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CD-BA2000H
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage
Frequency
AM IF
450 kHz
AM Band
—
Coverage
AM Tracking 990 kHz
*1. Input: Antenna, Output: TP302
*2. Input: Antenna, Output: TP301
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 14-2
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
Frequency
Setting/
Instrument
Display
Adjusting
Connection
Parts
1,720 kHz
T351
*1
522 kHz
(fL): T306
*2
1.1 ± 0.1 V
990 kHz
(fL): T303
*1
FM ANTENNA
Figure 14-1 ADJUSTMENT POINT
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Test Stage
FM Band
Coverage
FM RF
*1. Input: Antenna, Output: TP301
*2. Input: Antenna, Output: Speaker terminal
CNP302
AM LOOP
SO301
ANTENNA
TUNER PWB
1
T303
FE301
TP301
R381
T351
AM IF
CD ERROR CODE DESCRIPTION
Error
0001
0002
0101
0103
0201
0203
0302
0306
0307
0308
– 14 –
Frequency Frequency
Display
2.2 V ± 50 mV*
—
87.50 MHz
98.00 MHz 98.00 MHz
L312
(10-30 dB)
AM
TRACKING fL
T306
AM BAND
COVERAGE fL
TP302
R357
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 :
100K
BW : FULL
CH2 :
0.000V
Zoom :
2k
CH3 :
0.00V
CH4 :
0.00V
Figure 14-2
State Code
[Servo System Error]
Cannot detect Pickup-in SW
DSP access error
[Error during close operation]
Open/Close SW not functioning (Low → High)
Open/Close SW not functioning (High → Low)
[Error during open operation]
Open/Close SW not functioning (Low → High)
Open/Close SW not functioning (High → Low)
[Error during skip operation]
Pickup-in SW is not detected
During Disc 1 search, Open/Close SW or Clamp SW
or Disc SW do not change to low.
Clamp SW not function (Low → High)
Clamp SW not function (High → Low)
Serring/
Instrument
Adjusting
Connection
Point
1
*2
1999/04/05 20:26:47
500ms/div
(500ms/div)
NORM:20kS/s
CH2
v/DIV
200mV
=Trigger=
Mode : SINGLE
Type : EDGE CH1
Delay :
0.0ns
Hold off :
0.2us
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