Read Sharp QT-CD210 (serv.man3) Service Manual online
QT-CD210H/W
– 10 –
MECHANISM SECTION
• Driving Force Check
PLAY: TW-2412
Over 120 g
Torque Meter
Specified Value
• Torque Check
Torque Meter
Specified Value
Play: TW-2111
25 to 65 g.cm
Fast Forward: TW-2231
60 to 130 g.cm
Rewind: TW-2231
60 to 130 g.cm
• Tape Speed
MTT-111 Variable
3,000
±
90 Hz
Output: Speaker
resistor in
Teaminal
motor. (M601)
(CNP201 Load
resistance: 4 ohms)
resistance: 4 ohms)
Instrument
Connection
Specified
Value
Test
Tape
TAPE SECTION
Position of each switch or control
Volume control
Max
Function switch
Tape/Power Off
• Bias Oscillation
Adjustment Point
• Playback Amplifier Sensitivity Check
Instrument Connection
Test Tape
MTT-118
1.1 V
±
3 dB
Speaker Terminal
(Load resistance: 4 ohms)
(Load resistance: 4 ohms)
Specified Value
ADJUSTMENT
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
fH: High-range frequency
• FM IF/RF
FM Detection
T2
FM
fL: L2
Band Coverage
fH: TC2
FM Tracking
fL: 88.0 MHz: L1
fH: 108.0 MHz: TC1
fH: 108.0 MHz: TC1
Test Stage
Specified
Value/Adjusting
Point
Instrument
Connection
Input: Pin 1 of IC1
Output: Pin 18 of IC1
Output: Pin 18 of IC1
Iuput: Antenna
Output: Speaker
Terminal (CNP201
Load resistance: 4
ohms)
Output: Speaker
Terminal (CNP201
Load resistance: 4
ohms)
• AM IF/RF
AM IF
T3
Input: Antenna
Output: Pin 18 of IC1
Output: Pin 18 of IC1
AM
fL: L4
Input: Antenna
Band Coverage
fH: TC4
Output: Speaker
AM Tracking
fL: 600 kHz: L3
Terminal (CNP201
fH: 1,400 kHz: TC3
Load resistance: 4
ohms)
ohms)
Test Stage
Specified
Value/Adjusting
Point
Instrument
Connection
Figure 10 ADJUSTMENT POINTS
• Head Azimuth
Torque Meter
Specified Value
MTT-114
Output: Speaker Terminal
(CNP201 Load resistance: 4 ohms)
(CNP201 Load resistance: 4 ohms)
Adjusting
Point
Specified Value
Instrument
Connection
L301
82 kHz
±
6 kHz
Pin 1 of CNP101
TC4
TC2
TC1
TC3
FM ROD
ATENNA
MAIN PWB
1
13
18
AM BAND
COVERAGE
COVERAGE
fL
fH
FM
TRACKING
TRACKING
FM BAND
COVERAGE
COVERAGE
fL
fH
fH
fL
AM IF
FM
DETECTION
DETECTION
L4
12
24
BIAS OSC.
AM
TRACKING
TRACKING
fL
fH
IC803
L2
CNP101
SW102
IC101
CNP201
VR201
SW201
L1
T3
L301
CNP602
T2
IC1
AM BAR
ANTENNA
ANTENNA
1
12
11
2
1
2
3
4
1
1 2 3
L3
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