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SECTION 3 ELECTRICAL ADJUSTMENTS
TEST MODE This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and AM Auto Scan/Stop Level adjustments can be performed easier than it in ordinary procedure. <Set the Test Mode> 1. Turn ON the regulated power supply. (All LEDs on the set lights up, and the clock is displayed.)
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.
Note: Adjust the tuner section in the sequence shown below.
[OFF] button, if the clock is not displayed. 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. See the adjustment location from on page 17 for the adjustment.
Note: Press the
1. FM Auto Scan/Stop Level Adjustment 2. FM Stereo Separation Adjustment (Wide)
3. FM Stereo Separation Adjustment (Narrow) 4. AM Auto Scan/Stop Level Adjustment FM Auto Scan/Stop Level Adjustment Setting:
[SOURCE] button : FM
FM RF signal generator
antenna jack (CN101) 0.01 µF
MD SECTION
MD section adjustments are done automatically in this set.
Carrier frequency Output level Mode Modulation
set : 98.00 MHz : 22 dB (12.6 µV) : mono : 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
3. Adjust the volume RV2 on TU101 by turning clockwise untill �0� is shown next to �FM� on the display window, If �0� is already shown or the volume RV2 has been turned too far, turn it back counterclockwise untill �0� is disappeared once, then try this adjustment. Display
SHUF
Adjustment Location: See page 17.
15
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