CX-LEM300, XR-EM300 — Sony Car Audio Service Manual (repair manual)

Model
CX-LEM300 XR-EM300
Pages
40
Size
3.22 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cx-lem300-xr-em300.pdf
Date

View Sony CX-LEM300 / XR-EM300 Service Manual online

CX-LEM300
AEP Model
 UK Model
SERVICE MANUAL
MICRO HI-FI COMPONENT SYSTEM
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-877-162-03
2004H16-1
© 2004.08
CX-LEM300 is the Amplifier, CD player, Tape
Deck and Tuner section in XR-EM300.
SPECIFICATIONS
Ver 1.2  2004.08
Model Name Using Similar Mechanism
NEW
CD
CD Mechanism Type
KSM-213EDP
Section
Base Unit Name
BU-K7BD44B
Optical Pick-up Name
KSS-213E/C2N
TAPE
Model Name Using Similar Mechanism
NEW
Section
Tape Transport Mechanism Type
CMAL5Z220A
TUNER
FM tuning range
87.5 MHz to 108 MHz
FM usable sensitivity (IHF)
16.8 dBf
FM antenna terminal
75 
Ω (unbalanced)
MW tuning range
531 kHz to 1710 kHz
AM usable sensitivity
350 
µV/m
AM antenna
Loop antenna
AMPLIFIER
Power output
Rated: 12 W + 12 W(6 
Ω, T.H.D. 1 %,
1 kHz/DIN 45500)
Reference: 15 W + 15 W(6 
Ω, T.H.D.
10 %, 1 kHz/DIN 45324)
MUSIC POWER
30 W + 30 W
Input
AUX IN: 800 mV
Outputs
SPEAKERS: 6 
Ω or more
PHONES: 32 
Ω or more
CASSETTE DECK
Track format
4 tracks, 2 channels stereo
Frequency response
50 Hz – 10000 Hz
Recording system
AC bias
Heads
Recording/playback 
× 1, erase × 1
CD PLAYER
Laser
Semiconductor laser (
λ = 780 nm)
Emission duration: continuous
D/A converter
1 bit dual
Signal-to-noise ratio
95 dB (1 kHz, 0 dB)
Wow and flutter
Unmeasurable
GENERAL
Power requirements
230 V AC, 50/60 Hz
Power consumption
50 W
Power consumption in standby mode
with ECO mode on: 0.3 W
with ECO mode off: 8 W
Dimensions (w/h/d)
Approx. 163 
× 230.5 × 240 mm
Mass
Approx. 3.5 kg
Supplied accessories:
FM antenna (1)
AM antenna (1)
Remote commander (1)
Batteries (2)
Specifications and external appearance are subject to change
without notice.
2
CX-LEM300
1. SERVICING NOTES
······················································· 3
2. GENERAL
·········································································· 5
3. DISASSEMBLY
3-1. Rear Cabinet ··································································· 7
3-2. CD Cabinet Section, Front Panel Section ······················· 8
3-3. CD Mechanism Deck ······················································ 8
3-4. CONTROL Board ··························································· 9
3-5. Tape Mechanism Deck ···················································· 9
3-6. Cassette Door Assy ······················································· 10
3-7. POWER Board, MAIN Board ······································ 10
3-8. Optical Pick-up (KSS-213E/C2N) ································ 11
4. MECHANICAL ADJUSTMENTS
····························· 12
5. ELECTRICAL ADJUSTMENTS
······························· 13
6. DIAGRAMS
······································································ 15
6-1. Block Diagram  – CD Section – ··································· 17
6-2. Block Diagram  – Main Section – ································ 18
6-3. Printed Wiring Board  – CD Section – ························· 19
6-4. Schematic Diagram  – CD Section – ···························· 20
6-5. Printed Wiring Boards  – Main Section – ····················· 21
6-6. Schematic Diagram  – Main Section – ························· 22
6-7. Printed Wiring Board  – Control Section – ··················· 23
6-8. Schematic Diagram  – Control Section – ······················ 24
6-9. Printed Wiring Board  – Power Section – ····················· 25
6-10. Schematic Diagram  – Power Section – ······················ 26
6-11. IC Pin Function Description ······································· 28
7. EXPLODED VIEWS
7-1. Cabinet Section ····························································· 30
7-2. Front Panel Section ······················································· 31
7-3. CD Cabinet Section ······················································ 32
7-4. KSM-213EDP ······························································· 33
8. ELECTRICAL PARTS LIST
······································· 34
TABLE OF CONTENTS
3
CX-LEM300
SECTION 1
SERVICING NOTES
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 
0
 OR DOTTED LINE WITH
MARK 
0
 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
This label is located on the exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
LASER  DIODE  AND  FOCUS  SEARCH  OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveforms is output three times.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
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.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during
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.
4
CX-LEM300
Service Position of the CD Mechanism Deck
Service Position of the Tape Cassette Mechanism Deck
Page of 40
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Here you can view online or download Sony CX-LEM300 / XR-EM300 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony CX-LEM300 / XR-EM300 Car Audio. Information contained in Sony CX-LEM300 / XR-EM300 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).