Adjustment - Sharp CD-C440W Service Manual

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CD-C440W/CP-C440W
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
Point
Normal
MTT-111
VRM1
speed
TAPE
SPEED
VRM1
TAPE MECHANISM PWB
IC303
TP302
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ADJUSTMENT

Specified Value
Tape 1: Over 80 g
Tape 2: Over 80 g
Specified Value
Tape 1
Tape 2
30 to 100 g.cm
50 to 100 g.cm
50 to 100 g.cm
Specified
Instrument
Value
Connection
3,000 ±
Speaker
30 Hz
terminal
VR351
FM MUTE
T351
LEVEL
AM IF
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
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

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