Sharp CD-MD3000H Service Manual page 38

CD-MD3000H/CD-MD3000W
If "R/P WHICH?" appears, the mechanism and the PWB can be mismatched. Check whether the combination of the playing/
recording PWB and mechanism are appropriate.
If "R/P WHICH?" still appears, eject the disc and check as follows.
Check 1: Check the pin 100 line of IC1401 for defective soldering. Check the pin 93 line of IC1401 for short-circuit and defective
soldering (Also check the SW PWB).
Check 2: Check the pin 3 line of IC1401 for defective soldering and short-circuit with other patterns. Check that the pickup laser
is not broken.
Confirmation of pickup laser power
It is possible to confirm in the record/playback mode with the aid of laser power meter. However, since the laser power meter
measurement is characterized with dispersion, obtained data are used only for confirmation.
Reference data (at room temperature 25°C)
Playback: 0.72±0.1 mW
Record: 5.5±0.5 mW
Note: Never see directly the laser light. Otherwise your eyes are injured.
2. AUTO pre-adjustment mode (Low reflection disc only)
With the pre-adjustment disc (MMD-318)
Step No. Setting Method
Step 1 Test mode STOP state
Step 2 Press once the EQUALIZER button. AUTO adjustment menu
Step 3 Press once the REV PLAY button.
Step 4 Press once the TAPE REC button.
End of adjustment
Step 5 Grating adjustment,
adjustment value output
Press once the MD STOP button.
Step 6 Adjustment value output
Press once the MD STOP button.
• : Adjustment name
3. AUTO adjustment mode
Step No. Setting Method
Step 1 Test mode STOP state
Step 2 Press once the EQUALIZER button.
Step 3 Press once the TAPE REC button.
End of adjustment
Step 4 Adjustment value output
Press the TAPE REC button.
Press the MD STOP button.
Step 5 Continuous playback (pit section) Confirmation of CI error
Continuous playback (groove section)
Step 6 Press the DISP/CHARACTER button. Conformation of ADIP error (High reflection disc STEP 7)
Press the MD STOP button.
Step 7 Continuous playback (pit section) Confirmation of Jitter
Continuous playback (groove section)
Step 8 Adjustment value output
Press the MD STOP button.
• : Adjustment name,
4. AUTO AFB adjustment mode (Low reflection disc only)
Step No. Setting Method
Step 1 Test mode STOP state
Step 2 Press the EQUALIZER button two times. AUTO FAB adjustment menu
Step 3 Press the TAPE REC button.
Step 4 Adjustment value output
Press the MD STOP button.
• , , : Measurement value
AUTO pre-adjustment menu
• During automatic adjustment
HAo→ • • • • • • • • • →LAO
If adjustment is OK, Step 5.
If adjustment is NG, Step 6.
STEP 3 AUTO pre-adjustment menu
STEP 3 AUTO pre-adjustment menu
The AUTO preliminary adjustment should have been completed.
AUTO adjustment menu
The slide moves to the innermost periphery, and automatic
adjustment is started.
• In case of high reflection disc
PEG→HAG
• In case of low reflection disc
PEG→LAG
If adjustment is OK, Step 4.
If adjustment is NG, Step 8.
For grating adjustment
STEP 5
STEP 2 AUTO adjustment
STEP 2 AUTO adjustment menu
STEP 2 AUTO adjustment menu
: Measurement value,
The AUTO preliminary adjustment should have been completed.
The slide moves to the innermost periphery, and automatic
"PB_DISC_ _ _ " (HIGH reflection DISC)
STEP 2 AUTO adjustment
Remarks
changes as follows.
Remarks
changes as follows.
changes as follows.
: Address
Remarks
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