Sharp CD-C250X BK Service Manual page 11

Setting the test mode
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Any one of 4 test modes can be set by pressing several keys as follows
TEST 4 mode
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Function - CD test mode
Setting of TEST 4 mode
<MEMORY>
When the tracking servo is - The pickup returns to the - When the tracking servo is - The pickup returns to the
turned on, PLAY is started at
once.
If the following key is pressed during PLAY, it is possible to
specify directly any Track No.
<Disc Number 2> key: Track 8
Note:
Only in STOP state it is possible to slide the pickup with the (m) or (4q) key.
VOL. --- Last memory
X-BASS --- OFF
Canceling method - POWER OFF
Since this CD system incorporates the following automatic adjustment
function, when the pickup is replaced, it is not necessary to readjust it.
Automatic adjustment item
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Figure 11-l
Figure 1 l-3
TEST : CD operation test
IL is not performed.
<STOP>
ordinary stop position.
OFF-SET
ADJUST
OFF-SET
ADJUST
TRACKING/
ERROR
BARANCE
<MEMORY>
turned off, PLAY is started
at once.
2. Tracking offset (Fig. 11-2)
3. E/F balance (tracking error balance) (Fig. 11-3)
4. RF level AGC function (HF level: constant)
5. RF level automatic follow-up of the tracking gain
This automatic adjustment is performed each time a disc is changed.
Therefore, each disc is played back using the optimal settings.
Figure 11-4 CHECKING POINTS
ordinary stop position.
Figure 11-2
OFF-SET
ADJUST