Sony XR-C6090R / XR-C6100R Service Manual ▷ View online
– 17 –
FM Stereo Separation Adjustment
Setting:
[SOURCE]
button: FM
Procedure:
1. Tuner the 98.00 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. Tuner the 98.00 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 ± 2 dB then signal generator input set to –20 dB.
Adjustment Location: See page 19.
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.
Procedure:
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 19.
FM RF signal
generator
Carrier frequency : 98.00 MHz
Output level
Output level
: 60 dB (1 mV)
Mode
: stereo
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 : 98.0 MHz
Output level
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main: 1 kHz, 20 kHz deviation (26.7%)
sub: 1 kHz, 20 kHz deviation (26.7%)
sub: 1 kHz, 20 kHz deviation (26.7%)
:
19 kHz pilot: 7.5 kHz deviation (10%)
0.01
µ
F
set
antenna jack (J1)
+
–
–
speaker out terminal
level meter
4
Ω
FM Noise Focus Adjustment
Setting:
[SOURCE]
button: FM
FM Signal Meter Adjustment
Setting:
[SOURCE]
button: FM
Procedure:
1. Set to the test mode. (See page 15.)
2. Push the
1. Set to the test mode. (See page 15.)
2. Push the
[SOURCE]
button and set to FM.
Display
3. Push the
[6]
button.
4. Adjust RV1 so that the display indication is “160”.
Display
Specification: Display indication: 158 to 162
Adjustment Location: See page 19.
FM RF signal
generator
Carrier frequency : 98.00 MHz
Output level
Output level
: 35 dB (56.2
µ
V)
Mode
: mono
Modulation
: no modulation
0.01
µ
F
set
antenna jack (J1)
INTRO
FM
FM
INTRO
REG
– 18 –
AM (MW) Auto Scan/Stop Level Adjustment
Make this adjustment after “FM Auto Scan/Stop Level Adjust-
ment”.
Setting:
ment”.
Setting:
[SOURCE]
button: MW
Procedure:
1. Set to the test mode. (See page 15.)
2. Push the
1. Set to the test mode. (See page 15.)
2. Push the
[SOURCE]
button and set to FM.
3. Push the
[MODE]
button and set to MW.
Display
4. Adjust with the volume RV1 on TU1 so that the “MW” indi-
cation 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
Adjustment Location: See page 19.
AM RF signal
generator
Carrier frequency : 999 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)
999 @
MW
INTRO
999
INTRO
– 19 –
Adjustment Location:
– SET UPPER VIEW –
– MAIN BOARD –
TU1
Tape Speed Adjustment
RV1 AM (MW) Auto Scan/Stop Level Adjustment
RV3 FM Noise Focus Adjustment
RV4 FM Stereo Separation Adjustment
RV2 FM Auto Scan/Stop Level Adjustment
RV1 FM Signal Meter Adjustment
RV301
(R-CH)
RV401
(L-CH)
(L-CH)
Dolby Level
Adjustment
J1
antenna jack
antenna jack
TU1
TP (DOLBY L)
IC351
TP
(DOLBY R)
TP
(GND)
– 37 –
• IC Block Diagrams
– MAIN Section –
IC1
TB2114F (EL)
IC3
TDA7330BD-013TR
VDD
SEEK/RECP
1
2
3 4
5
6
7
8
9
10
24 23
22
21 20
19
18
17
16
15
11 12
14 13
BUFFER
XTOUT
O
SC OUT
CE
DIN
CK
DOUT
SR
I/O-1
I/O-2
OUT-1
OUT-2
OUT-3
AM/FM IF
VDD
FM IN
AM IN
D-GND
FM CP OUT
VT
AM CP OUT
VCC
RF
A-GND
XTIN
BUS INTERFACE
I/O PORTS
OUT PORTS
OSC IN
OR
X'TAL OSC
ON/OFF
REFERENCE
COUNTER
PHASE
COMPARATOR
20BIT
IF COUNTER
2
MODULAS
PRESCALER
12BIT
PROGRAMABLE
COUNTER
AMP
AMP
AMP
+
–
RIPPLE
FILTER
18BIT
18BIT
22BIT
40BIT
SHIFT
SHIFT
RESISTER
REF
VCC
+
–
SIG
SEEK/RECP
4BIT
SWALLOW
COUNTER
PSC
N
DATA
COSTAS
LOOP
PLL
57kHz
PHASE
DECODER
DIFF
DECODER
CLOCK
RECOVERY
PLL
1.4675kHz
ON/OFF
OSCILLATOR
fx DIVIDER
TEST LOGIC
8th ORDER
SC-BANDPASS
FILTER
2nd ORDER
ANTIALIAS
FILTER
+
–
–
20
19
18
17
16
15 14
13
12
11
10
9
8
6
7
3
4
5
1
2
POR
TM
FSEL
T7
VCC
ARI
OUAL
RODA
ROCL
T57
MPXIN
VREF
CMP
FILOUT
GND
T1
T3
T4
OSCOUT
OSCIN
VCC
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