Read Sharp CD-DVD500 (serv.man22) Service Manual online
CD-DVD500H
– 18 –
fL: Low-range frequency
fH: High-range frequency
• AM adjustment and confirmation
fH: High-range frequency
• AM adjustment and confirmation
Figure 18-3 AM IF
TUNER SECTION
• Setting the Test Mode
While holding down the MEMORY/SET button and the X-
BASS button, press the ON/STAND-BY button. Frequencies
are rewritten in memory as shown in table 18. Call them
using the VOLUME knob of tuner circuit adjustment and
check.
Note that once you reinitialize the settings, the frequencies
recorded by users will be changed.
While holding down the MEMORY/SET button and the X-
BASS button, press the ON/STAND-BY button. Frequencies
are rewritten in memory as shown in table 18. Call them
using the VOLUME knob of tuner circuit adjustment and
check.
Note that once you reinitialize the settings, the frequencies
recorded by users will be changed.
Preset No.
Frequency
P01
87.50 MHz
P06
522 kHz
P02
108.00 MHz
P07
1,620 kHz
P03
90.00 MHz
P08
603 kHz
P04
106.00 MHz
P09
1,404 kHz
P05
98.00 MHz
P10
990 kHz
Adjusting item
Adjusting object
Adjusting
method
IF
T351
Set IF waveform
Adjust the indication
450 kHz to maximum.
of set to 1,620 kHz.
Frequency cover
fL: T306 (522 kHz)
fL: 1.1
±
0.1 V
(VT line voltage of
Adjust the indication
fH: 8.0
±
1.3 V
TP301)
of set to 522 kHz.
(Only confirmation)
fH: (1,620 kHz)
Tracking
fL: T302 (990 kHz)
Set the output of
speaker terminal
to maximum.
speaker terminal
to maximum.
AM signal oscillator Frequency 400 Hz, 30 %, AM modulation
• FM mute level adjustment
Frequency
Adjusting
object
Adjusting
method
98.0 MHz
25 dB(EMF)
VR351
Input: SO301
Output: Speaker
Terminal
Output: Speaker
Terminal
FM signal oscillator Frequency 1 kHz, 40 kHz
Adjusting object
Preset No.
Frequency
Figure 18-2 FM Mute Level
Table 18
Electronic
Voltmeter
Voltmeter
GND
AM Loop Antenna
AM signal oscillator
Loop Antenna
UNIT
IF : Speaker Terminal
Frequency cover: TP301
Frequency cover: TP301
Electronic
Voltmeter
Voltmeter
UNIT
FM signal oscillator
SO301
Speaker
Terminal
Terminal
• Erasing the registered broadcast station
When the power is off, press and hold the TUNER (BAND)
button and the X-BASS button, and then press the POWER
button.
All the registered stations are erased.
When the power is off, press and hold the TUNER (BAND)
button and the X-BASS button, and then press the POWER
button.
All the registered stations are erased.
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
±
30 Hz
Speaker
speed
Resistor in
Terminal
motor.
(Load
resistance:
6 ohms)
resistance:
6 ohms)
•
Tape Speed
Figure 18-1
TAPE MECHANISM
Tape
Motor
Motor
Variable Resistor in motor
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