Mechanism Section Adjustment; Tuner Section Adjustment; Cd Error Code Description - Sharp CD-PC1881V Service Manual

CD-PC1881V
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
Normal MTT-111 Variable
speed Resistor in
motor.
(MM1)
TAPE MECHANISM
Variable Resistor in motor
Figure 12-1
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
(Load
resistance:
8 ohms)
MM 1
Motor
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency
AM IF 450 kHz
AM Band —
Coverage
AM Tracking 990 kHz
*1. Input: Antenna, Output: TP302
*2. Input: Antenna, Output: TP301
• FM
Notes:
1: Description of the "FM IF Adjustment" is not carried on this
Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
2: The parts in the FM front end section are prepared in a
complete unit, so you can't obtain each part individually.
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Frequency
Frequency
Display
98.00 MHz 98.00 MHz
(25 dBµV)
AM IF
IC303
TP302
R357
Figure 12-2 ADJUSTMENT POINTS

CD ERROR CODE DESCRIPTION

When a malfunction occurs during CD operation, an error
code will be displayed to identify the function in CD operation
which failed.
Error
0001
0101
0105
0201
0203
0304
0305
0307
– 12 –
Frequency Setting/
Display Adjusting
Parts
1,602 kHz T351
531 kHz (fL): T306
1.1 ± 0.1 V
990 kHz (fH): T302
Adjusting Instrument
Parts Connection
VR351 Input: Antenna
Output: Speaker
Terminal
TUNER PWB
TP301
FM MUTE R336
LEVEL
VR351
FE301
T351
AM
T306
TRACKING fH
AM BAND
T302
COVERAGE fL
State Code
Cannot detect pickup-in SW
Tray close operation error
Tray close operation error
Tray open operation error
Tray open operation error
Disc skip operation error
Disc skip operation error
Disc skip operation error
Instrument
Connection
*1
*2
*1
SO301
ANTENNA
TERMINAL