Adjustment - Sharp CD-BA160H Service Manual

CD-BA160H/1700H
MECHANISM SECTION
• Driving Force Check
Torque Meter
Play: TW-2111
• Torque Check
Torque Meter
Play: TW-2111 30 to 80 g. cm
Fast forward: TW-2231 —
Rewind: TW-2231 —
• Tape Speed
Adjusting
Test Tape
Normal MTT-111 Variable
speed Resistor in
motor.
TAPE MECHANISM
Variable Resistor
in motor
Figure 14-1

ADJUSTMENT

Specified Value
Tape 1: Over 80 g
Tape 2: Over 80 g
Specified Value
Tape 1
Tape 2
30 to 80 g.cm
70 to 180 g.cm
70 to 180 g.cm
Specified Instrument
Point Value Connection
3,000 ±
Speaker
30 Hz terminal
(Load
resistance:
6 ohms)
Tape motor
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency
AM IF 450 kHz
AM Band —
Coverage
AM Tracking 990 kHz
*1. Input: Antenna, Output: TP302
*2. Input: Antenna, Output: TP301
• FM
Notes:
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.
2: The parts in the FM front end section are prepared in a
complete unit, so you can't obtain each part individually
SO301
1
R381
TP301
Figure 14-2 ADJUSTMENT POINT
– 14 –
Frequency Setting/
Display Adjusting
Parts
1,620 kHz T351
522 kHz (fL): T306
1.1 ± 0.1 V
990 kHz (fL): T303
CNP301
MAIN PWB
T303
AM
FE301
TRACKING fL
T306
T351
AM IF
TP302
Instrument
Connection
*1
*2
*1
AM BAND
COVERAGE fL
R357