DOWNLOAD Sony CX-LEM550 / XR-EM550 Service Manual ↓ Size: 3.24 MB | Pages: 48 in PDF or view online for FREE

Model
CX-LEM550 XR-EM550
Pages
48
Size
3.24 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cx-lem550-xr-em550.pdf
Date

Sony CX-LEM550 / XR-EM550 Service Manual ▷ View online

3
CX-LEM550
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
4
2.
GENERAL
...................................................................
6
3.
DISASSEMBLY
3-1.
Rear Cabinet ....................................................................
8
3-2.
Top Panel Assy ................................................................
9
3-3.
Front Panel Assy ..............................................................
9
3-4.
Base Unit (BU-K7BD81B) ............................................. 10
3-5.
Tape Cassette Mechanism Deck ...................................... 10
3-6.
MAIN Board .................................................................... 11
3-7.
AMP Board ...................................................................... 11
4.
TEST MODE
............................................................... 12
5.
MECHANICAL ADJUSTMENTS
......................... 13
6.
ELECTRICAL ADJUSTMENTS
Deck Section .................................................................... 13
CD Section ...................................................................... 14
7.
DIAGRAMS
7-1.
Block Diagram  – CD Servo Section – ............................ 16
– MAIN Section – ........................................................... 17
7-2.
Printed Wiring Board  – CD Board – .............................. 18
7-3.
Schematic Diagram  – CD Board – ................................. 19
7-4.
Printed Wiring Board  – MAIN Board – ......................... 20
7-5.
Schematic Diagram  – MAIN Board – ............................ 21
7-6.
Printed Wiring Board  – AMP Section – ......................... 22
7-7.
Schematic Diagram  – AMP Section – ............................ 23
7-8.
Printed Wiring Board – CONTROL Board – .................. 24
7-9.
Schematic Diagram  – CONTROL Board – .................... 25
7-10. Printed Wiring Board – POWER Board – ....................... 26
7-11. Schematic Diagram – POWER Board – .......................... 27
8.
EXPLODED VIEWS
8-1.
Overall Section ................................................................ 34
8-2.
Front Panel Assy-1 .......................................................... 35
8-3.
Front Panel Assy-2 .......................................................... 36
8-4.
Top Panel Assy ................................................................ 37
9.
ELECTRICAL PARTS LIST
.................................. 38
4
CX-LEM550
SECTION 1
SERVICING NOTES
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
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.
MODEL  IDENTIFICATION
– Back Panel –
Model Name
Power Voltage Indication
AEP and UK models
230 V AC, 50/60 Hz  67W
Korean model
220 V AC, 50/60 Hz  67W
Other models (Singapore,
110 – 120 V or
Chilean and peruvian models)
220 – 240 V AC, 50/60Hz  67W
SERVICE  POSITION  OF  THE  CD  MECHANISM DECK
CD board
CD Mechanism Deck
Power Voltage Indication
5
CX-LEM550
SERVICE  POSITION  OF  THE  TAPE  CASSETTE  MECHANISM  DECK
SERVICE  POSITION  OF  THE  AMP  BOARD
Tape Cassette Mechanism Deck
(CMAL1Z240A)
AMP board
6
CX-LEM550
SECTION 2
GENERAL
This section is extracted
from instruction manual.
Main unit
ALBUM +/–  qg (10, 11, 16)
BASS/TREBLE 5 (18)
Cassette compartment qa
CD SYNCHRO qd (16)
DIRECTION  8 (15, 16, 17)
DISPLAY w; (14, 21)
Display window 2
i-Bass 6 (18)
OPEN (CD open/close) 4 (10)
PHONES jack qf
PLAY MODE 8 (9, 11, 16)
Remote sensor 3
TUNER/BAND qj (12, 13)
TUNING +/– qh (12, 13, 18)
TUNING MODE 8 (12, 13)
VOLUME 9 (19, 23, 25)
?/1 (power) 1 (7, 19, 20, 25)
.m/M>  (skip back/
skip forward, rewind/fast 
forward) qh (10, 11, 15)
x (stop) 7 (10, 16, 17, 25)
z REC PAUSE/START qs (16, 
17)
CD/NX (play/pause) qk (10, 
11, 23)
TAPE/nN  (play) ql (15, 16, 
17, 20)
Z PUSH (tape open/close) q; 
(15)
List of button locations and reference pages
How to use this page
Use this page to find the location of buttons and other 
parts of the system that are mentioned in the text.
Illustration number
r
DISPLAY
 wa (14, 21)
R
R
Name of button/part
Reference page
ALPHABETICAL ORDER
A – O
P – Z
BUTTON DESCRIPTIONS
1
2
3 4
5
6
7
8
9
qa
0
qs
qd
qf
qg
qh
qj
qk
w;
ql
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Sony CX-LEM550 / XR-EM550 Service Manual ▷ Download

  • DOWNLOAD Sony CX-LEM550 / XR-EM550 Service Manual ↓ Size: 3.24 MB | Pages: 48 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony CX-LEM550 / XR-EM550 in PDF for free, which will help you to disassemble, recover, fix and repair Sony CX-LEM550 / XR-EM550 Car Audio. Information contained in Sony CX-LEM550 / XR-EM550 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.