Read Sharp XL-505E (serv.man5) Service Manual online
– 9 –
XL-505H,505E,507E/CP-505,505E,507
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
In Motor
3,000
±
Headphones
90 Hz
90 Hz
ADJUSTMENT
Specified Value
• Tape Speed
fL: Low-range frequency
fH: High-renge frequency
fH: High-renge frequency
IF
450 kHz
1,620 kHz
T351
*1
Band
—
522 kHz
(fL): T306
*2
Coverage
1.1
±
0.1 V
Tracking
990 kHz
990 kHz
(fL): T302
*1
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: CNP301
(25 dB
µ
V)
Output: Speaker
Terminal
Terminal
Figure 9-1 ADJUSTMENT POINT
TUNER SECTION
TAPE MECHANISM
M901
Motor
Motor
Volume in motor
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Band
—
87.50 MHz
(fL): L303
*1
Coverage
3.4
±
0.1 V
RF
98.00 MHz
98.00 MHz
L302
*2
(10~30 dB)
Test Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
*1. Input: Antenna,
Output: TP301
*2. Input: Antenna,
Output: Speaker Terminal
• Detection
Signal generator: 10.7 MHz, FM sweep generator
Signal generator: 10.7 MHz, FM sweep generator
IF
10.7 MHz
98.00 MHz
T304(Turn
Input: Pin 1 of
the core of
IC301
T304 fully
Output: TP302
counter-
clockwise.
clockwise.
Test
Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
*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.
AM
1
87.50 MHz
6
522 kHz
2
108.00 MHz
7
1,620 kHz
3
98.00 MHz
8
603 kHz
4
90.00 MHz
9
1,404 kHz
5
106.00 MHz
10
990 kHz
11~40
• 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
CNP301
ANTENNA
ANTENNA
MAIN PWB
L302
IC301
1
T302
TP301
TP302
T304
FM IF
AM IF
AM
TRACKING
TRACKING
T306
AM BAND
COVERAGE
COVERAGE
FM MUTE
LEVEL
LEVEL
T351
VR351
L303
FM BAND
COVERAGE
COVERAGE
FM RF
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Signal generator: 400 Hz, 30%, AM modulated
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