Adjustment - Sharp CD-C410W Service Manual

CD-C410W/C415W/C420W,CP-C410/C415/SR410
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
Tape MTT-111 Volume in
speed motor.
TAPE MECHANISM
Volume in motor
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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 60 g.cm
60 to 120 g.cm
60 to 120 g.cm
Specified Instrument
Value Connection
3,000 ±
Speaker
30 Hz terminal
(Load
resistance:
8 ohms)
MM 1
Motor
TP301
T351
VR351
AM IF
IC303
AM BAND
COVERAGE fL
Figure 10-1 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
Band —
Coverage
Tracking 990 kHz
*1. Input: Antenna, Output: Speaker Terminal
*2. Input: Input is not connected,
• Setting the Test Mode
Keeping the TUNING (DOWN) button and MEMORY button
pressed, turn on POWER. Then, the frequency is initially set
in the memory as shown in Table. Call it with the PRESET
button to use it for adjustment and check of tuner circuit.
Preset No. FM
1 87.50 MHz
2 108.00 MHz
3 90.00 MHz
4 106.00 MHz
5 98.00 MHz
11 ~ 40
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev. FM modulated.
Frequency Frequency
Display
98.00 MHz 98.00 MHz
(25 dBµV)
*1. Adjust so that an output signal appears
TUNER PWB
FM MUTE
LEVEL
T302
AM TRACKING
fL
– 10 –
Frequency Setting/ Instrument
Display Adjusting Connection
Parts
990 kHz T351 *1
522 kHz (fL): T302 *2
1.1 ± 0.1 V
990 kHz T302 *1
Output: TP301
AM
Preset No.
6 522 kHz
7 1,620 kHz
8 603 kHz
9 1,404 kHz
10 990 kHz
Adjusting Instrument
Parts Connection
VR351 *1 Input: SO301
Output: Speaker
Terminal
S0301
ANTENNA
TERMINAL