Sony HDR XR 105 E User manual

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)
Harmonic distortion at 1 kHz
0.5% (stereo),
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)
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)
Tone controls Bass ± 8 dB at 100 Hz
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)
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
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
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.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
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.

– 3 –
SECTION 1
GENERAL This section is extracted
from instruction manual.

– 4 –

– 5 –

– 6 –

– 7 –

– 8 –
Note: Follow the disassembly procedure in the numerical order given.
FRONT PANEL ASS’Y
SECTION 2
DISASSEMBLY
2
1
1
2
1 Push the button
(release).
2 Remove the front panel ass’y
to the direction of the arrow A .
A
COVER ASS’Y
1
2
3 cover ass’y

– 9 –
MAIN BOARD, HEAT SINK
2 two ground point
screws
4 seven screws
(PTT2.6 × 10)
1 screw
(PTT2.6 × 8)
5 heat sink
3 main board
1 two screws
(PTT2.6 × 8)
SUB PANEL, MECHANISM DECK (MG-25A-136) 5
screw
(PTT2.6 × 6)
6 mechanism deck
(MG-25A-136)
4 flexible flat cable
(CN301)
1 three screws
(PTT2.6 × 8)
1 three screws
(PTT2.6 × 8)
2 sub panel
3 connector
(CN302)

– 10 –
SECTION 3
ASSEMBLY OF MECHANISM DECK
Note: Follow the assembly procedure in the numerical order given.
2 Install the hanger onto
two claws of the housing.
1 Install the catch to the hanger.
7 Holder the hanger by bending the claw.
A part
B part
C part
D part
8 Hold the hanger by
bending the claw.
3 Put the housing
under A part.
4 Fit claw on B part.
6 Fit projection on D part.
5 Fit projection on C part.
hanger
HOUSING
housing
2 Move the arm (suction) in the arrow
direction and fit on projection.
1 Fit the arm (suction) on the shaft.
projection
ARM (SUCTION)