Adjustment - Sharp CD-C661H Service Manual

CD-C661H/HR
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
Test Tape Adjusting
Normal MTT-111 VRM1
speed
TAPE MECHANISM PWB
VRM1
FAS
SW
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
Value
Point Connection
3,000 ±
Speaker
30 Hz terminal
SWM1
TAPE
SPEED
CNP303
VR351
T351
AM IF
FM MUTE
LEVEL
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
IF
AM Band
Coverage
AM
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
98.00 MHz
(25 dBµV)
TUNER PWB
TP301
R336
FE301
T302
T306
AM BAND
COVERAGE
– 10 –
Frequency Frequency
Display
450 kHz 1,620 kHz
— 522 kHz
990 kHz 990 kHz
Adjusting
Frequency
Parts
Display
98.00 MHz VR351
SO301
FM ANTENNA
TERMINAL
CNP301
AM LOOP
AM
ANTENNA
TRACKING
TERMINAL
Setting/ Instrument
Adjusting Connection
Parts
T351 *1
(fL): T306 *2
1.1 ± 0.1 V
(fL): T302 *1
Instrument
Connection
Input: Antenna
Output: Speaker
Terminal