Adjustment - Sharp CD-C290X Service Manual

CD-C290X
MECHANISM SECTION
• Driving Force Check
Torque Meter
Play: TW-2412
• Torque Check
Torque Meter
Play: TW-2111 30 to 60 g. cm
Fast forward: TW-2231 —
Rewind: TW-2231 —
• Tape Speed
Adjusting
Test Tape
Normal MTT-111 Volume in
speed motor.
(MM1)
TAPE MECHANISM
Volume in motor
TP302
R357

ADJUSTMENT

Specified Value
Tape 1: Over 80 g
Tape 2: Over 80 g
Specified Value
Tape 1
Tape 2
30 to 60 g.cm
60 to 120 g.cm
60 to 120 g.cm
Specified Instrument
Point Value Connection
3,000 ± Speaker
30 Hz terminal
(Load
resistance:
8 ohms)
MM 1
Motor
FM MUTE
LEVEL
AM IF
VR351
T351
AM BAND
COVERAGE
Figure 10 ADJUSTMENT POINTS
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency
IF 450 kHz
AM Band —
Coverage
AM 990 kHz
Tracking
*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
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Frequency
Frequency
Display
98.00 MHz 98.00 MHz
(25 dBµV)
TUNER PWB
TP301
R336
FE301
T306
T302
AM
TRACKING
– 10 –
Frequency
Setting/ Instrument
Display
Adjusting Connection
Parts
1,602 kHz T351 *1
531 kHz (fL): T306 *2
1.1 ± 0.1 V
990 kHz (fL): T302 *1
Adjusting Instrument
Parts Connection
VR351* Input: Antenna
Output: Speaker
Terminal
SO301
ANTENNA
TERMINAL