– 14 –
TUNER SECTION
98.00
SHUF1
Cautions during repair
When the tuner unit is defective, replace it by a new one be-
cause its internal block is difficult to repair.
Note:
Adjust the tuner section in the sequence shown below.
1. FM Auto Scan/Stop Level Adjustment
2. FM Noise Focus Adjustment
3. FM Stereo Separation Adjustment
4. MW Auto Scan/Stop Level Adjustment
FM Auto Scan/Stop Level Adjustment
Setting:
[SOURCE]
button: FM
FREQUENCY SELECT switch: FM50 k
Procedure:
1. Set to the test mode. (See page 13.)
2. Push the
[SOURCE]
button and set to FM.
Display
3. Adjust with the volume RV2 on TU1 so that the “FM” indica-
tion 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
Adjustment Location: See page 16.
FM RF signal
generator
Carrier frequency : 98.0 MHz
Output level
: 22 dB (12.6
µ
V)
Mode
: mono
Modulation
: 1 kHz, 22.5 kHz deviation
0.01
µ
F
set
antenna jack (J1)
FM
98.00
SHUF1
0 dB=1 µV
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust RV231 (L-CH) and RV131 (R-CH) so that the level
meter reading is –6±1 dB (0.35 to 0.44 V).
Adjustment Location: See page 16.
Dolby Level Adjustment
Setting:
Preset
[3]
(DOLBY) button
: NR OFF
SEL (BAS) button
: Center
SEL (TRE) button
: Center
SEL (BAL) button
: Center
SEL (FAD) button
: Center
SEL (VOL) button
: Maximum
D-BASS control
: OFF
set
+
–
test tape
P-4-D400
(400Hz, 0dB)
MAIN board
level meter
MAIN board
TP (DOLBY )
TP (GND)
L-CH: IC301
7
R-CH: IC301
@¢
Содержание XR-C6100
Страница 3: ... 3 SECTION 1 GENERAL This section is extracted from instruction manual ...
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Страница 12: ... 12 GUIDE C 2 guide C 1 three claws ...
Страница 22: ... 23 24 6 4 SCHEMATIC DIAGRAM MAIN Section 1 2 See page 31 and 32 for IC Block Diagrams XR C6100 ...
Страница 25: ... 29 30 XR C6100 6 7 SCHEMATIC DIAGRAM PANEL Section ...