CD-CH1000
– 20 –
MECHANISM SECTION
• Driving Force Check
Torque Meter
Specified Value
Play: TW-2412
Over 80 g
• Torque Check
Torque Meter
Play: TW-2111
30 to 60 g. cm
Fast forward: TW-2231
60 to 120 g.cm
Rewind: TW-2231
60 to 120 g.cm
Specified
Value
Adjusting
Point
Instrument
Connection
Test Tape
ADJUSTMENT
Specified Value
• Tape Speed
TUNER SECTION
Figure 20-2 ADJUSTMENT POINTS
MTT-111
Variable
3,000
±
90 Hz
Speaker
resistor in
terminal
motor.
Adjusting
Parts
Display
Frequency
• FM Mute Level (FM ST MODE)
Signal generator: 1 kHz, 40 kHz dev., FM modulated
*1. Adjust so that an output signal appears.
98.00 MHz
98.00 MHz
VR351*1
Input:CNP303
(26 dB
µ
V)
Output: Speaker
Terminal
Instrument
Connection
*1. Input: Antenna
Output: Speaker Terminal
*2. Input: Antenna
Output: TP301
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
AM IF
450 kHz
1,720 kHz
T351
*1
AM Band
—
530 kHz
(fL): T306
*2
Coverage
1.1
±
0.1 V
AM
990 kHz
990 kHz
T302
*1
Tracking
fL: Low-range frequency
fH: High-range frequency
Signal generator: 400 Hz, 30%, AM modulated
• AM IF/RF
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
FM Band
—
87.50 MHz
(fL): T311
*1
Coverage
1.3
±
50mV
FM RF
98.00 MHz
98.0 MHz
L312
*2
(10~30 dB)
Test Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
*1. Input: Antenna
Output: TP301
*2. Input: Antenna
Output: Speaker Terminal
Figure 20-1 ADJUSTMENT POINT
TAPE MECHANISM
Variable
Resistor
in motor
Tape motor
IC303
IC302
BI960
IC301
15
1
1
12
13
24
1
9
3
2
1
AM
FM
GND
CF352
T306
T302
T311
L312
BF301
MAIN PWB
FM Mute
Level
AM IF
TP301
CNP303
FM/AM
ANTENNA
SOCKET
AM
Tracking
AM Band
Coverage fL
FM Band
Coverage fL
FM RF
FM IF
VR351
T351
T312
R345
CNP303
Summary of Contents for CD-CH1000
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Page 79: ...CD CH1000 16 M E M O ...