Fm Muting Level Adjustment; Fm Stereo Distortion Adjustment; Fm Stereo Separation Adjustment - Marantz SR-14EX Service Manual

6. FM Muting Level Adjustment

Turn the variable resistor R212 to no indication ("TUNED") point. And return that valuable resistor in opposite to the
"TUNED" indicate point.
Input Signal Source
Step
Connection
Signal generator output to
1
FM antenna terminal. (75 Ω)
2

7. FM STEREO Distortion Adjustment

Adjust the L channel with the RF signal modulated only L channel first and confirm the R channel with the RF signal
modulated only R channel.
Input Signal Source
Step
Connection
Signal generator output to
1
FM antenna terminal. (75 Ω)
2

8. FM STEREO Separation Adjustment

Input Signal Source
Step
Connection
Signal generator output to
1
FM antenna terminal. (75 Ω)
2
Signal Source Signal Output
Frequency Level and Modulation
10 µV (20 dB)
MONO 1 kHz /
Dev.40 kHz 53.3% (K, N, S)
98 MHz
MONO 1 kHz /
(K, N, S, U)
Dev. 75 kHz 100%
83 MHz
(F)
Over mentioned level
+3 dB
Signal Source Signal Output
Frequency Level and Modulation
500 µV (54 dB)
L or R 1 kHz /
Dev. 40 kHz 53.3%
98 MHz
PILOT 19 kHz /
(K, N, S, U)
Dev. 6 kHz 8% (K, N, S)
83 MHz
(F)
L or R 1 kHz /
Dev. 67.5 kHz 90%
PILOT 19 kHz /
Dev. 6.75 kHz 9%
Signal Source Signal Output
Frequency Level and Modulation
98 MHz same specification as
(K, N, S, U)
FM STEREO distortion
83 MHz adjustment.
(F) Input only L channel.
98 MHz
same specification as
(K, N, S, U) FM STEREO distortion
83 MHz
adjustment.
(F)
Input only R channel.
72
Reception Adjustment
Frequency
98 MHz
(K, N, S, U)
83 MHz
(F)
(U,F)
AUTO
Only Confirm
SCAN
Reception Adjustment
Frequency
FRONT END
98 MHz
(K, N, S, U)
83 MHz
(F)
Only Confirm
(U, F)
Reception Adjustment
Frequency
98 MHz
(K, N, S, U)
83 MHz
(F)
98 MHz
(K, N, S, U)
83 MHz
(F)
Adjustment
Point Value
"TUNED"
R212
indicate on FLD
"TUNED"
indicate on FLD
Adjustment
Point Value
IF COIL Distortion level
in Minimum
at TAPE-OUT
Distortion level
Simimlar
as L ch.
at TAPE-OUT
R ch.
Adjustment
Point Value
Output level
Minimum
R211
at TAPE-OUT
channel R
Output level
Similar as Rch
R211
at TAPE-OUT
channel L