SONY XRC8100
Manual de Servicio

TUNER SECTION
Cautions during repair

0 dB = 1 µV

When the tuner unit is defective, replace it by a new one because its internal block is difficult to repair.

FM Auto Scan/Stop Level Adjustment Setting : SOURCE button : FM FREQUENCY SELECT switch (C8100) : FM 200K
FM RF signal generator antenna terminal

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 S-Meter Adjustment (XR-C8100R only) 5. AM (MW) Auto Scan/Stop Level Adjustment
0.01 µF

Carrier frequency : 97.9 MHz (C8100) 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 : XR-C8100R has the �98.00� displayed. *2 : �REG� is displayed only for XR-C8100R. Adjustment Location : See page 28.

� 25 �