Alignment Procedures; Am If Adjustment; Am Tracking Adjustment (Mw); Am Tracking Adjustment (Lw) - Marantz sr-18 u Service Manual

10. ALIGNMENT PROCEDURES

1. AM IF Adjustment

Input Signal Source
Step
Connection
Signal generator output to
1 transmission *loop antenna.
(*:Standard required loop)
REMARK: For receiving antenna, the adapted one is available.
This adjustment is not necessary normally, because the coil LA06 is preset by the original supplier.
It is necessary when the incorrect usable sense and frequency response.
2. AM Tracking Adjustment (MW) [For N only]
**Input Signal Source
Step
Connection
Signal generator output to
1
transmission *loop antenna.
(*:Standard required loop)
2
3 Repeat step 1 and 2 until sensitivity be maximized.

3. AM Tracking Adjustment (LW)

**Input Signal Source
Step
Connection
Signal generator output to
1 transmission *loop antenna.
(*:Standard required loop)
2
Repeat step 1 and 2 until sensitivity be maximized.
3
4. AM auto stop Adjustment
Input Signal Source
Step
Connection
Signal generator output to
1 transmission *loop antenna.
(*:Standard required loop)
2
5. FM MONO. Distortion Adjustment
Input Signal Source
Step
Connection
Signal generator output to
1
FM antenna terminal. (75 Ω)
Signal Source Signal Output
Frequency Level and Modulation
999 kHz
Level 300 µV/m (50dB/m)
(K, KS, N, F)
1000 kHz Mod. 400 Hz 30%
(U)
Signal Source Signal Output
Frequency Level and Modulation
603 kHz
Level 300 - 400 µV/m
(K, KS, N, F)
Mod. 400 Hz 30%
600 kHz
(U)
1404 kHz
Level 300 - 400 µV/m
(K, KS, N, F)
Mod. 400 Hz 30%
1400 kHz
(U)
Signal Source Signal Output
Frequency Level and Modulation
Level 300 - 400 µV/m
171 kHz
Mod. 400 Hz 30%
Level 300 - 400 µV/m
270 kHz
Mod. 400 Hz 30%
Signal Source Signal Output
Frequency Level and Modulation
999 kHz
500 µV/m (54 dB/m)
(K, KS, N, F)
1000 kHz
(U)
1000 µV/m (60 dB/m)
Signal Source Signal Output
Frequency Level and Modulation
500 µV (54 dB)
98 MHz MONO 1 kHz /
(K, KS, N, U)
Dev.40kHz 53.3% (K, KS, N)
83 MHz MONO 1 kHz /
(F) Dev. 75 kHz 100%
61
Reception Adjustment
Frequency
Tuning point
Reception Adjustment
Frequency
603 kHz
(K, KS, N, F)
600 kHz
(U)
1404 kHz
(K, KS, N, F)
1400 kHz
(U)
Reception Adjustment
Frequency
171 kHz
270 kHz
Reception Adjustment
Frequency
999 kHz
(K, KS, N, F)
1000 kHz
(U)
AUTO
Only Confirm
SCAN
Reception Adjustment
Frequency
98 MHz
(P2)
(U, F)
Adjustment
Point Value
Output level
(L or R)
LA06
Maximum
at TAPE-OUT
Adjustment
Point Value
Output level
(L or R)
LA01
Maximum
at TAPE-OUT
Output level
(L or R)
CA01
Maximum
at TAPE-OUT
Adjustment
Point Value
Output level
(L or R)
LA03
Maximum
at TAPE-OUT
Output level
(L or R)
CA08
Maximum
at TAPE-OUT
Adjustment
Point Value
"TUNED"
RA11
indicate on FLD
"TUNED"
indicate on FLD
Adjustment
Point Value
Distortion level
L201 Minimum
at TAPE-OUT