Read Sony EXR-105 / XR-3740 Service Manual online
MICROFILM
EXR-105/XR-3740
SERVICE MANUAL
SPECIFICATIONS
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
MG-25A-136
US Model
Canadian Model
EXR-105
E Model
XR-3740
Photo: XR-3740
FM/AM CASSETTE CAR STEREO
Cassette player section
Tape track
4-track 2-channel stereo
Wow and flutter
0.08% (WRMS)
Frequency response
30 – 18,000 Hz
Signal-to-noise ratio
58 dB
Tuner section
FM
Tuning range
87.5 – 107.9 MHz
Aerial terminal
External antenna connector
Intermediate frequency
10.7 MHz
Usable sensitivity
8 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
65 dB (stereo),
68 dB (mono)
68 dB (mono)
Harmonic distortion at 1 kHz
0.5% (stereo),
0.3% (mono)
0.3% (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
Capture ratio
2dB
AM
Tuning range
530 – 1,710 kHz
Antenna terminal
External antenna connector
Intermediate frequency
10.71 MHz/450 kHz
Sensitivity
30 µV
Power amplifier section
Outputs
Speaker outputs
(sure seal connectors)
(sure seal connectors)
Speaker impedance
4 – 8 ohms
Maximum power output
35 W
×
4 (at 4 ohms)
General
Outputs
Power antenna control lead/
Power amplifier control lead/
Telephone mute control lead (XR-3740 only)
Rear line out (1)
Power amplifier control lead/
Telephone mute control lead (XR-3740 only)
Rear line out (1)
Tone controls
Bass ± 8 dB at 100 Hz
Treble ± 8 dB at 10 kHz
Treble ± 8 dB at 10 kHz
Power requirements
12 V DC car battery (negative ground)
Dimensions
Approx. 188
×
58
×
184 mm (w/h/d)
Mounting dimensions
Approx. 182
×
53
×
164 mm (w/h/d)
Mass
Approx. 1.3 kg
Supplied accessories
Parts for installation and connections (1 set)
Front panel case (1)
Front panel case (1)
Design and specifications are subject to change without notice.
– 2 –
TABLE OF CONTENTS
1.
GENERAL
Location of Controls ........................................................ 3
Getting started ................................................................. 3
Setting the Clock ............................................................. 4
Adjusting the Sound Characteristics ............................... 4
Muting the Sound ............................................................ 4
Changing the Sound and Beep Tone ................................ 4
Installation ....................................................................... 5
Connections ..................................................................... 6
Getting started ................................................................. 3
Setting the Clock ............................................................. 4
Adjusting the Sound Characteristics ............................... 4
Muting the Sound ............................................................ 4
Changing the Sound and Beep Tone ................................ 4
Installation ....................................................................... 5
Connections ..................................................................... 6
2.
DISASSEMBLY
.......................................................... 8
3.
ASSEMBLY OF MECHANISM DECK
........... 10
4.
MECHANICAL ADJUSTMENTS
....................... 13
5.
ELECTRICAL ADJUSTMENTS
......................... 13
6.
DIAGRAMS
6-1. IC Pin Function Description ............................................ 14
6-2. Printed Wiring Board – MAIN Section – ....................... 19
6-3. Schematic Diagram – MAIN Section – .......................... 21
6-4. Printed Wiring Board – KEY Section – ......................... 25
6-5. Schematic Diagram – KEY Section – ............................ 27
6-2. Printed Wiring Board – MAIN Section – ....................... 19
6-3. Schematic Diagram – MAIN Section – .......................... 21
6-4. Printed Wiring Board – KEY Section – ......................... 25
6-5. Schematic Diagram – KEY Section – ............................ 27
7.
EXPLODED VIEWS
................................................ 29
8.
ELECTRICAL PARTS LIST
................................ 32
SERVICING NOTES
Flexible Circuit Board Repairing
•
Keep the temperature of the soldering iron around 270 ˚ C dur-
ing repairing.
ing repairing.
•
Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
circuit board (within 3 times).
•
Be careful not to apply force on the conductor when soldering
or unsoldering
or unsoldering
Notes on chip component replacement
•
Never reuse a disconnected chip component.
•
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
aged by heat.
– 3 –
SECTION 1
GENERAL
This section is extracted
from instruction manual.
– 4 –
