RXD-655/755
16
ADJUSTMENT
CD SECTION
Figure 12-2
CD ERROR CODE DESCRIPTION
Error
State Code
[Servo System Error]
0001
Cannot detect Pickup-in SW
0002
DSP access error
[Error during close operation]
0101
Open/Close SW not functioning (Low
→
High)
0103
Open/Close SW not functioning (High
→
Low)
[Error during open operation]
0201
Open/Close SW not functioning (Low
→
High)
0203
Open/Close SW not functioning (High
→
Low)
[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.
0307
Clamp SW not function (Low
→
High)
0308
Clamp SW not function (High
→
Low)
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 12-2
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
•
Adjustment
T
T
EFBL
FDO
TE
Stopped
CH1=500mV
DC 10:1
CH2=200mV
DC 10:1
CH3=1V
DC 10:1
500ms/div
(500ms/div)
NORM:20kS/s
1
2
3
=Record Length=
Smoothing : ON
CH1 : 0.000V
CH2 : 0.000V
Main : 100K
Zoom : 2k
Mode : SINGLE
Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2us
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger=
=Filter=
=Offset=
CH2
v/DIV
200mV
1999/04/05 20:26:47
• FM
Notes
1. Description of the "FM IF Adjustment" is not carried on this manu-
al.
It is because the IF coil in the FM front end section has been best
adjusted in the factory so that its further adjustment is not needed
at the field. When replacing the FM front end assembly, no adjust-
ment is needed either.
2. The parts in the FM front end section are prepared in a complete
unit, so you can't obtain each part individually.
TUNER SECTION
fL : Low-range frequency
fH : High-range frequency
• AM IF/RF
Signal generator : 400HZ, 30%, AM modulated
✽
1. Input Antenna
Output : TP302
✽
2. Input Antenna
Output : TP301
Test Stage
Frequency
Frequency Display
Setting/Adjusting
PartsInstrument Connection
AM IF
450kHz
1620kHz
T351
✽
1
AM Band Coverage
-
522kHz
(fL) : T306 1.1±0.1V
✽
2
AM Tracking
990kHz
990kHz
(fL) : T303
✽
1
SO301
FM ANTENNA
AM LOOP
ANTENNA
T303
FE301
í
AM
TRACKING
✽
R381
ï
TP301
T306
✽
solder side view
ï
AM BAND
T351
COVERAGE
TP302
ó
R357
AM
ADJUSTMENT POINTS
(Component Side View)