Adjustment - Sharp CD-C5H Service Manual

CD-C5H,CP-C5H
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 60 to 120 g.cm
Rewind: TW-2231 60 to 120 g.cm
• Tape Speed
Adjusting
Test Tape
Normal MTT-111 VRM01
speed
TAPE SECTION
Position of each switch or control
Volume
3D Surround Mode Button
Pre-programmed Equalizer
Extra Bass
Function
Dolby NR switch
X-Bass
RECORD
TP490 2 PIN OR 4 PIN
MODE
UNIT
TP490 3 PIN
Figure 12-1 BIAS CURRENT

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
Point
3,000 ±
Speaker
30 Hz terminal
MAX
PASS
FLAT
OFF
TAPE
OFF
OFF
ELECTRONIC
VOLTMETER
GND
VR101
TP490
VR102
1 2 3 4
R-CH BIAS
CNP102
CURRENT
1 2 3 4 5 6 7
CNP101
3 2 1
WTM1
Figure 12-2 ADJUSTMENT POINTS
• Bias Frequency
Adjusting Point
—
• Bias Current
Adjusting Point
L: VR101
R: VR102
• Tape 1 Playback Amplifier Sensitivity
Test Tape
MTT-150
• Tape 2 Playback Amplifier Sensitivity
Test Tape
MTT-150
• Record/Playback Sensitivity
Test Tape
UR-127
MAIN PWB
VR152 VRD02 VRD04
R-CH REC/
PLAY SENS.
L-CH BIAS
CURRENT
WTM2
VRM01
TAPE SPEED
– 12 –
Specified Value
98 ± 10 kHz
Specified Value
Normal: 38 ± 10 mV
: 55 ± 15 mV
CrO
2
Adjusting
Specified Value
Point
L: VRD01
Normal: 300 mV
R: VRD02
Adjusting
Specified Value
Point
L: VRD03
Normal: 300 mV
R: VRD04
Adjusting
Specified Value
Point
Record level
215 mV
control
L: VR151
215 mV
R: VR152
TAPE2 PLAY
R-CH SENS.
TAPE1 PLAY
R-CH SENS. VRD03
TAPE2 PLAY
L-CH SENS.
VR151
VRD01
TP451
1 2 3
L-CH REC/
PLAY SENS.
TAPE1 PLAY
L-CH SENS.
CFW2
CNP851
Instrument
Connection
CNP102 1
Instrument
Connection
L: TP490 4
R: TP490 2
Instrument
Connection
L: TP451 3
R: TP451 1
Instrument
Connection
L: TP451 3
R: TP451 1
Instrument
Connection
Input: VIDEO
Output:
L: TP451 3
R: TP451 1