– 17 –
Dolby Level Adjustment
Setting:
[SHIFT]
button
: ON (light up SET UP and
PLAY MODE)
Preset
[3]
(PLAY MODE) button : NR off
SOUND (BAS) button
: Center
SOUND (TRE) button
: Center
SOUND (BAL) button
: Center
SOUND (FAD) button
: Center
SOUND (VOL) button
: Maximum
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust RV231 (L-CH) and RV241 (R-CH) so that the level
meter reading is –6±1 dB (0.35 to 0.44 V).
Adjustment Location: See page 20.
set
+
–
test tape
P-4-D400
(400 Hz, 0 dB)
level meter
MAIN board
TP (DOLBY-L)/
TP (DOLBY-R)
TUNER SECTION
0 dB=1 µV
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 Stereo Separation Adjustment
3. FM RDS S-Meter Adjustment
4. MW Auto Scan/Stop Level Adjustment
FM Auto Scan/Stop Level Adjustment
Setting:
[SOURCE]
button: FM
Procedure:
1. Set to the test mode. (See page 16.)
2. Push the
[SOURCE]
button and set to FM.
Display
3. Adjust with the volume RV2 on TU10 so that the “FM” indi-
cation 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 20.
set
antenna jack (J10)
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 (30%)
0.01
µ
F
REG
SHUF1
REG
SHUF1