DOWNLOAD Sony CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 Service Manual ↓ Size: 4.56 MB | Pages: 51 in PDF or view online for FREE

Model
CX-LDB10 CX-LDB20 XR-DB10 XR-DB20
Pages
51
Size
4.56 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cx-ldb10-cx-ldb20-xr-db10-xr-db20.pdf
Date

Sony CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 Service Manual ▷ View online

SERVICE MANUAL
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
AEP Model
E Model
CX-LDB10/LDB20
Australian Model
CX-LDB10
MICRO HI-FI COMPONENT SYSTEM
9-879-549-04
2006I16-1
© 2006.09
Ver. 1.3  2006.09
SPECIFICATIONS
CX-LDB10/LDB20
Model Name Using Similar Mechanism
HCD-NE5
CD
Base Unit Name
BU-K7BD81D-G
Section
Optical Pick-up Name
KSM-213EDP/C2NP
Tape deck
Model Name Using Similar Mechanism
HCD-NE5
Section
Tape Transport Mechanism Type
CMAL5Z220A
CX-LDB10/LDB20 are the Amplifier, CD player,
Tape Deck and Tuner section in XR-DB10/DB20.
— Continued on next page —
Amplifier section
CX-LDB20
DIN power output (rated): 35 + 35 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
40 + 40 W
(6 ohms at 1 kHz, 10% 
THD)
Music power output (reference):
62 + 62 W
Inputs
AUDIO IN:
Sensitivity 700 mV, 
impedance 47 kilohms
Outputs
PHONES:
Accepts headphones with 
an impedance of 8 ohms or 
more
SPEAKER:
Accepts impedance of 6 to 
16 ohms.
CX-LDB10
DIN power output (rated): 20 + 20 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
22.5 + 22.5 W
(6 ohms at 1 kHz, 10% 
THD)
Music power output (reference):
38 + 38 W
Inputs
AUDIO IN:
Sensitivity 700 mV, 
impedance 47 kilohms
Outputs
PHONES:
Accepts headphones with 
an impedance of 8 ohms or 
more
SPEAKER:
Accepts impedance of 6 to 
16 ohms.
CD player section
Laser Diode Properties
Emission duration: 
continuous
Laser Output*: Less than 
44.6 
µW
* This  output  is  the value measurement at a distance of 
200 mm from the objective lens surface on the 
Optical Pick-up Block with 7 mm aperture)
Frequency response
20 Hz – 20 kHz
Tape deck section
Recording system
4-track 2-channel, stereo
Frequency response
50 – 13,000 Hz (
±3 dB), 
using Sony TYPE I 
cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Pan-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)
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 
Photo : CX-LDB20
2
CX-LDB10/LDB20
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged 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.
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.
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 viscou-s (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.
This appliance is 
classified as a CLASS 1 
LASER product. This 
label is located on the 
rear exterior.
General
Power requirements
European model:
AC 230 V, 50/60 Hz
Korean model:
AC 220 V, 60 Hz
Australian model:
AC 230 – 240 V, 50/60 Hz
Mexican model:
AC 120 V, 60 Hz
Argentine model:
AC 220 V, 50/60 Hz
Other models:
AC 110 – 120 V or 
220 – 240 V, 50/60 Hz
Adjustable with voltage 
selector
Power consumption
CX-LDB20:
95 W
0.3 W (in Power Saving 
Mode)
CX-LDB10:
65 W
0.3 W (in Power Saving 
Mode)
Dimensions (w/h/d) excl. speakers
Approx. 160 
× 230 × 
255 mm
Mass excl. speakers
CX-LDB20:
Approx. 4.0 kg
CX-LDB10:
Approx. 3.8 kg
Design and specifications are subject to change 
without notice.
3
CX-LDB10/LDB20
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
4
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
7
3-2.
Rear Cabinet ....................................................................
7
3-3.
Top Panel Assy, Front Panel Assy ...................................
8
3-4.
Base Unit (BU-K7BD81D-G) .........................................
8
3-5.
Mechanical Deck (CMAL5Z220A) ................................
9
3-6.
CONTROL Board ...........................................................
9
3-7.
MAIN Board, Power Transformer ................................... 10
3-8.
Lid  (Cassette) ................................................................. 10
4.
TEST MODE
............................................................... 11
5.
MECHANICAL ADJUSTMENTS
......................... 12
6.
ELECTRICAL ADJUSTMENTS
.......................... 12
7.
DIAGRAMS
................................................................. 15
7-1.
Block Diagram  — CD Section — .................................. 16
7-2.
Block Diagram  — MAIN Section — ............................. 17
7-3.
Printed Wiring Board — CD Board — .......................... 18
7-4.
Schematic Diagram — CD Board — ............................. 19
7-5.
Printed Wiring Board — MAIN Section (1/2) — .......... 20
7-6.
Printed Wiring Board — MAIN Section (2/2) — .......... 21
7-7.
Schematic Diagram — MAIN Section (1/3) — ............. 22
7-8.
Schematic Diagram — MAIN Section (2/3) — ............. 23
7-9.
Schematic Diagram — MAIN Section (3/3) — ............. 24
7-10. Printed Wiring Board — CONTROL Board (1/2) — .... 25
7-11. Printed Wiring Board — CONTROL Board (2/2) — .... 26
7-12. Schematic Diagram — CONTROL Board — ................ 27
7-13. Printed Wiring Board — POWER Board — .................. 28
7-14. Schematic Diagram — POWER Board — ..................... 29
7-15. Printed Wiring Board — AUX Section — ..................... 30
7-16. Schematic Diagram — AUX Section — ........................ 30
8.
EXPLODED VIEWS
8-1.
Overall Section ................................................................ 36
8-2.
Front Panel Section ......................................................... 37
8-3.
Chassis Section ................................................................ 38
8-4.
Top Panel Assy ................................................................ 39
9.
ELECTRICAL PARTS LIST
.................................. 40
Ver. 1.3
4
CX-LDB10/LDB20
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.
MODEL  IDENTIFICATION
– Back Panel –
Model Name
Power Voltage Indication
Mexican model
120 V AC, 60 Hz
AEP, Russian models
230 V AC, 50/60 Hz
Korean model
220 V AC, 50/60 Hz
Australian model
230 – 240 V AC, 50/60 Hz
Other models
110 – 120 V or
(E51, Singapore, Malaysia,
220 – 240 V AC, 50/60Hz
Taiwan and Argentine models)
Power voltage 
indication 
Ver.1.1
Page of 51
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Sony CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 Service Manual ▷ Download

  • DOWNLOAD Sony CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 Service Manual ↓ Size: 4.56 MB | Pages: 51 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 in PDF for free, which will help you to disassemble, recover, fix and repair Sony CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 Audio. Information contained in Sony CX-LDB10 / CX-LDB20 / XR-DB10 / XR-DB20 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.