIBLE 52
- MD MAIN PWB-D (BOTTOM VIEW) 53
- WAVEFORMS OF CD CIRCUIT 54
- WAVEFORMS OF MD CIRCUIT 55
- DIGITAL REC 56
- TROUBLE SHOOTING 57
- -3div -1div 0div +1div +3div 58
- Figure 59-1 59
- POWER SUPPLY SECTION 65
- FUNCTION TABLE OF IC 66
- MD-M3/D1 67
- Figure 69 BLOCK DIAGRAM OF IC 69
- PARTS GUIDE 75
- DESCRIPTION 76
- PARTS CODE 76
- NO. PARTS CODE 76
- MD MECHANISM PARTS 81
- CD MECHANISM PARTS 81
- CABINET PARTS 81
- It is contained 86
- SP1 (L-CH) 88
- SP2 (R-CH) 88
- Full-Range 88
- AUX INPUT LEVEL MAX 89
- Packing Add.,Top 91
- Packing Pad.,Bottom 91
- Packing Add.,Bottom 91
- ALL RIGHTS RESERVED 92
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