Read Sharp CD-BA160 (serv.man4) Service Manual online
CD-BA160H/1700H
– 14 –
•
AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna,
Output: TP302
*2. Input: Antenna,
Output: TP301
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
fH: High-range frequency
AM IF
450 kHz
1,620 kHz
T351
*1
AM Band
—
522 kHz
(fL): T306
*2
Coverage
1.1
±
0.1 V
AM Tracking 990 kHz
990 kHz
(fL): T303
*1
Figure 14-2 ADJUSTMENT POINT
Test Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
•
FM
Notes:
1: Description of the "FM IF Adjustment" is not carried on this
1: Description of the "FM IF Adjustment" is not carried on this
Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
2: The parts in the FM front end section are prepared in a
complete unit, so you can't obtain each part individually
FE301
AM IF
T303
T306
AM
TRACKING fL
AM BAND
COVERAGE fL
T351
MAIN PWB
1
SO301
R381
TP302
R357
TP301
CNP301
ADJUSTMENT
MECHANISM SECTION
•
Driving Force Check
Torque Meter
Specified Value
Play: TW-2111
Tape 1: Over 80 g
Tape 2: Over 80 g
Tape 2: Over 80 g
•
Torque Check
Torque Meter
Tape 2
Play: TW-2111
30 to 80 g. cm
30 to 80 g.cm
Fast forward: TW-2231
—
70 to 180 g.cm
Rewind: TW-2231
—
70 to 180 g.cm
Specified Value
Tape 1
Specified
Value
Adjusting
Point
Instrument
Connection
Test Tape
Normal
MTT-111
Variable
3,000
±
Speaker
speed
Resistor in
30 Hz
terminal
motor.
(Load
resistance:
6 ohms)
resistance:
6 ohms)
•
Tape Speed
Figure 14-1
TAPE MECHANISM
Variable Resistor
in motor
in motor
Tape motor
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