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CD-MPS440W
2 – 1
CD-MPS440W
Service Manual
CHAPTER 2.
ADJUSTMENTS
[1] ADJUSTMENT
1. MECHANISM SECTION
•
Driving Force Check
•
Torque Check
•
Tape Speed
2. TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
•
AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
•
Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
•
FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
*1. Adjust so that an output signal appears.
•
FM Detection
Signal generator: 10.7MHz FM modulated
•
FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Torque Meter
Specified Value
Play: DM-300
Tape 1: Over 80 g
Tape 2: Over 80 g
Torque Meter
Specified Value
Tape 1
Tape 2
Play: DM-300
10 to 20 g.cm
10 to 20 g.cm
Fast forward: DM-300
—
Over 50 g.cm
Rewind: DM-300
—
Over 50 g.cm
Test Tape
Adjust-
ing Point
Specified
Value
Instrument
Connection
Tape
speed
TCC-119
Variable
Resistor in
motor.
3,000
±
30 Hz Speaker Ter-
minal (Load
resistance: 6
ohms)
Figure 1 ADJUSTMENT POINTS
Test Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
IF
450 kHz
1,620 kHz
T351
*1
AM Band
Coverage
—
522 kHz
(fL): T306
1.1 ± 0.1 V
*2
AM Tracking
990 kHz
990 kHz
T302
*1
*1. Input: Antenna
Output: Speaker terminal
*2. Input: Input is not connected
Output: TP301
Tape
Motor
Variable Resistor in Motor
TAPE MECHANISM
Frequency
Display
Check
Point
Instrument
Connection
87.5 MHz
87.5 MHz
2.2V ± 1.0V
TP301
108 MHz
108 MHz
7.8V ± 1.0V
TP301
Frequency
Display
Adjusting
Parts
Instrument
Connection
98.00 MHz
98.00 MHz
(30 dB
µ
V)
VR351*1
Input: CNP301
Output: Speaker Terminal
Test
Stage
Frequency
Frequency
Display
Setting/
Adjusting
Point
Instrument
Connection
FM IF
10.7 MHz
98.00 MHz
T304
(Turn the
core of trans-
former T304
fully counter-
clockwise)
Input: Pin 1
of IC301
Test
Stage
Frequency
Frequency
Display
Setting/
Adjusting
Point
Instrument
Connection
FM Band
Coverage
—
87.50 kHz
(fL):L303
3.4 ± 0.1 V
*1
FM RF
98.00 MHz
(10-30 dB)
98.00 MHz
L302
*2
*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal
Figure 2 ADJUSTMENT POINTS
TP302
MAIN PWB
T351
T306
T304
L303
L302
T302
IC301
CNP301
IC302
VR351
FM MUTE
Level
FM BAND
COVERAGE fL
FM
IF
FM RF
AM TRACKING
fL
AM BAND
COVERAGE fL
AM IF
R381
TP301
R357
R356
Summary of Contents for CD-MPS440W
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