Sharp XL-30H Service Manual

– 13 –
XL-30H/30W
MECHANISM SECTION
• Driving Force Check
Torque Meter
Specified Value
Play: TW-2412 Over 80 g
• Torque Check
Torque Meter
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
Specified
Value
Adjusting
Point
Instrument
Connection
Test Tape
ADJUSTMENT
Specified Value
• Tape Speed
TUNER SECTION
MTT-111 Variable 3,000 ± Headphone
resistor in 90 Hz terminal
motor.(M901)
Adjusting
Parts
Display
Frequency
• FM Mute Level (For XL-30W)
Signal generator: 1 kHz, 40 kHz dev., FM modulated
*1. Adjust so that an output signal appears.
Check Point Instrument
Connection
Display
Frequency
87.5 MHz 87.5 MHz 3.4 V ± 1.0 V TP301
108 MHz 108 MHz 7.8 V ± 1.0 V TP301
• Check FM VT (XL-30H/30W)
Signal generator: 1 kHz, 40 kHz dev., FM modulated
98.00 MHz 98.00 MHz VR351*1 Input: SO301
(25 dBµV) Output: Speaker
Terminal
Instrument
Connection
Frequency Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
IF 450 kHz 1,620 kHz T351 *1
AM Band — 522 kHz (fL): T306 *2
Coverage 1.1 ± 0.1 V
AM 990 kHz 990 kHz T302 *1
Tracking
fL: Low-renge frequency
fH: High-renge frequency
Signal generator: 400 Hz, 30%, AM modulated
• AM IF/RF (For XL-30H)
AM IF 450 kHz 1,602 kHz T351 *1
AM Band — 531 kHz (fL): T306 *2
Coverage 1.1 ± 0.1 V
AM Tracking 990 kHz 990 kHz 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
(30 dBµV) Output: Speaker
Terminal
• FM RF (XL-30H/W)
Signal generator: 1 kHz, 75 kHz dev., FM modulated
FM Band — 87.50 MHz (fL): L303 *1
Coverage 3.4 ± 0.1 V
FM 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
• FM Detection (XL-30H/W)
Signal generator: 10.7 MHz, FM sweep generator
FM IF 10.7 MHz 98.00 MHz T304(Turn Input: Pin 1 of
the core of IC301
T304 fully
counter-
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
• FM Mute Level (For XL-30H)
Signal generator: 1 kHz, 40 kHz dev., FM modulated
*1. Adjust so that an output signal appears.
• AM IF/RF (For XL-30W)
Signal generator: 400 Hz, 30%, AM modulated
Span selectors are to be 9 kHz (AM), 50 kHz (FM).
Figure 13-1 ADJUSTMENT POINT
Figure 13-2 ADJUSTMENT POINTS
TAPE MECHANISM
M901
Tape
Motor
Variable
resistor
in motor
IC303
IC302
CF352
R336
T306
VR351
T302
T304
L303
IC301
L302
BF301
T351
1
9
MAIN PWB
ANTENNA
SOCKET
FM Mute
Level
AM IF
TP301
CNP301
AM
Tracking
AM Band
Coverage fL
FM Band
Coverage fL
FM RF
FM IF
SO301
ANTENNA
SOCKET
(XL-30W
Only)

Sharp XL-30H Specifications

General

Brand	Sharp
Model	XL-30H
Category	Stereo System
Language	English