Chapter 2. Adjustments; Mechanism Section; Tuner Section - Sharp CD-ES600 Service Manual

CD-ES600/CD-ES66
CD-ES600/CD-ES66 CHAPTER 2. E Market CD-ES600/CD-ES66 Service Manual
ADJUSTMENTS

[1] Mechanism section

• Driving Force Check
Torque Meter
Play: TW-2111
• Torque Check
Torque Meter
Play: TW-2111 30 to 80 g.cm
Fast forward: TW-2231 —
—
• Tape Speed
Test Tape Adjust-
ing Point
Normal MTT-111 Variable
speed Resistor in
motor.
TAPE MECHANISM
Tape
Motor
Figure 1

[2] Tuner section

fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency Frequency
Display
AM IF 450 kHz 1,720 kHz
AM Band — 530 kHz
Coverage
AM 990 kHz 990 kHz
Tracking
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
Specified Value
Tape 1: Over 80 g
Tape 2: Over 80 g
Specified Value
Tape 1 Tape 2
30 to 80 g.cm
70 to 180 g.cm
70 to 180 g.cm
Specified Instrument
Value Connection
3,000 ± 30 Hz
Speaker Ter-
Speaker minal (Load
resistance: 6
ohms)
Variable Resistor in motor
Setting/ Instrument
Adjusting Connection
Parts
T351 *1
(fL): T306 *2
1.1 ± 0.1 V
(fL): T303 *1
• FM RF
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Test Frequency
Stage
FM Band —
Coverage
FM RF 98.00 MHz
(10-30 dB)
*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal
• FM IF
Signal generator: 10.7 MHz, FM modulated
Test Frequency Frequency
Stage
IF 10.7 MHz 98 MHz
MAIN PWB
1
T303
AM TRACKING
fL
Figure 2 Adjustment Points
2 – 1
Frequency Setting/
Display Adjusting
Point
87.50 MHz T301 (fL):
1.3 V ± 0.1 V
98.00 MHz L312
Setting/Adjust-
Display ing Point Connection
T302 (Turn the *1
core of trans-
former T302
fully counter
clockwise)
FM BAND
COVERAGE fL
R381
TP301
T301
T351
AM IF
T302
FM IF
FM RF
L312
R356
T306
TP302
AM BAND
COVERAGE fL
Instrument
Connection
*1
*2
Instrument