Tape Deck Section; Tuner Section - Sony XR-C543SP Service Manual

See the adjustment location from on page 21 for the
adjustment.

TAPE DECK SECTION

Tape Speed Adjustment
Procedure:
1. Put the set into the FWD PB mode.
test tape
WS-48A
(3 kHz, 0 dB)
set
Specification: Constant speed
Speed checker
–1.5 to +2.5%
Adjustment Location: See page 21.
DOLBY Level Adjustment
Setting:
Preset 3 (DOLBY) button
SEL (BAS) button
SEL (TRE) button
SEL (BAL) button
SEL (FAD) button
SEL (VOL) button
D-BASS control
main board L-CH: TP101 (DOLBY-L)
test tape
P-4-D400
(400 Hz, 0 dB)
set
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust RV121 (L-CH) and RV221 (R-CH) so that the level
meter reading is –6 ± 0.5 dB (0.37 to 0.41 V).
Adjustment Location: See page 21.
0 dB=0.775 V
speed checker
or
frequency counter
10 k Ω
– +
LINE OUT
Frequency counter
2,955 to 3,075 Hz
: OFF
: Center
: Center
: Center
: Center
: Maximum
: OFF
R-CH: TP201 (DOLBY-R)
level meter
+
–
– 18 –

TUNER SECTION

Cautions during repair
When the tuner unit is defective, replace it by a new one be-
cause its internal block is difficult to repair.
FM Auto Scan/Stop Level Adjustment
Setting:
SOURCE button: FM
FM RF signal
generator
0.01 µF
Carrier frequency : 98.0 MHz
Output level : 20 dB (10.0 µV)
Mode : mono
Modulation : 1 kHz, 22.5 kHz deviation (30%)
Procedure:
1. Set to the test mode. (See page 17).
Display
FM
2. Push the preset 3 button.
Display
FM
3
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
FM
3
Adjustment Location: See page 21.
0 dB=1 µV
antenna jack
set
98. 0
SHUF1
98. 0
SHUF1
98. 0
SHUF1