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SHUF
SHUF
SHUF
FM RF signal
generator
antenna
terminal
0.01
µ
F
set
SECTION 3
ELECTRICAL ADJUSTMENTS
Carrier frequency : 98.00 MHz
Output level
: 22 dB (12.6
µ
V)
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
FM Auto Scan/Stop Level Adjustment
Setting :
SOURCE button : FM
3. Push the preset 3 button.
Display
4. Adjust with the volume RV2 on TU10 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
CD SECTION
CD section adjustments are done automatically in this set.
TUNER SECTION
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 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 S-Meter Adjustment
5. MW Auto Scan/Stop Level Adjustment
0 dB = 1
µ
V
Adjustment Location : See page 22.
Summary of Contents for CDX-C7850R
Page 3: ... 3 SECTION 1 GENERAL This section is extracted from instruction manual ...
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Page 39: ... 47 48 CDX C7850R Page 51 ...
Page 41: ...CDX C7850R 51 52 Page 65 Page 66 Page 47 ...
Page 49: ... 67 4 18 SCHEMATIC DIAGRAM RELAY SECTION Page 63 Page 60 Page 60 CDX C7850R ...