Adjustment - Sharp QT-CD210H(BL) Serivce Manual

QT-CD210H/W
MECHANISM SECTION
• Driving Force Check
Torque Meter
PLAY: TW-2412
• Torque Check
Torque Meter
Play: TW-2111
Fast Forward: TW-2231
Rewind: TW-2231
• Head Azimuth
Torque Meter
MTT-114
• Tape Speed
Adjusting
Test
Point
Tape
3,000 ± 90 Hz
MTT-111 Variable
resistor in
motor. (M601)
TAPE SECTION
Position of each switch or control
Volume control
Function switch
• Bias Oscillation
Adjustment Point Specified Value
82 kHz ± 6 kHz
L301
• Playback Amplifier Sensitivity Check
Test Tape Specified Value
1.1 V ± 3 dB
MTT-118
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• FM IF/RF
Test Stage Specified
Value/Adjusting
FM Detection T2
FM fL: L2
Band Coverage fH: TC2
FM Tracking fL: 88.0 MHz: L1
fH: 108.0 MHz: TC1

ADJUSTMENT

Specified Value
Over 120 g
Specified Value
25 to 65 g.cm
60 to 130 g.cm
60 to 130 g.cm
Specified Value
Output: Speaker Terminal
(CNP201 Load resistance: 4 ohms)
Specified Instrument
Value Connection
Output: Speaker
Teaminal
(CNP201 Load
resistance: 4 ohms)
Max
Tape/Power Off
Instrument
Connection
Pin 1 of CNP101
Instrument Connection
Speaker Terminal
(Load resistance: 4 ohms)
Instrument
Connection
Point
Input: Pin 1 of IC1
Output: Pin 18 of IC1
Iuput: Antenna
Output: Speaker
Terminal (CNP201
Load resistance: 4
ohms)
• AM IF/RF
Test Stage
AM IF T3
AM fL: L4
Band Coverage fH: TC4
AM Tracking fL:
fH: 1,400 kHz: TC3
L301
BIAS OSC.
1
CNP602
FM ROD
IC803
ATENNA
MAIN PWB
T2
FM
T3
DETECTION
12
IC1
13
18
L2
L4
AM BAR
ANTENNA
fL
AM BAND
COVERAGE
Figure 10 ADJUSTMENT POINTS
– 10 –
Instrument
Specified
Value/Adjusting Connection
Point
Input: Antenna
Output: Pin 18 of IC1
Input: Antenna
Output: Speaker
600 kHz: L3 Terminal (CNP201
Load resistance: 4
ohms)
CNP101 2
4 3 1
SW102
11 1
IC101
12 2
VR201
AM IF
FM BAND
1 COVERAGE
fL fH
fH FM
24
TRACKING
fL
TC2
TC4
L1
TC1
TC3
fH AM
TRACKING
fL
fH
L3
CNP201
1 2 3
SW201