Read Sharp XL-MP40H (serv.man3) Service Manual online
XL-MP40H
2 – 1
Audio
XL-MP40H
Service Manual
XLMP40H
Market
E
CHAPTER 2.
ADJUSTMENTS
[1] ADJUSTMENT
1. MECHANISM SECTION
• Driving Force Check
• Torque Check
• Tape Speed
2. TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
• FM Detection
Signal generator: 10.7 MHz FM sweep generator
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Torque Meter
Specified Value
Play: TW-2412
Over 80 g
Torque Meter
Specified Value
Play: TW-2111
30 to 60 g.cm
Fast forward: TW-2231
55 to 140 g.cm
Rewind: TW-2231
55 to 140 g.cm
Test Tape
Adjusting
Point
Specified Value
Instrument
Connection
MTT-111
Variable Resis-
tor in motor.
tor in motor.
3,000 ± 30 Hz
Headphone
Terminal
Terminal
Figure 1
Test Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
IF
450 kHz
1,602 kHz
L305
*1
AM Band
Coverage
Coverage
—
522 kHz
(fL): L306
1.1 ± 0.1 V
1.1 ± 0.1 V
*2
AM Tracking
990 kHz
990 kHz
L302
*3
*1. Input: IC301 1Pin
Output: IC301 23Pin
*2. Input: Input is not connected
Output: TP-VT (IC301 28Pin)
*3. Input: Antenna
Output:IC301 23Pin
Frequency
Display
Check Point
Instrument
Connection
87.5 MHz
87.5 MHz
1.5V ± 1.0V
TP-VT
108 MHz
108 MHz
5.0V ± 1.0V
TP-VT
TAPE MECHANISM
M901
Tape
Motor
Tape
Motor
Variable
resistor
in motor
resistor
in motor
Frequency
Display
Adjusting
Parts
Instrument
Connection
98.00 MHz
(30 dB
(30 dB
µV)
98.00 MHz
-
Input: CNP301
Output: Speaker Terminal
Output: Speaker Terminal
Test
Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
FM IF
10.7 MHz
98.00 MHz
-
Input: Pin 36 of
IC301
Output: Pin 23
of IC301
IC301
Output: Pin 23
of IC301
Test
Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
FM Band
Coverage
Coverage
—
87.50 MHz
(fL): L307
1.5 ± 0.1 V
1.5 ± 0.1 V
*1
FM RF
98.00 MHz
(10 ~ 30dB)
(10 ~ 30dB)
98.00 MHz
L304
*1
*1. Input: Antenna
Output: 23 Pin of IC301
Figure 2 ADJUSTMENT POINTS
AM ANT.
FM OSC.
TP-VT=28Pin
28
23
36
AM BAND
COVERAGE fL
COVERAGE fL
FM RF
AM
Tracking
FM BAND
COVERAGE fL
COVERAGE fL
MAIN PWB-A1
AM IF
Click on the first or last page to see other XL-MP40H (serv.man3) service manuals if exist.