– 33 –
KL-W7000/W9000
RM-Y980
Adjustment Items and Procedure
Tools and
Test Points
Adjustment Places Illustration Waveforms and Values
Signals
3. r Curve Adjustment
•
C board input signal level setting
1.
Using *I
2
C bus encoder, set the NT-WIDE mode.
2.
Enter *NT double speed (10 step) signal of bias 2.2V and amplitude
1.8Vp-p to the CN5201 pins 1~3.
•
After adjusting the amplitude of 1.8V, adjust the bias level of
2.2V.
•
R channel
1.
Connect *oscilloscope to *TP5203.
2.
*DC power, apply 3.60
±
0.02V to *TP5211.
3.
Adjust *RV5203 so that 10 IRE ~ 20 IRE becomes *600
±
20mV.
Adjustment is no good when 0 IRE ~10 IRE voltage is below 100 mV.
4.
Confirm that forward 10 IRE ~ reverse 10 IRE voltage is over 6.5V.
•
G channel
1.
Connect *oscilloscope to *TP5403.
2.
*DC power, apply 3.60
±
0.02V to *TP5411.
3.
Adjust *RV so that 10 IRE ~ 20 IRE becomes *700
±
20mV.
4.
Stop the voltage application to *TP5411.
* I
2
C bus encoder
*
* TP5403 [R-SIG2]
* TP5411 [GLBS]
* Oscilloscope
* DC power
*RV5403 [RL. GAIN]
*
10 IRE~20 IRE : 600
±
20 mV
*
10 IRE~20 IRE : 600
±
20 mV
* TP5203 [R-SIG2]
* TP5211 [RLBS]
* TP5207 is Ref. GND
*TP5411 [GLBS]
*RV5405 [GL.GAIN]
Use TP5201,
TP5401 and TP5601
as reference GND
respectively.
10
GND
IRE
100 IRE
$
4
2.0
±
0.02 Vp-p
2.7
±
0.02 V
20 IRE
10 IRE
20 IRE
10 IRE
