Read Sony XR-C6100 / XR-C6100W Service Manual online
– 15 –
– 16 –
FM Noise Focus Adjustment
Setting:
[SOURCE]
button : FM
FREQUENCY SELECT switch : FM 200 k
Procedure:
1. Tune the 97.9 MHz.
2. The then output level is supposing that (A) dB.
3. Adjust with the volume RV3 on TU1 so that the output level is
1. Tune the 97.9 MHz.
2. The then output level is supposing that (A) dB.
3. Adjust with the volume RV3 on TU1 so that the output level is
(A) –32 dB then signal generator input set to –20 dB.
Adjustment Location: See page 16.
FM Stereo Separation Adjustment
Setting:
[SOURCE]
button : FM
FREQUENCY SELECT switch : FM 200 k
Procedure:
FM Stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
R-CH
L-CH
Adjust RV4 on TU1
for minimum reading.
R-CH
R-CH
C
D
L-CH
R-CH
Adjust RV4 on TU1
for minimum reading.
L-CH Stereo separation: A-B
R-CH Stereo separation: C-D
The separations of both channels should be equal.
R-CH Stereo separation: C-D
The separations of both channels should be equal.
Specification: Separation more than 30 dB
Adjustment Location: See page 16.
FM RF signal
generator
Carrier frequency : 97.9 MHz
Output level
Output level
: 60 dB (1 mV)
Mode
: mono
Modulation
: 1 kHz, 75 kHz deviation (100%)
0.01
µ
F
set
antenna jack (J1)
+
–
–
speaker out terminal
level meter
4
Ω
FM RF signal
generator
Carrier frequency : 97.9 MHz
Output level
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main: 1 kHz, 33.75 kHz deviation (45%)
sub: 1 kHz, 33.75 kHz deviation (45%)
19 kHz pilot: 7.5 kHz deviation (10%)
sub: 1 kHz, 33.75 kHz deviation (45%)
19 kHz pilot: 7.5 kHz deviation (10%)
0.01
µ
F
set
antenna jack (J1)
+
–
–
speaker out terminal
level meter
4
Ω
MW Auto Scan/Stop Level Adjustment
Setting:
[SOURCE]
and
[MODE]
button : MW
FREQUENCY SELECT switch : MW 10 k
AM RF signal
generator
Carrier frequency : 1000 kHz
30% amplitude
modulation by
1 kHz signal
Output level
30% amplitude
modulation by
1 kHz signal
Output level
: 33 dB (44.7
µ
V)
(50
Ω
)
set
AM dummy antenna
30
Ω
15 pF
65 pF
antenna jack (J1)
Procedure:
1. Set to the test mode. (See page 13.)
2. Push the
1. Set to the test mode. (See page 13.)
2. Push the
[SOURCE]
button and set to FM.
3. Push the
[MODE]
button and set to MW.
Display
MW
1000
SHUF1
4. Adjust with the volume RV1 on TU1 so that the “MW” indica-
tion turns to “MW0” indication on the display window.
But, in case of already indicated “MW0”, turn the RV1 so that
put out light “0” indication and adjustment.
But, in case of already indicated “MW0”, turn the RV1 so that
put out light “0” indication and adjustment.
Display
1000
SHUF1
Adjustment Location: See page 16.
Adjustment Location:
– SET UPPER VIEW –
TP (GND)
S501
POWER SELECT
SWITCH
B (OFF)
↔
A (ON)
S502
FREQUENCY
SELECT
SWITCH
SWITCH
10 k (MW)
200 k (FM)
9 k (MW)
50 k (FM)
R-CH
L-CH
L-CH
TP (DOLBY)
Dolby Level Adjustment
Dolby Level Adjustment
↔
– SET BUTTON VIEW –
Tape Speed Adjustment
RV131
(R-CH)
RV231
(L-CH)
(L-CH)
Dolby Level
Adjustment
TU1
(E model only)
RV1 MW Auto Scan/Stop Level Adjustment
RV2 FM Auto Scan/Stop Level Adjustment
RV3 FM Noise Focus Adjustment
RV4 FM Stereo Separation Adjustment
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