Read Sharp XL-515H (serv.man3) Service Manual online
– 9 –
XL-515H,515HR/CP-515
MECHANISM SECTION
• Driving Force Check
Torque Meter
Specified Value
Play: TW-2412
Over 80 g
• Torque Check
Torque Meter
Play: TW-2111
30 to 70 g. cm
Fast forward: TW-2231
50 to 140 g.cm
Rewind: TW-2231
50 to 140 g.cm
Specified
Value
Adjusting
Point
Instrument
Connection
Test Tape
MTT-111
Motor
3,000
±
Headphone
90 Hz
terminal
ADJUSTMENT
Specified Value
• Tape Speed
fL: Low-range frequency
fH: High-renge frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
IF
450 kHz
1,620 kHz
T351
*1
MW Band
—
522 kHz
(fL): T306
*2
Coverage
1.1
±
0.1 V
LW Band
—
153 kHz
(fL): T305
*2
Coverage
1.1
±
0.1 V
MW
990 kHz
990 kHz
(fL): T302
*1
Tracking
LW
225 kHz
225 kHz
(fL): T301
*1
Tracking
Test Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
Adjusting
Parts
Instrument
Connection
Display
Frequency
98.00 MHz
98.00 MHz
VR351*1
Input: SO301
(25 dB
µ
V)
Output: Speaker
Terminal
Terminal
Figure 9-1 ADJUSTMENT POINT
TUNER SECTION
TAPE MECHANISM
M901
Motor
Motor
Volume in motor
*1. Input: Antenna,
Output: Speaker Terminal
*2. Input: Input is not connected,
Output: TP301
• Setting the Test Mode
Keeping the BAND button and MEMORY button pressed, turn
on POWER. Then, the frequency is initially set in the memory
as shown in Table. Call it with the
Keeping the BAND button and MEMORY button pressed, turn
on POWER. Then, the frequency is initially set in the memory
as shown in Table. Call it with the
,
button to use it
for adjustment and check of tuner circuit.
Preset No.
FM
Preset No.
MW
1
87.50 MHz
6
522 kHz
2
108.00 MHz
7
1,620 kHz
3
98.00 MHz
8
990 kHz
4
90.00 MHz
9
603 kHz
5
106.00 MHz
10
1,404 kHz
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Adjust so that an output signal appears.
Figure 9-2 ADJUSTMENT POINTS
MAIN PWB
ANTENNA
TERMINAL
TERMINAL
T351
R331
CNP301
FE301
VR351
FM MUTE
LEVEL
LEVEL
AM IF
TP301
TP302
SO301
T302
T301
MW
TRACKING
TRACKING
T306
MW BAND
COVERAGE
COVERAGE
T305
LW BAND
COVERAGE
COVERAGE
LW
TRACKING
TRACKING
Check Point
Instrument
Connection
Display
Frequency
87.5 MHz
87.5 MHz
2.2 V
±
0.7 V
TP301
108 MHz
108 MHz
7.3 V
±
1.0 V
TP301
• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Preset No.
LW
11
153 kHz
12
281 kHz
13
225 kHz
14
162 kHz
15
261 kHz
Click on the first or last page to see other XL-515H (serv.man3) service manuals if exist.