Sharp CMS-N45H Serviceanleitung Seite 12

CMS-N45H
TUNER SECTION
fL: Low-range frequency
fH: High range frequency
• AM IF
Signal generator:- 400 Hz, 30%, AM
Test Stage
Frequency
450 kHz 1,611 kHz
MW Band
522
Coverage
603 kHz
603
MW
Tracking
1 ,404 kHz
1 ,404 kHz
LW Band
153 kHz
Coverage
162 kHz 162
LW
Tracking
261 kHz
261
*I. Input: Antenna
Output: TP71
*2. Input: Antenna
Output: TP16
FM
Note:
1: Description of the ''FM IF Adjustment"is not carriedon this
Manual. I t is because the IF coil in theFMfront endsection
hasbeen bestadjusted i n thefactorysothat itsfurtheradjust-
mentis not needed at the field. Whenreplacing the FMfront
end assembly,no adjustment is neededeither.
2: Thepartsin the FM frontendsection areprepared i n acom-
pleteunit,soyoucan'tobtaineachpartindividually.
FM IF
Signal generator: I kHz, 40 kHz dev., FM modulated
Frequency
Test Stage Frequency
10.7 MHz
108.0
*1. Input: TP5(Pin 7 of FEI)
Output: TP70
• FM Auto Scan DC Voltage/Distortion
Signal generator: I kHz, 40 kHz dev., FM modulated
Frequency
Frequency
Display
98.0 MHz
98.0 MHz
(60 dB)
*I Adjust the 140 so that voltmeter reads O ± 50 mV.
VR41: Center
• FM Auto Stop Level
Signal generator: I kHz, 40 kHz dev., FM modulated
Frequency
Frequency
Display
98.0 MHz
98.0 MHz
(25 dB)
*l Adjustthe VR41so that speakeroutputis appear.
modulated
Setting/
Frequency
Instrument
Adjusting
Display
Connection
Parts
T41
123:
kHz
1.1 ± 0.1 v
kHz L21 (fL)
*I
TC20 (fH)
L24:
1.5 ± 0.1 v
kHz
L22 (fL)
kHz
TC21 (fH)
Setting/
Instrument
Adi usting
Display
Connection
Parts
MHz
L40
Adjusting
Instrument
Parts
Connection
Input: Antenna
Output:
TP40, TP41
Adjusting
Instrument
Parts
Connection
Input: Antenna
Output:
Speaker output
MAIN
IC70
30
41
I cao
•rp 40
7
R23
TC21 •rceo
Figure 14 ADJUSTMENT
CNP331
, 13
VR531
VRS32€g
POINTS