Sharp CD-K7000W Service Manual page 15

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CD SECTION
• Adjustment
Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacing the pickup. Therefore, different PWBs and pickups
can be combined freely.
Each time a disc is changed, these adjustments are
performed automatically. Therefore, playback of each disc
can be performed under optimum conditions.
Items adjusted automatically
(1) Offset adjustment (The offset voltage between the head
amplifier output and the VREF reference voltage is
compensated inside the IC.)
* Focus offset adjustment
* Tracking offset adjustment
(2) Tracking balance adjustment (waveform drawing 15
EFBL)
(3) Gain adjustment (The gain is compensated inside the IC
so that the loop gain at the gain crossover frequency will
be 0dB.)
* Focus gain adjustment
* Tracking gain adjustment
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– 15 –
CD-K7000W/C7000W,CP-C7000
CD ERROR CODE DESCRIPTION
Error
[Servo System Error]
0001
Cannot detect Pickup-in SW
0002
DSP access error
[Error during close operation]
Open/Close SW not functioning (Low → High)
0101
Open/Close SW not functioning (High → Low)
0103
[Error during open operation]
Open/Close SW not functioning (Low → High)
0201
Open/Close SW not functioning (High → Low)
0203
[Error during skip operation]
0302
Pickup-in SW is not detected
0306
During Disc 1 search, Open/Close SW or Clamp SW
or Disc SW do not change to low.
Clamp SW not function (Low → High)
0307
Clamp SW not function (High → Low)
0308
T
Stopped
CH1=500mV
CH2=200mV
CH3=1V
DC 10:1
DC 10:1
DC 10:1
T
FDO
1
TE
3
EFBL
2
=Filter=
=Offset=
=Record Length=
Smoothing : ON
CH1 :
0.000V
Main :
BW : FULL
CH2 :
0.000V
Zoom :
CH3 :
0.00V
CH4 :
0.00V
Figure 15
State Code
1999/04/05 20:26:47
500ms/div
(500ms/div)
NORM:20kS/s
CH2
v/DIV
200mV
=Trigger=
100K
Mode : SINGLE
2k
Type : EDGE CH1
Delay :
0.0ns
Hold off :
0.2us

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