Sharp XL-MP100H (serv.man5) Service Manual ▷ View online
XL-MP100H
2 – 1
Audio
XL-MP100H
Service Manual
XLMP100H
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
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Torque Meter
Specified Value
Play: TW-2111
Over 80 g
Torque Meter
Specified Value
Play: TW-2111
30 to 80 g.cm
Fast forward: TW-2231
70 to 180 g.cm
Rewind: TW-2231
70 to 180 g.cm
Test Tape
Adjusting
Point
Specified
Value
Instrument
Connection
MTT-111
Variable
Resistor in
motor.
Resistor in
motor.
3,000 ± 30 Hz
Speaker Ter-
minal (Load
resistance: 6
ohms)
minal (Load
resistance: 6
ohms)
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
*2. Input: Input is not connected
Output: TP301(IC301 28Pin)
*3. Input: Antenna
Output:IC301 23Pin
TAPE MECHANISM
M501
Tape
Motor
Variable
resistor
in motor
L302
J102
J301
FE301
L311
W303
L306
CNP301
CF301
CF304
L305
CF303
W302
X351
IC351
CF302
MAIN PWB
1
2
16
9
10
11
12
13
14
15
11
12
13
14
15
7
6
5
4
3
2
6
5
4
3
2
8
1
FM ANTENNA
AM LOOP ANTENNA
VIDEO/AUX
IN
LEFT
RIGHT
75 OHMS
W302
W303
W301
AM BAND
COVERAGE fL
AM
Tracking
AM IF
C321
23
TP301
IC301
Figure 2 ADJUSTMENT POINTS
XL-MP100H
2 – 2
3. CD SECTION
• Adjustment
Since this CD system incorporates the following automatic adjust-
ment functions, readjustment is not needed when replacing the
pickup. Therefore, different PWBs and pickups can be combined
freely.
ment functions, readjustment is not needed when replacing the
pickup. Therefore, different PWBs and pickups can be combined
freely.
Each time a disc is changed, these adjustments are performed
automatically. Therefore, playback of each disc can be performed
under optimum conditions.
automatically. Therefore, playback of each disc can be performed
under optimum conditions.
[2] TEST MODE
Test Mode Key Operation
All test modes can be terminated by turning off the power with ON/STAND-BY key.
• Preset clear test
All tuner preset stations are cleared.
• Preset set test
Stations are set according to destination.
• Display test
When test mode is activated, the entire display lights up. As the “PLAY” button is pressed, half of the display lights up alternately.
• CD test
In step 5, hold down the AUX button on the remote control. The tracking servo is switched on/off.
From step 3, the pick up can be moved with the FF/REW button.
KEY1
KEY2
KEY3
TEST CONTENTS
INDICATION
Memory
Preset Down
Power
Preset clear
Tu CL
Memory
Stop
Power
Preset set
FM P-01
Memory
Play
Power
Display
Memory
Preset up
Power
CD
TEST-1
Memory
REC
Power
Soft reset
CLEAR
Bass/treble
Preset down
Power
Volume
TEST-3
Bass/treble
Play
Power
Timer test
TEST-4
Bass/treble
TAPE-REC
Power
all key
TEST-6
Bass/treble
Stop
Power
Tuner aspm
TEST-7
CH
BAND
FREQUENCY
1
FM STEREO
FM 87.50 MHz
2
FM 108.00 MHz
3
FM 98.00 MHz
4
FM 90.00 MHz
5
FM 106.00 MHz
1
AM
AM 522 kHz
2
AM 1620 kHz
3
AM 990 kHz
4
AM 603 kHz
5
AM
AM 1404 kHz
AM6-30
FM11-30
·
35
36
36
FM MONO
FM 106.00 MHz
37
FM 90.00 MHz
38
FM 98.00 MHz
39
FM 108.00 MHz
40
FM 87.50 MHz
CH
BAND
FREQUENCY
[cd step 1] Enter test mode.
←———————
↓ Hold down the “memory” button
[cd step 2] After some steps, the laser turns on.
↓ Hold down the “memory” button
[cd step 3] After some steps, focus search is performed.
↓ Hold down the “memory” button
[cd step 4] After some steps, CLV rotation is performed.
↓ Hold down the “memory” button
[cd step 5] CD playback starts.
↓ Hold down the “stop” button to return to [cd step 1] ––––––––––
XL-MP100H
2 – 3
• Soft reset test
All data in RAM is cleared.
• VOLUME test
Starting from level 23 (default), check all the levels (0 - 23 - MAX).
• Tuner aspm test
106.50 MHz FM stereo is set by default. Hold down the “ASPM” button (on the remote control) to start scanning from 105.00 MHz. The unit
receives stations and stores them as PS (preset stations).
receives stations and stores them as PS (preset stations).
If no station is received, “0MEMORY” appears.
• TIMER test
Start the timer at 1:00. When it reaches 1:05, turn on the power with the AUX function and turn off the power after about 30 seconds.
(In the test mode, fade-in and fade-out are not required.)
• ALL KEY test
In the test mode, hold down all the buttons on the main unit and then press the “POWER” button. “OK” appears.
If only the “ON/STAND-BY” key is pressed, “ERROR” appears.
Display
