DOWNLOAD Sony CX-LMN75 / XR-MN75 Service Manual ↓ Size: 7.08 MB | Pages: 71 in PDF or view online for FREE

Model
CX-LMN75 XR-MN75
Pages
71
Size
7.08 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cx-lmn75-xr-mn75.pdf
Date

Sony CX-LMN75 / XR-MN75 Service Manual ▷ View online

CX-LMN75
AEP Model
 UK Model
E Model
Australian Model
SERVICE MANUAL
MICRO HI-FI COMPONENT SYSTEM
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
9-877-674-04
2006L16-1
© 2006.12
CX-LMN75 is the Amplifier, CD player, Tape
Deck and Tuner section in XR-MN75.
SPECIFICATIONS
Ver. 1.3  2006. 12
Model Name Using Similar Mechanism
NEW
CD
CD Mechanism Type
KSM-215CFP/C2NP
Section
Base Unit Name
BU-F4BD81B
Optical Pick-up Name
CDM69CV-F4BD81
TAPE
Model Name Using Similar Mechanism
NEW
Section
Tape Transport Mechanism Type
CMAL1Z250A
Main Unit
Amplifier section
European model:
DIN power output (rated): 60 + 60 W 
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
80 + 80 W 
(6 ohms at 1 kHz, 10% 
THD)
Music power output (reference):
140 + 140 W
(6 ohms at 1 kHz, 10% 
THD)
Other models:
The following measured at 220 – 240 V AC, 50/60 Hz
DIN power output (rated): 60 + 60 W 
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
80 + 80 W 
(6 ohms at 1 kHz, 10% 
THD)
Inputs
AUX IN (RCA pin jacks): Sensitivity 1 V, 
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones with 
an impedance of 32 ohms 
or more
SPEAKER:
accepts impedance of 
6 ohms
SUB WOOFER OUT:
voltage 1.9 V
CD player section
System
Compact disc and digital 
audio system
Laser
Semiconductor laser 
(
λ=780 nm)
Emission duration: 
continuous
Frequency response
20 Hz – 20 kHz
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
100 – 10,000 Hz, using 
Sony TYPE I cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range:
87.5 – 108.0 MHz 
(50-kHz step)
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Latin-American model: 530 – 1,710 kHz 
(with the tuning interval 
set at 10 kHz) 
531 – 1,710 kHz 
(with the tuning interval 
set at 9 kHz)
— Continued on next page —
2
CX-LMN75
European model:
531 – 1,602 kHz 
(with the tuning interval 
set at 9 kHz) 
Other models:
530 – 1,710 kHz 
(with the tuning interval 
set at 10 kHz)
531 – 1,602 kHz 
(with the tuning interval 
set at 9 kHz)
Antenna
AM loop antenna, external
antenna terminal
Intermediate frequency
450 kHz 
General
Power requirements
European model:
230 V AC, 50/60 Hz
Australian model:
230 – 240 V AC, 50/60 Hz
Other models:
120 V, 220 V or 
230 – 240 V AC, 50/60 Hz
Adjustable with voltage 
selector
Power consumption
European model:
85 W 
0.3 W (in Power Saving 
mode)
Other models:
85 W
Dimensions (w/h/d) incl. projecting parts and controls 
Amplifier/Tuner/Tape/CD section:
Approx. 190 
× 277 ×
  
361.4 mm
Mass
Amplifier/Tuner/Tape/CD section:
Approx. 6.4 kg
Design and specifications are subject to change 
without notice.
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.
3
CX-LMN75
1. SERVICING NOTES
······················································· 4
2. GENERAL
·········································································· 5
3. DISASSEMBLY
3-1. Side Panel (L)(R), Top Panel, Back Panel ···················· 8
3-2. CD Mechanism Section ················································ 8
3-3. Front Panel Section ······················································· 9
3-4. FRONT Board ······························································· 9
3-5. Cassette Deck Mechanism ·········································· 10
3-6. Cassette Panel ····························································· 10
3-7. Power Transformer ····················································· 11
3-8. MAIN Board Section ·················································· 11
3-9. CD Mechanism Deck (CDM69CV-F4BD81) ············· 12
3-10. Optical Pick-up Section ·············································· 12
3-11. Base Unit (BU-F4BD81B) ········································· 13
3-12. BD Board, Optical Pick-up (KSM-215CFP/C2NP) ··· 13
3-13. SW Board, Bracket (TOP) Assy ································· 14
3-14. CONNECTOR Board ················································· 14
3-15. Motor (Stocker) Assy (Stocker)(M761) ······················ 15
3-16. Motor (Roller) Assy (Roller)(M781) ·························· 15
3-17. Motor (Mode) Assy (Mode)(M771) ··························· 16
3-18. Rubber Roller (Slider) Assy ········································ 16
3-19. Timing Belt (Front/Rear) ············································ 17
3-20. Cam (Gear) ································································· 17
3-21. SENSOR Board ·························································· 18
4. ASSEMBLY
4-1. How to Install the Cam (EJECT LOCK) ···················· 19
4-2. How to Install the Cam (GEAR) ································· 19
4-3. How to Install the Gear (MODE C) ···························· 20
4-4. How to Install the Gear (MODE CAM) ····················· 20
4-5. How to Install the Rotary Encoder (S702),
Gear (STOCKER COMMUNICATION) ··················· 21
4-6. How to Install the Stocker Assy ·································· 21
5. TEST MODE
···································································· 22
6. MECHANICAL ADJUSTMENTS
····························· 23
7. ELECTRICAL ADJUSTMENTS
······························· 23
8. DIAGRAMS
······································································ 27
8-1. Block Diagram — BD/Changer Section — ················ 28
— MAIN Section — ··················································· 29
8-2. Printed Wiring Boards — BD Section — ··················· 30
8-3. Schematic Diagram — BD Section — ······················· 31
8-4. Printed Wiring Boards — Changer Section — ··········· 32
8-5. Schematic Diagram — Changer Section — ··············· 33
8-6. Printed Wiring Boards — FRONT Section — ··········· 34
8-7. Schematic Diagram — FRONT Section — ················ 35
8-8. Printed Wiring Boards — MAIN Section — ·············· 36
8-9. Schematic Diagram — MAIN Section 1 — ··············· 37
8-10. Schematic Diagram — MAIN Section 2 — ··············· 38
8-11. Schematic Diagram — MAIN Section 3 — ··············· 39
8-12. Schematic Diagram — MAIN Section 4 — ··············· 40
8-13. Schematic Diagram — MAIN Section 5 — ··············· 41
8-14. Schematic Diagram
— MAIN Section 6/Power Section — ······················· 42
8-15. Printed Wiring Boards — Power Section — ·············· 43
8-16. IC Pin Function Description ······································· 47
9. EXPLODED VIEWS
9-1. Panel Section ······························································ 49
9-2. Front Section ······························································· 50
9-3. Chassis Section ··························································· 51
9-4. CD Mechanism Deck Section 1
(CDM69CV-F4BD81) ················································ 52
9-5. CD Mechanism Deck Section 2
(CDM69CV-F4BD81) ················································ 53
9-6. CD Mechanism Deck Section 3
(CDM69CV-F4BD81) ················································ 54
9-7. CD Mechanism Deck Section 4
(CDM69CV-F4BD81) ················································ 55
9-8. CD Mechanism Deck Section 5
(CDM69CV-F4BD81) ················································ 56
9-9. CD Mechanism Deck Section 6
(CDM69CV-F4BD81) ················································ 57
9-10. CD Mechanism Deck Section 7
(CDM69CV-F4BD81) ················································ 58
9-11. Optical Pick-up Section ·············································· 59
10.ELECTRICAL PARTS LIST
······································· 60
TABLE OF CONTENTS
4
CX-LMN75
SECTION 1
SERVICING NOTES
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
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.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING 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
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 ˚C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 ˚C .
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
Page of 71
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  • DOWNLOAD Sony CX-LMN75 / XR-MN75 Service Manual ↓ Size: 7.08 MB | Pages: 71 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony CX-LMN75 / XR-MN75 in PDF for free, which will help you to disassemble, recover, fix and repair Sony CX-LMN75 / XR-MN75 Car Audio. Information contained in Sony CX-LMN75 / XR-MN75 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.