TUNER SECTION |
| 0 dB = 1 μV |
Cautions during repair
When the tuner unit is defective, replace it by a new one because its internal block is difficult to repair.
TEST MODE
This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and AM (MW) Auto Scan/Stop Level adjustments can be performed easier than it in ordinary procedure.
<Set the Test Mode>
1.Set the “OFF” mode.
2.Push the preset 4 button.
3.Push the preset 5 button.
4.Press the preset 1 button for more than two seconds.
5.Then the display indicates all lights, the test mode is set.
<Release the Test Mode> 1. Push the OFF button.
Note on Adjustment
The adjustments of tuner section, should be performed according to the following sequence.
1.FM Auto Scan/Stop Level Adjustment
2.FM Stereo Separation Adjustment (WIDE)
3.FM Stereo Separation Adjustment (NARROW)
4.FM RDS
5.AM (MW) Auto Scan/Stop Level Adjustment
FM Auto Scan/Stop Level Adjustment
Setting :
SOURCE button: FM
FREQUENCY SELECT switch (C8100) : FM 200K
FM RF signal
generator
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| 0.01 ∝F | ||||
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Carrier frequency : 97.9 MHz (C8100) | |||||||
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| 98.00 MHz (C8100R) | ||||
Output level | : 22 dB (12.6 μV) | ||||||
Mode | : mono | ||||||
Modulation | : 1 kHz, 22.5 kHz deviation (30%) | ||||||
Procedure :
1.Set to the test mode.
2.Push the SOURCE button and set to FM.
Display
SHUF
*1
*2
REG
3.Push the preset 3 button. Display
SHUF
*1
*2
REG
4.Adjust with the volume RV2 on TUX10 so that the “FM” indication turns to “FM0” indication on the display window. But, in case of already indicated “FM0”, turn the RV2 so that put out light “0” indication and adjustment.
Display
SHUF
*1
*2
REG
*1 :
*2 : “REG” is displayed only for
Adjustment Location : See page 28.
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