CD-BK137W
TUNER SECTION? FM RF
Signal generator: 1 kHz, 40 kHz dev., FM modulated
fL: Low-range frequency
fH: High-range frequencyTest StageFrequency FrequencySetting/ Instrument
DisplayAdjusting Connection
? AM IF/RF
Point
Signal generator: 400 Hz, 30%, AM modulated
FM BandN87.50 MHz T301(fL):*1
Test Stage Frequency FrequencySetting/Instrument
Coverage1.3 V ? 0.1 V
DisplayAdjustingConnection
PartsFM RF98.00 MHz 98.00 MHz L312*2
(10-30 dB)
AM IF450 kHz1,602 kHzT351*1
AM BandN531 kHz(fL): T306 *2*1. Input: Antenna Output: TP301
Coverage1.1 ? 0.1 V*2. Input: Antenna Output: Speaker terminal
AM Tracking 990 kHz990 kHz(fL): T303 *1? FM IF
*1. Input: Antenna Output: TP302Signal generator: 10.7 MHz, FM modulated
*2. Input: Antenna Output: TP301Test StageFrequency FrequencySetting/ Instrument
DisplayAdjusting Connection
CNP302SO302Point
AM LOOPFM ANTENNA
ANTENNATERMINALIF10.7 MHz98 MHzT302*1MAIN PWB
(Turn the
core of trans-
former T302
fully counter-
T303clock wise)L312
IC301
AM FM RF
TRACKING fL*1. Input: AntennaOutput: TP301
T306
T301
TP302
T302
R356FM BAND
COVERAGE fL
AM BAND
IC303FM IF
COVERAGE fL
R316
T351
AM IFTP301
Figure 12-1 ADJUSTMENT POINTS
CD SECTIONCD ERROR CODE DESCRIPTION
Y AdjustmentErrorState Code
Since this CD system incorporates the following automatic[Servo System Error]
adjustment functions, readjustment is not needed when0001Cannot detect Pickup-in SW
replacing the pickup. Therefore, different PWBs and pickups0002DSP access error
can be combined freely.[Error during close operation]
Each time a disc is changed, these adjustments are0101Open/Close SW not functioning (Low ? High)
performed automatically. Therefore, playback of each disc0103Open/Close SW not functioning (High ? Low)
can be performed under optimum conditions.
[Error during open operation]
0201Open/Close SW not functioning (Low ? High)
Items adjusted automatically
0203Open/Close SW not functioning (High ? Low)
(1) Offset adjustment (The offset voltage between the head
[Error during skip operation]
amplifier output and the VREF reference voltage is
0302Pickup-in SW is not detected
compensated inside the IC.)
0306During Disc 1 search, Open/Close SW or Clamp SW
* Focus offset adjustmentor Disc SW do not change to low.
* Tracking offset adjustment0307Clamp SW not function (Low ? High)
(2) Tracking balance adjustment (waveform drawing0308Clamp SW not function (High ? Low)
Fig.12-2 EFBL)StoppedT1999/04/05 20:26:47
CH1=500 mVCH2=200 mVCH3=1 V500 ms/div
(3) Gain adjustment (The gain is compensated inside the ICDC 10:1DC 10:1DC 10:1(500 ms/div)
NORM:20 kS/s
so that the loop gain at the gain crossover frequency will
be 0 dB.)TFDO
1
* Focus gain adjustment
* Tracking gain adjustment
TE3
EFBL
2
CH2
v/DIV
200 mV
=Filter==Offset==Record Length==Trigger=
Smoothing : ONCH1 : 0.000 VMain : 100KMode : SINGLE
BW : FULLCH2 : 0.000 VZoom : 2kType : EDGE CH1
CH3 : 0.00 VDelay : 0.0 ns
CH4 : 0.00 VHold off : 0.2 ?s
Figure 12-2
� 12 � |
ACEC
SHARP
